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GPSMAP 400/500 Series Owner’s Manual 55
Conguring the Chartplotter
AIS Alarm—create a safe zone around your boat for collision
avoidance. The zone can be customized.
To customize safe-zone settings:
From the Home screen, select Congure > Other Vessels > AIS
Alarm.
Range—change the measured radius of the safe-zone ring to
a specied distance from 500 ft. to 2.0 nm (or from 150 m to
3.0 km, or from 500 ft. to 2.0 mi).
Time to (Safe Zone)—sounds an alarm if AIS or MARPA
determines that a target will intersect the safe zone within the
dened time interval (from 1 to 24 minutes).
AIS Alarm—when On is selected, a message is displayed
(“AIS: Dangerous Target”) when a vessel enters the safe
zone. When Off is selected, the message will not be
displayed.
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