Viewing A List Of Ais And Marpa Threats; Ais Aids To Navigation; Ais Distress Signals - Garmin Volvo Penta GLASS COCKPIT 8x10 Owner's Manual

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.

Viewing a List of AIS and MARPA Threats

From any Radar screen or the Radar overlay, you can
view and customize the appearance of a list of AIS and
MARPA threats.
1 From a Radar screen, select Options > Layers >
Other Vessels.
2 Select an option:
• To view a list of AIS threats, select AIS > AIS List.
• To view a list of MARPA threats, select MARPA >
MARPA List.
3 If necessary, select Display Options > Show, and
select the type of threats to include in the list.

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 Options >
Layers > Chart > Navaid > ATONs. You can view more
information about an ATON if you select the ATON on the
chart.
Symbol Meaning
Real or synthetic ATON
Real or synthetic ATON: Topmark North
Real or synthetic ATON: Topmark South
Real or synthetic ATON: Topmark East
Real or synthetic ATON: Topmark West
Real or synthetic ATON: Topmark Special
Charts and 3D Chart Views
Symbol Meaning
Real or synthetic ATON: Topmark Safe
Real or synthetic ATON: Topmark Danger
Virtual ATON
Virtual ATON: Topmark North
Virtual ATON: Topmark South
Virtual ATON: Topmark East
Virtual ATON: Topmark West
Virtual ATON: Topmark Special
Virtual ATON: Topmark Safe
Virtual ATON: Topmark Danger

AIS Distress Signals

Self-contained AIS distress signal devices transmit
emergency position reports when activated. The
chartplotter can receive signals from Search and Rescue
Transmitters (SART), Emergency Position Indicating
Radio Beacons (EPIRB), and other man overboard
signals. Distress signal transmissions are different than
standard AIS transmissions, so they appear differently
on the chartplotter. Instead of tracking a distress signal
transmission for collision avoidance, you track a distress
signal transmission to locate and assist a vessel or
person.
Navigating to a Distress Signal Transmission
When you receive a distress signal transmission, a
distress signal alarm appears.
Select Review > Go To to begin navigation to the
transmission.
AIS Distress Signal Device Targeting Symbols
Symbol Description
AIS distress signal device transmission. Select
to see more information about the transmission
and begin navigation.
Transmission lost.
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