Orientation (Glossary Resource)

aft (or abaft)
At, in, toward, or close to the rear of the ship

amidship (or amidships)
The middle of a ship.

broadside
A general term for the vantage on another ship of absolute perpendicular to the direction it is going. To get along broadside a ship was to take it at a very vulnerable angle. This is of course, the largest dimension of a ship and is easiest to attack with larger arms. A "Broadside" has come to indicate a hit with a cannon or similar attack right in the main part of the ship.

heel (also list)
When a ship leans to one side or the measurement of it’s tilt.

lee
The side away from the direction from which the wind blows.

list
To lean or cause to lean to the side.

port
(1) A seaport. (2) The left side of the ship when you are facing toward her prow.

starboard
The right side of the ship when you are facing toward her prow.

tack
(1) The lower forward corner of a fore-and-aft sail. (2) The position of a vessel relative to the trim of its sails or the act of changing from one position or direction to another.