Garmin 531 Guida Utente

Using Charts

When course over ground, heading, and rate of turn information 

are provided by an activated AIS target, the projected course of the 

target is calculated based on the course over ground and the rate of 

turn information. The direction in which the target is turning, which 

is also based on the rate of turn information, is indicated by the 

direction of the barb at the end of the heading line. The length of the 

barb does not change.

When course over ground and heading information are provided by 

an activated AIS target, but rate of turn information is not provided, 

the projected course of the target is calculated based on the course 

over ground information. 

AIS requires the use of an external AIS device and active 

transponder signals from other vessels.
You can configure how other vessels appear on a chart or on a 3D 

chart view. The display range configured for one chart or one 3D 

chart view are applied only to that chart or to that 3D chart view. 

The details, projected heading, and trails settings configured for one 

chart or one 3D chart view are applied to all charts and to all 3D 

chart views. 
NOTE: The Fishing chart and Mariner’s Eye 3D are available with a 

preprogrammed BlueChart g2 Vision data card.

1.  From the Home screen, select 

.