Using Fish Eye 3D - Garmin GPSMAP 546 Owner's Manual

Using Charts
Hazard Colors—Turns hazard colors on or off. The Off setting shows the
land as seen from the water. The On setting indicates shallow water and land
with a color scale. Blue indicates deep water, yellow is shallow water, and red
is very shallow water.
Range Rings—toggles the range rings on or off to provide distance
measurement.
Safe depth—adjusts the depth at which red indicates dangerous depths.
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Lane width—adjusts the width of the course line drawn when navigating.
This setting also affects routes (Route To), but does not affect automatic
guidance (guide To).
• weather Radar—turns the display of NEXRAD weather on or off. See the
GPSMAP 400/500 Series Weather Supplement for more information.

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 floor or lake bottom. Use the
Range keys to adjust the view.
NOTE: You must have an "s" series unit (such as a GPSMAP 526s) and a
transducer wired through a marine network to receive sonar information.
Fish Eye 3D Settings
To access additional settings or options for the Fish Eye 3D screen, press
MENU.
View—selects a fish eye view (fore, aft, Port, or Starboard).
Sonar Cone (only available if sonar is present)—turns a cone that shows the
area covered by your transducer on or off.
GPSMAP 400/500 Series Owner's Manual