Message
Class
Description
ALR
No.
AIS Alarm 029
Alarm
no valid SOG information
AIS Alarm 030
Alarm
no valid COG information
AIS Alarm 032
Alarm
Heading lost/invalid
AIS Alarm 035
Alarm
no valid ROT information
AIS MAX Target INFO Maximum number of AIS targets.
AIS PROC (Data) Alarm AIS processing circuit: No communication or communication error. 328
CPA/TCPA Alarm There is a dangerous target. 301
Lost Alarm
Failure in tracking the target that has been under tracking.
Failure in receiving AIS target data for a specified time.
New Target Alarm
Acquisition or activation of a target in the automatic acquisition /
activation zone.
302
RADAR Alarm (In) Alarm Targets have entered the radar alarm range.
RADAR Alarm (Out) Alarm Targets have left the radar alarm range.
REF Target Alarm Decrease in the reference target accuracy.
Trial Warning There is a dangerous target, when trial maneuver is active.
TT (Boot) Alarm Target tracking unit start failure. 344
TT (Data) Alarm The target tracking unit is malfunctioning.. 323
TT 95% Capacity
INFO
Over 95% of the maximum number of targets to be tracked.
TT MAX Target
INFO
The maximum number of targets is under acquisition.
ALR No : Unique alarm number in ALR sentence and ACK sentence.
5-45
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