Aback. A sail is aback when the wind blows on the forward part tending to move the vessel astern.

Abaft. Behind, towards the stern.

Abeam.
Abreast.
}See "Bearing."

Aft. See "Bearing."

Ahead. See "Bearing."

Astern. See "Bearing."

Beam. The width of a vessel, so used because of the cross timbers, called beams.

Bear, to. To be in a specified direction from a vessel.

Bear, to. To change the direction of a vessel's movement.

To bear down, to move towards; to bear up, or away, to move away, from the wind or from an enemy.