Garmin GPSMAP 421s 010-00764-01 Manuale Utente

Viewing Information

3.  Select 

 > 

 > 

> 

.

A message banner appears and an alarm sounds when an AIS-

activated vessel enters the safe-zone ring around your boat. The 

object is also labeled as dangerous on the screen. The Off setting 

disables the message banner and the audible alarm, but the object 

is still labeled as dangerous on the screen.

4.  Select

to set the measured radius of the safe-zone ring to 

a specified distance from 500 ft. to 2.0 nm (or from 150 m to 3.0 

km, or from 500 ft. to 2.0 mi.). 

5.  Select a distance.
6.  Select 

 to sound an alarm if AIS determines that a 

target will intersect the safe zone within the defined time interval 

(ranging from 1 to 24 minutes). 

7.  Select a time.
Viewing a List of AIS Targets

NOTE: Mariner’s Eye 3D charts and Fish Eye 3D charts are 

available only if you use a BlueChart g2 Vision SD card. Fishing 

charts are available if you use a BlueChart g2 Vision SD card or if 

your built-in map supports Fishing charts.

The AIS target list shows information about all of the boats your 

unit is monitoring. The AIS list shows the MMSIs or (if the boat is 

broadcasting it) names of the AIS boats and is sorted by range. The 

boat nearest to your boat appears at the top of the list.

1.  From the Home screen, select 

.

2.  Select 

, 

, 

, or 

.

3.  Select 

 > 

> 

.

See “Calling an AIS Target” (

).