Activating A Target For An Ais Vessel; Viewing A List Of Ais Threats; Setting The Safe-Zone Collision Alarm; Ais Distress Signals - Garmin ECHOMAP Ultra 122sv Owner's Manual

Activating a Target for an AIS Vessel

1 From a chart or a 3D chart view, select an AIS vessel.
2
Select AIS Vessel > Activate Target.
Viewing Information about a Targeted AIS Vessel
You can view the AIS signal status, MMSI, GPS speed, GPS
heading, and other information that is reported about a targeted
AIS vessel.
1
From a chart or a 3D chart view, select an AIS vessel.
2
Select AIS Vessel.
Deactivating a Target for an AIS Vessel
1
From a chart or a 3D chart view, select an AIS vessel.
2
Select AIS Vessel > Deactivate Target.

Viewing a List of AIS Threats

From a chart or 3D chart view, select Menu > Other Vessels
> AIS List.

Setting the Safe-Zone Collision Alarm

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 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.
Transmission test. Appears when a vessel initiates a test of
their distress signal device, and does not represent a true
emergency.
Transmission test lost.
Charts and 3D Chart Views
Enabling AIS Transmission Test Alerts
To avoid a large number of test alerts and symbols in crowded
areas such as marinas, you can select to receive or ignore AIS
test messages. To test an AIS emergency device, you must
enable the chartplotter to receive test alerts.
1
Select Settings > Alarms > AIS.
2
Select an option:
• To receive or ignore Emergency Position Indicating Radio
Beacon (EPRIB) test signals, select AIS-EPIRB Test.
• To receive or ignore Man Overboard (MOB) test signals,
select AIS-MOB Test.
• To receive or ignore Search and Rescue Transponder
(SART) test signals, select AIS-SART Test.

Turning Off AIS Reception

AIS signal reception is turned on by default.
Select Settings > Other Vessels > AIS > Off.
All AIS functionality on all charts and 3D chart views is
disabled. This includes AIS vessel targeting and tracking,
collision alarms that result from AIS vessel targeting and
tracking, and the display of information about AIS vessels.

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.
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
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
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