Objective: Be the first to seize control of your enemy's dock by landing a ship there. The docks are the corner squares marked by an anchor. Along the same lines, a player can also win by completely eliminating the enemy's fleet.
 
On a turn, a ship may sail forward, turn, or attack.
 
Ships can not sail backwards or sideways, but only in the direction their prow is facing. Nor do ships sail straight forward, but at a slight angle. A ship can move forward one space diagonally to an empty square.
 
A ship may stay within the same space and make a one quarter turn to face a different compass direction. For example: a northerly-ship may turn to face the east or west.
 
Ships attack and sink enemy ships by firing a broadside discharge of the cannons arranged along the port or starboard sides. So for a ship to attack another it must have one of its sides to the enemy. During an attack, a ship will plow through the enemy to the vacant square beyond. (e.g. captures are made by sideways, orthogonal jumps.) If a ship can attack an enemy, it is honor-bound to do so. Multiple captures are NOT possible.