Owner's Manual
26 GPSMAP 400/500 Series Owner’s Manual
Using Charts
Setting the Safe-zone Collision Alarm
The safe-zone collision alarm can be used with AIS. The safe zone
is used for collision avoidance, and can be customized. All safe-zone
collision alarm settings are applied to all charts.
1. From the Home screen, select Congure > Other Vessels > AIS
Alarm > On.
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.
2. Select Range to set 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.).
3. Select a distance.
4. Select Time To to sound an alarm if AIS determines that a
target will intersect the safe zone within the dened time interval
(ranging from 1 to 24 minutes).
5. Select a time.
Viewing a List of AIS Threats
: The Fishing chart and Mariner’s Eye 3D are available with a
preprogrammed BlueChart g2 Vision data card.
1. From the Home screen, select Charts.
2. Select Navigation Chart, Fishing Chart, Perspective 3D, or
Mariner’s Eye 3D.
3. Select MENU > Other Vessels > AIS List.