14. AIS, DSC MESSAGE
14-2
Note: This unit is equipped with the Blue Force Tracking (BFT) function.
Other AIS symbols that may appear are shown in the table below.
Lost AIS
target
An AIS target becomes a lost
target if a signal is not received
from the AIS target for x* min-
utes. The lost target symbol is
erased if a signal is not re-
ceived for an additional x* min-
utes.
*: The time depends on the AIS
transponder. Check the opera-
tor’s manual for your AIS tran-
sponder for information about
lost targets.
No CPA/
TCPA
target
AIS symbols are shown in bro-
ken lines in the following cas-
es:?
• No water or ground tracking
speed of your ship, or there
is no speed data. All AIS
symbols are shown in broken
lines.
• No speed data from AIS tar-
get. The symbol of the corre-
sponding AIS target is shown
in broken lines. A target with
neither a reported heading
nor COG is oriented toward
the top of the operational dis-
play area.
Symbol Meaning
AtoN
Base Station
Aircraft
SART
Target
type
Symbol Description
Color
- AIS target: Blue for the Class A AIS
: Green for the Class B AIS
Color: Blue for the Class A AIS
: Green for the Class B AIS
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