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A mark for an automatic identification transmitter.
Also known as: Automatic identification system symbol, AIS aid to navigation symbol
On a nautical chart an AIS mark shows that an aid to navigation transmits its identity and position over the automatic identification system.
Marks an aid to navigation transmitting over the automatic identification system.
Contexts: Navigation
Can be transmitted for an aid that does not physically exist, a virtual mark shown on a screen with nothing in the water, which is why the chart records the transmission separately from the object.
Contexts: Navigation
A small marked circle at the aid with a lettered abbreviation identifying the transmission.