Athwartships

Running across the vessel from one side to the other, at right angles to the fore-and-aft line.

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Related A-terms

AIS-MOB

A personal AIS man-overboard beacon that, when activated (usually automatically on immersi…

Adrift

Afloat with no means of propulsion or attachment, carried along by wind, current, or tide.

Aback

A sail that has been trimmed so the wind pushes against the reverse side of the cloth, fil…

Aboard

On, onto, or inside the vessel.

AIS

Automatic Identification System — a VHF-based transponder network that continuously broadc…

Aground

The condition of a vessel whose keel or hull is in contact with the seabed.

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