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MarIne Mode
This section explains some of the more common operations you will perform with your GPSMAP 378/478.
To switch usage modes:
1. Press and hold the PAGE/MODE key. The Usage Mode Menu appears.
2. Use the ROCKER to select either Automotive or Marine, and press ENTER.
Marine Mode Pages
Marine Mode has ve main pages: Map, Compass, Highway, Active Route, and Position Data. An optional XM Audio Page can be enabled.
An optional Sonar Page is available when a GSD 21 is connected. See the “Setting Up and Using Sonar” section beginning on page 103 for
more information.
Map Page Compass Page Highway Page
Position Data Page Active Route Page XM Audio Page
(Optional)
GPSMAP 378/478 Owner’s Manual 13
MArIne Mode > MArIne Mode PAges