Garmin gpsmap 4008 User Manual

Using Charts

Your unit has a basic worldwide imagery map. By purchasing an optional Blue Chart

®

 g2 Vision™ 

preprogrammed SD card, you can view detailed information for your region, including:

Navigation Chart—displays navigation data, including buoys, lights, cables, depth soundings, 

marinas, and tide stations in an overhead view.
Mariner’s Eye and Mariner’s Eye 3D—displays a view from above and behind your boat for a 

visual navigation aid.
Fishing Chart—removes navigational data from the chart and enhances bottom contours for 

depth recognition.
Fish Eye 3D—an underwater view that visually represents the sea floor according to the 

information on the chart. 

The unit automatically shows relevant navigational data when you select a navigation option.

Use the Navigation Chart to plan your course, to view map information, and as a navigational aid.

To access the Navigation Chart, from the Home screen, select 

 > 

.

The 

 keys (GPSMAP 4000 series) or the   and   keys (GPSMAP 5000 series) 

control the zoom level, indicated by the scale at the bottom of the navigation chart (

). The 

bar under the number represents that distance on the map.

To access additional settings or options for the Navigation chart, press or touch 

.

Overlay Numbers—show or hide cruising, navigation, fishing, and sailing numbers on the screen. 
Chart Setup—customize the Navigation chart.

BlueChart g2 and BlueChart g2 Vision charts use graphic symbols to denote map features, which 

follow the standards for US and international charts.

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