Garmin 420 사용자 매뉴얼

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Your unit has a worldwide imagery map, a built-in detailed map 

of US inland lakes, or BlueChart g2 cartography for either the US 

shoreline or a specific country.

• 

Navigation Chart—displays all relevant navigation data 

available on your preloaded maps, including buoys, lights, cables, 

depth soundings, marinas, and tide stations in an overhead view.

•  Mariner’s Eye—a bird’s eye view from above and behind 

your boat, for a visual navigation aid.

  NOTE: If you are using a GPSMAP 420/420s you must insert 

an optional BlueChart g2 Vision preprogrammed SD card to 

view detailed navigation and mariner’s eye 3D charts.

Fishing Charts and Fish Eye 3D views are available when using 

optional Blue Chart

®

 g2 Vision

™

 preprogrammed SD cards.

•  Fishing Chart—removes navigational data from the preloaded 

map, while leaving the bottom contours and depth soundings. 

(This is not available on the 430/430s/430x/430sx - all contour 

lines and depth soundings appear on the navigation chart.)

•  Fish Eye 3D—an underwater view that visually represents the 

sea floor or lake bottom according to the chart’s information.

(This is available for select lakes on 430/430s/430x/430sx 

units without an additional card.)

Use the navigation chart to plan your course, view map information, 

and as a navigational aid.

  NOTE: If using a GPSMAP 420/420s, you must insert an 

optional BlueChart g2 Vision preprogrammed SD card for your 

region to view detailed navigation charts.

To access a navigation chart, from the Home screen, select

>

.