Ais; Ais Target Symbols - Lowrance ELITE Ti Operator's Manual

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AIS

Any AIS or NMEA 0183 VHF that can do AIS can be used by the
ELITE-5Ti, if the AIS receiver can send and receive at the same NMEA
0183 baud rate. The ELITE-7Ti can use any NMEA 2000 or NMEA
0183 AIS device.
AIS targets can be displayed as overlay on chart images, making this
feature an important tool for safe travelling and collision avoidance.
You can set alarms to notify you if an AIS target gets too close or if
the target is lost.

AIS target symbols

The system uses the AIS target symbols shown below:
Sleeping AIS target (not moving or at anchor).
Moving and safe AIS target with course extension line.
Dangerous AIS target, illustrated with bold line.
A target is defined as dangerous based on the CPA and
TCPA settings. Refer to "Defining dangerous vessels" on page
104.
AIS | ELITE Ti Operator Manual