Types and Definitions of AIS Target Symbols
Vector/Symbol Definition Remarks
Sleeping target
This symbol is displayed when received data is valid.
The direction of the triangle’s vertex indicates the
target’s bow or course.
Activated target
The heading direction is displayed with a solid line,
and the course vector is displayed with a dotted line.
The line perpendicular to the heading direction
indicates the direction to which the course is to be
changed. This line may not be displayed.
Target acquired in
automatic acquisition zone
The alarm sounds.
The alarm message (New Target) turns red and blinks.
Outline display The outlines of ships are displayed scaled down.
Numeric displayed target
When the numeric data is displayed, the target symbol
is enclosed in a square.
Dangerous target
The alarm sounds.
The alarm message (CPA/TCPA) turns red and blinks.
The symbol turns red.
Lost target
The alarm sounds.
The alarm message (Lost) turns red and blinks.
The red X mark is displayed on the AIS symbol.
Sleeping AIS-SART target
The AIS-SART symbol is same color as AIS target
symbol.
Activated AIS-SART target The target number displayed beside the symbol.
Numeric displayed
AIS-SART target
When the numeric data is displayed, the target symbol
is enclosed in a square.
Lost AIS-SART target
When the data of an AIS-SART target cannot be
received for 6 minutes, the lost target is displayed.
Note: AIS-SART function is available in the display software ver. 1.01 or later. As for method of
confirming software version, refer to section 8.3.1 " Check Performance on Test Menu ".
For details about AIS-SART, refer to section 6.6 " Display of AIS-SART ".
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