Garmin gpsmap 4008 User Manual

Using Charts

A BlueChart g2 Vision SD card offers Mariner’s Eye 3D, which provides a detailed three- 

dimensional 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 

beneficial when trying to identify entry and exit routes in unfamiliar harbors or anchorages.

Press the 

key (GPSMAP 4000 series) or touch the   key (GPSMAP 5000 series) to 

move the view closer to your boat and lower to the water. Press the 

 key (GPSMAP 4000 

series) or touch the   key (GPSMAP 5000 series) to move the view away from the boat. 

To access additional settings or options from the Mariner’s Eye 3D screen, press 

.

Colors—selects between 

 (Default), 

, and 

. The 

 setting 

shows the land as seen from the water. The 

 setting indicates shallow water and land 

with a color scale. Blue indicates deep water, yellow is shallow water, and red is very shallow. The 

setting indicates land in green and brown, and the 

 setting shows land as 

dark red.

Safe Depth—adjusts the depth at which red indicates shallow water. This also changes the global 

Safe Depth setting as it applies to the Auto Guidance feature.
Rings, tracks, Lane Width, and Show Radar—see “Mariner’s Eye Settings” on