Garmin gpsmap 4008 User Manual

Using Charts

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 

keys (GPSMAP 4000 series) or 

the   and   keys (GPSMAP 5000 series) to adjust the view.

To access additional settings or options for the Fish Eye 3D screen, press 

Sonar Cone—turns a cone on or off that shows the area covered by your transducer.
Sonar Data—visually shows the sonar readings received by your transducer for the best 

combination of sonar and mapping. 
tracks—turns the track log on or off.
Overlay Numbers—shows or hides cruising, navigation, fishing, sailing, or fuel numbers.

Use the Fishing chart for a detailed, unobstructed view of the bottom contours and depth soundings 

on the chart.

The Fishing chart uses detailed bathymetric data on a preprogrammed BlueChart g2 Vision SD card, 

and is best for offshore deep-sea fishing.