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GPSMAP 188/188C Sounder Owner’s Manual 51
MAIN MENU > POINTS TAB
To delete waypoints by symbol:
1. From the User sub tab, highlight the waypoint to delete, and
press MENU. Select Delete By Symbol, and press ENTER.
2. Use the ROCKER to highlight the symbol of the waypoint(s)
to delete, and press ENTER.
3. Press ENTER to confirm. To stop the deletion, choose
Cancel, or press QUIT.
To delete all waypoints or the entire waypoint list:
1. Press MENU to select the options window.
2. Use the ROCKER to highlight Delete All, and press
ENTER.
3. Highlight OK, and press ENTER to confirm.
Proximity Waypoint List
The Proximity list allows you to define an alarm circle around a
stored waypoint location, and can be used to help you avoid reefs,
rocks, or restricted waters. Up to 10 waypoints can 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 appears. Because the unit only alerts for one of the
overlap points, use caution when navigating in these areas. If you
enter an alarm circle overlap, you are only alerted to the closest
proximity waypoint.