A-hull. The situation of a vessel when she lies with all her sails furled and her helm lashed a-lee.
A-lee. The situation of the helm when it is put in the opposite direction from that in which the wind blows.
All-aback. When all the sails are aback.
All Hands. The whole crew.
All in the wind. When all the sails are shaking.
Aloft. Above the deck.
Aloof. At a distance.
Amain. Suddenly. At once.
Amidships. In the centre of the vessel; either with reference to her length or to her breadth.
Anchor. The machine by which, when dropped to the bottom, the vessel is held fast.