3. AIS OPERATION
3-2
AIS symbols
Symbol
Status
Remarks
Sleeping target
Smaller triangle than an active target
Activated target
Heading line, ship speed/course vectors are dis-
played. Color is selectable on the menu.
Turning target
A turning symbol is displayed.
Dangerous target
Collision alarm symbol is displayed in red. The sym-
bol flashes until acknowledged.
Lost target
When a target is lost, a red flashing X mark is at-
tached to the symbol. The symbol disappears after
acknowledgement.
Target whose data are
being displayed.
Target selected to display its data is enclosed with a
broken square.
Real AIS track sign
—
Virtual AIS track sign
—
AIS base station
—
Airborne SAR aircraft AIS —
AIS-SART
—
AIS target without head-
ing
—
