Adrift
Loose from moorings (applied to anything lost, out of hand, or left lying about)
AFT
Near or toward the stern of the vessel
All hands/ Muster/ Quarters
Assembly of all hands for accountability
Avast/ Belay
To cancel an order. to cease
Aye Aye
Reply to an order (I understand and will comply)
Barracks
Building where military personnel live
Below
Beneath the deck (downstairs)
Bow
The front of the ship