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The GPS 150 will also guide you on search and rescue operations, navigating in a
ladder pattern to maximize coverage and minimize navigational planning. This is done in
reference to two waypoints, called the anchor waypoints. The first leg of the route will be
a line connecting the anchor waypoints. The increment distance is the distance between
each subsequent leg. The ladder can be created on either side of the waypoints.
To perform a search and rescue operation:
1. Create a route of ONLY two waypoints as described on page 42 or 44.
2. Press
R
and rotate
O
, if necessary, to display the Route Catalog page.
3. Rotate
K
until the 2-waypoint route to use as anchor waypoints is displayed.
4. Press
C
and rotate
K
until ‘search?’ is displayed. Press
E
.
5. Use
K
and
O
to enter the leg increment value, and R(ight) or L(eft). Press
E.
6. If you are restarting a search, rotate
O
to highlight the initial offset field, and use
K
and
O
to enter the initial offset value, and R or L.
7. Press
E
three times to accept the Search and Rescue operation values, and begin
navigation.
After activating the search and rescue, you will be informed with an ‘Offset nav in
effect’ message each time you traverse the route offset from the anchor waypoints. Upon
arrival at the destination waypoint, the leg increment will be added to your present offset,
and the route will automatically be reversed.