Adrift

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

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Related A-terms

Amidships

At or toward the middle of the vessel, whether fore-and-aft or athwartships.

Abeam

Lying on a line perpendicular to the vessel's centerline — directly off her side.

ARPA

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

Apparent wind

The wind actually experienced on board, produced by combining the true wind with the wind …

Aground

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

Aboard

On, onto, or inside the vessel.

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