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