Airship Interceptor

Hull:

Armor Class: 13

Hit Points: 350 (Threshold 20)

Engines (2):

Armor Class: 16

Hit Points: 85 each. -50ft. movement speed per engine destroyed.

If both engines are destroyed, the ship crashes

On its turn, the airship can use its helm to move using its elemental engine. It can also fire its ballista. If it has half its crew or fewer, it can fire only two of the ballista. It can also fire a harpoon gun instead of a ballista.

Ballista (4):  Armor class 15, Hit Points 50 each. Ranged Weapon Attack: +6 to hit, range 120/480 ft., one target. Hit: 16 (3d10) piercing damage.

Harpoon Gun (4): Armor Class 15, Hit Points 50 each. Ranged Weapon Attack: +8 to hit, range 120/480 ft., one target. Hit: 11 (2d10) piercing damage, and the target is grappled (escape DC 16). Until the grapple ends, the target's speed is halved, and it can't move farther away from the Flag Airship. Each of the Flag Airship's harpoon guns can grapple one target. While it has one or more targets grappled with its harpoon gun attack, the Flag Airship's speed is not halved.

Control: Helm: Armor Class 16, Hit Points 50.  Move up to the speed of its elemental engine, with one
90-degree turn. If the helm is destroyed, the airship can’t turn.