18. TT AND AIS DISPLAYS
18.2
AIS Display
18.2.1
AIS symbols
The table below shows all the AIS symbols that appear on the chart.
Symbol
Default Color
Green
Green
Green
ABC
Green
Red (fixed)
Green
Green
Green
Green
Green
Green
Green
ABC
Red (fixed)
ABC
18-6
Name
AIS tracked target
Marks a past position of an AIS target.
past position point
Sleeping AIS target Denote sleeping AIS symbol. (Lines are thin-
ner than Active AIS symbol.)
Activated AIS
Denote active AIS target, with vector (Lines
target
are thicker than sleeping AIS symbol.) Vessel
name is shown (default setting).
Activated target,
Active AIS target with symbol shown in true
true scale symbol
scale.
Dangerous AIS
Target's CPA and TCPA are within the CPA
target
and TCPA settings. Vector shown.
Heading-turn
Shows target's direction of turning.
indicator
AIS ATON
Aids to navigation
Virtual AIS ATON
Denote virtual AIS
SAR-AIRCRAFT
AIS base station
AIS SART
AIS select symbol
Target selected to display its data.
AIS lost symbol
X is superimposed on the AIS target symbol
and is flashing.
Description