Garmin 521 User Manual

Where To?

BlueChart g2 Vision data cards are not waterproof. When you are 

not using the card, keep it in the original packaging for safekeeping 

and store it away from exposure to sun and rain to prevent damage 

to the card.
BlueChart g2 Vision data cards are susceptible to damage from 

static electricity. In low-humidity environments, you should ground 

yourself on a large metal object before handling the card to prevent 

damage to the card.
Optional BlueChart g2 Vision preprogrammed SD cards allow 

you to get the most out of your unit. In addition to detailed marine 

charting, BlueChart g2 Vision has the following features:

Mariner’s Eye 3d—provides a view from above and behind the 

boat for a three-dimensional navigation aid. The BlueChart g2 

Vision Mariner’s Eye 3D is more detailed than the preloaded data 

page 15)

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fish Eye 3d—provides an underwater 3D view that visually 

represents the sea floor according to the information on the chart.
fishing Charts—provides a view of the chart with enhanced 

bottom contours and without navigational data. This chart works 

well for offshore deep-sea fishing.

High Resolution Satellite imagery—provides high-resolution 

satellite images for a realistic view of the land and water on the 

Navigation chart.
aerial Photos—provides a view of marinas and other 

navigationally significant aerial photos to help you visualize your 

surroundings.
detailed Roads and POi data—provides a view of roads, 

restaurants, and other points of interest (POIs) along the shore. 
Current data—provides a view of current-station information 

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auto guidance—uses the chart data and specified boat-safe 

page 49)

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NOTE: You cannot transfer BlueChart g2 Vision data from the SD 

card to your computer for backup or viewing purposes. You can only 

use the SD card on BlueChart g2 Vision-compatible Garmin GPS 

units.

When you start any type of navigation (go To, Route To, guide 

To, or follow Track), if you are connected to a compatible Garmin 

autopilot, you are prompted to engage the autopilot.