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Setting the Safe-Zone Collision Alarm
WARNING
This feature is a tool for situational awareness only and may not prevent groundings or collisions in all
circumstances. It is your obligation to ensure safe operation of your vessel.
CAUTION
The Beeper setting must be turned on to make alarms audible (System Settings, page101). Failure to set
audible alarms could lead to injury or property damage.
Before you can set a safe-zone collision alarm, you must have a compatible chartplotter connected to an AIS
device.
The safe-zone collision alarm is used only with AIS. The safe zone is used for collision avoidance, and can be
customized.
1 Select Settings > Alarms > AIS > AIS Alarm > On.
A message banner appears and an alarm sounds when an AIS-activated vessel 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.
2 Select Range.
3 Select a distance for the safe-zone radius around your vessel.
4 Select Time To.
5 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.
AIS Aids to Navigation
An AIS aid to navigation (ATON) is any kind of navigational aid that is transmitted over the AIS radio. ATONs are
displayed on the charts and have identifying information, such as position and type.
There are three main kinds of AIS ATONs. Real ATONs physically exist and send their identifying and location
information from their actual location. Synthetic ATONs physically exist, and their identifying and location
information is sent from another location. Virtual ATONs do not actually exist, and their identifying and location
information is sent from another location.
You can view AIS ATONs on the chart when the chartplotter is connected to a compatible AIS radio. To show
AIS ATONs, from a chart, select Menu > Layers > Chart > Navaid > ATONs. You can view more information
about an ATON if you select the ATON on the chart.
Charts and 3D Chart Views 19
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