Filter
Top Products
5. AIS Operation
5-4
5.4 AIS Symbols
When the AIS is turned on, AIS targets are marked with appropriate AIS symbol as below.
SYMBOL STATUS REMARKS
Activated
target
ROT higher
than preset
ROT
Dangerous
target
Lost target
Target selected
for data display
All AIS symbols shown with thick line.
Color is selectable from menu.
Displayed for turning ship.
Displayed when CPA/TCPA is within
CPA/TCPA LIMIT. Red in color. Flashing
until acknowledged..
A
“X” overlaid on a lost target. Red in
color. Erased after acknowledged.
Broken square is overlaid on target
selected to display its data. A, B or C
shown to indicate data box location (at
the right side of the screen).
+
+
Real AtoN
Virtual AtoN
Base Station
Airborne SAR aircraft
AIS symbols
Note 1: The equipment continues to process AIS targets when the AIS feature is switched off. When the AIS is
again turned on, symbols are immediately displayed.
Note 2: AIS symbols are momentarily erased after the screen is redrawn when the heading is changed from the
Head-up mode.
Note 3: When no AIS data is received, the message "AIS receive error" appears in the text window. Check the AIS
transponder.