Astern

In the water behind the vessel, or moving backwards.

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Related A-terms

Aground

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

Athwartships

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

Aboard

On, onto, or inside the vessel.

ARPA

Automatic Radar Plotting Aid — radar software that tracks targets automatically and comput…

Adrift

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

Aft

Toward, at, or behind the stern.

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