Aground

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

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Related A-terms

Autopilot

An electronic self-steering system that uses a heading or GPS input to drive a hydraulic r…

Alternator

An engine-driven generator that converts mechanical rotation into alternating current, whi…

ARPA

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

Amidships

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

Athwartships

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

Aft

Toward, at, or behind the stern.

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