Garmin 182, 182C, 232 GPS Receiver User Manual

GPSMAP 182/182C/232
chartplotting receivers
owner’s
manual
and
reference
guide
(GPSMAP 232 and 182C shown)
Introduction
© 2004 Garmin Ltd. or its subsidiaries
Foreword
Garmin International, Inc., 1200 East 151st Street, Olathe, KS 66062, U.S.A.
Tel. 913/397.8200 or 800/800.1020
Fax 913/397.8282
Garmin (Europe) Ltd., Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey SO51 9DL, U.K.
Tel. 44/0870.8501241
Fax 44/0870.8501251
Garmin Corporation, No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan
Tel. 886/2.2642.9199
Fax 886/2.2642.9099

All rights reserved. Except as expressly provided herein, no part of this manual may be reproduced,
copied, transmitted, disseminated, downloaded or stored in any storage medium, for any purpose
without prior written consent of Garmin. Garmin hereby grants permission to download a single copy
of this manual onto a hard drive or other electronic storage medium to be viewed for personal use,
provided that such electronic or printed copy of this manual or revision must contain the complete text
of this copyright notice and provided further that any unauthorized commercial distribution of this
manual is strictly prohibited.
Garmin®, Autolocate®, GPSMAP®, TracBack®, DCG®,
See-Thru®, MapSource®, and BlueChart® are registered
trademarks of Garmin Ltd. or its subsidiaries and may not
be used without the express permission of Garmin.
Information in this manual is subject to change without notice. Garmin reserves the right to change
or improve its products and to make changes in the content without obligation to notify any person
or organization of such changes. Visit the Garmin web site (www.Garmin.com) for current updates and
supplemental information concerning the use and operation of this and other Garmin products.
November 2004
Part Number 190-00215-10 Rev. B
Printed in Taiwan
i
Preface
Introduction
Preface/Registration/
Software License Agreement
Product Support Product Registration
Help us better support you by completing our
on-line registration today!
Have the serial number of your GPSMAP
182/182C/232 handy and connect to our web site
(www.Garmin.com). Look for the Product Registration
link on the Home page. Also, be sure to record your
serial number in the area provided on page iv of this
manual.
NOTE: If you have previously registered a Garmin
product purchase, we invite you to re-register using
our NEW on-line system. Many services provided by
our new product registration system are now being
automated and re-registering your purchase ensures
you the best possible support from Garmin.
ii
Congratulations on choosing one of the most advanced marine navigation systems available! The Garmin
GPSMAP 182/182C/232 models utilize the proven performance of Garmin GPS and full featured mapping to
create unsurpassed marine navigation chartplotters.
This manual covers instructions for the GPSMAP 182, GPSMAP 182C (color), and GPSMAP 232. Unit
operation and specifications will be the same on all three models unless otherwise specified. For GSD 20
sonar related operations, refer to “GSD 20 Sounder Module with Garmin Chartplotters” (190-00241-03). To
get the most out of your new navigation system, take the time to go through this owner’s manual and learn the
operating procedures for your unit. This manual is broken down into two parts for your convenience.
Part One introduces you to the GPSMAP 182/182C/232 and provides a Getting Started tour so that you
may become more familiar with the unit. This section will provide you with a basic working knowledge necessary to use the unit to its fullest potential.
Part Two is divided into sections that provide detailed references to the advanced features and operations of the GPSMAP 182/182C/232. This allows you to concentrate on a specific topic quickly and look up
detailed information about the GPSMAP 182/182C/232.
Software License Agreement
BY USING THE GPSMAP 182/182C/232, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT. PLEASE READ THIS AGREEMENT
CAREFULLY.
Garmin grants you a limited license to use the software embedded in this device (the “Software”) in binary
executable form in the normal operation of the product. Title, ownership rights and intellectual property
rights in and to the Software remain in Garmin.
You acknowledge that the Software is the property of Garmin and is protected under the United States of
America copyright laws and international copyright treaties. You further acknowledge that the structure, organization and code of the Software are valuable trade secrets of Garmin and that the Software in source code
form remains a valuable trade secret of Garmin. You agree not to decompile, disassemble, modify, reverse
assemble, reverse engineer or reduce to human readable form the Software or any part thereof or create any
derivative works based on the Software. You agree not to export or re-export the Software to any country in
violation of the export control laws of the United States of America.
The GPS system is operated by the United States government, which is solely responsible for its accuracy
and maintenance. The system is subject to changes which could affect the accuracy and performance of all GPS
equipment. Although the Garmin GPSMAP 182/182C/232 is a precision electronic NAVigation AID (NAVAID),
any NAVAID can be misused or misinterpreted and, therefore, become unsafe.
The electronic chart is an aid to navigation and is designed to facilitate the use of authorized government
charts, not replace them. Only official government charts and notices to mariners contain all information needed
for safe navigation – and, as always, the user is responsible for their prudent use.
Use the GPSMAP 182/182C/232 at your own risk. To reduce the risk of unsafe operation, carefully review
and understand all aspects of this Owner’s Manual—and thoroughly practice operation using the simulator
mode prior to actual use. When in actual use, carefully compare indications from the GPSMAP 182/182C/232 to
all available navigation sources, including the information from other NAVAIDs, visual sightings, charts, etc. For
safety, always resolve any discrepancies before continuing navigation.
FCC Compliance
The GPSMAP 182/182C/232 complies with Part 15 of the FCC interference limits for Class B digital devices
FOR HOME OR OFFICE USE. These limits are designed to provide reasonable protection against harmful
interference in a residential installation, and are more stringent than “outdoor” requirements. Operation of this
device is subject to the following conditions: (1) This device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause undesired operation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the
receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an
outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced
radio/TV technician for help.
The GPSMAP 182/182C/232 does not contain any user-serviceable parts. Repairs should only be made by
an authorized Garmin service center. Unauthorized repairs or modifications could result in permanent damage
to the equipment, and void your warranty and your authority to operate this device under Part 15 regulations.
Introduction

Warnings and
Precautions
MAP DATA INFORMATION: One of the goals of
Garmin is to provide customers with the most complete and
accurate cartography that is available to us at a reasonable
cost. We use a combination of governmental and private
data sources, which we identify (as required) in product literature and copyright messages displayed to the consumer.
Virtually all data sources contain inaccurate or incomplete
data to some degree. This is particularly true outside the
United States, where complete and accurate digital data is
either not available or prohibitively expensive.
CAUTION: IT IS THE USER’S RESPONSIBILITY TO
USE THIS PRODUCT PRUDENTLY. THIS PRODUCT IS
INTENDED TO BE USED ONLY AS A NAVIGATIONAL
AID AND MUST NOT BE USED FOR ANY PURPOSE
REQUIRING PRECISE MEASUREMENT OF DIRECTION, DISTANCE, LOCATION, OR TOPOGRAPHY.
WARNING: This product, its packaging, and its components contain chemicals known to the State of California
to cause cancer, birth defects, or reproductive harm. This
Notice is being provided in accordance with California’s
Proposition 65. If you have any questions or would like
additional information, please refer to our web site at
http://www.Garmin.com/prop65.
iii
Introduction
Warranty and
Serial Number
Serial Number
Use this area to record the serial number (8-digit number
located on the back of the unit) in case it is lost, stolen, or
needs service. Be sure to keep your original sales receipt in a
safe place or attach a photocopy inside the manual.
Serial Number:
*
*

The Garmin GPSMAP 182/182C/232 has no user-serviceable parts. Should you ever encounter a problem with your
unit, please take it to an authorized Garmin dealer for
repairs.
The GPSMAP 182/182C/232 is fastened shut with screws.
Any attempt to open the case to change or modify the unit
in any way will void your warranty and may result in
permanent damage to the equipment.
iv
LIMITED WARRANTY
This Garmin product is warranted to be free from defects in materials or workmanship for one year from
the date of purchase. Within this period, Garmin will at its sole option, repair or replace any components
that fail in normal use. Such repairs or replacement will be made at no charge to the customer for parts or
labor, provided that the customer shall be responsible for any transportation cost. This warranty does not
cover failures due to abuse, misuse, accident or unauthorized alteration or repairs.
THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL
OTHER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY, INCLUDING ANY LIABILITY ARISING
UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, WHICH MAY VARY
FROM STATE TO STATE.
IN NO EVENT SHALL Garmin BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE, OR INABILITY TO USE THIS
PRODUCT OR FROM DEFECTS IN THE PRODUCT. Some states do not allow the exclusion of incidental
or consequential damages, so the above limitations may not apply to you.
Garmin retains the exclusive right to repair or replace the unit or software or offer a full refund of the
purchase price at its sole discretion. SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY
FOR ANY BREACH OF WARRANTY.
To obtain warranty service, contact your local Garmin authorized dealer. Or call Garmin Product Support at one of the numbers shown below, for shipping instructions and an RMA tracking number. The unit
should be securely packed with the tracking number clearly written on the outside of the package. The unit
should then be sent, freight charges prepaid, to any Garmin warranty service station. A copy of the original
sales receipt is required as the proof of purchase for warranty repairs.
Products sold through online auctions are not eligible for rebates or other special offers from Garmin.
Online auction confirmations are not accepted for warranty verification. To obtain warranty service, an
original or copy of the sales receipt from the original retailer is required. Garmin will not replace missing
components from any package purchased through an online auction.
Garmin International, Inc.
1200 East 151st Street
Olathe, Kansas 66062, U.S.A.
Phone: 913/397.8200
USA Only: 800/800.1020
FAX:
913/397.0836
Garmin (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate
Romsey, SO51 9DL, U.K.
Phone: 44/0870.8501241
FAX:
44/0870.8501251
Designed for detailed electronic charting capability, the Garmin GPSMAP 182/182C/232 is a powerful navigation device that can give you the information you need:
Precision Performance
• 16-color TFT display with backlighting (GPSMAP 182C only)
• High-contrast, ten-level gray, LCD screen with backing (GPSMAP 182/232 only)
• 12-channel parallel receiver tracks and uses up to 12 satellites for fast, accurate positioning
• WAAS Capable — receive signals from the additional set of WAAS (Wide Area Augmentation
System) satellites to give you better accuracy.
• Differential-Ready — just add an optional Garmin beacon receiver for better than 5-meter
accuracy
• Fully gasketed, high-impact plastic alloy case, waterproof to IEC 529-IPX-7
Advanced Navigating and Plotting
• 3000 alphanumeric waypoints with selectable icons and comments
• Built-in Worldwide basemap to 20 miles includes detailed ocean, river and lake coastlines,
cities, interstates, US state highways and local thoroughfares
• 50 reversible routes with up to 50 (254 GPSMAP 182C) waypoints each
• Uploadable maps using Garmin’s MapSource PC products and BlueChart Data Cards
• Coordinates: Lat/Lon, UTM/UPS, Loran TD, plus 16 grids, including Maidenhead
• TracBack route feature which allows you to quickly retrace your track log to a starting position
• Built-in simulator mode
• Built-in tide information from over 3,000 tide stations around the USA coastline, Alaska,
Hawaii, western Canada, and several Caribbean Islands
Introduction
Capabilities
Superior Fishfinding Ability (when combined with the GSD 20 Sounder Module)
• Whiteline feature provides a clear image
of bottom hardness and structure.
• See-Thru technology which helps separate fish returns from thermoclines and
structure.
• Depth Control Gain (DCG) feature
automatically adjusts fishfinder sensitivity
according to depth
• Four Zoom levels with a moving view
window, plus bottom lock.
• Underwater waypoint marking
• Map/Sonar split screen combines
navigation and fishfinding ability.
• Fish and Depth alarms.
v
Introduction
Packing List
Before installing and getting started with your unit, please check to see that your package includes
the following items. If any parts are missing, please contact your Garmin dealer immediately.
Standard Package:
• GPSMAP 182/182C/232 Unit
• GA 29 Remote Antenna and 30’ cable*
• Internal Antenna, Bail Mount**
• Ferrite Bead Filter Clamp (GPSMAP 182C Only)
• Gimbal Mount and Knobs
• Power/Data Cable
• Owner’s Manual
• Quick Reference Card
• Protective Cover
* Not included with part numbers 010-00238-01 or 010-00259-01 with internal bail mount antenna.
** Not included with part numbers 010-00238-00 or 010-00259-00 with remote antenna.
vi
Optional Accessories:
• US A/C PC Adapter
• EURO A/C PC Adapter
• UK A/C PC Adapter
• Cigarette Lighter Adapter
• BlueChart Marine Data Cards, MapSource CDs, USB Data Card Programmer, and Data Cards
• GSD 20 Remote Sounder Module
• GBR 21 Beacon Receiver for differential corrections
• 2nd Mounting Station
• Marine Swivel Mount, 1” RAM® Mount (GPSMAP 182/182C Only)
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . i-viii
Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Preface/Registration/Software License . . . . . . . .ii
Warnings and Precautions . . . . . . . . . . . . . . . . iii
FCC Compliance. . . . . . . . . . . . . . . . . . . . . . . iii
Warranty and Serial Number. . . . . . . . . . . . . . iv
Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Packing List. . . . . . . . . . . . . . . . . . . . . . . . . . . vi
“How To” Index. . . . . . . . . . . . . . . . . . . . . . . viii
Section One: Getting Started . . . . . . . . . . . . . 1-17
Keypad Usage, Selecting Options, Entering
Data, Initializing the Receiver, Power
On/Off, Backlighting, Simulator, Description
of Main Pages, Simulated Tour
Section Two: Reference . . . . . . . . . . . . . . . . 18-67
Map Page and Options . . . . . . . . . . . . . . . . . .18
Map Page Configuration . . . . . . . . . . . . . .24
Compass Page and Options . . . . . . . . . . . . . . .27
Numbers Page . . . . . . . . . . . . . . . . . . . . . . . . .28
Highway Page and Options . . . . . . . . . . . . . . .28
Waypoints . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Creating. . . . . . . . . . . . . . . . . . . . . . . . . . .30
Reviewing and Editing. . . . . . . . . . . . . . . .32
Proximity. . . . . . . . . . . . . . . . . . . . . . . . . .35
Going to a Destination. . . . . . . . . . . . . . . . . . .37
TracBack . . . . . . . . . . . . . . . . . . . . . . . . . .38
MOB . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Creating. . . . . . . . . . . . . . . . . . . . . . . . . . .41
Route List Page . . . . . . . . . . . . . . . . . . . . .43
Reviewing and Editing. . . . . . . . . . . . . . . .44
Active Route Page . . . . . . . . . . . . . . . . . . . . . .48
Find Feature . . . . . . . . . . . . . . . . . . . . . . . . . .49
Main Menu Page . . . . . . . . . . . . . . . . . . . . . . .51
GPS Tab. . . . . . . . . . . . . . . . . . . . . . . . . . .52
Tide Tab . . . . . . . . . . . . . . . . . . . . . . . . . .56
Trip Tab . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Celestial Tab . . . . . . . . . . . . . . . . . . . . . . .58
Track Tab. . . . . . . . . . . . . . . . . . . . . . . . . .59
Time Tab . . . . . . . . . . . . . . . . . . . . . . . . . .61
Pages Tab. . . . . . . . . . . . . . . . . . . . . . . . . .61
System Tab . . . . . . . . . . . . . . . . . . . . . . . .62
Units Tab. . . . . . . . . . . . . . . . . . . . . . . . . .63
Communication Tab . . . . . . . . . . . . . . . . .64
Alarm Tab . . . . . . . . . . . . . . . . . . . . . . . . .67
Appendix A: Loran TD . . . . . . . . . . . . . . . . . . . . .68
Appendix B: DSC. . . . . . . . . . . . . . . . . . . . . . . . .70
Appendix C: Time Offsets . . . . . . . . . . . . . . . . . .76
Appendix D: Messages . . . . . . . . . . . . . . . . . . . .77
Appendix E: Map Datums . . . . . . . . . . . . . . . . . .79
Appendix F: Navigation Terms . . . . . . . . . . . . . .81
Appendix G: Specifications. . . . . . . . . . . . . . . . .83
Appendix H: Installation. . . . . . . . . . . . . . . . . . .84
Appendix I: Index . . . . . . . . . . . . . . . . . . . . . . . .90
Introduction
Table of Contents
vii
Introduction
“How To” Index

The list to the right is provided to help you quickly find
some of the more important procedures you will use on your
new GPSMAP 182/182C/232.
viii
TO DO THIS:
SEE PAGE(S):
Turn the unit on or off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4, 6, 17
Initialize the GPS receiver (first time use) . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Adjust screen backlighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7
Enter data and select options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Learn how to operate the unit’s function keys . . . . . . . . . . . . . . . . . . . . . . . . . 1
Mark your present location as a waypoint . . . . . . . . . . . . . . . . . . . . . . . 10, 30
Go to a destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14, 37-38
Create and use a route . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41-47
Learn about the Map page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9, 18-19
Pan using the map arrow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9, 19-20
Zoom in or out on the Map page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9, 20
Reconfigure the Map page display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-26
Access the Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16, 51
Change units of measure (statute, nautical, metric) . . . . . . . . . . . . . . . . .63-64
Change the displayed time (zone) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Setup Loran TD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68-69
View tide information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56-57
View celestial information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Set Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Use the Find function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
View a unit message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
ZOOM IN Key
The ZOOM IN/IN key adjusts the map scale to display a smaller area with more detail. (Zooms in)
Getting Started
ZOOM OUT Key
The ZOOM OUT/OUT key adjusts the map scale to display a larger area with less detail. (Zooms out)
Keypad Usage
NAV Key
The NAV key displays the Go To and Follow navigation menu.
ZOOM
IN
ZOOM
OUT
QUIT Key
The QUIT key returns the display to the previous page and, when entering data, it restores the previous value
(cancels data entry).
NAV
PAGE
MENU Key
The MENU key displays a menu of available options for the current page. Press twice to display the Main Menu.
QUIT
MENU
PAGE Key
The PAGE key selects the main pages in sequence and returns display from a submenu page.
ARROW KEYPAD
The ARROW KEYPAD is used to select (Highlight) menu options and enter data. It also controls cursor movement
on the Map Page.
FIND Key
The FIND key actives the find function to search for nearby items and user waypoints.
Arrow Keypad
ENTER/MARK Key
The ENTER/MARK key selects a highlighted menu option. When entering data, it allows you to initiate entry, and
then to accept the selected value(s). It also marks the current location as a waypoint when pressed and held for
more than one second.
POWER/ BACKLIGHT Key
The POWER/ BACKLIGHT key turns on/off the unit and display illumination. Also controls Contrast on
monochrome untis.
MOB Key
The MOB (Man OverBoard) key actives the Man OverBoard navigation feature when pressed.
FIND
Power Key
ENTER
MARK
MOB
Always press and release a key to perform its primary
function. Pressing and holding the ENTER/MARK will
activate the secondary function.
1
Getting Started
Selecting Options
How To Select Options and Enter Data
Before moving ahead into the features of the GPSMAP 182/182C/232, you will need to learn basic
operations. You can select and activate options and enter data to customize the GPSMAP 182/182C/
232 to fit your requirements. You can use the ENTER/MARK key and ARROW KEYPAD to select
options, enter names and numbers in data fields, and activate your selections.
To select and activate an optional feature:
1. With any page displayed, press the MENU key to pop-up the options menu. The options menu will
display a list of optional features which are specific for that particular page. To select any feature on
the list of options requires movement of the cursor, which is identified as highlighting, selecting or
choosing an item in a list or a field (box) on a page.
Options Menu with
highlighted option.
Use the ARROW
KEYPAD to highlight
the next option. Press
ENTER/MARK to
activate.
2. Use the ARROW KEYPAD to move the cursor (highlight) up and down a list or up, down, and
sideways on menus.
3. Once you have moved to the selection desired, press the ENTER/MARK key to either activate the
feature or the MENU key to pop-up a sub-menu or list of yet more feature options. Just repeat this
process to select an option from the list or press the QUIT key to return to the previous setting.
The QUIT key will move backwards through these steps or when pressed, back to the main page
you started on.
To select and activate a function button:
1. When moving about a page with function buttons, like the ‘New Map Waypoint’ page, you will
observe functions such as ‘Show Map’, ‘Delete’, and ’OK’. To activate the function, highlight the
desired button and press the ENTER/MARK key.
2
Pop-up list of options for a highlighted
field.
Naming a waypoint or placing any sort of data that has not been predefined requires the use of
both the ARROW KEYPAD and the ENTER/MARK key.
To enter a name or number in a data field:
Getting Started
Entering Data
1. Once you have accessed a page with programmable data fields (i.e. ‘ Waypoint Edit’) you can use
the ARROW KEYPAD to move the cursor (Highlight) to fields on the page. Use the UP/DOWN
arrows to move up or down and the LEFT/RIGHT arrows to move sideways.
2. Pressing the ENTER/MARK key with the field highlighted begins the process for entering data in
the form of alphanumeric characters.
3. Use the ARROW KEYPAD UP/DOWN arrows to cycle through numbers 0 to 9, plus/minus symbols,
blank space, and the alphabet. Pressing and releasing the keypad moves you character by character
through the list. Pressing and holding the keypad moves you rapidly through the list.
4. Use the ARROW KEYPAD LEFT/RIGHT arrows to move to the next character on the line or
backwards to edit characters. If there are more than two lines of data, keep pressing to the RIGHT
to drop down to the next line.
5. When data entry is completed press ENTER/MARK to accept data, then move to the next
programmable field. Not all data fields are programmable, like the date and time. When moving
about a page with these type of fields, the cursor will skip over them.
Every field and button on this page
can be programmed or activated.
Pressing LEFT or RIGHT
on the ARROW KEYPAD
moves the cursor along the
line or to the next line.
Data Entry Field
• The waypoint can be renamed.
• A depth can be entered.
• A waypoint symbol can be selected
from a list of symbols.
• A comment can be added.
• The coordinates can be changed.
Pressing UP or DOWN
on the ARROW KEYPAD
changes numbers and letters.
Non-programable
data fields
• Option buttons can be activated.
3
Getting Started
Initializing the Receiver
The GPSMAP 182/182C/232’s advanced keypad system is designed to allow for fast, convenient
selection of navigation options and data entry. The Getting Started Tour will introduce you to the
keypad and provide a ‘hands-on’ lesson in using the GPSMAP 182/182C/232. We strongly encourage
you to take the Getting Started tour before using your unit for actual navigation.
The GPSMAP 182/182C/232 Quick Reference Guide contains helpful tips on using the unit and
performing various navigation tasks. It’s a good idea to keep the Quick Reference Guide nearby whenever you’re operating your new GPSMAP 182/182C/232.
Initializing the Receiver
The first time you power up your new GPSMAP 182/182C/232, the receiver must be given an
opportunity to collect satellite data and establish its present position. To ensure proper initialization,
the GPSMAP 182/182C/232 is shipped from the factory in AutoLocate mode, which will allow the
receiver to “find itself” anywhere in the world. To speed up the initialization process, we recommend
using the graphic initialization process described on the next page, which will usually provide a position fix within a few minutes.
Before you initialize, make sure the GPSMAP 182/182C/232 unit and antenna have been correctly
installed on your vessel according to the instructions in Appendix H. The antenna needs to be in a
location with a clear and unobstructed view of the sky to receive satellite signals.
GPSMAP 182/
182C/232 Warning
Screen (232 shown)
To turn the GPSMAP 182/182C/232 on:
1. Press and hold the POWER key until the power tone sounds and the display comes on, then
release the POWER key.
A warning page will appear, asking you to read and acknowledge important information regarding
the proper use of the unit.
To acknowledge the warning:
4
1. After reading the warning, press the ENTER/MARK key if you agree.
To graphically initialize the GPSMAP 182/182C/232:
1. Press the MENU key twice for the Main Menu. Press Up or Down on the ARROW KEYPAD until
the ‘GPS’ tab is highlighted, then press the MENU key once.
Getting Started
Initializing the Receiver
2. Using the ARROW KEYPAD, highlight ‘Initialize Position’ and press ENTER/MARK to initialize
the receiver from the map. The Initialize Position Page will appear, prompting you to select your
approximate location with the map cursor.
3. Use the ARROW KEYPAD to move the map cursor and point to your approximate location within
200 miles. If you have difficulty identifying your position, press and release the IN key to see the
next lower map scale.
4. Once you have determined your approximate location on the map, press the ENTER/MARK key.

Point to your approximate location and press
ENTER/MARK.
This does not “calibrate” the unit in any way, but rather helps to speed up the initial
satellite acquisition. If the unit displays “Ready (2D) or (3D )” during this process, it is
not necessary to initialize the unit.
The GPSMAP 182/182C/232 will now begin searching for the appropriate satellites for your region
and should acquire a fix within a few minutes. When viewing the ‘GPS’ tab on the Main Menu, a signal
strength bar for each satellite in view will appear on the bottom of the page, with the appropriate satellite number under each bar. The progress of satellite acquisition is shown in three stages:
• No signal strength bars— the receiver is looking for the satellites indicated.
• Hollow signal strength bars— the receiver has found the indicated satellite(s) and is collecting data.
• Solid signal strength bars— the receiver has collected the necessary data and the satellite(s) are
ready for use.
A satellite’s strength bars
will turn black when it’s
ready for use.
Once the receiver has collected information from at least three satellites, the top of the screen will
display either “Ready (2D or 3D)”, and the GPSMAP 182/182C/232 is ready for use.
5
Getting Started
Power On/Screen Backlighting
A full-screen GPS Information
pop-up page is displayed after
you press the ENTER key
to acknowledge the Warning
Page. The pop-up page will go
away after the unit gets a position fix or you press either
ENTER or QUIT. The page
can be disabled and enabled on
the Pages Tab (see page 61).
GPSMAP 182/182C/232 Getting Started Tour
The Garmin GPSMAP 182/182C/232 is a powerful electronic navigation system that provides
detailed map coverage and convenient control of many advanced features right from the screen display.
This tour is designed to take you through the basic pages and functions of the system using the simulator mode. Once you’re familiar with the main pages and functions of the unit, refer to the reference section for instructions on performing specific tasks and functions. For GSD 20 sonar related operations,
refer to “GSD 20 Sounder Module with Garmin Chartplotters” (190-00241-03).
The Getting Started Tour assumes that the receiver has been properly installed and initialized, and
you have not changed any of the default unit settings. If you have changed any settings (position formats, units of measure, etc.), the descriptions and pictures in the tour may not match your configuration.
To turn the GPSMAP 182/182C/232 on:
1. Press and hold the POWER key until the power tone sounds, then release the POWER key. The
Warning Page will appear while the unit conducts a self-test.
2. Once the self-test is complete, press the ENTER/MARK key, if you agree, to acknowledge the
warning.
The GPS Information Page will appear as the receiver begins acquiring satellites. From this or any
other page, you may also adjust the screen backlighting.
The GPSMAP 182/182C/232’s adjustable screen backlighting is controlled with the POWER key,
and may be adjusted at any time from any page. The backlight can cycle through minimum, userdefined, and maximum backlight levels by repeatedly pressing the POWER key.
To adjust the backlighting:
6
Press UP or DOWN on the
ARROW KEYPAD to move
the backlighting slider up for
brighter or down for dimmer
backlighting. (182C shown)
1. Press POWER and the Light window will appear.
2. Press POWER again and the user-defined level of backlighting will activate. You may adjust this
level by pressing UP or DOWN on the ARROW KEYPAD. If you press POWER one more time, the
backlighting will be at the maximum setting.
3. Press ENTER/MARK or QUIT when done.
The backlight will now cycle through minimum, the user-defined, and maximum backlight levels
by repeatedly pressing the POWER key. You may also adjust the screen contrast (GPSMAP 182/232
monochrome only).
To adjust the screen contrast:
Getting Started
Backlighting/
Simulator Mode
1. Press POWER and the Light and Contrast window will appear.
2. To decrease or increase the screen contrast, press left or right on the ARROW KEYPAD.
3. Press the ENTER/MARK key to finish.
Each page of the GPSMAP 182/182C/232’s system also features an options page, which gives you
access to other functions and features that relate to the specific page you are viewing. To get a feel for
how the options pages work, let’s put the GPSMAP 182/182C/232 into simulator mode.
To place the GPSMAP 182/182C/232 in simulator mode:
1. Press the MENU key twice for the Main Menu. Press Up or Down on the ARROW KEYPAD until
the ‘GPS’ tab is highlighted, then press the MENU key once.
To adjust the screen contrast, press LEFT
or RIGHT on the ARROW KEYPAD to
move the contrast slider. (non-color units)
2. Use the UP or DOWN arrow of the ARROW KEYPAD to highlight the ‘Start Simulator’ option and
press ENTER/MARK. Choose ‘No’ to the retail demonstration and press the ENTER/MARK key.
3. Press the ENTER/MARK key to confirm the ‘Running Simulator’ message that appears at the
bottom of the display. ‘Simulating’ will appear at the top of the Main pages.
While in Simulator mode, a ‘Running Simulator’ message will appear after 2 minutes of inactivity. Now
you’re ready to continue the rest of the simulated tour. Keep in mind that the GPSMAP 182/182C/232
does not track satellites in simulator mode, and this mode should never be used for actual navigation.
All the waypoint and route planning done in simulator mode will still be retained in memory for future
use.
A “Running Simulator” message
will appear after 2 minutes.
7
Getting Started
Map Page
The Map Page is one of six main pages used in the GPSMAP 182/182C/232’s system. The six main
pages are the Map Page, Sonar Page (If equipped with GSD 20), Compass Page, Numbers Page, Highway
Page, and Active Route Page. All five pages are linked together in a simple chain, which allows you to
scroll through the pages in either direction using the PAGE and QUIT keys.
Map Page
Sonar Page
PAGE
Compass Page
Numbers Page
Highway Page
QUIT
Active Route Page
The GPSMAP 182/182C/232’s Map Page combines digital chartplotting with a user-selectable
display of navigation data and a built-in worldwide database. It will also be the page you use most to
create and edit waypoints and routes. Before we take off on our practice route, let’s take a brief look at its
various features and displays.
The map display shows your “boat” as a triangle marker on an electronically generated chart.
Geographic names, roads, markers and buoys that are provided by the optional BlueChart or MapSource
data are also shown. It also displays your track, routes and nearby waypoints. An on-screen cursor
lets you pan to other map areas, determine the range and bearing to a position, and perform various
waypoint and route functions.
The data window, located at the top of the page, provides a user-selectable display of various navigation data, including speed over ground, distance to the next navigation point, compass ribbon and
current position coordinates. The current map scale setting is located at the bottom right of the page.
8
Using the Map Cursor
Working from the Map Page is a simple process that centers around the use of the cursor.
Controlled by the ARROW KEYPAD, the cursor is an important tool that can be used to pan to
other map locations, mark and edit waypoints and routes, and review position data of on-screen map
items and waypoints.
Getting Started
Map Cursor
To get a feel for using the Map Page and using the cursor, try the following exercise:
1. Use the IN/OUT keys to set the map scale to the 50 nm setting. Your boat should be near the center
of the map, at the receiver’s last known position. (If your boat isn’t where it should be, make sure
that you have initialized the receiver and acquired a position as described on pages 1-2.)
Current position
2. Use the ARROW KEYPAD to move the cursor. Notice how another data field appears, showing
the bearing and distance from your boat to the cursor, along with the latitude/longitude of the
cursor.
3. Press the QUIT key to remove the cursor and re-center your boat on the map display.
As you become more familiar with the cursor, you’ll see that the map display actively scrolls or
‘pans’, letting you explore areas around the world and create waypoints and routes. Wherever you
move the cursor, you’ll always be just one QUIT keystroke away from returning the map to your
present position.
Now that you’ve seen how the Map Page can be used to monitor your present location, let’s take a
minute to learn how to mark and store your present position as a waypoint. (Since you’re in simulator
mode, the present position displayed will be the last position calculated by the receiver, which should
be the spot where you’ve initialized the unit.) This will also give you an opportunity to see how the
GPSMAP 182/182C/232’s keypad and ENTER/MARK key are used for data entry and changing the
waypoint name and symbol.
Map Scale
Distance
Bearing
Cursor Coordinates
Map Cursor
9
Getting Started
Marking Waypoints
To mark your present position:
1. Hold down the ENTER/MARK key until the ‘New Waypoint’ window appears then release the
key. The window will show a default three-digit waypoint name/number (001), symbol (dot), and
position. You can leave the name as the auto-assigned number, but for this exercise, lets change
the name to ‘DOCK’.
2. Use the ARROW KEYPAD to highlight the waypoint name field (001) and press ENTER/MARK.
You will see that just the first ‘0’ is now highlighted.
3. Press LEFT on the ARROW KEYPAD to clear the name field.
Press ENTER/MARK
after entering the name.
4. Press UP or DOWN on of the ARROW KEYPAD until the letter ‘D’ appears, and then press RIGHT
to go to the next space to the right, then UP or DOWN again until ‘O’ appears. Repeat this until you
have entered the name ‘DOCK’. If you make a mistake and select an incorrect character, simply press
LEFT on the ARROW KEYPAD to backspace the cursor and then UP or DOWN to correct the entry.
(If you accidentally press ENTER/MARK before you are done, simply press ENTER/MARK again
and move the highlight to where you left off.)
5. After you have entered all the letters, press ENTER/MARK to confirm the name.
6. To access the waypoint symbol page, highlight the waypoint symbol field which is to the left of the
waypoint’s name and press ENTER/MARK. Note: The default symbol is a dot.
You can choose from a list
of useful symbols.
There are two Diver Down
waypoint symbols to select
from: the International version and the U.S. version.
10
7. You will see an alphabetical list of available waypoint symbols to choose from. Press the ARROW
KEYPAD UP or DOWN until you highlight the ‘ANCHOR’ symbol. You will see a scroll bar on the
right of the window indicating your current position on the entire list of symbols.
8. Press ENTER/MARK to confirm the ‘ANCHOR’ symbol.
9. Highlight ‘OK’ at the bottom of the window and press ENTER/MARK again to confirm the ‘OK’
prompt and save the waypoint.
The waypoint is now stored in memory. Note that waypoints may also be created graphically from
the map display or by manually entering position coordinates. Each of these techniques is described in
the reference section of the manual and/or on your GPSMAP 182/182C/232 Quick Reference Guide.
Going to a Destination
GPS is all about marking positions as waypoints and navigating to them using the receiver’s steering
guidance and map displays. We’ve already seen how to use the ENTER/MARK key to store our present
position, so it’s time to move on to the fun part—going to a destination.
Getting Started
Using the NAV Key
The NAV key, located on the keypad above the QUIT key, is the primary tool used to select a
destination waypoint, TracBack, or a route to navigate. The NAV key can be used in two primary
ways:
• Pressing NAV once displays a list of options from which you can select ‘Go To Point’, ‘Follow Route’,
‘Follow Track’, or ‘Stop Navigation’.
• Highlighting an on-screen waypoint or map item as a destination directly from the Map Page and
pressing NAV allows you to graphically select points to “Go To”.
Text entry for simulator
position.
For our simulated trip, you’re going to select a pre-programmed tour route using the first method.
This will also show how the MENU key is used throughout the GPSMAP 182/182C/232 system to
provide tab style options and functions. Let’s start by changing the position to where the practice route
is located.
To change the GPSMAP 182/182C/232 position in simulator mode:
Press the MENU key twice to display the list of Main Menu tab items.
Use the UP or DOWN arrow of the ARROW KEYPAD to highlight the ‘Systm’ tab.
Highlight ‘Set Position’ in the simulator setup window and press ENTER/MARK.
From the Initialize Position page, press the MENU key. You will see ‘Enter As Text’ highlighted,
then press ENTER/MARK.
5. On the Enter Position window, press ENTER/MARK then use the ARROW KEYPAD to enter
N34°56.800’, W076°24.066’ and press ENTER/MARK when done, then press QUIT to return
to the Map Page.
1.
2.
3.
4.
For future practice, you
may skip steps 3 and 4
and point to a location
from the Initialize Position
page.
11
Getting Started
Simulated Tour
To activate the practice route stored in memory for navigation:
1. Press NAV. The option list page will appear. (If we were selecting a single waypoint to navigate
to rather than a route, we could highlight the waypoint on the map, press NAV and then press
ENTER/MARK.)
2. Use the ARROW KEYPAD to highlight the ‘Follow Route’ option. Press ENTER/MARK to confirm.
3. The Select Route page will appear, with the ‘GPSMAP TOUR’ route highlighted.
4. Press ENTER/MARK then highlight ‘Activate’ and press ENTER/MARK again.
You can also Invert a
route to follow it in
reverse.
To zoom in to a closer map scale:
1. Repeatedly press the IN key until you select the 3 nm scale.
You may also hold the IN or OUT keys down to quickly scroll through the map scales. The
Map Page should now display five waypoints chained together in a simple route, with your boat at
the first route waypoint.
A data field at the top of the page will now display the speed, distance to the second route
waypoint, your position coordinates and a compass ribbon which shows you which way to go. To get
started, let’s enter a speed for our vessel, which we can do from the Main Menu Page.
To enter a boat speed:
The Set Position, Track
Control, Track and Speed
fields will only show while
in simulator mode.
1. Press the MENU key twice to display the Main Menu Page.
2. Use the ARROW KEYPAD to highlight the ‘Systm’ tab, then press RIGHT then DOWN until the field
below the word ‘Speed’ is highlighted and press ENTER/MARK.
3. Use the ARROW KEYPAD to enter a speed of 60 knots.
4. Press ENTER/MARK to finish, and QUIT until you return to the Map Page.
12
Once a speed has been entered, you’ll notice that the map will automatically begin to move slowly,
keeping your boat centered on the display. The direction of movement, also called ‘track’, will be
controlled by the simulator.
You’ll now have a clearer picture of the route you are navigating. Keep in mind that whenever you
do exceed the usable range of the built-in database or the optional MapSource or BlueChart data in use,
the range field will display ‘OVERZOOM’ to indicate that you should exercise extreme caution using the
map data. Press the IN key to zoom into the 2 nm scale. Now that you’ve zoomed in a little closer to
your route, you can pan ahead of your vessel with the cursor to review map items and create on-screen
waypoints. Try moving the cursor to highlight the ‘TOUR3’ waypoint— just use the ARROW KEYPAD
to move the cursor as close as possible to the waypoint. (To move the cursor in small increments, try
a series of short key presses.)
Once the cursor is over the TOUR3 waypoint, you’ll notice that the waypoint symbol and name will
become highlighted. The data field at the top of the page will display the waypoint name, the range and
bearing from your present position, and the coordinates for the waypoint.
Getting Started
Reviewing/Creating
Map Waypoints
The waypoint will ‘highlight’
when the cursor is moved
over it.
To review the waypoint page for a selected waypoint:
1. Press the ENTER/MARK key.
2. To return to the Map Page, press ENTER/MARK again or press QUIT.
The cursor can also be used to create new waypoints right from the map display.
To create a new waypoint using the cursor:
1. Use the ARROW KEYPAD to move the cursor as close as possible to the following position:
N35º 02.914; W 076º 26.152’ (Use the data window to verify the cursor position.)
2. Press and release the ENTER/MARK key to capture the cursor position. Do not hold the button
down, as doing so will mark your present position, not the map position.
3. Use the ARROW KEYPAD to highlight the waypoint symbol field to the left of the waypoint
name/number.
Waypoint numbering
will start with 001 and
continually count up,
even if the waypoint
name has been deleted.
4. Press ENTER/MARK to access the symbol page.
5. Press UP or DOWN on the ARROW KEYPAD to select the ‘Shipwreck’ symbol and press
ENTER/MARK to confirm.
6. Highlight ‘OK’ at the bottom and ENTER/MARK again to finish.
13
Getting Started
Compass/Numbers
Navigation Pages
Current
Destination
Data Fields
Compass Ring
Pointer Arrow
Compass Page
Now that we’re navigating to an actual destination, let’s move on to the GPSMAP 182/182C/232
navigation pages by pressing the PAGE key.
The Compass Page provides graphic steering guidance to a destination waypoint, with an emphasis
on the bearing to your destination and current direction of travel. The middle of the page features a
rotating ‘compass ring’ that shows your course over ground (track) while you’re moving, and a bearing
pointer that indicates the direction of the destination (bearing) relative to the course over ground.
The compass ring and pointer arrow work independently to show—at a glance—the direction of your
movement and the direction to your destination. For instance, if the arrow points up, you are going
directly to the waypoint. If the arrow points any direction other than up, turn toward the arrow until it
points up—then continue in that direction.
The current speed, distance to the next waypoint, turn angle and current position are displayed
at the top of the screen. This page provides better steering guidance when travelling at slower speeds
and/or when making frequent directional changes. When you are not navigating to a waypoint, the
compass will show your direction of travel as you move but the arrow will not appear.
Press PAGE to see the next page appearing in the main sequence, the Numbers Page. The
Numbers Page allows for precision navigation to 1 degree of steerage. The default page will display 3
large numbers fields. You may customize the Numbers Page to display the size and number of fields
along with the type data you wish to see. (See pages 22-23 for changing the types of data.)
To split the data fields:
1. Press MENU, then press ENTER/MARK. Highlight the ‘SPEED’ data field and press MENU.
2. Highlight ‘Split Numbers’, then press ENTER/MARK. You will now see four new data fields. Press
QUIT when done.
14
Numbers Page
Numbers Page with
split numbers
3. To return to the original configuration, repeat the above steps, but instead of ‘Split Number’, select
either ‘Merge Numbers’ or ‘Defaults’. Press QUIT when done.
Let’s move on to the Highway Page by pressing the PAGE key.
The GPSMAP 182/182C/232’s Highway Page also provides graphic steering guidance to a destination waypoint, placing greater emphasis on the straight-line desired course and the distance and direction you are off course. As you head toward your destination, the middle of the screen provides visual
guidance to your waypoint on a moving graphic “highway.” Your present position is at the bottom
center of the highway display. The line down the middle of the highway represents your desired course.
As you navigate toward a waypoint, the highway will actually move—indicating the direction you’re off
course. To stay on course, simply steer toward the center of the highway or “keep it on the road”. The
four default data fields at the top of the page indicate ‘Speed’ and ‘Distance To Next’ point, along with
‘To Course’ which shows the bearing to get you back on course and ‘Time To Next’ point. Additionally,
a compass ribbon is displayed to show your current heading along with a dark, vertical bar which will
indicate the direct bearing to the navigation point. When the dark, vertical indicator (or arrow) lines
up with the lighter red bar in the middle, you are heading directly to the navigation point. Use the
Highway Page as your primary navigation page (in lieu of the Compass Page) when your main concern
is following a defined course.
Whenever the GPSMAP 182/182C/232 is in simulator mode, you can also adjust your speed and
course from the Highway Page using the ARROW KEYPAD. As you head toward each waypoint in the
tour route, try adjusting your boat speed and course to get a feel for how the highway works.
Getting Started
Highway Page
Current
Waypoint
Data Fields
Desired Course
Present Position
Zoom Scale
To adjust the simulated boat speed/heading from the Highway Page:
1. Press the UP arrow of the ARROW KEYPAD to increase the speed in 10 knot/kph/mph increments.
Press the DOWN arrow to decrease the speed in the same increments. Press the LEFT and RIGHT
arrows of the ARROW KEYPAD to steer the boat.
Notice that as you get off course, the highway will move to give you graphic guidance to get
back on course. You can zoom in or out on the Highway display for a smaller or larger view. Five
available settings range from 1X to 16X, with a default setting of 8X. The current scale will appear
in the bottom right of the display.
To zoom in or out on the highway display:
1. Press either the IN or OUT key to increase or decrease the zoom scale.
Steer towards the center
of the highway or towards
the black vertical bar on
the compass ribbon to get
back on course.
15
Getting Started
Active Route Page/
Main Menu Page
You may choose from
several different types of
data.
Current
Waypoint
Active Route Page
The main pages’ data fields may also be configured to display several different information categories
(see pages 22-23 for the complete list). On the Highway Page, let’s change the ‘TIME TO NEXT’ field
to ‘TIME OF DAY’.
To change a data field:
1. Press the MENU key to display the Highway Page options.
2. Press DOWN on the ARROW KEYPAD, highlight ‘Change Numbers’ and press ENTER/MARK.
3. Once the menu window disappears, use the ARROW KEYPAD and highlight ‘TIME TO NEXT’, then
press ENTER/MARK.
4. On the alphabetical list of options, press the ARROW KEYPAD UP or DOWN until you highlight ‘TIME
OF DAY’ and press ENTER/MARK. (You will see a scroll bar on the right side of the window indicating
your current position on the entire list of options.)
5. Press the QUIT key when done.
Press PAGE to see the last page appearing in the main sequence, which is the Active Route Page.
Whenever you have activated a route or Follow Track, this page will show each waypoint name along
with useful data for each point. As you navigate the route, the information will automatically update
to indicate the next point along the route. For more detailed information on the Active Route Page,
see page 48.
As you’ve seen, the primary pages provide map and navigation information. The tour’s last page is
the Main Menu page, which allows access to the GPSMAP 182/182C/232’s waypoint, route and planning
functions, as well as various operational and navigation setup features, and celestial and tide data.
The Main Menu is available from any page, and is accessed through the MENU key.
To access the main menu page:
1. Press the MENU key twice.
16
The Main Menu page lists 18 menu ‘tabs’ that are divided into categories by function. You can
view a particular menu by simply highlighting the desired tab, which will then show any secondary
submenu tabs and options for that tab.
To get a basic feel for how the Main Menu page works, let’s delete the two waypoints you created
during the simulated tour. This will ensure that you have a clean slate once you start navigating in
your home waters.
To select the Points (Waypoint) submenu tab:
Getting Started
Deleting Waypoints/
Powering Off Unit
1. Use the ARROW KEYPAD to highlight the ‘Points’ menu tab. You will see a list of stored waypoints
appear to the right of the Main Menu list.
2. Press to the right one time on the ARROW KEYPAD and you will see the ‘User’ tab highlighted.
3. Press down on the ARROW KEYPAD until waypoint 001 with the shipwreck symbol is highlighted.
4. You may delete the waypoint by either pressing MENU, then highlighting ‘Delete Waypoint’ or press
ENTER/MARK and then highlight ‘Delete’ from the Waypoint Edit page.
5. Press ENTER/MARK to delete the waypoint, then ENTER/MARK again to confirm. Repeat the
above steps to delete the ‘Dock’ waypoint also.
Congratulations! You’ve now gone through the basic operation of the Garmin GPSMAP 182/
182C/232. Your new digital chartplotter is a powerful tool with many advanced features not covered
in the Getting Started tour. For detailed instructions on using these features or performing a specific
task, please refer to the Quick Reference Guide or the appropriate reference section of this manual.
If equipped with GSD 20, refer to the “GSD 20 Sounder Module with Garmin Chartplotters” (19000241-03) for sonar operations. The unit is still in Simulator mode for practice, but will automatically
return to it’s ‘Normal’ operation mode when you shut it off and turn it back on.
Submenu Tabs
Main Menu
To turn the GPSMAP 182/182C/232 off:
1. Press and hold the POWER key for about 2 seconds, until the screen is blank.
2. When the screen is blank, release the POWER key.
The next section of the manual describes the pages and functions of the GPSMAP 182/182C/232 in
detail. If you are unable to locate a specific option or function, please refer to the index on pages 90-92.
Thank you for choosing the Garmin GPSMAP 182/182C/232 navigation unit. We hope it will be a
useful and fun tool for you wherever you go!
17
Map Page
Reference
Map Page
Data Fields
Land
User
Waypoint
Map
Item
Boat Icon
Water
Navaids
Geographic Name
Map Page shown using optional
MapSource data.
18
Map Scale
The GPSMAP 182/182C/232’s Map Page provides a comprehensive display of electronic cartography, plotting and navigational data. When using the unit with the optional BlueChart data or
MapSource software, the map display shows your boat on a digital chart, complete with geographic
names, map items, navaids and a host of other chart features. It also plots your track and displays any
routes and waypoints you create. An on-screen cursor lets you pan and scroll to other map areas, determine the distance and bearing to a position, and perform various route and waypoint functions.
When the cursor is active, an additional data window will appear below the data fields to indicate
the position, range and bearing to the cursor or a selected waypoint or map item. The map scale
displays at the bottom right of the page.
The (ZOOM) IN and (ZOOM) OUT keys, combined with the ARROW KEYPAD, let you select
zoom ranges and move the cursor. Two basic map operating modes, position mode and cursor mode,
determine what cartography is shown on the map display. Position mode pans the cartography to keep
the present position marker within the display area, while cursor mode pans the cartography to keep
the cursor within the display area.
The GPSMAP system will always power up in the position mode, with your vessel centered on
the map display.
• When sufficient map coverage is not available to keep the boat centered, the boat icon will move
toward the edge of the display.
When the ARROW KEYPAD is pressed, the GPSMAP 182/182C/232 will enter cursor mode. In
cursor mode:
• The cursor can be moved over the map display using the ARROW KEYPAD.
• Whenever the cursor reaches the edge of the display, the map will scroll forward under the cursor.
Keep in mind that the boat icon will move with the map scrolling and may go off the display
screen (you may not be able to see your present position).
• When the cursor is stationary, a fixed coordinate position will appear in the position field. Note that
the distance and bearing will change as the boat’s position changes.
• Whenever you zoom in cursor mode, the cursor will be centered on screen.
• To return to position mode, press the QUIT key.

Reference
Map Page Cursor
When the cursor reaches the edge of the map, the unit may pause as it loads new
map data.
Using the Cursor
The cursor allows you to pan away from your present position and scroll to other map areas around
the world (even outside of your current detail coverage). As you pan past the edge of the current map
display, the screen will actively scroll forward to provide continuous map coverage. You will see an
hourglass symbol by the pointer while the unit is busy drawing new map detail.
Move the cursor over
an item on the map to
highlight it.
To move the cursor:
1. Press the ARROW KEYPAD to move the cursor in an up, down, left or right direction.
As you move the cursor, the distance and bearing from your present position to the cursor will be
displayed in the data window, along with the cursor’s position coordinates. Keep in mind that when
the cursor is stationary, the distance and bearing from your present position will change as your boat
moves. The cursor may also be used to ‘snap’ to on-screen waypoints and map items, allowing you to
review a selected position directly from the map display.
To select an on-screen waypoint or map item with the cursor:
1. Use the ARROW KEYPAD to move the cursor to the desired waypoint or map item (if there are
several waypoints grouped closely together, zoom in closer for a better view).
2. When a waypoint or map item is selected, it will become highlighted on screen, with the name and
position displayed. Press ENTER/MARK to show details of the map item. When using BlueChart or
MapSource data, additional information tabs will appear. Use the ARROW KEYPAD to highlight
the individual tabs to display the information and additional options.
Additional information
tabs.
Pressing ENTER/MARK
while highlighting a map
item will bring up additional details and options.
Option buttons
19
Reference
Map Page Cursor
and Zooming
To eliminate the cursor and re-center your position on-screen:
1. Press the QUIT key.
The cursor may also be used to create new waypoints directly from the map.
To create a waypoint with the cursor:
1. Use the ARROW KEYPAD to move the cursor to the desired map position.
2. Press the ENTER/MARK key and the ‘New Map Waypoint’ window will appear. If the cursor is on a
map item, you will get a new window with details about the item when ENTER/MARK is pressed.
Press ENTER/MARK again on the highlighted ‘Create Wpt’ option.
3. Press ENTER/MARK to confirm the new waypoint using the default three-digit name and symbol.
Selecting Map Scales
The map display has 28 available range scales from 20 ft. to 800 mi. (5 m to 1200 km). The
map scale is controlled by the IN and OUT keys, with the current scale displayed at the bottom
right of the data window.
Creating New Map Waypoint
To select a map scale:
1. Press the OUT key to zoom out and the IN key to zoom in.

Using Built-In Basemap
Using BlueChart/MapSource Data
20
Overzoom, no additional data
The scale value represents the distance from one end of the scale bar to the other.
The GPSMAP 182/182C/232’s system has a built-in worldwide database to 20 mi, with more
detailed coverage available through the use of the optional BlueChart or MapSource data. The GPSMAP
182/182C/232 will display cartography as long as there is chart information available for the range
you’ve selected. Map coverage will conform to the following conditions:
• When the selected zoom range is covered by either the internal database, BlueChart, or MapSource
data, cartography will be displayed.
• When the selected zoom range is covered by both the internal database and BlueChart/MapSource
data, cartography will be displayed using the data with the best resolution.
• When the selected zoom range exceeds the resolution of the data in use, overzoom cartography will
be displayed and an ‘overzoom’ warning will appear below the scale field.
Map Page Options
Many features of the GPSMAP 182/182C/232 are menu driven. Each of the main pages have
an options menu, allowing you to custom tailor the corresponding page to your preferences and/or
select special features that specifically relate to that page. The data window, located at the top of the
main pages provides a user-selectable layout of various types of useful data. Each data field may be
configured to display any one of several data options. The data window layout may also be changed to
display additional data fields and change the actual size of the data displayed.
Reference
Map Page Options
The GPSMAP 182/182C/232’s Map Page provides access to functions and features relating to the
Map Page and the layout options.
To display the Map Page options:
1. Press MENU.
To select a menu option:
1. Use the ARROW KEYPAD to highlight the desired option and press ENTER/MARK.
The available options are Full Screen Map/Show Data, Change Numbers, Measure Distance, Show
Sonar (If equipped with GSD 20. See the “GSD 20 Sounder Module with Garmin Chartplotters” (19000241-03) for details on this feature.). Set Up Map and Turn Declutter On/Off. Following are details on
using each of these options.
• Full Screen Map/Show Data — toggles between a Map Page without or with data fields on the map
display.
Map Page Options
To maximize the map/show data fields:
1. Highlight the ‘Full Screen Map’ option and press ENTER/MARK. The Map Page will now be maximized with no data fields.
2. To show the data fields again, press MENU, highlight ‘Show Data’ and press ENTER/MARK.
21
Reference
Map Page Options
• Change Numbers — allows you to specify the type of data displayed in each data field used on the
map display. This option is available from any of the main pages.
To change a data field:
1. From the menu, use the ARROW KEYPAD to highlight the ‘Change Numbers’ option and press
ENTER/MARK.
2. Move the field highlight to the data field you want to change and press ENTER/MARK.
3. Move up or down on the list using the ARROW KEYPAD to highlight the data you want to display,
and press ENTER/MARK. To exit, press QUIT.
The following data options are available for data fields on the main pages:
Highlight the field you
wish to change
Choose the type of data
you wish to display.
22
• BEARING – Compass direction from your position to destination
• COMPASS – Compass ribbon
• COURSE – Desired Track
• DEPTH* – Depth below transducer
• DIST TO DESTINATION – Distance to final waypoint
• DIST TO NEXT – Distance to next waypoint
• ELEVATION – Elevation above/below MSL (Mean Sea Level)
• ETA AT DESTINATION – Estimated Time of Arrival to final waypoint
• ETA AT NEXT – Estimated Time of Arrival to next waypoint
• GPS ACCURACY – Shows estimated GPS accuracy
• HIGHWAY – Smaller version of the Highway Page
• MAXIMUM SPEED – Fastest speed the unit has traveled
• MOVE AVERAGE SPEED – Average moving speed
• MOVE TRIP TIME – Time unit has been moving for a trip
• OFF COURSE – Distance from desired track
• POINTER – Arrow points to your destination
• POSITION – Current position coordinates
• SONAR* – Compressed view of sonar data
• SPEED – Speed over ground
• TIME OF DAY – Current time
• TIME TO DESTINATION – Time to final waypoint
• TIME TO NEXT – Time to next waypoint
• TO COURSE – Bearing to desired track
• TOTAL AVERAGE SPEED – Total average speed
• TOTAL TRIP TIME – Total travel time of trip, stopped, and moving
• TRACK – Current compass direction of travel
• TRIP ODOMETER – Trip Odometer
• TURN – Directional amount of turn needed to match bearing
• VELOCITY MADE GOOD – Velocity Made Good to destination
• VOLTAGE – Current voltage reading being received by unit
• WATER SPEED* – Speed through the water
• WATER TEMP. LOG* – Timeline graph of the transducer’s temperature reading.
• WATER TEMPERATURE * – Water temperature
*If receiving proper sonar data from other device, such as a GSD 20 Sounder Module.
NOTE: COMPASS, HIGHWAY, POSITION, and SONAR will only be available on medium and large sized data
fields.
You may also choose to ‘merge’ the four medium, default data fields to a single, large field for better
readability or you may ‘split’ any or all of the default data fields to show 4 small data fields. This option
is available from any of the main pages.
To Split or Merge the Numbers fields:
1. While in ‘Change Numbers’ mode, highlight the data field you want to change and press MENU.
Reference
Map Page Options
Single, large data field
I
Default, medium fields
Split, small fields
2. Choose ‘Split Number’ or ‘Merge Numbers’, then press ENTER/MARK. You will now see four new
data fields or one large field. Press QUIT when done.
3. To return to the factory configuration, repeat the above steps, but instead choose ‘Defaults’, then
press ENTER/MARK. Press QUIT when done.
Cursor
Coordinates
• Measure Distance— allows you to measure the bearing and distance between any two points on the
map display.
Distance and
Bearing
To measure the Bearing/distance between two points:
1. Highlight the ‘Measure Distance’ option and press ENTER/MARK. An on-screen pointer will appear
on the map display at your present position with ‘ENT REF’ below it.
2. Move the cursor to the desired reference point (the point that you want to measure from) and press
ENTER/MARK.
3. Move the cursor to the point that you want to measure to. The bearing and distance from the reference point and cursor coordinates will be displayed in the data window at the top of the display.
Press the QUIT key to finish.
Map Cursor
Full screen map shown
(with BlueChart data)
23
Reference
Map Page Options
Main Menu—
Map Configuration Tab
• Set Up Map— allows you to configure the map display to your preferences, including map detail,
map orientation, automatic zoom, and various map items and points. The map set up option uses a ‘file
tab’ feature, making it easier to organize the various settings for ease of use. The following table lists the
file tabs and the settings available under each tab:
General
Detail, Orientation, AutoZoom, Color Mode (182/232 monochrome only)
Source
Basemap, Data Card Maps
Waypoints
Waypoints, Active Route
Points Spot
Soundings, Tide Stations, Services
Navaids
Symbol Set, Text Size, Light Sectors
Nav Line
Heading Line, Bearing Line, Course Line
Track
Saved Tracks, Track Log
Other
Accuracy Circle, Lat/Lon Grid, Map Outlines
To change a map setup feature:
1. From the Map Page menu, highlight ‘Set Up Map’ and press ENTER/MARK.
2. Move LEFT or RIGHT on the ARROW KEYPAD to highlight the desired tab, then UP or DOWN on
the ARROW KEYPAD to highlight to the setting you want to change and press ENTER/MARK.
3. Move UP or DOWN on the ARROW KEYPAD to highlight to the desired setting and press
ENTER/MARK. To exit, press QUIT.
General Tab
(182C shown)
24
General Tab
Detail— Most, More, Normal, Less, Least: controls how much map detail you will see. This setting
only applies to any map feature set to “Auto”. Those features which have a specified scale or turned
“Off” are unaffected by this setting.
Orientation— North Up— fixes the top of the map display to a north heading; Track Up— fixes the
top of the map display to the current track heading; Course Up— fixes the map so the direction of
navigation is always “up” and turns the navigation leg line vertical on the screen.
AutoZoom— On/Off: when “On” the map will automatically adjust the map scale to a lower scale as
you approach you destination point.
Color Mode (182/232 monochrome only) — Water Mode, Land Mode: when in “Water Mode”, land
will appear as a dark color and water will be light. In “Land Mode”, land will appear as a light color
and water will be dark. If using optional BlueChart data, it is recommended to use ‘Water Mode’.
Source Tab
Basemap— On/Off: turns the built in base map on or off.
Data Card Maps— On/Off: turns all optional BlueChart/MapSource data loaded on the data card
on or off. The ‘Data Card Maps’ option box shows a list of the optional BlueChart/MapSource data
loaded on the data card. Each area is described by name and may be deselected if you do not
Reference
Map Page Options
wish to display the data on the Map Page.
To display the Map Information Page:
1. Highlight the ‘Data Card Maps’ option box and press ENTER/MARK.
2. Use the ARROW KEYPAD to scroll through the list of maps.
3. To select/deselect a map, highlight the check box to the left of the name of the desired map. Press
ENTER/MARK to select/deselect the map. The map is selected and will be displayed on the Map
Page when an “” appears in the box adjacent to that map. You may also press MENU and
choose to ‘Show All’ or ‘Show None’ and press ENTER/MARK.
4. To display detailed information and notes for each area, highlight the desired name and press
ENTER/MARK. To view the notes for that area, choose ‘Show Notes’. To scroll through the notes,
you may either highlight the notes, press ENTER/MARK and use the ARROW KEYPAD to scroll
UP, DOWN, LEFT, and RIGHT or press MENU and choose the desired scroll option.
Waypoints Tab— Waypoints/Active Route
Text— None, Small, Medium, and Large: controls the screen size of the name.
Zoom— Auto, Off, 120 ft.-800 mi.: sets the maximum scale at which the feature should appear on
the screen. Some types of data will only show up to certain zoom scales.
Points Tab— Spot Soundings/Tide Stations/Services
Text— None (except Spot Snd.), Small, Medium, and Large: controls the screen size of the name.
Zoom— Auto, Off, 120 ft.-800 mi.: sets the maximum scale at which the feature should appear on
the screen. Some types of data will only show up to certain zoom scales.
Navaids Tab—
Symbol Set— Auto, Garmin, NOAA, International: controls the desired navaid symbol set.
Auto - BlueChart maps are drawn using symbols similar to the NOAA/NIMA standard.
Non-BlueChart maps are drawn using traditional Garmin symbols.
Garmin - All maps are drawn using traditional Garmin symbols.
Source Tab
‘Data Card
Maps’ Map
Information
Page
Waypoints
Tab
Points Tab
25
Reference
Map Page Options
Navaids Tab
Nav Line Tab
Track Tab
Other Tab
26
Map Setup
Menu Options
NOAA - All maps are drawn using a symbol set similar to NOAA/NIMA.
International - All maps are drawn using a symbol set similar to the IALA symbol set.
Text Size— Small, Medium, and Large: controls the screen size of the name.
Light Sectors— Off, Auto, On: controls the drawing light sectors on the map. Color units indicate the
actual color of each sector using the color of the light. Monochrome units draw white and yellow sectors as white, and draw blue, red & green sectors as dark gray.
Off— No light sectors are ever drawn.
Auto— Light sectors appear when you point to them with the map cursor.
On— Light sectors are drawn for all lights that have them.
Nav Line Tab—
Heading Line— On/Off: draws an extension from the end of the boat icon in the direction of travel.
Bearing Line— On/Off: toggles the black/white line which points to the current navigation point.
Course Line— Auto, Off, 120 ft.-800 mi.: sets the maximum zoom scale at which the desired course
line should appear on the screen.
Track Tab— Saved Tracks/Track Log
Zoom— Auto, Off, 120 ft.-800 mi.: sets the maximum scale at which the feature should appear on the
screen. Some types of data will only show up to certain zoom scales.
Other Tab—
Accuracy Circle— On/Off: toggles the circle “On” and “Off”. The circle represents the approximate
accuracy of the unit based on EPE, DOP, and basemap quality. You position will be within the circle.
Lat/Lon Grid— Text— None, Small, Medium, and Large: controls the screen size of the name.
Zoom— Auto, Off, 120 ft.-800 mi.: sets the maximum scale at which the feature should appear.
Map Outlines— On/Off: toggles the coverage boxes for BlueChart/MapSource data “On” and “Off”.
• Turn Declutter On/Off — toggles between showing spot soundings and map outlines for easier viewing.
From the map setup page, you can access the following menu options by pressing MENU:
• Defaults— restores settings back to factory settings for the tab highlighted.
• All Map Defaults— restores settings back to factory settings for all tabs.
Compass Page
The GPSMAP 182/182C/232 features two different navigation pages: Compass and Highway.
Whenever a NAV, Follow Track (TracBack) or Follow Route have been activated, the GPSMAP
182/182C/232’s Compass Page will guide you to your destination with digital readouts and a graphic
compass display, which includes a bearing pointer. Use this page (instead of the Highway Page) when
travelling at slower speeds, when making frequent directional changes, or where straight-line navigation is not possible due to obstructions or terrain. The middle of the page features a rotating ‘compass
ring’ that shows your course over ground (track) while you’re moving. Your present course over ground
is indicated at the top of the compass ring. A bearing pointer arrow, in the middle of the compass ring,
and a bearing ‘bug’ indicator on the outside of the compass ring, indicate the direction of the destination (bearing) relative to the course over ground. The compass ring and pointer arrow work independently to show—at a glance—the direction of your movement and the direction to your destination.
For instance, if the arrow points up, you are going directly to the waypoint. If the arrow points any
direction other than up, turn toward the arrow until it points up, then continue in that direction.

The bearing pointer, bearing bug and/or compass ring may point in various directions
when you are stationary or at very low speeds. Once you start moving, the pointer
will be correct.
The GPSMAP 182/182C/232’s Compass Page features a menu page that provides access to layout
and data field options. The data window, located at the top of the page, provides a user-selectable
layout of various types of useful data. Each data field may be configured to display several data options.
The data window layout may also be changed to display more/less data fields and change the actual
size of the data displayed.
Reference
Compass Page
Current
Go To
Bearing
‘Bug’
Bearing
Pointer
Destination
Data Fields
Compass
Ring
To display the Compass Page options:
1. Press MENU.
To select a menu option:
1. Use the ARROW KEYPAD to highlight the desired option and press ENTER/MARK. For detailed
instructions on changing the data fields and layout of the Compass Page, see pages 22-23.
27
Numbers Page
Reference
Numbers/Highway Pages
The Numbers Page provides a quick reference for the important data you want to display. The
default page will display three large, user-selectable data fields showing a compass ribbon, speed,
and current position coordinates. You may also choose to show the three data fields in large lettering
for better readability or you may ‘split’ any or all of the data fields to show 4 smaller data fields. For
detailed instructions on changing the data fields and layout of the Numbers page, see pages 22-23.
Highway Page
Numbers Page shown
with middle data field
split into four fields
As you head toward your destination, the highway perspective moves to indicate your progress to
the waypoint and which direction you should steer to stay on course. If you are navigating a route, the
Highway Page shows each route waypoint in sequence connected by a red “road” with a yellow line
down the middle, which is your desired track line. Nearby waypoints not in the active route can also
be displayed. The highway perspective scale may also be zoomed in or out to display a larger or smaller
view of the highway. Five settings are available from 1X to 16X, with a default setting of 8X.
Current Nav Point
Data Fields
Route Waypoints
To change the highway perspective scale:
User Waypoint
1. Press the IN or OUT key to select the desired setting.
Desired Track Line
28
Current Position
Whenever a Go To, TracBack or route has been activated, the GPSMAP 182/182C/232’s Highway
Page will provide digital and graphic steering guidance to the destination with the Navigation Page.
The top half of the Highway Page features user-selectable data fields that display useful navigation data.
Additionally, a compass ribbon is displayed to show your current heading along with a dark, vertical
bar which will indicate the bearing to your course. To stay on course, steer towards the dark, vertical
indicator (or arrows) until it lines up with the lighter red bar in the middle. The bottom section of
the screen provides visual guidance to the waypoint on a graphic highway display. The line down the
center of the highway represents your desired track line.
Zoom Scale
The GPSMAP 182/182C/232’s Highway options page allows you to define the data fields and select
which waypoints and track are displayed on screen. The data window, located at the top of the page,
provides a user-selectable layout of various types of useful data. Each data field may be configured to
display several data options. The data window layout may also be changed to display additional data
fields and change the actual size of the data displayed.
Reference
Highway Page Options
The GPSMAP 182/182C/232’s Highway Page features a menu options page that provides access to
functions and features relating to the Highway Page and the layout options.
To display the Highway Page options:
1. Press MENU.
To select a menu option:
Check or uncheck the
options you wish to
show/not show on the
Highway Page.
1. Using the ARROW KEYPAD, highlight the desired option and press ENTER/MARK.
The following options are available from the Highway Page menu:
• Set Up Highway— allows you to select what waypoints and tracks are shown on the Highway
display. Use the ARROW KEYPAD and ENTER/MARK key to select/deselect the desired options. Four
options are available:
Preview
Window
Highway Page Set Up
• Active Route Waypoints— all active route waypoints.
• User Waypoints— only nearby waypoints to the route.
• Track Log— current active track log.
• Saved Tracks— any saved track logs near the route.
• Change Numbers— allows you to specify the type of data displayed in each data field used on
the map display. For detailed instructions on changing the data fields and layout of the Highway
page, see pages 22-23.
Active Route Page
Whenever you have activated a route in the GPSMAP 182/182C/232 system, the Active Route
page will show each waypoint of the active route, along with various, user-selectable types of data. For
additional details on the Active Route Page, see page 48.
Active Route Page
29
Reference
Creating Waypoints
Creating and Using Waypoints
The Garmin GPSMAP 182/182C/232 stores up to 3000 alphanumeric waypoints with a userdefined icon, comments and depth available for each waypoint. Waypoints can be created using two
basic methods:
• ENTER/MARK key– used primarily for marking your present position, the ENTER/MARK key also
provides options that allow you to select a map position or map item from the map display. You may
also enter a new waypoint’s position coordinates manually (from a chart, etc.).
Press ENTER/MARK
to use the default name
and symbol.
• Graphically– allows you to define a new waypoint position from the map display using the ARROW
KEYPAD.
ENTER/MARK Key
The Garmin GPSMAP 182/182C/232’s ENTER/MARK key lets you quickly capture your present position— or cursor or map item position— in order to create a new waypoint. You must have a
valid position (2D or 3D) fix to mark your present position. This can be determined by looking at the
GPS Tab on the Main Menu. When you move the cursor over a map item, you will see a highlighted
description of that item. You may also use this option to manually enter waypoint coordinates.
To mark your present position:
Highlight a field and
press ENTER/MARK
to enter a new symbol,
name, comment, or
depth.
30
1. Press and hold the ENTER/MARK key until the ‘New Waypoint’ window appears then release it.
You will see a default three-digit name and symbol for the new waypoint.
2. To accept the waypoint with the default name and symbol, press ENTER/MARK to confirm the
highlighted ‘OK’ prompt.
3. To enter a different name, highlight the name field and press the ENTER/MARK key, then use the
ARROW KEYPAD to enter the new letter/numbers and press ENTER/MARK when done. Note: You
may use up to 10 alphanumeric characters for the name.
4. To enter a different symbol, highlight the symbol field to the left of the name and press the ENTER/
MARK key, then use the ARROW KEYPAD to highlight the new symbol and press ENTER/MARK.
5. To enter optional comments or a depth, highlight the “Comments” or “Depth” field to the right
of the position coordinates and press the ENTER/MARK key, then use the ARROW KEYPAD to
enter a value and press ENTER/MARK.
6. To manually enter a set of coordinates, highlight the coordinates and press the ENTER/MARK
key, then use the ARROW KEYPAD to enter the new coordinates and press ENTER/MARK when
done.
Reference
Creating Waypoints
7. When done, use the ARROW KEYPAD to highlight the ‘OK’ prompt and press ENTER/MARK to
save the waypoint into memory.
Creating Waypoints Graphically
Waypoints may also be quickly created from the map display, which allows you to ‘point and shoot’
at any map position to create a new waypoint. To mark a map item, select the desired map item with
the cursor. When selecting a map item, the option ‘Create Wpt’ will appear in addition to a description
of that point and its distance and bearing from your current position.
Map waypoint from nonmap item.
To create a new waypoint graphically:
1. Use the ARROW KEYPAD to move the cursor to the desired map position. If you want to create the
new waypoint at an on-screen map item, highlight the map item on the map display.
2. Press and release the ENTER/MARK key to capture the cursor position. Do not hold the button
down, as doing so will mark your present position, not the map position.
If you are not using a map item to create a waypoint, go to step 4.
3. Highlight ‘Create Wpt’ or ‘OK’ and press the ENTER/MARK key.
4. To accept the waypoint with the default name and symbol, press ENTER/MARK.
Choose ‘Create Wpt’ to
use a map item for a
new waypoint.
5. To change the name, symbol or add a comment or depth, highlight the appropriate field and press
ENTER/MARK. Make your changes and press ENTER/MARK when done.
6. After entering and confirming your changes, move the field highlight back to the ‘OK’ prompt and
press ENTER/MARK.
31
Reference
Editing Waypoints
Submenu
Tabs
Reviewing and Editing Waypoints
Once you have created and stored a waypoint, it may be modified, reviewed, renamed, moved or
deleted at any time through the Waypoint Edit Page. The Waypoint Edit Page is available for any stored
waypoint by highlighting the desired waypoint from the map display or selecting it from the waypoint
lists under the ‘Points’ tab in the Main Menu and pressing the ENTER/MARK key once.
To access the Waypoint Edit Page:
1. Use the ARROW KEYPAD to highlight the desired waypoint on the map display. You may also
press MENU twice, highlight the ‘Points’ tab, and then highlight a waypoint from the ‘User’, or
‘Proximity’ waypoint lists.
Waypoint List
2. Press ENTER/MARK to display the Waypoint Edit Page.
From the Waypoint Edit Page, you may change the name, symbol, comment, position coordinates,
or depth for the selected waypoint. Once the changes have been made, highlight ‘Next’ and press
ENTER/MARK to save them or press QUIT.
To change the waypoint name:
1. Highlight the waypoint name field and press ENTER/MARK.
2. Use the ARROW KEYPAD to enter a new name and press ENTER/MARK when done.
Symbol
To change the waypoint symbol:
Name
1. Highlight the waypoint symbol field to the left of the waypoint name and press ENTER/MARK.
Comment
2. Use the ARROW KEYPAD to select the desired symbol and press ENTER/MARK when done.
To change the Comment/Position Coordinates/Depth:
Coordinates
1. Highlight the desired field and press ENTER/MARK.
2. Use the ARROW KEYPAD to edit/enter the data. To drop to the next line, press to the right on
the ARROW KEYPAD.
Depth
32
Waypoint Edit Page
3. Press ENTER/MARK when done.
To move the waypoint on the map:
1. From the Waypoint Edit Page, highlight ‘Show Map’ and press ENTER/MARK. Highlight the
waypoint and press ENTER/MARK. A ‘MOVE’ label will now appear under the cursor arrow in
addition to a distance, bearing, and coordinate window. You may also use the IN and OUT keys to
zoom the map. The map scale will appear in the lower right corner.
Reference
Editing Waypoints
2. Use the ARROW KEYPAD to point to the new position and press ENTER/MARK. If you wish to
stop the move process, press QUIT.
Point Submenus
The GPSMAP 182/182C/232’s Main Menu Page features two waypoint submenu tabs, ‘User’ and
‘Proximity’, that let you manage a large number of waypoints quickly and efficiently. The submenu tabs
also provide a continuously updated proximity waypoint alarm function that can be used to define an
alarm circle around submerged hazards, shallow waters, etc.
To access the Main Menu Page/Waypoint (Points) submenus:
1. Press MENU twice, then highlight the ‘Points’ tab using the ARROW KEYPAD, then highlight
the desired submenu tab.
User Waypoint List
The first waypoint submenu list available from the ‘Points’ tab is the ‘User’ list, which displays
a master list of all waypoints currently stored in memory. From the User list, you may review, edit,
rename or delete individual waypoints, or delete all user waypoints. The total number of stored and
available waypoints is displayed at the bottom of the ‘User’ Page, with the stored waypoints arranged in
numerical/alphabetical order.
Point to a new location
and press ENTER/MARK
to move the waypoint.
The following options are available from the ‘User’ submenu of the ‘Points’ tab:
•
•
•
•
Create Waypoint— allows you to create a waypoint. (See page 30 for creating a waypoint)
Delete Waypoint— deletes selected waypoint from list and any route in which it was used.
Delete By Symbol— deletes waypoints that use the same symbol.
Delete All— deletes all waypoints from the unit.
33
Reference
Waypoint Options

Once a waypoint is deleted from the list, it cannot be recovered from the unit. It is
advisable to backup important waypoints to a computer using an optional PC cable and
interface software or record them down manually.
To display the waypoint menu options:
1. Using the ARROW KEYPAD, highlight the ‘User’ tab and press the MENU key.
To scroll through and review the waypoint list:
Submenu Tabs
1. With the ARROW KEYPAD, highlight the ‘Points’ tab from the main menu Page and then highlight
‘User’.
2. Use the ARROW KEYPAD to scroll through the list in the desired direction.
3. Press ENTER/MARK to review the highlighted waypoint on the ‘Waypoint Edit’ Page.
4. Press ENTER/MARK to return to the list and automatically highlight the next waypoint.
To delete an individual waypoint from the list:
1. Use the ARROW KEYPAD to highlight the waypoint to be deleted and press MENU.
Options
Menu
2. Highlight ‘Delete Waypoint’ and press ENTER/MARK. You may also highlight the waypoint, press
ENTER/MARK, then highlight ‘Delete’ and press ENTER/MARK.
3. Press the ENTER/MARK key to confirm the deletion warning.
To delete waypoints by symbol:
Point List Status
1. From the ‘User’ tab, highlight the waypoint to be deleted and press the MENU key, then select
‘Delete By Symbol’ and press ENTER/MARK.
2. Use the ARROW KEYPAD to highlight the symbol of the waypoint(s) to be deleted and press
ENTER/MARK.
3. Press ENTER/MARK to confirm. You may also choose ‘Cancel’ or press QUIT to stop the deletion.
To delete all waypoints or the entire waypoint list:
34
1. Press the MENU key to select the options window.
2. Use the ARROW KEYPAD to highlight ‘Delete All’ and then press ENTER/MARK.
Reference
3. Highlight the ‘OK’ prompt and press ENTER/MARK to confirm.
Proximity Waypoint List
The second waypoint submenu list available from the ‘Points’ tab is the ‘Proximity’ list, which lets
you define an alarm circle around a stored waypoint position, and can be used to help you avoid reefs,
rocks or restricted waters. Up to ten waypoints may be listed, with a maximum alarm radius of 99.99
nautical or statute miles or kilometers. If a proximity alarm circle overlaps with an existing alarm circle,
a ‘Proximity Overlaps Another Proximity Waypoint’ message will appear. Since the unit will only alert
for one of the overlap points, use caution when navigating in these areas. If you enter an alarm circle
overlap, you will only be alerted to the closest proximity waypoint.
To add a proximity waypoint:
Proximity Waypoint List
Name
Field
Waypoint
List
1. Use the ARROW KEYPAD to highlight an empty space on the Proximity list and press
ENTER/MARK. The ‘Find’ screen appears. Highlight ‘Waypoints’ and press ENTER/MARK.
2. To select a waypoint from the lists, use the ARROW KEYPAD to highlight the desired waypoint
from the ‘User’ or ‘Nearest’ tab lists.
To select a waypoint from the map, highlight either the ‘User’ or ‘Nearest’ tab and press MENU.
With ‘Select From Map’ highlighted, press ENTER/MARK. Use the zoom IN and OUT buttons and
the ARROW KEYPAD to highlight a waypoint.
3. Press ENTER/MARK to confirm. The distance field will now be highlighted.
4. Press ENTER/MARK to begin entry of the proximity radius.
5. Use the ARROW KEYPAD to enter a distance value (to 99.99 units) and press ENTER/MARK.
To turn proximity alarms on or off:
You can also search for a waypoint by name:
1. Highlight the name field and press ENTER/MARK.
2. Use the ARROW KEYPAD to select the first letter of
the name.
3. Move to the RIGHT and enter the second letter if you do
not see it on the list below.
4. Repeat this until the name appears. Press ENTER/MARK
when you see the name.
5. Highlight the name on the list and press ENTER/MARK
again to review the waypoint. When done, highlight ‘OK’
and press ENTER/MARK.
1. Use the ARROW KEYPAD to highlight the field below “Proximity Alarm” and press
ENTER/MARK.
2. Select the desired ‘ON’ or ‘OFF’ setting and press ENTER/MARK.
35
Reference
The following options are available from the ‘Proximity’ submenu of the ‘Points’ tab:
• Delete Alarm— removes selected waypoint from proximity list.
Proximity Waypoint List
• Delete All— removes all waypoints from proximity list.
To display the waypoint menu options:
1. Using the ARROW KEYPAD, highlight the ‘Proximity’ tab and press the MENU key.
To clear one or all proximity waypoint(s) from the list:
1. Use the ARROW KEYPAD to highlight the proximity waypoint to clear and then press the MENU
key.
Proximity Waypoint List
2. To clear a single alarm, highlight the ‘Delete Alarm’ option and press ENTER/MARK.
3. To clear all proximity waypoints, select the ‘Delete All’ option and press ENTER/MARK.
4. Use the ARROW KEYPAD to highlight the ‘OK’ prompt and press ENTER/MARK to confirm.
Icon appears when
proximity alarms triggers.
Proximity Waypoint
Proximity Circle
A dashed circle will
appear showing the alert
boundary for the
proximity waypoints.
36
Going to a Destination
Using the NAV key, the GPSMAP 182/182C/232 provides three ways to navigate to a destination:
Go To Point, Follow Route and Follow Track (TracBack). Once you are actively navigating, you will see
a straight line that always runs from your current location to the destination. The easiest method for
selecting a destination is the ‘Go To’ function, which lets you select a destination point and quickly sets
a direct course from your present position. If you have a point highlighted on a list or the map, ‘Go To
<point name>’ will appear in addition to ‘Go To Point’. The ‘Go To’ function can be accessed from any list
of points or graphically from the map display.
To activate a ‘Go To’ from a point list:
1. Press the NAV key.
2. Use the ARROW KEYPAD to highlight ‘Go To Point’ and press ENTER/MARK.
Reference
Going to a Destination
Choose a waypoint from
either the ‘User’ or ‘Nearest’ tab list.
3. From the ‘Find’ menu, highlight ‘Waypoints’ and press ENTER/MARK. (You may also choose to go to
other points, such as Cities, Tide Stations, etc. from this list.)
4. To select a waypoint from the waypoint lists, use the ARROW KEYPAD to highlight either the ‘User’
or ‘Nearest’ tab, select a waypoint and press ENTER/MARK. To select a waypoint from the map,
highlight either the ‘User’ or ‘Nearest’ tab and press MENU. With ‘Select From Map’ highlighted,
press ENTER/MARK. Use the zoom IN and OUT buttons and the ARROW KEYPAD to select a
waypoint, then press ENTER/MARK.
5. You may also activate a ‘Go To’ for any point, on any list. With any list point highlighted, press the
NAV key. You will see ‘Go To <point name>’ appear, then press ENTER/MARK.
Selecting a ‘Go To’ Graphically
A graphical ‘Go To’ may be used to select one of three items from the map display: an existing
waypoint, an on-screen map item (roads, rivers, cities, navaids, etc.), or a new map point (non-map
item). If you are selecting a map item as the ‘Go To’ destination, the GPSMAP 182/182C/232 will automatically use the name of the map item, but the point will not be stored in the waypoint list. See page
The waypoint or map
item name will automatically appear when
highlighted and NAV is
pressed.
37
Reference
Going to a Destination/
TracBack Navigation
31 for creating waypoints using map items. If you are selecting a new map point (non-map item) as the
‘Go To’ destination, the GPSMAP 182/182C/232 will automatically create or move a waypoint named
‘MAP’ at the cursor position.
To activate an existing waypoint or map item as a ‘Go To’ from the map display:
1. Use the ARROW KEYPAD to highlight the waypoint or map item on screen and press NAV.
2. You will see ‘Go To <waypoint name>’, then press ENTER/MARK. You may also highlight the
waypoint or map item, press ENTER/MARK, highlight ‘Go To’ from options at the bottom of the
window and press ENTER/MARK.
‘Go To MAP Point’ allows
you to navigate to a spot
on the map which is not a
waypoint or map item.
To activate a new map point (non-map item) as a ‘Go To’ from the map display:
1. Use the ARROW KEYPAD to move the arrow cursor to the desired position.
2. Press NAV, you will see ‘Go To MAP Point’ highlighted, then press ENTER/MARK.
TracBack Navigation (Follow Track)
The second method of navigating to a destination is by using the TracBack or Follow Track feature.
The TracBack function allows you to retrace your path using the track log automatically stored in the
receiver’s memory, which will eliminate the need to store waypoints along the way. TracBack routes are
created by reducing your track log into a route of up to 50 turns and activating an inverted route along
those points. Once activated, a TracBack route will lead you back to the oldest stored track log point, so
it’s a good idea to clear the existing track log before you start your current trip.
To clear the track log and define a starting point for a TracBack route:
Highlight ‘Save’ and
press ENTER/MARK to
save an active track log.
1. Press the MENU key twice to display the Main Menu Page.
2. Using the ARROW KEYPAD, highlight the ‘Track’ tab, then highlight the ‘Active’ tab to the right.
3. Use the ARROW KEYPAD to select the ‘Erase’ option and press ENTER/MARK.
4. Highlight the ‘OK’ field and press ENTER/MARK.
38
You must first save the track log before you can use the ‘Follow Track’ feature. The Save feature
allows you to store up to 15 track logs from certain times and dates.
To save a track log:
1. From the Main Menu, use the ARROW KEYPAD to highlight the ‘Track’ tab, then highlight the
‘Active’ tab to the right.
2. Use the ARROW KEYPAD to select the ‘Save’ option and press ENTER/MARK.
3. From the ‘Save Back Through’ window, highlight the desired time, date, or ‘Entire Log’ and press
ENTER/MARK.
4. Next, the track will begin saving and then display the ‘Saved Track’ window when done. The default
name, distance and number of points (500 max) will be displayed.
5. To change the name of the saved track, highlight the name field and press ENTER/MARK, make
your changes and press ENTER/MARK again. You may also choose a style (monochrome units) or
color (color models) that will be used to display the saved track line. If you wish for the saved track
to be displayed on the Map and Highway Page, highlight the check box to the left of ‘Show on Map
and Highway’ and press ENTER/MARK. Highlight ‘OK’ and press ENTER/MARK to save the track.
To activate a TracBack using the NAV key:
1. Press the NAV key, then highlight the ‘Follow Track’ option and press ENTER/MARK.
Reference
TracBack Navigation
Default Track name
Total Distance
Change color or
style of track line
Check this box to
display track
Total number of points
Additional options
2. Highlight the track you wish to follow and press ENTER/MARK.
3. Choose either ‘Original’, which will navigate you from the start to the end of your trip, or ‘Reverse’,
which will navigate you from the end to the start of your trip and press ENTER/MARK.
Once a TracBack has been activated, the GPSMAP 182/182C/232 will take the track log currently
stored in memory and divide it into segments called ‘legs’. Up to 50 (254 on 182C) temporary ‘turns’
(BEGIN, TURN 1, TURN 2, TURN 3,...., TURN X, END) will be created to mark the most significant
features of the track log in order to duplicate your exact path as closely as possible. To get the most out
of the TracBack feature, remember the following tips:
You must first save
a track before using
the ‘Follow Track’
option.
• Always clear the track log at the point that you want to go back to (dock, etc.).
• The ‘Record Mode’ option on the track log setup page must be set to ‘Fill’ or ‘Wrap’.
• There must be at least two track log points stored in memory to create a TracBack route.
39
Reference
• If the track log interval is set to the ‘Time’ option, the route may not follow your exact path (keep
the interval set to ‘resolution’ for best performance).
TracBack Navigation/
MOB: Man OverBoard
• If the receiver is turned off or satellite coverage is lost during your trip, the TracBack will draw a
straight line between any point where coverage was lost and where it resumed.
• If your track log’s changes in distance and direction are too complex, 50 waypoints may not mark
your path accurately. The receiver then assigns the 50 waypoints to the most significant points of
your track, and simplifies segments with fewer changes in direction.
The MOB function
allows you to quickly
activate a navigation
back to a location.
To stop TracBack navigation:
1. Press the NAV key, highlight ‘Stop Navigation’ and press ENTER/MARK.
For more information on setting up the Track options and saved tracks, see pages 59-60.
MOB
The GPSMAP 182/182C/232’s Man OverBoard function (MOB) lets you simultaneously mark and
set a course to a position for quick response to emergency situations.
To activate the MOB function:
1. Press the MOB key.
2. Press the ENTER/MARK key to confirm and begin navigating to the MOB position.
Highlight ‘Yes’ and
press ENTER/MARK
to stop navigation.
Once a MOB has been activated, a ‘MOB’ waypoint with an international MOB symbol will be
created and the unit will be on an active navigation to that point. Use any of the Navigation Pages to
guide you back to the MOB point. The MOB waypoint will be stored in the waypoint list and may
be deleted like any other waypoint.
To stop navigation to the MOB position:
1. Press the NAV key, highlight ‘Stop Navigation’ and press ENTER/MARK.
40
Routes
The last way to navigate to a destination is to create a user-defined route. The Garmin GPSMAP
182/182C/232 system lets you create and store up to 50 reversible routes (numbered 1-50), with up to
50 (254 on 182C) waypoints each. Routes can be created and modified in two ways. The first way to
the ‘Edit on Map’ from the Route Edit map Page, allowing you to see each route graphically on-screen
as you create, review, or modify the route. The second way is to ‘Edit as Text’ from the Route Review
Page, allowing you to see a list of the waypoints as you create, review, or modify the route. All of the
GPSMAP 182/182C/232’s route functions are accessed through the Main Menu Page or the NAV key.
To create a route graphically from the Route Edit Map Page:
1. Press the MENU key twice to display the Main Menu Page.
Reference
Creating Routes
Route Tab and Route
Options Menu
2. Use the ARROW KEYPAD to highlight the ‘Route’ tab and press the MENU key to display
the route options page or you may also highlight the first available blank route slot and press
ENTER/MARK. (Skip to step 4 if you use this method.)
3. Select the ‘New Route’ option and press ENTER/MARK.
4. To add an existing waypoint or map item to the route, use the map cursor to highlight the desired
waypoint or map item on screen and press ENTER/MARK. Map items will not appear in the
waypoint list. To create a waypoint from a map item, see page 31.
5. To add a new waypoint to the route, use the map cursor to select the desired map position and
press ENTER/MARK. Press ENTER/MARK again to confirm the new waypoint. You may also
change the name and symbol of the new waypoint (see page 32).
As you add each new waypoint to the route, the data window at the top of the map display will
show the waypoint/map item name, bearing and distance from your location, and coordinates of the
cursor. The bottom of the display will show you the number of available and used points. A route line
will appear on the map to indicate each completed leg, and a dotted line will appear to indicate the
distance and bearing to the arrow cursor from the last route waypoint.
You will see ‘ADD’
below the cursor as you
add points.
6. Repeat steps 4 and 5 until you have finished defining all route waypoints.
7. When finished press QUIT twice to return to the Route List Page or press MENU, highlight ‘Edit as
Text’ and press ENTER/MARK to return to the Route Review Page.
41
Reference
Creating Routes
To create a route using text from the Route Review Page:
1. Press the MENU key twice to display the Main Menu Page.
2. Use the ARROW KEYPAD to highlight the ‘Route’ tab and press the MENU key to display
the route options page or you may also highlight the first available blank route slot and press
ENTER/MARK. (Skip to step 4 if you use this method.)
3. Select the ‘New Route’ option and press ENTER/MARK.
4. Press MENU, select ‘Edit as text’ and press ENTER/MARK.
Choose the category you
want to add a route
point from.
5. Use the ARROW KEYPAD to highlight the first field under the word “Waypoint” and press
ENTER/MARK.
6. From the ‘Find’ menu, highlight ‘Waypoints’ and press ENTER/MARK. (You may also choose from
other points, such as Cities, Tide Stations, etc. from this list.) From either the “By Name” or
“Nearest” tab lists, choose the waypoint you want and press ENTER/MARK. (See page 35 for
searching for waypoints by name.)
7. From the Waypoint Review Page, ‘OK’ will be automatically highlighted. You may use the ‘Show
Map’ option to view the point on the map, then press QUIT when done viewing to return to the
Waypoint Review Page. Press ENTER/MARK to add the point to the route. The next field down on
the list will automatically highlight.
Choose a waypoint from
either the ‘By Name’ or
‘Nearest’ tab list.
42
8. Keep using the methods on steps 5-7 until the desired route points have been entered. Press QUIT
to return to the Route List Page.
Route List Page
The GPSMAP 182/182C/232 Route List Page displays all the routes currently stored in memory,
along with a descriptive name for each route. Once a route has been created, it can be activated
and used for navigation with the NAV key. A route may be followed in the same sequence as it was
originally created, or you can invert the route and navigate from the end waypoint back to the beginning waypoint. From the Route list menu, you may choose ‘New Route’ (pg 41), ‘Copy Route’, ‘Delete
Route’, or ‘Delete All’.
To activate a route with the NAV key:
1. From any page, press the NAV key, then using the ARROW KEYPAD, highlight ‘Follow Route’ and
press ENTER/MARK. (If you highlight a route from the Route List or Route Review Page and press
NAV, the window will automatically display, ‘Follow <the route name>’.)
Reference
Route List Page
If you highlight a route
name from the Route List
and press NAV, the name
will automatically appear.
2. Highlight the route you wish to navigate and press ENTER/MARK.
3. Choose ‘Activate’ or ‘Invert and Activate’ and press ENTER/MARK. (‘Activate’ will use the route as
is, ‘Invert and Activate’ will reverse the route then activate it.)
To deactivate (stop navigation) of a route:
1. Press the NAV key, highlight ‘Stop Navigation’ and press ENTER/MARK.
To copy or delete a route:
1. From the Route List, using the ARROW KEYPAD, highlight the route you want to copy or delete
and press MENU.
2. Choose either ‘Copy Route’ or ‘Delete Route’ and press ENTER/MARK and with “OK” highlighted,
press ENTER/MARK again to confirm a deletion. Copy will use the same route name with an
additional number, starting at 1, at the end of the route name.
Route List Menu
To delete all routes:
1. From the Route List, press MENU.
2. Highlight ‘Delete All’ and press ENTER/MARK and with “OK” highlighted, press ENTER/MARK
again to confirm the deletion.
43
Reference
Route Review Page
Route Review Page
Once you have created a route, the Route Review Page allows you to review and modify the route
displayed.
To get to the Route Review Page:
Route Name
Data Fields
1. Press MENU twice, highlight the ‘Route’ tab.
2. Highlight the name of the route you wish to review and press ENTER/MARK.
The Route Review Page also allows you to enter your own 15-character name for any listed route.
By default the name includes the first and last waypoints in the route.
To enter a custom route name:
Route Points
1. From the Route Review Page, highlight the name field and press ENTER/MARK to begin editing.
2. Use the ARROW KEYPAD to enter the desired name and press ENTER/MARK when finished.
Data Totals
Once you are on the Route Review Page, you may review the route points (waypoints or map
items) one at a time from the list.
To review individual route points:
1. Highlight the desired point and press ENTER/MARK.
2. On the waypoint review window, you may choose ‘Next’ (highlight the next point on the route list),
‘Show Map’ (show the point on a map window) or ‘Delete’ (permanently delete the waypoint from
the unit) and press ENTER/MARK.
Route Review
Options Menu
44
Once you are back on the route point list, the next point in the route will automatically be
highlighted. This allows you to review each point on the route by pressing only ENTER/MARK
repeatedly.
Route Review Menu Options
Menu options available from the Route Review Page are Edit on Map, Add Before, Remove and Trip
Planning.
Edit on Map— this option allows you to review and modify the route displayed for each point
(waypoint or map item) on a map page. You may also use the cursor to insert a new route point on a
route leg, review the waypoint or map item.
Reference
Editing Routes
To edit the route on the map:
1. From the Route Review Page, press MENU, highlight ‘Edit on Map’ and press ENTER/MARK.
To edit a route point:
1. Use the ARROW KEYPAD to highlight the desired route waypoint and press MENU.
To review a route point:
Highlight a point and
press ENTER/MARK
to review it.
1. Highlight the point and press ENTER/MARK. Press ENTER/MARK again when done.
A pop-up menu of editing choices will appear, with options for removing, moving (user waypoints
only) or adding turns to the beginning or end of the route.
To remove a route waypoint:
1. Highlight the ‘Remove’ option and press ENTER/MARK.
To move a route waypoint:
1. Highlight the ‘Move’ option and press ENTER/MARK.
2. Move the cursor to the new map position and press ENTER/MARK.
To add turns at the beginning or end of the route:
1. Select the first (to add waypoints to the beginning of the route) or last (to add waypoints to the end
of the route) route waypoint with the map cursor, and press MENU.
2. Highlight the ‘Add’ option and press ENTER/MARK.
3. Move the cursor to the new point or position and press ENTER/MARK.
4. If you are not inserting an existing waypoint, press ENTER/MARK to confirm the new waypoint.
5. Repeat steps 3 and 4 to insert additional waypoints, or press QUIT to finish.
Choose ‘Next’ to center
the map on the next point
in the route. You can
step through the points
by repeatedly pressing
ENTER/MARK.
45
Reference
Editing Routes
The GPSMAP 182/182C/232’s route edit mode also allows you to insert a new route waypoint in
any route leg using the map cursor.
To insert a new waypoint between two existing route waypoints:
1. Use the ARROW KEYPAD to select the leg you want to insert the new waypoint in (the route line
will highlight and change to a dotted line when the leg is selected) and press ENTER/MARK.
2. Move the cursor to the new map position, existing waypoint, or map item (You will see ’ADD’ below
the arrow and the route lines will move with the arrow) and press ENTER/MARK.
3. If you are not inserting an existing point, press ENTER/MARK to confirm the new waypoint.
Highlight the route leg
on which you wish to
insert a waypoint and
press ENTER/MARK.
Add Before— Allow you to insert a waypoint into the list of route points or add a point(s) onto
the end of the route.
To insert a point into the route or add a point to the end:
1. From either the Route Review or Active Route Pages, use the ARROW KEYPAD to highlight the
point you wish to insert the new point before (To add a point to the end, highlight the blank field at
the bottom of the list) and press MENU.
2. Highlight ‘Add Before’ and press ENTER/MARK.
3. From the ‘Find’ menu, highlight ‘Waypoints’ and press ENTER/MARK. (You may also choose from
other points, such as Cities, Tide Stations, etc. from this list.) From either the “User” or “Nearest
From Current Location” tab lists, choose the waypoint you want and press ENTER/MARK twice.
(See page 35 for searching for waypoints by name.)
Drag the route leg to
an existing waypoint
(shown), map item, or
a blank spot on the
map to create a new
route point.
46
To select a waypoint from the map, highlight the ‘User’ or ‘Nearest’ tab and press MENU. With
‘Select From Map’ highlighted, press ENTER/MARK. Use the zoom IN and OUT buttons and the
ARROW KEYPAD to highlight a waypoint on the map and press ENTER/MARK.
Remove— Allows you to remove a point (waypoint or map item) from a route. This option is available
from both the Route Review and Active Route Pages.
To remove a point from a route:
1. From either the Route Review or Active Route Pages, use the ARROW KEYPAD to highlight the
point to remove and press MENU.
2. Highlight ‘Remove’ and press ENTER/MARK.
Trip Planning— The Route Review and Active Route Pages also display trip-planning information for
each leg or the entire route. Available information includes Course, ETA, Fuel (to point), Leg Distance,
Leg Fuel, Leg Time, Sunrise and Sunset (at point location), and Time To (point).
To use the Trip Planning feature:
Reference
Editing Routes
1. To select the desired planning figure, highlight the desired route from the Route List and press
ENTER/MARK to display the Route Review Page.
2. One of nine available planning figures appears to the right of each route waypoint and its distance.
Use the LEFT/RIGHT keys on the ARROW KEYPAD to select the desired item.
3. To enter planning information, from the Route Review Page only, press MENU and select ‘Trip Planning’ from the options list. Enter the figures for Speed, Fuel Flow, Departure Time, and Departure
Date. Press QUIT to return to the Route Plan Page.

Press LEFT or RIGHT on
the ARROW KEYPAD to
change the data field.
Fuel flow rates on your unit are measured in “units per hour”. System setting changes
for units of measure (statute, nautical or metric) do not affect the fuel flow measure.
You should enter fuel flow rates based upon available information for your vehicle
(operator’s manual, performance specifications, etc.) and make note of the desired units
of measure (gallons, liters, etc.).
Delete Route— deletes a route from the Route List. Waypoints and map items will not be deleted
from unit memory.
To delete a route:
1. From the Route Review Page press MENU.
2. Highlight ‘Delete Route’ and press ENTER/MARK and ENTER/MARK again to confirm the deletion.
Trip Planning
Data Fields
47
Reference
Active Route Page
Active Route Page
Active Route Page
Whenever you have activated a route in the GPSMAP 182/182C/232 system, the Active Route Page
shows each point (waypoint or map item) of the active route, with the point name, distance and choice
of Course, ETA, Fuel to point, Leg Distance, Leg Fuel, Leg Time, Sunrise and Sunset at point location,
or Time To point for each point from your present position. The current destination point, the ‘active’
point, is marked with an arrow icon. As you navigate a route, the waypoint list will automatically
update to indicate the next ‘active’ point first. The Active Route and Route Review Pages share many of
the same features and options.
The following route options are available from the Active Route Page:
• Hide/Show Numbers— see page 21 for instructions (same as Map Page option).
• Change Numbers— see page 22-23 for instructions.
• Edit on Map— see page 45 for instructions.
• Add Before— see pages 45-46 for instructions.
• Remove— see pages 45-46 for instructions.
• Invert— reverses the direction of the route.
• Re-evaluate— recalculates and reactivates the current route data.
Invert— reverses the route.
To Invert an active route:
1 From the Active Route Page, press MENU.
Active Route Page
Menu Options
2. Using the ARROW KEYPAD, highlight ‘Invert’ and press ENTER/MARK to reverse the route.
Re-evaluate— reactivates the current route and selects the route leg closest to your current position as
the active leg. The active leg defines the current ‘from’ and ‘to’ waypoints.
To Re-evaluate an active route:
48
1 From the Active Route Page, press MENU.
2. Using the ARROW KEYPAD, highlight ‘Re-evaluate’ and press ENTER/MARK to recalculate.
Find Function
The FIND key allows you to search the units for user waypoints, map items and any optional
BlueChart or MapSource information loaded on a data card. By pressing the FIND key, the unit will
search for items from your current location by default or you may also search from other locations.
When you press FIND, a list of available items to search from will appear. The default items are
Waypoints, Cities, Tide Stations, and Transportation. Additional items, such as Anchorages, Businesses,
Exits, Navaids, Restricted Areas, Wrecks Obstructions, etc., will display depending on the optional
BlueChart or MapSource data card inserted into the unit. If you pan around on the Map Page and press
FIND, the unit will center its search from the point where the cursor is located. When using BlueChart
or MapSource data, your position or the map pointer must be within the map outline area to search for
information from that area.
Reference
Find Key
Find Items List
To Find a waypoint or other item from your current location:
1 From any page, press FIND.
2. Using the ARROW KEYPAD, highlight the desired category from the list and press ENTER/MARK.
3. For Waypoints and Cities, you may search using ‘By Name’ or’ Nearest’. Use the ARROW KEYPAD
to highlight the desired tab. For ‘By Name’, you may use the top field to spell out the name or scroll
down through the list. (See also page 35 sidebar for steps on entering a name.)
To Find a waypoint or item from other locations:
1 From the Map Page, use the ARROW KEYPAD to pan to the desired location and press FIND.
2. Using the ARROW KEYPAD, highlight the desired category from the list and press ENTER/MARK.
The Find option supports a “find from” feature which allows you to center your search around an
item which you have just found using the Find function. For example, you search for “Restricted Areas”
and the search shows an “Anchoring Prohibited” search result. If you press FIND again, you will see
“From Anchoring Prohibited” as the new search from point. You may also use the Find feature to center
your search from any waypoint or route list entry, map item or tide station. Highlight the item you want
to Find ‘from’, and press the FIND key.
You may also Find from
items found on the Find
List.
49
Reference
Find Options
Find Options
Using the Find options, you may search from various map data and utilize variety of nearest criteria
for all items, except waypoints. Available Find options are:
• Nearest To Boat— centers search from your boat’s current location.
• Nearest To Other— allows you to choose another map location from which to search.
• Nearest To Next— centers search from the next point of your active route.
• Nearest To Destination— centers search from the last point of your active route.
To Find an item using the Find options:
Find Menu Options
1 From any page, press FIND.
2. Using the ARROW KEYPAD, highlight the desired category from the list and press ENTER/MARK.
3 From the search results list, press MENU, then highlight the desired option and press
ENTER/MARK.
Additional Information
Any item you locate using the Find feature will also have additional information, such as item
classification, distance, bearing and coordinates, data source, etc., depending on the type of data on the
optional BlueChart or MapSource data card. Tabs will appear at the top of the detail window, along with
additional option buttons at the bottom.
Additional Information
Tabs
To view additional information for a Find item:
1 From the Find list, highlight an item and press ENTER/MARK.
Distance, Bearing,
Coordinates of item
2 Use the ARROW KEYPAD to highlight the individual tabs to display the information and additional
options. Scroll up, down, left and right in additional text windows (show notes), highlight the field
and press ENTER/MARK, the use the ARROW KEYPAD to scroll, or press MENU and choose
the desired scroll option.
Additional Option
Buttons
50
Additional Information Window
Main Menu Page
The GPSMAP 182/182C/232’s Main Menu Page provides access to various waypoint, system, navigation and interface management, and setup menus in an easy to use “tab” format. The Main Menu Page
is available from any Page in the system, and is accessed through the MENU key. See pages 2-3 for
additional instructions changing settings and entering data.
To access the Main Menu Page:
1. Press MENU twice. The 18 Menu tabs are divided into categories by function.
To select a Menu tab from the Main Menu Page:
1. Move the ARROW KEYPAD UP or DOWN to highlight the tab you want to view. The information for
the highlighted tab will automatically appear to the right. If you want to highlight any of the tab items,
press to the RIGHT on the ARROW KEYPAD, then move UP or DOWN to select individual items.
2. Press either MENU for additional submenu options or press ENTER/MARK to make changes to the
highlighted item. Press LEFT on the ARROW KEYPAD to get back to the Menu tab list. Press QUIT to
return to the Main Menu Page.
Reference
Main Menu Tabs
Submenu Tabs
Main Menu
Tabs
The Main Menu tabs are:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
GPS— shows satellite status, accuracy, initialize position.
Tide— shows 24 hour tide chart with levels and times.
Trip— provides trip speeds, odometers, averages, and trip timers.
Celes— shows sun/moon time cycles and positions.
Points— allows you to create, edit, or delete waypoints. See pages 30-36.
Route— allows you to create, edit, activate or delete routes. See pages 41-47.
Track— lets you record a track, define how it is recorded and displayed.
DSC— allows you to control the Digital Selective Calling (DSC) interface.
Time— sets up time format, time zones, and daylight savings.
Pages— enables main pages to be shut off, turned on, or ‘jumped to’.
Map— sets up Map Page features, zooms, and text size. See pages 24-26.
Hiway— sets up Highway Page features. See pages 28-29.
Temp*— displays teperature log graph (if equipped with GSD 20 or NMEA compatible device).
Sonar*— sets up sonar options (if equipped with GSD 20).
Systm— defines beeper and simulator, restores setup, and displays software version.
Units— defines position format, datum, heading, and distance and speed units.
Comm— interface settings for use with a PC or second device.
Alarm— sets up alarms for anchor drag, arrival, off course, and clock.
Main Menu Page
* See the “GSD 20 Sounder Module with Garmin
Chartplotters” (190-00241-03) for operational
instructions.
51
GPS Tab— provides a visual reference of satellite acquisition, receiver status, and accuracy. The
status information will give you an idea of what the receiver is doing at any given moment. The sky
view and signal strength bars give you an indication of what satellites are visible to the receiver and
whether or not they are being tracked. The signal strength is shown on a bar graph for each satellite,
with the satellite number below. As the receiver locks onto satellites, a signal strength bar will appear
for each satellite in view. The progress of satellite acquisition is shown in three stages:
Reference
Main Menu:
GPS Tab
Receiver Status
Accuracy
DOP
Differential
Status
Sky View
Signal Strength
Bars
90°
Center dot - 90°
above the horizon
Inner ring- 45°
above the horizon
Outer ring the horizon
45°
52
• No signal strength bars— the receiver is looking for the satellites indicated.
• Light signal strength bars— the receiver has found the satellite(s) and is collecting data.
• Dark signal strength bars— the receiver has collected the necessary data and the satellite(s) are ready
for use.
As soon as the GPSMAP 182/182C/232 has collected the necessary data from the best satellites in
view to calculate a fix, the status field will indicate a 2D or 3D status. The unit will then update the
position, date, and time.
You can use the sky view to help determine if any satellites are being blocked, and whether you
have a current position fix (indicated by a ‘2D’,‘2D Differential’,‘3D’, or ‘3D Differential’ in the status
field). The sky view shows a bird’s-eye view of the position of each satellite relative to the receiver’s
last known position. The outer circle represents the horizon (north up), the inner circle 45º above the
horizon, and the center point a position directly overhead. You can also set the sky view to a ‘Track Up’
configuration, causing the top of the sky view to align along your current track heading.
WAAS Capability
The GPSMAP 182/182C/232 is capable of receiving WAAS (Wide Area Augmentation System) satellite signals. WAAS is an FAA (Federal Aviation Administration) funded project to improve the overall
accuracy and integrity of the GPS signal for aviation use, but land/sea based users may also benefit
from this system. At this time, the system is still in the development stage and is not fully operational.
There are currently two WAAS satellites that can be received in the U.S.A., one over the Atlantic Ocean
and one over the Pacific Ocean, in a geo-stationary orbit over the equator. Effective use of the WAAS
satellite signal may be limited by your geographic location in relation to those satellites, now in developmental service. WAAS satellite signal reception requires an absolute clear view of the sky and works
best when there are no nearby obstructions such as buildings, mountains, etc. WAAS satellites will be
numbered 33 or higher when viewing the sky view on your GPSMAP 182/182C/232. Initial reception
of the WAAS signal may take up to 15-20 minutes, then 1-2 minutes afterwards. When WAAS differential correction has been received for GPS satellites (numbers 32 or below), a ‘D’ will appear in the signal
bar of the sky view and ‘2D or 3D Differential’ will appear in the receiver status. To learn more about
the WAAS system, its satellite positions and current state of development, visit the FAA web site
(http://gps.faa.gov). Since WAAS requires CPU resources of the GPSMAP 182/182C/232 to search for
and track the satellites, you may disable the WAAS feature to improve unit performance if WAAS
reception is not available in your area.
Reference
Main Menu:
GPS Tab
To Disable/Enable WAAS capability:
1. From the GPS Tab, press MENU, then use the ARROW KEYPAD to highlight ‘WAAS Off’ or ‘WAAS
On’ and press ENTER/MARK.
Receiver Status, Accuracy and DOP
Receiver status is indicated at the top field of the page, with the current Accuracy and Dilution Of
Precision (DOP) to the right of the sky view. DOP is an indication of satellite geometry quality measured
on a scale of one to ten (lowest numbers the best, highest numbers the poorest). Accuracy uses DOP
and other factors to calculate horizontal position accuracy in feet or meters. The status field will show
one of the following conditions:
• Looking For Satellites— the receiver is looking for any satellites.
• AutoLocate— the receiver is looking for any satellite whose almanac has been collected. This
process can take up to five minutes.
• Acquiring Satellites— the receiver is looking for and collecting data from satellites visible at its last
known or initialized position, but has not collected enough data to calculate a fix.
• 2D— at least three satellites with good geometry have been acquired and a 2 dimensional position
fix (latitude and longitude) is being calculated. ‘2D Differential’ will appear when you are receiving
DGPS corrections in 2D mode and a ‘D’ will show on the strength bar of satellites being corrected.
Highlight ‘WAAS Off’ and
press ENTER/MARK to
disable the WAAS
capabilities.
53
Reference
Main Menu:
GPS Tab
• 3D— at least four satellites with good geometry have been acquired and your position is now
being calculated in latitude, longitude and elevation. ‘3D Differential’ will appear when you are
receiving DGPS corrections in 3D mode and a ‘D’ will show on the strength bar of satellites being
corrected.
• Poor GPS Coverage— the receiver is no longer tracking enough satellites for a 2D or 3D fix.
• Receiver Not Usable— the receiver is unusable, possibly due to interference or abnormal satellite
conditions. Turn the unit off and back on to reset.
• Simulating— the receiver is in simulator mode.
The Differential Receiver status will show one of the following:
• Off— No optional beacon receiver attached or enabled in the Comm menu or WAAS Off.
• Searching For WAAS— WAAS is enabled and receiver is searching for WAAS signal
• Using WAAS— WAAS capability enabled and unit receiving WAAS corrections.
• No Beacon Signal— DGPS receiver attached, but not transmitting RTCM data to GPS.
• Tuning Beacon— Receiver is tuning manual DGPS frequency.
• Receiving Beacon— Unit is receiving DGPS corrections.
• Scanning Beacon— DGPS receiver is scanning for available frequency.
The Differential SNR (Signal to Noise Ratio) indicates, on a scale to 0-30db with 30db being
the best, the strength of the DGPS signal being received. If no optional DGPS receiver is used with
the GPSMAP 182/182C/232, the ‘DGPS Rcvr’ field will display ‘Off’. The SNR will depend upon the
mounting of your DGPS receiver and the distance from the DGPS transmitting station.
The GPSMAP 182/182C/232’s GPS Tab features an options page that provides access to functions
and features relating to the GPS Info display.
To display the GPS Tab options:
54
1. Press MENU.
To select a menu option:
1. Using the ARROW KEYPAD, highlight the desired option and press ENTER/MARK.
The following options are available:
• Start/Stop Simulator— toggles the unit simulator on or off. Retail Demo mode will restore factory
settings to the unit if left unattended for over 2 minutes. This mode should only be used for display
purposes. User waypoints will NOT be deleted.
Reference
Main Menu:
GPS Tab
• WAAS On/WAAS Off— toggles the WAAS capability of the receiver on or off.
• Track Up/North Up— allows you to select between a north up or track up sky view display for
the GPS Info display only.
• AutoLocate— allows the receiver to locate your position automatically. This process can take up
to five minutes.
• Initialize Position— allows you to initialize the receiver graphically on the Map Page to initially help
the receiver acquire more quickly. See pages 4-5 for instructions on initialization.
• Set 2D Elevation— allows you to manually enter the elevation when in 2D or Simulator mode only.
Any elevation entered will be automatically calculated when the GPS is in 3D mode.

Note: If a DGPS receiver is attached to the unit and Garmin DGPS, RTCM In/NMEA Out,
or Other DGPS is enable on Port 2, WAAS will be automatically disabled (WAAS Off). It
is not possible for the GPSMAP 182/182C/232 to receive WAAS and DGPS corrections
at the same time.
GPS Tab Options
55
Reference
Main Menu:
Tide Tab
Station
Name
Date
Tide
Chart
Event
Times
Tide Tab
Tide Tab— shows a graphical chart which displays tide station information in a 24 hour span starting at
midnight station time. You can choose from different dates and over 3000 tide stations around the USA
coastline, Alaska, Hawaii, western Canada, and several of the Caribbean islands.
The top of the page displays the tide station being referenced, below that the date. The top of the
chart shows a 24-hour block of local time (LCL) for your position, with the reported station time (STA)
appearing at the bottom. Daylight (light bar or yellow on 182C) and nighttime (dark bar or blue on
182C) show across the time scale, with the time progressing from left to right. (Local time scales and
sunrise/sunset info may not be available for a few stations). The solid, light vertical lines are in 4-hour
increments, and the light, dotted vertical lines are in 1-hour increments. A solid, vertical line (with the
current time box at the top) will indicate the time of day when using current date and will intersect the
tide graph to show their relation.
Local Time
Max. Level
High Tide Curve
Low Tide Curve
Min. Level
Station Time
You can select from a list
of nearest stations.
56
Day
Current Time Bar
Current Tide Height Bar
MLLW
Night
The tide curve shows as a shaded area, with higher tides being taller (blue on 182C) and lower tides
shorter (red on 182C). The solid, horizontal line (with the current tide box on the left) indicates the current tide height. The figure to the left of the line will show the current tide level in feet. The Mean Lower
Low Water (MLLW) appears as a solid, horizontal line near the bottom of the chart (This line will only
appear if the tide ranges to the zero value or below). The numbers directly below/above ‘LCL’ and ‘STA’
indicate the maximum/minimum levels, respectively. The four data fields below the chart, indicate event
times and levels at which the tide changes starting in the upper left field, going downward, then to the
upper right and down again.
To select the nearest tide station from you current location:
1. From the “Tide” tab, highlight the ‘At’ field and press ENTER/MARK.
2. Highlight the desired station of the list and press ENTER/MARK twice.
If you are not within this range, you will see a message “None Found”. Use the ‘Nearest To Other’
Find option and select a location closer to a tide station.
To select a tide station from the map:
1. Press FIND, then MENU when the search results appear.
2. Highlight ‘Nearest To Other’ and press ENTER/MARK.
3. Select a position on the map and press ENTER/MARK.
4. A list will appear showing up to nine of the nearest tide stations. Highlight the desired station
and press ENTER/MARK twice If the “None Found” message appears, repeat steps 1-4 until you
find a station.
Reference
Main Menu:
Tide Tab
You may automatically
search for the nearest
station using a variety
of search locations. You
must select a location
within 100 nm. of a tide
station.
You may also change the date to see tide charts for other days.
To change the date for the tide chart:
1. Using the ARROW KEYPAD, highlight the “On” field and press ENTER/MARK.
2. Enter the desired date and press ENTER/MARK.
To use the current date:
1. Press MENU, then highlight ‘Use Today’s Date’ and press ENTER/MARK.
You may move the time bar on the tide chart in 5 minute increments to show tide heights at
various times on the chart.
To see tide heights at various times on the chart:
You may move the
cursor to see tide
heights at different
times. Tide data will
show in a black box
when in cursor mode.
1. Press MENU, then highlight ‘Move Cursor’ and press ENTER/MARK.
2. Press LEFT or RIGHT on the ARROW KEYPAD to change the time. Press QUIT when done or press
MENU, then highlight ‘Stop Moving Cursor’ and press ENTER/MARK.
57
Reference
Main Menu: Trip/
Celes (Celestial) Tab
Position
Date/Time
Skyview
Window
Moon Position
Sun/Moon
Event Times
Moon
Phase
Sun Position
Overhead (90°) 70° 45° Horizon (0°)
Trip Tab— displays Trip Odometer, Moving Average speed, Total Average speed, Maximum Speed,
Stopped Time, Moving Time, Total Time, and Odometer. You may reset the data by choosing from
‘Reset Trip’, ‘Reset Odometer’, ‘Reset Max Speed’, or ‘Reset All’ and pressing ENTER/MARK.
Celes (Celestial) Tab— displays celestial data for sun and moon rise/set, moon phase, and approximate skyview location of the sun and moon. The moon phase will display the current visible portion of
the moon as a light color. You may display this data for your current position, a position from the map,
or a Find item location. Also, you may select a different date and time, or use the current data.
To choose a position:
1. From the Celes tab, highlight the ‘At’ field and press ENTER/MARK.
2. From the Find list highlight any category, except Other Location, and press ENTER/MARK. If you
wish to reference a Find item, select from the Find list, and press ENTER/MARK.
3. Select an item from the desired list or tab lists and press ENTER/MARK. For a location from the
map, choose ‘Other Location’ and press ENTER/MARK, select a position on the map and press
ENTER/MARK.
4. From the Find item detail page, highlight ‘OK’ and press ENTER/MARK.
The location the unit is using will appear in the Date/Time/Position field. The timetables displayed
will be based upon your current time zone. When using a position from another location outside of
your time zone, you will need to set the Time Zone for that location under the “Time” tab on the
Main Menu (see page 61).
You may also
change the skyview from ‘North
Up’ to ‘Track Up’.
To change the time or date:
1. From the Celes tab, use the ARROW KEYPAD to highlight the date or time and press
ENTER/MARK.
2. Enter a new date or time and press ENTER/MARK.
To use current date and time:
58
Celestial Tab Menu
1. From the Celes tab, press MENU, then use the ARROW KEYPAD to highlight ‘Use Current Date
and Time’ and press ENTER/MARK.
Track Tab— lets you specify whether or not to record a track log (an electronic ‘breadcrumb trail’
recording of your path), define how it is recorded, or save track log data for future use. The Track
Logs Page also provides an indicator of the memory used for the active track log and options to clear
the track memory or start a TracBack route. See pages 38-40 for TracBack information. The Track
submenu is divided in two tabs: ‘Active’ tab and the ‘Saved’ tab.
Reference
Main Menu:
Track Tab
The ‘Active’ tab is for the active log (the log currently being recorded). It displays track memory
used and current settings.
The ‘Saved’ tab displays and manages a list of any saved track logs, allows TracBack activation,
map display of saved logs. The active log stores up to approximately 2500 track log points, based upon
the criteria specified in the Track settings. Up to 15 track logs may be saved in memory, with up to 500
track log points in each saved log.
Active Track Tab
For the ‘Active’ tab, the following settings are available:
• Record Mode— lets you select one of three track recording options:
Off— No track log will be recorded. Note that selecting the ‘Off’ setting will prevent you from
using the TracBack feature.
Fill— a track log will be recorded until the track memory is full.
Wrap— A track log will be continuously recorded, wrapping through the available memory
(replacing the oldest track data with new data).
• Interval— defines the frequency at which the track plot is recorded. Three interval settings are
available:
Saved Track Tab
Distance— records track based on a user-defined distance between points.
Time— records track plot based on a user-defined time interval.
59
Reference
Main Menu:
Track Tab
Resolution— records track plot based upon a user-defined variance from your course over
ground. The resolution option is the default setting and is recommended for the most
efficient use of memory and TracBack performance. The distance value (entered in the value
field) is the maximum error allowed from the true course before recording a track point.
• Value— defines the distance or time used to record the track log.
• Save— allows you to save the current active track log.
You can use the ‘Review
On Map’ option to display a saved track on a
Track Map Page.
• Erase— allows you to clear the active track log currently stored in memory.
For the ‘Saved’ tab, the following menu options are available:
• Review On Map— displays the saved track log on a Track Map Page.
• Delete Track— deletes highlighted saved track log from memory.
• Delete All— deletes all saved track logs from memory.
You may also activate a TracBack from any of the saved tracks on this tab.
To activate a TracBack from the ‘Saved’ tab list:
1. Using the ARROW KEYPAD, highlight the track you wish to use for a TracBack and press
NAV.
The track name will
automatically appear
when highlighted on the
‘Saved’ list and NAV is
pressed.
60
2. The ‘Follow <track name>’ will automatically appear highlighted. Press ENTER/MARK.
3. Choose either ‘Original’, which will navigate you from the end to the start of your trip, or ‘Reverse’,
which will navigate you from the start to the end of your trip and press ENTER/MARK.
DSC Tab— Digital Selective Calling (DSC) uses marine VHF radio and Global Positioning System
(GPS) technologies to transmit and receive location information. DSC is used by mariners to assist
them in two major areas: Distress Calls and Position Reporting. See Appendix B for more information
on DSC and using it with your GPSMAP 182/182C/232.
Time Tab— displays the current time and date, allows you to adjust the 12 or 24 hour time format,
enter a time zone and adjust for daylight savings to show correct local time.
The following options are available:
• Time Format— choose from 12 or 24 hour (military) time format.
• Time Zone- choose your correct time zone to show correct local time or enter a UTC Offset. The
UTC (also called Greenwich Time) offset is how many hours you are ahead or behind the time line.
See the table on page 70 for time offsets.
• Daylight Savings— choose from ‘Auto’, ‘On’, or ‘Off’ to adjust for daylight savings.
Pages Tab— allows you to turn on/off any of the main pages or ‘Jump To’ a particular page. You may
also set which page appears first when you power the unit on or enable/disable the GPS Info on power
up screen.
To select/deselect a main page:
Reference
Main Menu:
Time and Pages Tabs
Selectable
Data
Fields
Non-Selectable
Data Field
1. Use the ARROW KEYPAD to highlight the box to the left of the page name. Pressing ENTER/
MARK will select/deselect that page. When a page is selected a ‘ ’ will appear in the box. You
must leave at least one page checked.
You may also press Menu and choose from one of the following and press ENTER/MARK:
Time Tab
• All Pages— selects all pages.
• Chartplotter Only— selects Map Page only.
• Nav Tools Only— selects Compass, Numbers, Highway, and Active Route Pages only.
• Basic Fishfinder— selects Sonar Page only (if equipped with GSD 20).
• Defaults— selects all pages.
First Page Option
To ‘Jump To’ a specific page:
1. Use the ARROW KEYPAD to highlight the ‘Jump To’ option to the right of the desired page and
press ENTER/MARK.
To set the First Page:
1. Use the ARROW KEYPAD to highlight the ‘First page’ option and press ENTER/MARK. Highlight
the page you wish to appear first and press ENTER/MARK.
Pages Tab
61
Reference
Main Menu:
Systm (System) Tab
Systm (System) Tab— controls system setting for beeper, speed filter, languages, system mode, simulator controls, restores factory settings, and displays software version.
The following settings are available:
• Beeper— controls audible beep. Select from ‘Off’, ‘Alarms Only’ (sounds for alarms/messages), ‘Key
and Alarm’ (sounds for key presses and alarms/messages).
• Speed Filter— averages speed-readings. Choose from ‘Off’, ‘Auto’ (automatically controls filtering),
or ‘On’ (allows you to enter a value from 1 to 255 seconds).
• Language— select from various languages for the unit’s on-screen display (English, Danish, Finnish,
German, Italian, Swedish, Spanish, Portuguese, Norwegian, French, or Dutch).
• System Mode— select from ‘Normal’ (Normal Navigation) or ‘Simulator’ (For practice ONLY).
• Set Position*— allows to set your location while in simulator mode. See page 11, starting with step
2, for additional instructions.
• Track Control*— ‘Auto Track’ will steer to the current navigation point. ‘User Track’ allows you
to enter a heading in the ‘Track’ field.
Systm (System) Tab
Normal Mode
Simulator Mode
• Track*— lets you enter a heading.
• Speed*— lets you enter a speed.
• Transducer*— allows you to select a simulated transducer type.
Retail Demo mode will
restore factory settings to the
unit if left unattended for
over 2 minutes. This mode
should only be used for
display purposes.
User waypoints will NOT be
deleted.
62
* These fields will only appear when the unit is in Simulator Mode.
The following option is also available from the “Systm” tab:
• System Information— displays the unit’s software, basemap version and electronic serial number.
Press MENU for the following options:
• Defaults— restores settings on Systm Page to default values.
• All Unit Defaults— restores all settings to Garmin’s original setup values for the entire unit.
Units Tab— defines Position Format, Map Datum, Heading, Distance, Speed, Elevation, Depth, and
Temperature.
The following settings are available:
• Position Format— is used to change the coordinate system in which a given position reading is
displayed. You should only change the position format if you are using a map or chart that specifies a
different position format or wish to use a format you are familiar with. The default format is latitude
and longitude in degrees, minutes, and thousandths of a minute (hddd°mm.mmm’). The following
additional formats are available:
• hddd.ddddd°— latitude/longitude in decimal degrees only
• hddd°mm’ss.s”— latitude/longitude in degrees, minutes, seconds
• UTM/UPS— Universal Transverse Mercator / Universal Polar Stereographic grids
• British Grid
• Dutch Grid
• Finnish KKJ27
• German Grid
• India Zones
• Irish Grid
• Loran TD
• Maidenhead
• MGRS
• New Zealand
• Qatar Grid
• RT90
• Swedish Grid
• Swiss Grid
• Taiwan Grid
• User Grid
• W Malayan RSO
Reference
Main Menu:
Units Tab

The Units tab settings will affect how navigation information
is displayed on the GPSMAP 182/182C/232. When in
doubt, seek assistance.
If you are using a map or chart in conjunction with your
GPS, make sure the settings under the ‘Units’ tab of the
GPSMAP 182/182C/232 match that of the map or chart.
This information should be displayed somewhere on the map
or chart. If the information is not present, contact the map
or chart maker to determine what position format, datum,
heading and units of measure are being used for the map
or chart.
For additional information on Loran TD setup, see pages 68-69.
• Map Datum— allows you to manually select the datum reference used to determine a given position. The default setting is ‘WGS 84’. The unit will automatically choose the best datum depending
upon your chosen position format. Datums are used to describe geographic positions for surveying,
mapping, and navigation and are not actual maps built in the unit. Although over 100 datums are
available (as listed on pages 79-80), you should only change the datum if you are using a map or
chart that specifies a different datum.

WARNING: Selecting the wrong map datum can result in substantial position errors.
When in doubt, use the default WGS 84 datum for best overall performance.
Units Tab
63
Reference
Main Menu:
Units Tab
• Heading— lets you select the reference used in calculating heading information. You can select from
‘Auto Mag Var’, ‘True’, ‘Grid’ and ‘User Mag Var’. ‘Auto Mag Var’ provides magnetic north heading
references which are automatically determined from your current position. ‘True’ provides headings
based upon a true north reference. ‘Grid’ provides headings based on a grid north reference (and
is used in conjunction with the grid position formats described on page 63). ‘User Mag Var’ allows
you to specify the magnetic variation at your current position and provides magnetic north heading
references based upon the variation you enter.
To enter a user defined magnetic variation:
1. With the “Heading” field set to ‘User Mag Var’, highlight the heading reference field (immediately
to the right) and press ENTER/MARK.
You may manually enter a
magnetic variation.

WARNING: If ‘User Mag Var’ is selected, you must
periodically update the magnetic variation as your
position changes. Using this setting, the unit will not
automatically calculate and update the magnetic
variation at your present position. Failure to update
this setting may result in substantial differences
between the information displayed on your unit and
external references, such as a magnetic compass
64
2. Use the ARROW KEYPAD to enter the magnetic variation at your current position and press
ENTER/MARK.
• Distance, Speed and Elevation— lets you select the desired units of measure for distance, speed and
elevation readouts in ‘Nautical’ (nm, kt, ft), ‘Nautical’ (nm, kt, m), ‘Statute’ (mi, mh, ft) or ‘Metric’
(km, kh, m) terms.
• Depth— lets you select the desired units of measure for depth in Feet (ft), Fathoms (fa) or Meters
(m).
• Temperature— lets you select the desired units of measure for temperature in Fahrenheit (°F) or
Celsius (°C).
Comm (Communications) Tab— lets you control the input/output format used when connecting your
GPSMAP 182/182C/232 to a GSD 20 Sonar Module, external NMEA devices, a DGPS beacon receiver, a
personal computer, another Garmin GPSMAP 182/182C/232, etc. Note: If a DGPS receiver is used, WAAS
capability will automatically be turned to ‘Off’. See pg. 87 for wiring and NMEA version information. The
unit supports two input/output ports. Individual Port settings are:
Port 1—
• Garmin Data Transfer— the proprietary format used to upload/download MapSource data, exchange
waypoint, route, track, almanac, and proximity data with a PC or another Garmin GPSMAP
182/182C/232. When you select ‘Garmin Data Transfer’, there are 11 Transfer Modes to choose from:
Host, Request Almanac, Request Proximity, Request Routes, Request Tracks, Request Waypoints, Send
Almanac, Send Proximity, Send Routes, Send Tracks, and Send Waypoints.
Reference
• Garmin Remote Sonar— supports the GSD 20 Sonar Module interface.
• NMEA In/NMEA Out— supports the input/output of standard NMEA 0183 data, and sonar NMEA input
support for the DPT, MTW and VHW sentences.
• None— provides no interfacing capabilities.
Port 2—
• Garmin Remote Sonar— supports the GSD 20 Sonar Module interface.
• Garmin DGPS— used to connect the GPSMAP 182/182C/232 with a Garmin DGPS beacon receiver.
• Other DGPS— allows DGPS input using a standard RTCM format, without any output capabilities.
• NMEA In/NMEA Out— supports the input/output of standard NMEA 0183 data, and sonar NMEA input
support for the DPT, MTW and VHW sentences. You may also adjust the NMEA output.
• RTCM In/NMEA Out— allows Differential GPS (DGPS) input using a standard RTCM format and also
provides NMEA 0183 output.
• None— provides no interfacing capabilities.
Main Menu:
Comm Tab
To select an input/output format:
1. Select the desired Port tab, then highlight the ‘Serial Data Format’ field and press ENTER/MARK.
2. Use the ARROW KEYPAD elect the desired setting and press ENTER/MARK.
To select a transfer mode:
1. Use the ARROW KEYPAD to select ‘Garmin Data Transfer’ in the ‘Serial Data Format’ field.
2. Highlight the ‘Transfer Mode’ field and press ENTER/MARK.
3. Use the ARROW KEYPAD to select the desired setting and press ENTER/MARK.
You may also adjust the NMEA output to enable/disable certain sentences and adjust the number
of Lat/Lon output precision digits. You must have one of the ports set to NMEA In/NMEA Out to use
this option. Settings will affect both Port 1 and Port 2 NMEA outputs.
To adjust the NMEA output:
1. From the Comm tab, press MENU, highlight ‘NMEA Setup’ and press ENTER/MARK.
2. Highlight the desired option and press ENTER/MARK.
3. Use the ARROW KEYPAD to select the desired setting and press ENTER/MARK. Press QUIT
when done to return to the Comm tab.
Comm Tab
Data Transfer
Progress
When transferring data
between two Garmin units,
be sure to always set one to
‘Host’ and use the other unit
to either Send or Request
the desired data.
Advanced NMEA
Output Setup Page
65
Reference
To restore the Serial Data Format settings back to the default ‘Garmin Data Transfer’:
Main Menu:
Comm tab
If ‘Garmin DGPS’ or ‘RTCM In/NMEA Out’ format is selected, additional fields are provided to control a Garmin differential beacon receiver directly from your GPSMAP 182/182C/232. You may have the
unit automatically scan for the DGPS beacon signal or you can enter the beacon frequency and bit rate
on the unit and the information will be used to tune the beacon receiver.
1. From the Comm tab, press MENU, highlight ‘Defaults’ and press ENTER/MARK.
To have the unit automatically scan for a frequency:
Status Field
SNR and Distance will
show data when signal
is received.
1. With the unit set to ‘Garmin DGPS’ or ‘RTCM In/NMEA Out’, use the ARROW KEYPAD to highlight
the “Beacon” field and press ENTER/MARK.
2. Highlight ‘Scan’ and press ENTER/MARK. The numbers in the “Frequency” field will change as the
unit scans from 284 kHz to 325 kHz, 200 bit rate, then 100, at 6-second intervals.
To restart the scan:
1. Press MENU, highlight ‘Restart Scan’ and press ENTER/MARK.
To manually enter a frequency and bit rate:
1. With the unit set to ‘Garmin DGPS’ or ‘RTCM In/NMEA Out’, use the ARROW KEYPAD to highlight
the “Beacon” field and press ENTER/MARK.

The DGPS beacon transmitters are operated by the
U.S. Coast Guard (or similar government agency in
other countries), which is responsible for their accuracy
and maintenance. For DGPS transmitter problems or
to find the most updated list of frequencies and coverage areas, contact your local USCG, or see their web
site at http://www.navcen.uscg.mil/.
66
2. Highlight ‘User’ and press ENTER/MARK.
3. Highlight the “Frequency” or “Bit Rate” field, press ENTER/MARK, then enter a frequency or bit rate
and press ENTER/MARK when done.
The “Status” field will show one of the following:
•
•
•
•
Tuning— unit is attempting to tune to the specified frequency and bit rate.
Scanning— unit is automatically scanning through the frequencies and bit rates.
Receiving— unit is receiving DGPS signal and ready for operation.
Check Wiring— unit is not making connection with DGPS receiver.
When the unit is receiving a DGPS signal, the “SNR” (Signal to Noise Ratio) and “Distance” fields will
show data. The SNR range is 0dB to 30dB, with 30 being the best. The Distance may or may not show
data, depending upon the signal being broadcast from the DGPS site.
Alarm Tab— allow you to define the alarm settings. The Alarm tab is divided into three submenu
tabs: System alarms, Nav alarms, and Sonar alarms.
System Tab:
• Clock— provides an alarm for the system clock. Enter a time in the time field and turn the alarm on
and off from the control field menu. Remember to enter alarm times in the same time format (UTC
or local) you’re using for your system. The unit must be on for the clock alarm to work.
• Battery— sets an alarm to sound when the battery is reaching a critical state of discharge.
• DGPS and Accuracy— DGPS alarm will sound when the unit loses a differential fix. The accuracy
alarm will sound when the GPS position accuracy falls outside the user-set value.
Nav Tab:
• Anchor Drag— sets an alarm to sound when you’ve exceeded a specified drift distance. Enter a value
in the distance field and use the control field to turn the alarm on and off.
• Arrival— sets an alarm to sound when you’re a specified distance or time away from a destination
waypoint. Enter a distance radius or time for sounding the alarm and use the control field to set the
alarm to ‘Off’, ‘Dist’ (Distance), or ‘Time’.
• Off Course— sets an alarm to sound when you’re off a desired course by a specified distance. Enter
a distance in the distance field and use the control field to turn the off course alarm on and off.
Sonar Tab: (You must be receiving sonar NMEA data (pg. 87) for these functions to work.
• Shallow Water/Deep Water— set alarms to sound when you enter an area of specified depth that is
too shallow and/or too deep. Enter a depth in the distance fields and use the control fields to turn
the alarms on and off.
• Water Temperature — sets an alarm to sound when the transducer reports a temperature either
above, below, inside, or outside the specified values.
• Fish — sets alarm to sound when unit detects a fish of the specified symbol size.
To set an alarm:
Use the ARROW KEYPAD to highlight desired submenu tab of the Alarm Tab.
Highlight the field below the alarm name you wish activate and press ENTER/MARK.
Change the mode to the desired setting and press ENTER/MARK.
Highlight the next field to the right and press ENTER/MARK, then enter the desired settings and
press ENTER/MARK to finish.
5. If you want the alarm to display and beep until acknowledged, highlight the ‘Persist’ box and press
ENTER/MARK to place a check mark in the box.
1.
2.
3.
4.
Reference
Main Menu:
Comm and Alarm Tabs
Alarm Tab
An alarm will stay active
until acknowledged if
‘Persist’ is checked. Press
ENTER/MARK to
acknowledge an alarm.
67
Appendix A
Loran TD
Loran TD System
LORAN C is a radio navigation aid operated and maintained in the United States by the United
States Coast Guard. The name LORAN is an acronym for “LOng RAnge Navigation”. The LORAN
system covers the entire United States and the U.S. Coastal Confluence Zone. From the perspective
of a mariner, the system is used for ocean and coastal navigation. It can be used as a supplemental
system for harbor and harbor approach navigation, and it is used for inland navigation by recreational
vehicles.
LORAN TD Feature
You may change to Loran TD from the Units
Tab on the Main Menu.
68
The LORAN TD (Time Delay) feature eases the transition from using LORAN to using GPS. The
GPSMAP unit automatically converts GPS coordinates to LORAN TDs for those who have a collection
of LORAN fixes for favorite fishing spots and other waypoints recorded as TDs. You can display your
position as a TD or enter waypoints as TDs. The accuracy to be expected from this conversion is
approximately thirty meters. When the unit is placed in the LORAN TD format mode, it simulates
the operation of a LORAN receiver. Position coordinates may be displayed as TDs, and all navigation
functions may be used as if the unit was actually receiving LORAN signals.
Using the LORAN TD Format
When creating new waypoints using LORAN TD coordinates, you must set the correct LORAN
chain number and secondary stations in the Setup TD field before storing the waypoint. You must have
the correct chain number as well as the secondary station identifiers to use this option correctly. These
values will vary per coordinate set or geographical location. Failure to enter correct information could
result in inaccuracies for the desired destionation. After the waypoint is stored in unit memory, it will
always reference the LORAN chain number and secondary stations currently selected in the Setup TD
field. If you enter a different LORAN chain number, change the secondary stations or offsets in the
Setup TD field, the active waypoint information will reflect those changes. Since the GPSMAP unit does
not rely on the LORAN signal for navigation, it can reference a different GRI chain and/or secondary
stations and still navigate to the location stored in memory.
The LORAN Position Format field is located under the Units tab in the Main Menu. The ‘LORAN
TD Setup’ window contains the fields to select the Loran GRI-Chain Number, Primary, and Secondary
Stations, and TD Offsets.
Appendix A
Loran TD Setup
To setup Loran TD from the Main Menu:
1. Using the ARROW KEYPAD, highlight the “Units” tab and then the “Position Format” field and
press ENTER/MARK. You may also press MENU from the “Units” tab to display the ‘Loran TD On’
option. (If you use ‘Loran TD On’, skip to step 3.)
2. Highlight ‘Loran TD’, press ENTER/MARK, then highlight ‘Setup’ and press ENTER/MARK.
3. To change the settings of any of the five fields, highlight the field, press ENTER/MARK, select/enter
the desired setting and press ENTER/MARK.
Loran TD Setup Page
4. When done, press the QUIT key to return to the Main Menu.
If the active GRI Chain, secondary stations or offsets have been changed since the waypoint was
created, the waypoint will now reference the active GRI-chain and secondary stations and adjust the
TD coordinates accordingly. Remember that the GPS is not relying on the LORAN signal for navigation
and actually converts the TD coordinate to a useful LAT/LON coordinate (in the background) before
storing the waypoint to memory or using it for navigation. Because of this the unit can navigate to a
TD coordinate anywhere in the world.
For more information on Loran TDs, you may download Garmin’s “Loran TD Position Format
Handbook” from the Garmin web site at http://www.Garmin.com/support/userManual.html.
Selecting the Loran
Chain Number.
69
Appendix B
Digital Selective Calling (DSC)
WHAT IS DIGITAL SELECTIVE CALLING (DSC)?
Digital Selective Calling (DSC) uses marine VHF radio and Global Positioning System (GPS) technologies to transmit and receive location information. DSC is used by mariners to assist them in two
major areas: Distress Calls and Position Reporting.
An emergency DSC Distress Call allows a vessel in trouble to transmit a substantial amount of information in a single transmission or “call,” without the need for voice communication. When any nearby
rescuer receives the DSC signal, an alarm sounds and they immediately receive the position of the caller.
The rescuer may then choose to navigate (Go To) the caller’s position to assist or forward the call on
to the Coast Guard. When the Coast Guard receives the call, they can immediately access the caller’s
information (such as who they are and the type of vessel) in their database while they are in transit to
the caller’s position.
A non-emergency DSC Position Report allows mariners to exchange and display the positions of one
another. Once a DSC position is received, the mariner may choose to create a waypoint or to show the
received position on an electronic map.
Anytime a vessel receives a DSC call, they can store that location and quickly navigate to that
position using a Go To. This makes DSC a time saver, especially in an emergency situation. In order to
use DSC, users must first register their VHF radio with the FCC and receive a Maritime Mobile Service
Identity (MMSI) number.
WHAT IS A MARITIME MOBILE SERVICE IDENTITY (MMSI)?
Maritime Mobile Service Identity (MMSI) basically allows a VHF radio to act like a phone. In order
to make a “call” on a phone, you first need a phone number to dial. The 9 digit MMSI number acts like
a phone number when used in a Position Report and as a unique identifier to the Coast Guard when
used in an emergency Distress Call. In order to to obtain a Maritime Mobile Service Identity (MMSI)
number, users must register their VHF radio with the FCC (Form 605). Garmin does not supply this
number! Information to obtain this number can be found on the next page.
70
HOW ARE MMSI ASSIGNMENTS OBTAINED?
Appendix B
Non-commercial users (e.g. recreational users who remain in domestic waters and only carry VHF,
EPIRB (Emergency Position Indicating Radio Beacons), and Radar) are not required to have a FCC
ship station license. The FCC and Coast Guard have authorized some second and third party vendors
to assign MMSI numbers. This service is limited to registering recreational vessels only. To receive
information on how to obtain a recreational MMSI number please contact: http://www.uscg.
mil/rescue21/links/mmsi.htm or http://wireless.fcc.gov/marine/.
U.S Non-Federal User: Commercial users, or those who travel outside the U.S. or Canada, must
apply for a ship station license, or an amendment to a ship station license. To find out if you require
a Ship Station license contact: http://wireless.fcc.gov/marine/fctsht14.html. If your vessel requires
licensing by the FCC you will obtain a MMSI during the application/licensing process when you file
FCC Forms 159 and 605.
U.S. Federal User: Federal users can obtain MMSI assignments from their agency radio spectrum
management office. These procedures are currently under review by the NTIA (National Telecommunications and Information Administration).
Outside the U.S.: Users can obtain an MMSI assignment from their telecommunications authority
or ship registry, often by obtaining or amending their ship station license.
In Canada: Industry Canada is responsible for assigning MMSI numbers to commercial and recreational vessels. Information is available at the following web site: http://apollo.ic.gc.ca/english/mmsi.html.
For information regarding MMSI’s visit: http://www.navcen.uscg.gov/marcomms/gmdss/mmsi.htm.
Digital Selective Calling (DSC)
HOW CAN GARMIN HELP YOU WITH DSC?
To receive Distress Calls or Position Reports, the user must have a DSC-equipped chartplotter as well
as a VHF radio with DSC support. During normal, non-emergency Position Report communication,
Channel 70 (156.525 MHz) has been set aside as the VHF/DSC digital call channel. For a Distress Call,
a mariner presses the MayDay button on their VHF radio. The call transmits on an emergency channel
continued
71
Appendix B
Digital Selective Calling (DSC)
with the MMSI number attached to the call (if the user has DSC support). Any DSC-equipped mariner
(on sea or land) within range can receive the call.
When the Garmin GPSMAP 182/182C/232 is connected to a VHF with DSC support, the GPS unit
displays a Call List, Log, and a Directory available to store incoming information received from another
user’s DSC capable VHF/GPS combination. Basic wiring is required for the Garmin unit and VHF radio
to send and receive NMEA data from each other (pg.87).
Distress Call
Distress Call Message
With a Garmin DSC capable chartplotter/sounder properly connected to a VHF radio with DSC
output, the user may receive any DSC Distress Call within range. A window will pop up and a message
will display when a Distress Call is received. To notify the user a Distress Call has been received, an
alarm will sound (if enabled). The alarm only sounds on a Distress Call, and it will not sound on a
Position Report. Distress Calls are broadcasted to all DSC users in radio range.
Options available from this screen are:
• Show on Map: If the user immediately wants to see the caller’s position they select ‘Show on
Map’.
• Create Waypoint: If the user wanted to create a waypoint of that posistion they highlight
‘Create Waypoint’ and press ENTER/MARK.
The user also has the ability to input the user’s name, if it is known. (NOTE: The user’s name
replaces the MMSI number as a reference once it is entered.)
Position Report Message
DSC Position Report
The Position Report operates similarly to the Distress Call. Remember this type of contact is like a
phone call, but no emergency alarms are set off and the call is specific to the receiver. Position Reports
are not broadcasted to all DSC users.
72
DSC Call List
The DSC Call List displays the current calls received. The GPS can manage up to 50 calls. When
‘calls’ are received, they are updated constantly to give the most current information, even if the unit is
left unattended. Any entry from the Call List can be selected to show an Entry Review.
Appendix B
Digital Selective Calling (DSC)
DSC Log
When DSC calls are received, they are automatically stored in the Log, with the latest call at the top.
The unit may store up to 100 logs. Once 100 logs are received, the oldest log file is removed when a
new call is received. The Log displays information of call Type, Date/Time, Position, and MMSI/Name.
Pressing MENU from this page allows you to ‘Sort By Time’, ‘Sort By Name’, ‘Sort By (Call) Type’,
‘Delete’ (only after highlighting a particular call), and ‘Delete All’.
DSC Entry Review
To Review a Call:
1. From the DSC tab of the Main Menu and the Log or Call List tab highlighted, press DOWN Arrow
Keypad until the call you want to review is highlighted.
2. Press ENTER/MARK to select the call.
DSC Entry Review
The DSC Entry Review operates similarly to the Distress Page and Position Report Page. This page
has the additional option to ‘Delete’ the displayed call. From the DSC Entry Review, the user can ‘Delete’ the entry, ‘Show on map’, or ‘Create Waypoint’.and create a name for the entry.
DSC Directory
The DSC Directory acts much like a phone book. A user can save up to 50 contacts. The directory
lists by Name and MMSI number. Pressing MENU from this page allows you to create a ‘New Item’,
‘Delete Item’, or ‘Delete All’.
DSC Log
73
Appendix B
There are two ways to add a new entry into the directory.
To add a new Directory entry:
Digital Selective Calling (DSC)
1. Press Menu, then highlight ‘New Item’ and press ENTER/MARK.
2. Or, with the Directory Tab highlighted press the Arrow Keypad DOWN, highlight an empty field and
press ENTER/MARK to access the New Directory Item window.
The New Directory Item window allows the user to input information of a known contact.
To add the MMSI number, Name, or Comment:
1. Press UP/DOWN on the Arrow Keypad to highlight the MMSI, Name, or Comment field.
Adding a Directory
Entry
2. Press ENTER/MARK to highlight the first digit on that field.
3. Press UP/DOWN on the Arrow Keypad to enter the numbers/letters.
4. Press LEFT/RIGHT on the Arrow Keypad to move to the next position.
5. Press ENTER/MARK to accept the entry.
6. Press UP/DOWN on the Arrow Keypad, highlight the ‘Delete’ button and press ENTER/MARK to
delete the entry, or highlight the ‘OK’ button and press ENTER/MARK to accept the entry.
DSC Setup
‘Simulate ...’ options
only appear while in
Simulator mode.
After creating a New Directory Item entry, the name created is attached to that particular MMSI
number. If the user returns to the Log, the new name is displayed under the corresponding MMSI
number. Another way to input a name is from the Entry Review Page or the DSC Distress Call or DSC
Position Report Pages. The Name field is only available in the GPS. Names cannot be sent like the
MMSI numbers to other DSC users.
DSC Setup
Garmin chartplotters have the ability to turn DSC ‘On’ or ‘Off’. This option is beneficial for users who have more than one GPS chartplotter. If the user wants only DSC to display on a particular
chartplotter, turn DSC off on the remaining Garmin chartplotters that support DSC.
74
A user also has the ability to simulate a Distress Call or a Position Report on this page. This is helpful for practice before connecting to the real system. The Distress Call simulator also helps to check if
alarms are working properly.
To run a simulation:
Appendix B
Digital Selective Calling (DSC)
1. Place the chartplotter into simulation (see pg. 7).
2. From the Main Menu, select the DSC tab, then highlight the Setup tab.
3. Highlight which simulation you wish to run and press ENTER/MARK.
Using the NAV Button
The receiver of a Distress Call or Position Report can quickly navigate to the caller using the NAV
button. Once the call is logged the user presses the NAV button and selects to Go To the MMSI number
or the Name of the caller.
75
Appendix C
Time Offsets

A simple way to determine your local time offset is how
many hours you are behind or ahead of UTC (also called
‘Greenwich’ or ‘zulu’ time).
Example: EST (Eastern Standard Time) is 5 hours behind
UTC, so your offset would be -5. Adding one hour for
daylight savings would make EDT (Eastern Daylight Time)
- 4. Subtract an hour for each time zone as you travel
west.
Offsets for Continental U.S. would be:
EST
-5
EDT
CST
-6
CDT
MST
-7
MDT
PST
-8
PDT
-4
-5
-6
-7
The chart below gives an approximate UTC (Universal Time Coordinate) time offset for the various
longitudinal zones. Check with local charts for more detailed information. If you are in daylight savings
time, add one hour to the offset.
Longitudinal Zone
Offset
Longitudinal Zone
Offset
W180.0º to W172.5º
-12
E007.5º to E022.5º
+1
W172.5º to W157.5º
-11
E022.5º to E037.5º
+2
W157.5º to W142.5º
-10
E037.5º to E052.5º
+3
W142.5º to W127.5º
-9
E052.5º to E067.5º
+4
W127.5º to W112.5º
-8
E067.5º to E082.5º
+5
W112.5º to W097.5º
-7
E082.5º to E097.5º
+6
W097.5º to W082.5º
-6
E097.5º to E112.5º
+7
W082.5º to W067.5º
-5
E112.5º to E127.5º
+8
W067.5º to W052.5º
-4
E127.5º to E142.5º
+9
W052.5º to W037.5º
-3
E142.5º to E157.5º
+10
W037.5º to W022.5º
-2
E157.5º to E172.5º
+11
W022.5º to W007.5º
-1
E172.5º to E180.0º
+12
W007.5º to E007.5º 0
76
The GPSMAP 182/182C/232 uses an on-screen pop-up message system to alert you to unit operating characteristics. Press the ENTER key to acknowledge and return to the page you were viewing.
Alarm Clock— The alarm clock has sounded.
Anchor Drag Alarm— You have drifted out of the specified distance range.
Antenna Input Shorted To Ground— Check antenna wiring/connections or antenna replacement.
Approaching Waypoint— You are a specified alarm distance from a destination waypoint.
Arrival At Waypoint— You have arrived at the destination waypoint.
Basemap Failed Unit Needs Repair— Internal problem with unit. Contact your dealer or Garmin
Product Support (pg. iv) to have the unit serviced.
Database Error— Internal problem with unit. Contact your dealer or Garmin Product Support (pg.
iv) to have the unit serviced.
Lost Satellite Reception— The unit has lost satellite signals. Check antenna connections or try
moving to a location with a clear view of the sky.
Memory (RAM) Failed Unit Needs Repair— Internal problem with unit. Contact your dealer or
Garmin Product Support (pg. iv) to have the unit serviced.
Memory (ROM) Failed Unit Needs Repair— Internal problem with unit. Contact your dealer or
Garmin Product Support (pg. iv) to have the unit serviced.
No DGPS Position— No differential correction data is available or not enough data is available to
compute a DGPS position.
Off Course Alarm— You have exceeded the specified off-course distance.
Processor Failed Unit Needs Repair— Internal problem with unit. Contact your dealer or Garmin
Product Support (pg. iv) to have the unit serviced.
Proximity Alarm List is Full— You have used all ten proximity waypoints.
Proximity Alarm Waypoint— You have entered the alarm radius for the proximity waypoint
indicated.
Appendix D
Messages
77
Appendix D
Messages
78
Proximity Overlaps Another Proximity Waypoint—The alarm radius specified overlaps the area
specified for another proximity waypoint. Adjust distance.
Route Already Exists: <route name>— You have entered a route name that already exists in memory.
Modify route name or delete the previous route name.
Route Does Not Exist: <route name>— Route has been renamed or removed from memory and
cannot be used.
Route Is Full— You have attempted to add more than 50 points to a route. Reduce number of points
or create second route.
Route Memory Is Full Can’t Create Route— Maximum amount of 50 routes already in unit memory
and no additional routes can be added until existing ones are removed.
Route Truncated— Uploaded route from other device has more than 50 points. Reduce number
of points.
Running Simulator— Unit is in simulator (practice) mode.
Track Already Exists: <track name>— You have entered a saved track name that already exists in
memory. Modify track name or delete the previous track name.
Track Memory Is Full Can’t Create Track— Track log memory is full. No additional track log data
can be stored without deleting old data to create memory space.
Track Truncated— A complete upload track will not fit into memory. The oldest track log points were
deleted to make space for the most recent data.
Transfer Complete— The unit has finished uploading/downloading information to the connected
device.
Waypoint Already Exists: <waypoint name>— You have entered a waypoint name that already
exists in memory. Modify waypoint name or delete the previous waypoint name.
Waypoint Memory Is Full Can’t Create Waypoint— You have used all 3000 waypoints available.
Delete unwanted waypoints to make space for new entries.
Adindan Adindan-
Ethiopia, Mali, Senegal, Sudan
Chua Astro
Chua Astro- Paraguay
Afgooye
Afgooye- Somalia
Croatia
Croatia
AIN EL ABD ‘70
AIN EL ANBD 1970- Bahrain Island, Saudi
Arabia
Corrego Alegr
Corrego Alegre- Brazil
Djakarta
Djakarta (Batavia)- Sumatra Island
(Indonesia)
Anna 1 Ast ‘65
Anna 1 Astro ‘65- Cocos I.
ARC 1950
ARC 1950- Botswana, Lesotho, Malawi,
Swaziland, Zaire, Zambia, Zimbabwe
Dos 1968
Dos 1968- Gizo Island
(New Georgia Islands)
ARC 1960
Kenya, Tanzania
Dutch
Dutch
Ascnsn Isld ‘58
Ascension Island ‘58- Ascension Island
Easter Isld 67
Easter Island 1967
Astro B4 Sorol
Sorol Atoll- Tern Island
European 1950
European 1950- Austria, Belgium, Denmark,
Finland, France, Germany, Gibraltar, Greece,
Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland
European 1979
European 1979- Austria, Finland,
Netherlands, Norway, Spain, Sweden,
Switzerland
Astro Bcn “E”
Astro Beacon “E”- Iwo Jima
Astro Dos 71/4
Astro Dos 71/4- St. Helena
Astr Stn ‘52
Astronomic Stn ‘52- Marcus Island
Aus Geod ‘66
Australian Geod ‘66- Australia, Tasmania
Island
Aus Geod ‘84
Australian Geod ‘84- Australia, Tasmania
Island
Finland Hayfrd
Finland Hayford- Finland
Gandajika Base
Gandajika Base- Republic of Maldives
Austria
Austria
GDA
Geocentric Datum of Australia
Bellevue (IGN)
Efate and Erromango Islands
Geod Datm ‘49
Geodetic Datum ‘49-New Zealand
Bermuda 1957
Bermuda 1957- Bermuda Islands
Guam 1963
Guam 1963- Guam Island
Bogata Observ
Bogata Obsrvatry- Colombia
Gux 1 Astro
Guadalcanal Island
Campo Inchspe
Campo Inchauspe- Argentina
Hjorsey 1955
Hjorsey 1955- Iceland
Canton Ast ‘66
Canton Astro 1966- Phoenix Islands
Hong Kong ‘63
Hong Kong
Cape
Cape- South Africa
Hu-Tzu-Shan
Taiwan
Cape Canavrl
Cape Canaveral- Florida, Bahama Islands
Indian Bngldsh
Indian- Bangladesh, India, Nepal
Carthage
Carthage- Tunisia
Indian Thailand
Indian- Thailand, Vietnam
CH-1903
CH 1903- Switzerland
Indonesia 74
Indonesia 1974-Indonesia
Chatham 1971
Chatham 1971- Chatham Island
(New Zealand)
Ireland 1965
Ireland 1965- Ireland
ISTS 073 Astro
ISTS 073 ASTRO ‘69- Diego Garcia
Appendix E
Map Datums

The GPSMAP’s built-in world-wide database includes
coverage down to 20 n.m. (30 km). Note that the GPSMAP
182/182C/232 basemap is valid to 75º north and 60º south
of latitude.

The ‘User’ datum is based on a WGS-84 Local datum and is
an advanced feature for unlisted or custom datums. To learn
more, check your local library or on the world wide web for
educational materials on datums and coordinate systems.
79
Appendix E
Map Datums
Johnston Island
Johnston Island Kandawala
Kandawala- Sri Lanka
Kerguelen Islnd
Kerguelen Island
Kertau 1948
West Malaysia, Singapore
L. C. 5 Astro
Cayman Brac Island
Liberia 1964
Liberia 1964- Liberia
NAD27 Central
North American 1927-Central America
(Belize, Costa Rica, El Salvador, Guatemala,
Honduras, Nicaragua)
NAD27 CONUS
North Am. 1927- Mean Value (CONUS)
NAD27 Cuba
North American 1927- Cuba
NAD27 Grnland
North American 1927- Greenland
(Hayes Peninsula)
NAD27 Mexico
N. American 1927- Mexico
NAD27 San Sal
North American 1927- San Salvador Island
NAD83
North American 1983- Alaska, Canada,
Central America, CONUS, Mexico
Luzon Mindanao
Luzon- Mindanao Island
Nhrwn Masirah
Nahrwn- Masirah Island (Oman)
Luzon Philippine
Luzon- Philippines
(excluding Mindanao Isl.)
Nhrwn Saudi A
Nahrwn- Saudi Arabia
Mahe 1971
Mahe 1971- Mahe Island
Marco Astro
Marco Astro- Salvage Isl.
Massawa
Massawa- Eritrea (Ethiopia)
Merchich
Nhrwn United A
Nahrwn- United Arab Emirates
Naparima BWI
Naparima BWI- Trinidad and Tobago
Obsrvtorio ‘66
Observatorio 1966- Corvo and Flores Islands
(Azores)
Merchich- Morocco
Old Egyptian
Old Egyptian- Egypt
Midway Ast ‘61
Midway Astro ‘61- Midway
Old Hawaiian
Old Hawaiian- Mean Value
Minna
Minna- Nigeria
Oman
Oman- Oman
NAD27 Alaska
North American 1927- Alaska
Ord Srvy GB
NAD27 Bahamas
North American 1927- Bahamas
(excluding San Salvador Island)
Old Survey Grt Britn- England, Isle of Man,
Scotland, Shetland Isl., Wales
Pico De Las Nv
Canary Islands
Potsdam
Potsdam-Germany
Ptcairn Ast ‘67
Pitcairn Astro ‘67- Pitcairn
Prov S Am ‘56
Prov So Amricn ‘56- Bolivia, Chile,Colombia,
Ecuador, Guyana, Peru, Venezuela
Prov S Chln ‘63
So Chilean ‘63- S. Chile
NAD27 Canada
North American 1927- Canada and
Newfoundland
NAD27 Canal Zone
North Am. 1927- Canal Zone
NAD27 Caribbn
North American 1927- Caribbean
(Barbados, Caicos Islands, Cuba, Dom.
Rep., Grd. Cayman, Jamaica, Leeward
and Turks Islands)
80
Puerto Rico
Puerto Rico & Virgin Isl.
Qatar
Qatar National- Qatar
Qornoq
Qornoq- South Greenland
Reunion
Reunion- Mascarene Island
Rome 1940
Rome 1940- Sardinia Isl.
RT 90
Sweden
Santo (Dos)
Santo (Dos)- Espirito Santo
Sao Braz
Sao Braz- Sao Miguel, Santa Maria
Islands
Sapper Hill ‘43
Sapper Hill 1943- East Falkland
Island
Schwarzeck
Schwarzeck- Namibia
Sth Amrcn ‘69
S. American ‘69- Argentina, Bolivia,
Brazil, Chile, Colombia, Ecuador,
Guyana, Paraguay, Peru, Venezuela,
Trin/Tobago
South Asia
South Asia- Singapore
SE Base
Southeast Base- Porto Santo and
Madiera Islands
SW Base
Southwest Base- Faial, Graciosa,
Pico, Sao Jorge and Terceira Islands
Taiwan
Modified Taiwan
Timbalai 1948
Timbalai 1948- Brunei and E.
Malaysia (Sarawak and Sabah)
Tokyo
Tokyo- Japan, Korea, Okinawa
Tristan Ast ‘68
Tristan Astro 1968- Tristan da Cunha
User
User-defined custom datum
Viti Levu 1916
Viti Levu 1916- Viti Levu/Fiji
Islands
Wake-Eniwetok
Wake-Eniwetok- Marshall
WGS 72
World Geodetic System 72
WGS 84
World Geodetic System 84
Zanderij
Avg Speed— The average of all second-by-second speed readings since last reset.
Bearing (BRG)— The compass direction from your present position to a destination waypoint.
Course— The desired course between the active ‘from’ and ‘to’ waypoints.
Distance (Dist)— The ‘great circle’ distance from present position to a destination waypoint.
Distance to Destination— The ‘great circle’ distance from present position to a GOTO destination,
or the final waypoint in a route.
Distance to Next— The ‘great circle’ distance from present position to a GOTO destination, or the
next waypoint in a route.
Elevation— Height above mean sea level (MSL).
ETA— Estimate Time of Arrival. The estimated time you will reach your destination waypoint, based
on current speed and track.
ETA at Destination— The estimated time you will reach a GOTO destination, or the final waypoint
in a route.
ETA at Next— The estimated time you will reach a GOTO destination, or the next waypoint in
a route.
Fuel— The fuel required to travel from present position to the indicated route waypoint.
Leg Dist— The distance between two route waypoints.
Leg Fuel— The fuel required to travel from a route waypoint to the next waypoint (in sequence)
in the route.
Leg Time— The time required to travel from a route waypoint to the next waypoint (in sequence)
in the route.
Max Speed— The maximum second-by-second speed recorded since last reset.
Moving Average Speed— Average speed while the unit is moving.
Moving Trip Timer— Total time the unit has been moving.
Appendix F
Navigation Terms
81
Appendix F
Navigation Terms
BRG
TRK
F
OF
S
UR
CO
SP
EE
D
E
DES
IR
TRA ED
CK
'FROM'
WAYPOINT
82
DIS
NORTH
NORTH
TAN
CE
TO
DES
TINA
TIO
N
DESTINATION
WAYPOINT
Odometer— A running tally of distance travelled, based upon the distance between second-by-second
position readings.
Off Course— The distance you are off a desired course in either direction, left or right. Also referred
to as ‘cross-track error’ or ‘course error’.
Speed— The current velocity at which you are travelling, relative to a ground position. Also referred
to as ‘ground speed’.
Time To— The estimated time required to reach a GOTO destination, or the next waypoint in a route.
Also referred to as ‘estimated time en route’.
Time to Destination— The estimated time required to reach a GOTO destination, or the final
waypoint in a route.
Time to Next— The estimated time required to reach a GOTO destination, or the next waypoint
in a route.
To Course— The recommended direction to steer in order to reduce course error or stay on course.
Provides the most efficient heading to get back to the desired course and proceed along your route.
Track— The direction of movement relative to a ground position. Also referred to as ‘ground track’.
Trip Odometer— A running tally of distance travelled since last reset. Also see ‘Odometer’.
Total Average Speed— Average speed of unit for both moving and stopped speeds since last timer
reset.
Total Trip Timer— Total time the unit has been in operation since last reset of the trip timers.
Turn— The angle difference between the bearing to your destination and your current track. ‘L’
indicates you should turn left, ‘R’ indicates you should turn right. The degrees indicate the angle
you are off course.
VMG— Velocity Made Good. The speed you are closing in on a destination along a desired course. Also
referred to as the ‘vector velocity’ to your destination.
Physical Specifications
Size:
182: 6.18" H x 6.30" W x 2.64" D (15.7cm x 16.0cm x 6.7cm)
232: 7.55" H x 7.7" W x 2.57" D (19.18 x 19.56 x 6.53 cm)
182C: 6.18" H x 6.30" W x 2.64" D (15.7cm x 16.0cm x 6.7cm)
Weight:
182/ 182C: Less than 2.0 lb. (.763Kg); 232: less than 2.0 lb. (.907Kg)
Display:
182: 5.5" diagonal (14.1cm) 232: 7.1" diagonal (18.03cm) high-contrast, 10-level gray
FSTN LCD with adjustable backlighting (360 x 240 pixels) 182C: 5.0" diagonal
(12.7cm) 16-color TFT display with backlighting (234 x 320 pixels)
Case:
Fully gasketed, high-impact plastic alloy, waterproof to IEC 529-IPX-7
Temp. Range: 5°F to 158°F (-15°C to 70°C)
Performance
Receiver:
Differential-ready 12 parallel channel WAAS capable receiver
Acquisition Times:
Warm:
Approx. 15 seconds
Cold:
Approx. 45 seconds
AutoLocate: Approx. 2 minutes
Update Rate:
1/second, continuous
GPS Accuracy: Position*: <15 meters (49 feet), 95% typical*
Velocity: 0.05 meters/sec steady state
DGPS (USCG) Accuracy:
Position: 3-5 meters (10-16 feet) with optional Garmin DGPS receiver, 95% typical*
Velocity: 0.05 meters/sec steady state
DGPS (WAAS) Accuracy:
Position: <3 meters (10 feet), 95% typical*
Velocity: 0.05 meters/sec steady state
Dynamics:
6g's
* Subject to accuracy degradation to 100m 2DRMS under the U.S. DOD-imposed Selective Availability Program.
Power
Source:
Usage:
Fuse:
182C: 10-35V DC; 182/232: 8-35vDC
182/232: 4 watts max; 182C: 10 watts max. at 13.8vDC
AGC/3AG - 1.5 Amp
Appendix G
Specifications
UNIT CARE
Cleaning - The GPSMAP 182C lens is coated with a
special anti-reflective coating which is very sensitive to skin
oils, waxes and abrasive cleaners. CLEANERS CONTAINING AMMONIA WILL HARM THE ANTI-REFLECTIVE
COATING. It is very important to clean the lens using an
eyeglass lens cleaner which is specified as safe for antireflective coatings and a clean, lint-free cloth. Units with a
monochrome display may use the same cleaning method.
The unit’s case is constructed of high quality material and
does not require user maintenance other than cleaning.
Clean the unit housing using a cloth lightly dampened with
a mild detergent solution and then wipe dry. Avoid chemical
cleaners and solvents that may damage plastic components.
Do not apply cleaner to electrical contacts on the back of
the unit.
Storage - Do not store the unit where exposure to temperature extremes may occur (see left), as permanent damage
may result. User information, such as waypoints, routes,
etc. will be retained in the unit’s memory, without the need
for external power. It is always a good practice to back up
important user data by manually recording it or downloading it to a PC (see pg. 64).
83
Appendix H
Antenna Installation
Installing the GPSMAP 182/182C/232
The GPSMAP 182/182C/232 must be properly installed according to the following instructions to
get the best possible performance. If you have the GPSMAP 182/182C/232 with the built-in internal
bail mount antenna, you may skip this section and proceed to the next page. For unit’s purchased with
the remote GA 29 antenna, follow the instructions below. To complete the installation, you’ll need the
appropriate fasteners and a 1” x 14-thread marine antenna mount available at most marine dealers.
When in doubt, seek professional assistance.
Mounting the GPS Antenna
Suggested locations for mounting the GA 29 antenna.
The antenna should be mounted in a location that has a clear, unobstructed view of the sky in all
directions to ensure the best reception. Avoid mounting the antenna where it will be shaded by the
boat’s superstructure, a radome antenna, or mast. Sailboat users should avoid mounting the antenna
high on the mast to prevent inaccurate speed readings caused by excessive heeling. Most marine
VHF and LORAN antennas should not seriously degrade the GPS antenna’s reception. Never paint the
antenna or clean it with harsh solvents.
The Garmin antenna screws directly onto any standard 1” x 14-thread antenna mount. If you
need to raise the antenna to avoid shading, try using a 1” x 14-thread extension mast available at most
marine dealers.
To install the GPS antenna:
It is possible to route the coaxial cable either through, or
outside the antenna mount. It is possible to remove the
BNC connector on the coaxial cable and the coaxial cable
shortened to ease installation, however, doing so will void the
antenna warranty. If the BNC connector is removed it must
be replaced with a new solder-on or crimp BNC connector.
84
1. Screw the antenna directly onto the 1” x 14-thread mount.
2. Route the cable to the mounting location of the display unit. Use the appropriate tie-wraps,
fasteners and sealant to secure the cable along the route and through any bulkhead or deck.
3. Once the GPSMAP 182/182C/232 unit has been installed, connect the cable to the antenna connector on the back of the display unit. Make sure that you turn the antenna cable connector 1/4
turn clockwise to lock the cable into place.
Mounting the GPSMAP 182/182C/232 Unit
The GPSMAP 182/182C/232’s compact, waterproof case is suitable for mounting in exposed
locations or at the nav station. The unit comes with a gimbal bracket that can be used for surface or
overhead mounting. When choosing a location for the display unit, make sure you consider the following conditions:
Appendix H
Unit Installation
• There should be at least a 3” (7 cm) clearance behind the case to allow connection of the
antenna (external antenna only), power/data cables.
• The mounting surface should be heavy enough to support the unit and protect it from excessive
vibration and shock.
• For GPSMAP 182/182C/232 unit’s with the built-in internal bail mount antenna, it should be
mounted in a location that has the clearest, most unobstructed view of the sky in all directions to
ensure the best reception. Avoid mounting the unit where it will be blocked by the boat’s superstructure, a radar arch, or mast.

The temperature range for the GPSMAP 182/182C/232 is 5°F to 158°F (-15°C to 70°C).
Extended exposure to temperatures exceeding this range (in storage or operating
conditions) may cause failure of the LCD screen. This type of failure and related consequences are NOT covered by the manufacturer’s limited warranty.
To install the GPSMAP 182/182C/232 unit:
1. Place the mounting bracket in the desired location.
2. Mark and drill the four mounting holes for the fastener you are using.
3. Fasten the bracket to the surface using the appropriate fastener.
4. Insert the GPSMAP 182/182C/232 into the mounting bracket. The bracket is designed for a tight fit
to provide additional support when swiveling the unit.
5. Screw the two mounting knobs through the bracket and into the display case.
6. Connect the power/data and antenna cables (external antenna only) to the back of the unit, making
sure the locking rings are fully tightened on both connectors.
85
Appendix H
Unit Installation
The GPSMAP 182/182C/232 with external antenna can be flush mounted on a flat panel of .08.52” thickness using the cam lobe feature on its gimbal mounting bracket. When flush mounting the
GPSMAP 182/182C/232, be sure to choose an appropriately sized location for the unit (see unit dimensions pg. 83) and leave 1.25” (32mm) clearance below the data card slot for inserting/removing data
cards. For flush mounting the GPSMAP 232 unit, skip to the next set of instructions.
To flush mount the GPSMAP 182/182C unit using the gimbal mounting bracket:
Figure 1
Pull gimbal bracket down
until cam lobe contacts
surface.
1. Cut a 4.33”W x 4.33”H (110 x 110 mm) hole in the panel.
2. Place the GPSMAP 182/182C/232 into the hole from the front until the flange rests against the
mounting surface.
3. From the back of the panel, loosely attach the bracket such that the slot in the ratchet area points
away from the mounting panel (figure 1).
4. Rotate the bracket downward until the panel is pinched tightly between the unit’s flange and
bracket lobe (figure 1).
5. Tighten the knobs and connect the power/data and antenna cables. Note: if the panel is too thick
to allow use of the supplied knobs, two M6 screws may be used to secure the bracket.
The GPSMAP 182/182C/232, with external antenna, may also be flush mounted on a flat panel
using its existing mounting bracket.
Figure 2
Figure 3
86
To flush mount the GPSMAP 182/182C/232 unit:
1. Remove the four M5 screws from the back of the unit and remove the mounting bracket.
2. Using the mounting bracket as a template, outline the center relief area and mark the location of
the four screw holes centers on your bulkhead or other surface (figure 2).
3. Cut the relief hole from the panel and drill the four 0.20” (5.08 mm) screw holes.
4. Place the GPSMAP 182/182C/232 into the relief hole until it rests flush against the mounting
surface.
5. Secure the unit to the mounting surface using the M5 screws. Do not try to force the screws deeper
into the holes than the holes will allow. For thick mounting surfaces, insert the M5 screws directly
thru the drilled holes (figure 3). For thin panels, place the mounting bracket on the back side of the
panel for more support. Connect the power/data and antenna cables.
Connecting the Power/Data
The power/data cable connects the GPSMAP 182/182C/232 to a DC system and provides interface
capabilities for connecting external devices. The color code in the diagram below indicates the appropriate harness connections. Replacement fuse is a AGC/3AG 1.5 Amp fuse. For wiring the GPSMAP to
a GSD 20 Sonar Module, refer to the “GSD 20 Installation Guide”(190-00255-00).
PIN 1 (red) 182C: 10-35vDC; 182/232: 8-35vDC
PIN 2 (black) Ground (Power and Data)
3
4
2
PIN 3 (blue) NMEA OUT (Com 1 TX)
5
6
1
7
PIN 4 (brown) NMEA IN (Com 1 RX)
PIN 5 (white) RTCM/NMEA IN (Com 2 RX)
DC �
Power Source
RXD +
Autopilot/
NMEA Device
RXD -
PIN 6 (green) NMEA OUT (Com 2 TX)
PIN 7 (yellow) Alarm Low
NMEA
Device with
Sonar Output
TXD +
Alarm Relay
100ma max
coil current
TX+
RX+
GSD 20,
Beacon
Receiver or
DSC VHF
Interfacing
The following formats are supported for connection of external devices: Garmin proprietary GSD
20 Sonar Module and Differential GPS (DGPS), NMEA 0183 version 2.3 (3.01 on GPSMAP 182C
software version 5.20 & GPSMAP 182/232 4.20 and higher) , RTCM SC-104 input (version 2.0).
The following are the sentences for NMEA 0183, version 2.3 and later output:
Approved sentences— GPBWC, GPRMC, GPGGA, GPGSA, GPGSV, GPGLL, GPBOD, GPRMB, GPRTE,
GPVTG, GPWPL and GPXTE. Proprietary sentences— PGRME, PGRMM, PGRMZ, and PSLIB.
The GPSMAP 182/182C/232 also includes NMEA input with support for the WPL sentence and sonar
NMEA input with support for the DPT (Depth), MTW (Water Temp) and VHW (Water Speed & Heading) sentences. If connecting to COM2 for sonar NMEA input, the unit interface must be set to NMEA
In/NMEA Out (see page 65). If connecting to COM1, the unit must be set to NMEA In/NMEA Out.
Appendix H
Wiring and
Interfacing
You can download a copy of Garmin's
proprietary communication protocol the Help
and Support section of our web site at www.
Garmin.com.
Documentation concerning NMEA
&RTCM formats and sentences
are available for purchase from:
National Marine Electronics
Association (NMEA)
Seven Riggs Avenue
Severna Park, MD 21146
U.S.A.
410-975-9425
410-975-9450 FAX
www.nmea.org
Radio Technical Commission For
Maritime Services (RTCM)
1800 Diagonal Road, Suite 600
Alexandria, VA 22314-2480
U.S.A.
703-684-4481 (Info Only)
703-836-4229 FAX
www.rtcm.org
87
Appendix H
Installing and Removing
Data Cards
Installing and Removing Data Cards
The GPSMAP 182/182C/232 uses optional Garmin marine BlueChart and MapSource data cards to
display digital charts and maps on-screen. Data cards are installed in the card slot located at the bottom
right of the unit. Data cards may be installed or removed at any time, whether the unit is on or off.
To install a data card:
1. Open the card door by pressing together on the two handles at the bottom of the door and
lifting it up and open.
2. Insert the card, with the label facing front and the handle bottom, into the slot.
3. Firmly push the card into the unit. It in not necessary to force the card and about 1/2” will still
be exposed when it is properly inserted. If the unit is on, a confirmation tone will sound and
a message will display on the screen noting the card details when the card has been properly
installed and accepted.
4. Close the cover.
The first time you insert a
data card, the unit will take a
few seconds to read the card.
If you insert a data card and get a ‘card format not recognized’ message, try removing the card and
reinserting it. If the card is still not recognized, contact Garmin Support or your Garmin dealer for
assistance. Data cards are not waterproof, should not be exposed to moisture or excessive static charges,
and should be stored in the case supplied with the card.
To remove a data card:
1. Open the card door by pressing together on the two handles at the bottom of the door and
lifting it up and open.
Once the data card has been
read, a summary screen will
appear. Press ENTER/MARK
to acknowledge.
88
2. Grasp the card handle at the bottom and pull down firmly.
3. If the unit is on, a confirmation tone will sound when the data card has been removed.
Installing the Ferrite Bead Clamp (GPSMAP 182C Only)
Appendix H
In order to filter Radio Frequency Interference (RFI) radiation, which could possibly interfere with
items such as televisions, radios, or other marine electronics that are operating in close proximity to the
GPSMAP with GA 29 remote antenna, a ferrite bead filter clamp and neoprene foam strip are included for
attachment to the unit’s antenna cable. The clamp attaches to the antenna cable near the point at which
it connects to the back of the GPSMAP. The foam strip has adhesive on one side and is used to keep the
clamp stationary on the cable.
Installing Ferrite Clamp
Ferrite Bead Filter
To install the ferrite bead clamp:
1. Choose a location which is no more than two inches (5 cm) from the back of the GPSMAP.
2. Remove the backing from the adhesive foam strip. Place the strip at an angle to the cable with
adhesive facing towards the cable. Snugly spiral wrap the foam strip around the antenna cable. (Fig. 1)
Foam Strip
3. Open the filter clamp by slightly pulling on the latch and opening the filter halves.
4. Position the clamp (Fig. 2) and squeeze it shut around the cable until the latch is securely fastened. If
the clamp is difficult to close, you may want to remove some of the foam strip.
The clamp should not need to be replaced under normal use. Please contact your Garmin dealer or
Garmin Support if you have any questions or require a replacement filter clamp.
Figure 1
Figure 2
Installed filter
89
Appendix I
Index
A
Accuracy .............................................53
Accuracy Circle ......................................26
Active Route Page .......................16, 29, 48
Active Route Page Options .....................48
Alarms ...................................................67
Anchor Drag Alarm ................................67
Arrival Alarm .........................................67
ARROW KEYPAD ....................................1
B
Backlighting .........................................6-7
Battery Alarm .......................................67
Bearing Line ...........................................26
Bearing/Distance Measuring ...................23
Beeper ...................................................62
C
Capabilities ..............................................v
Cautions .................................................iii
Celestial Page Settings ............................58
Changing Data Fields .................16, 22-23
90
Cleaning, Unit ........................................83
Clearing the Track Log ...........................38
Clock Alarm ..........................................67
Compass Page ..................................14, 27
Compass Page Options ..........................27
Configuring the Map ........................24-26
Cursor Movement ........................9, 19-20
D
Data Card Installation ............................82
Data Transfer .........................................65
Date/Time ...........................................61
Datum, Map ...............................63, 79-80
Daylight Savings Time ...........................61
Deep Water Alarm .................................67
Depth ..............3, 22, 31, 33, 63, 65, 67, 87
DGPS Interface Settings ....................65-66
DGPS Status ...............................54, 66
Differential Receiver Status ...............54, 66
Dilution Of Precision (DOP) .............52-54
Distance, Speed and Elevation................63
DSC .......................................51, 60, 70-75
E
Editing Waypoints .................................32
ENTER/MARK Key ............................1, 30
F
Ferrite Clamp Installation ......................89
Find Function .......................................49
Follow Track ..........................................38
Follow Route....................................12, 43
Fuel Flow ..............................................47
Full Screen Map .....................................21
G
GPS Status ...............................5, 52
Go To Waypoint ...............................37-38
Going to a Destination .....................11, 37
H
Heading ............................................ 63
Heading Line..........................................26
Hide Numbers .......................................21
Highway Page ............................15, 28
Highway Page Configuration .................29
Highway Page Options ..........................29
How To Enter Data ...............................2, 3
“How To” Index ....................................viii
How To Select Options ............................2
I
IN Key .....................................................1
Initialization .................................4-5, 52
Installation .....................................84-89
Interface Formats .................................65
Interfacing .....................................65, 87
J
Jump To Page ....................................61
K
Keypad Usage ........................................1
Index
N
Land Mode ..........................................24
Language Selection ..............................62
Light Sectors .........................................26
Local Time Offset ...........................61, 76
Loran TD ........................................68-69
Loran TD Setup ...................................69
NAV Key ...........................1, 12, 37-41, 43
Navaid Symbols................................25-26
Navigation Terms .............................81-82
Nearest To Boat .....................50, 56-57, 59
Nearest To Destination ..........50, 56-57, 59
Nearest To Next ....................50, 56-57, 59
Nearest To Other ...................50, 56-57, 59
NMEA Output Formats ....................65, 87
M
O
Main Menu .....................................51-57
Main Menu Page ..................................51
Map Configuration .........................24-26
Map Datums .............................63, 79-80
Map Page .................................8-9, 18-27
Map Page Layout ............................22-23
Map Page Options ................................21
Map Scales ...........................................20
Map, Zooming .................................9, 20
Measure Distance/Bearing .....................23
MENU Key ............................................1
Messages ........................................77-78
MMSI Number .............
....................70-75
Odometers, Trip ....................................58
Off Course Alarm ...................................67
OUT Key .................................................1
Overzoom .............................................20
L
Appendix I
MOB Key ..............................................40
Moonrise/Moonset .................................58
P
Packing List .............................................vi
PAGE Key ................................................1
Pages Menu ...........................................61
Position Format .....................................63
Power Off ..............................................17
Power On .............................................4, 6
Power/Backlight/Key ...............................1
Preface .....................................................ii
Proximity Waypoints ........................35-36
Q
QUIT Key ................................................1
R
Receiver Status.......................................52
Re-evaluate Active Route ........................48
Registration .............................................ii
Restore Unit Defaults..............................62
Reviewing Waypoints ............................32
Route List Page .......................................43
Route Review Page .................................44
Routes ............................................41-47
Routes- Activating ............................12, 43
Routes- Copying ....................................43
Routes- Creating ...............................41-42
Routes- Deactivating ..............................43
Routes- Deleting ..............................43, 47
Routes- Editing .................................44-46
Routes- Insert/Add Turns & Points ...45-46
Routes- Inverting .............................43, 48
Routes- Naming .....................................44
91
Appendix I
Index
Routes- Trip Planning ............................47
Routes- Remove Points .....................45-46
Routes- Reviewing Points .................43-45
S
Satellite Sky View ...............................5, 52
Serial Data Format .................................65
Serial Number .........................................iv
Shallow Water Alarm .............................67
Show Numbers ......................................21
Signal Strength Bars ...........................5, 52
Simulator ...........................................7, 62
Simulator Speed ....................................62
Software Version ....................................62
Sonar Page...............................................8
Sonar Setup............................................51
Specifications ........................................83
Speed, Distance and Elevation................63
Speed Filter ...........................................59
Storage..................................................83
Sunrise/Sunset ...........................48, 58, 68
Symbols, Waypoint ..............10, 13, 30-34
System Mode .........................................62
92
T
W
Table of Contents ...................................vii
Temperature ................................23, 51, 63
Tide Charts .......................................56-57
Tide Page Settings .............................56-57
Time Format ..........................................61
Time Offsets ....................................61, 70
Time Zone .............................................61
Time, Daylight Savings ..........................61
Timers, Trip ...........................................58
TracBack .....................................38-39, 59
Track Log- Clearing ..........................38, 60
Track Log- Deleting ................................60
Track Log- Displaying ................26, 29, 60
Track Log- Saving .............................38, 60
Track Log- Showing on Map.......26, 39, 60
Track Log- Style .......................................39
WAAS ...................................v, 53-55, 65
Warnings ...............................................iii
Warranty ................................................iv
Water Mode ..........................................24
Waypoint Lists .................................32-36
Waypoint Options ...........................34-35
Waypoints- Creating .10, 13, 19, 20, 30-31
Waypoints- Deleting .......................33-34
Waypoints- Editing ..........................33-35
Waypoints- Manually Entered..........30-31
Waypoints- Moving ...............................33
Waypoints- Naming ..............................32
Waypoints- Nearest ..35, 37, 42-43, 47, 59
Waypoints- Proximity ......................35-36
Waypoints- Reviewing .....................13, 32
Welcome Page .........................................ii
Wiring Installation ................................87
Track Setup ......................................59-60
Trip and Fuel Planning ...........................47
Trip Odometers .....................................58
Trip Timers ............................................58
Z
U
Units Setting .........................................63
Units Care .............................................83
User Datum ...........................................79
Zooming ..........................9, 15, 18, 20, 28
Zoom In Key ..........................................1
Zoom Out Key .......................................1
For the latest free software updates (excluding map data)
throughout the life of your Garmin products, visit the
Garmin web site at www.garmin.com
© 2004 Garmin Ltd. or its subsidiaries
Garmin International, Inc.
1200 East 151st Street, Olathe, Kansas 66062, U.S.A.
Garmin (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9DL, U.K.
Garmin Corporation
No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan
www.garmin.com
Part Number 190-00215-10 Rev. B