4. AIS OPERATION
4-4
Note 7: Virtual AIS AtoN symbols that may appear are shown in the table below.
Symbol Meaning
Basic shape
Emergency wreck mark
North cardinal mark
East cardinal mark
South cardinal mark
West cardinal marl
Port hand mark
Starboard hand mark
Isolated danger
Safe water
Special mark
Shown in yellow dashed line
and yellow characters.
Missing
Note 8: Other AIS symbols that may appear are shown in the table below.
Symbol
Meaning
Shown in red lines
AIS SART (ACTIVE)
AIS SART (TEST)
AIS Search and Rescue (SAR) Aircraft
AIS Search and Rescue (SAR) Vessel
AIS Base station
Note 9: The CPA and TCPA of SAR aircraft data are not available and are
shown as ***.
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