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16 GPSMAP 4000 Series Owner’s Manual
uSInG chartS
usInG
charts
Using Fish Eye 3D
Using the depth contour lines of the BlueChart g2 Vision cartography, Fish Eye 3D provides an
underwater view of the sea oor or lake bottom. The RANGE keys adjust the view in the same way
as the Mariner’s Eye 3D.
Fish Eye 3D
Fish Eye 3D Settings
To access additional settings or options for the Fish Eye 3D screen, press MENU.
Sonar Cone—turn a cone on or off that shows the area covered by your transducer.
Tracks—turn the track log on or off.
Overlay Numbers—show or hide cruising, navigation, or shing numbers just as on the navigation
chart (page 8).
Using Fishing Charts
Use the shing chart for a detailed, unobstructed view of the bottom contours and depth soundings
on the chart.
Fishing Chart Navigation Chart
The shing chart uses detailed bathymetric data on on a preprogrammed BlueChart g2 Vision SD
card, and is best for offshore deep-sea shing.