Brig Battleship

Damage Threshold. [18] Minimum Damage is needed to affect the ship's health.

Halting. requires no skill checks to perform. When you halt a ship, it stops sailing, and will drift 100 feet in the direction it is facing each turn. You can restart a vessel’s movement by making the same skill checks required for turning (see below)

Turning. Alters the course of the ship. During your turn, you may turn a ship one point in either direction (a point here refers to one of eight directions; up, down, left, right, and the diagonal directions between each). Two successes on any combination of the following checks are required to turn the ship: Strength (Athletics) and/or Dexterity (Acrobatics). These represent the characters tying off sheets, cutting sails, and commanding the helm

Ram. Melee Weapon Attack: +5, 50 ft., Hit: STR (6d10 + STR) [bludgeoning] damage. 

Large Cannon. RangedWeapon Attack: +5 to attack, range 500 ft., damage 5d10. Recharge every two rounds.

Swivel. Ranged Weapon Attack: +2 to attack, range 100 ft., damage 2d6. This damage ignores the vessel's DT. To make an attack with a swivel, a character must make a Crossbow attack against the target vessel’s AC.

Arcane Ballista is a massive crossbow that channels magical power. It has a range of 400 ft. and deals 3d10 force damage on a hit. To make an attack with an Arcane Ballista, a character rolls Intelligence (Arcana) against the target vessel’s AC.