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GPSMAP 4000 Series Owner’s Manual 11
uSInG chartS
usInG
charts
Using Mariner’s Eye
Mariner’s Eye provides a view from above and behind the boat (according to your course), and
provides a visual navigation aid. This view is helpful when navigating tricky shoals, reefs, bridges,
or channels, and is benecial when trying to identify entry and exit routes in unfamiliar harbors or
anchorages.
To access the Mariner’s Eye screen, from the Home screen, select Charts > Mariner’s Eye.
Mariner’s Eye
Navigation Chart
The RANGE (+) key moves the view closer to your boat and lower to the water, while the RANGE
(-) key moves the view away from the boat. This is indicated by the scale ( ) at the bottom of
the screen.