New Ship Rules

All vessels have one Upper Deck weapon mount. This may fire in all directions, except on Galley-hulled vessels where it may fire only in the Fore Arc. Armed Carracks also have one pair of Port/Starboard weapon mounts. These weapons may fire only into the Port/Starboard arc.

A weapon mount can only mount one weapon (cannon, ballista, sail cutters, etc.) per 10 tons of unmodified cargo capacity per weapon slot. Biremes/triremes may only ever mount a single weapon.