advertisement
Chapter 8 - Understanding Waypoint/Route Navigation
•
•
•
From here, you can perform the following functions: select a starting waypoint or leg reverse the route start following the route
Selecting the starting point
Initially, the nearest waypoint is selected as the starting point of the route. You can press the CURSOR PAD select a different waypoint or route leg. To see a small or large area of the route, press the IN and OUT keys, respectively. If you decide not to follow this route, press the RETURN menu key to go back to the ROUTES screen.
Reversing the route
To follow the route in the opposite way of the route’s small directional arrows, press the REVERSE menu key. The direction of the route and the arrows will change from end to end.
Starting the route
To go directly to any selected waypoint in the route (the nearest one is the default), press the GO TO WAYPT menu key, then press the ENTER key. The 958 calculates a track line from your present position to the selected route waypoint.
If you want to start navigating along a route leg, rather than directly to a waypoint, select the leg by moving the cursor
958 Operator’s Manual, Rev. A Page 117
Chapter 8 - Understanding Waypoint/Route Navigation onto the leg, then press the FOLLOW LEG menu key, then press the ENTER key. In this case, your cross-track error starts at a number that’s your distance from that leg. The leg you’re currently navigating along is displayed with arrows indicating your direction of travel; other legs are displayed with fewer arrows.
Restarting the course line
When travelling from one waypoint to another, you may find you’ve gone off your planned course line. Maybe you avoided an obstacle or drifted slightly off-course. Whenever you’re off-course, you can get back by one of two methods:
•
• after passing the obstacle, you can steer your vessel back to the original course line by using the cross-track error display, and just continue to the waypoint (Course 1 below) after passing the obstacle, if you don’t have to go back to your original course line, you can go right to the next waypoint by using the 958’s restart function (Course 2 below)
Page 118
Figure 5: Restarting the course line
958 Operator’s Manual, Rev. A
958 Operator’s Manual, Rev. A
Chapter 8 - Understanding Waypoint/Route Navigation
To restart your course line from your present position, display either the NAV LOG screen (by pressing the NAV LOG key) or the CHART screen’s vessel mode (by pressing the CHART key, then the VESSEL key), then press the RESTART menu key and the ENTER key. If you’re on the chart screen, you must first press the vessel key
The 958 recalculates the course line to go from your present position directly to the next waypoint, and resets your cross-track error to zero.
Page 119
advertisement