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84 GPSMAP 188/188C Sounder Owner’s Manual
USING SONAR > SONAR PAGE
Show Pointer Option
Data Window
Pointer
To mark an underwater waypoint:
1. From the Sonar Page, press MENU, highlight Show
Pointer, and press ENTER to pause the screen movement.
2. Use the ROCKER to move the pointer onto the target, such
as underwater drop offs and stumps, you want to mark. The
data window at the top of the screen displays the pointer’s
depth, coordinates, bearing, and distance from your current
location.
3. Press ENTER/MARK. The New Waypoint Page appears
with the waypoint’s coordinates, default three-digit name,
and pointer depth automatically filled in.
4. To change the name, symbol or depth, highlight the
appropriate field and press ENTER. Make your changes
and press ENTER when finished.
5. When finished, highlight OK, and press ENTER.
6. To return to the standard Sonar Page, press QUIT; or press
MENU, highlight Hide Pointer, and press ENTER.
Show/Hide Numbers—toggles showing/hiding the data fields on
the sonar display.
Show Numbers Option
Change Numbers—allows you to specify the type of data
displayed in each data field. For detailed instructions on changing
the data fields, see page 31.