Garmin GPSMAP 12X3, Owner'S Manual

Page: 49 / 212

Setting the Safe-Zone Collision Alarm
CAUTION
The Beeper setting must be turned on to make alarms audible ( Sounds and Display Settings, page 166 ). Failure
to set audible alarms could lead to injury or property damage.
Before you can set a collision alarm, you must connect an AIS device to the same network as a compatible
chartplotter.
The safe-zone collision alarm is used for AIS vessels. When a radar is connected to the same network, you can
also use the safe-zone collision alarm for MARPA targets. The safe zone is used for collision avoidance and can
be customized.
1 Select Settings > Alarms > Collision Alarm > On.
A message banner appears and an alarm sounds when an AIS-activated vessel enters the safe-zone area
around your boat. The vessel is also labeled as dangerous on the screen. When the alarm is off, the message
banner and audible alarm are disabled, but the vessel is still labeled as dangerous on the screen.
2 Select Range, and select a distance for the safe-zone radius around your vessel.
3 Select Time To, and select a time at which the alarm will sound if a target is determined to intersect the safe
zone.
For example, to be notified of a pending intersection 10 minutes before it will likely occur, set Time To to 10,
and the alarm will sound 10 minutes before the vessel intersects the safe zone.
4 Select MARPA Alarm, and select an option for when the alarm sounds for MARPA-tagged objects.
A message banner appears and an alarm sounds when a MARPA-tagged object enters the safe-zone area
around your boat. The object is also labeled as dangerous on the screen. When the alarm is off, the message
banner and audible alarm are disabled, but the object is still labeled as dangerous on the screen.
Viewing a List of AIS Threats
1 Select Info > Other Vessels > AIS List.
2 If necessary, select Display Options to sort or filter the items in the list.
Charts and 3D Chart Views 35