Landboat (5e Equipment)
From D&D Wiki
The landboat is an uncommon vehicle, though it can often be seen in large cities. It can move over water or any solid surface, regardless of the terrain difficulty. However, it can only hover up to 10 ft. above the ground. It cannot move over objects any higher than this, and it can only pass over canyons deeper than 10 ft. if they have a width of 15 ft. or less. The landboat can carry up to 10,000 lbs. In order for it to move, the landboat must have one driver. Additionally, it carries a magical cannon and a minor cannon, which must have an additional crew member (gunner) in order to work. The landboat is completely ineffective if somebody uses dispel magic on it.
Armor Class: 17
Magical Cannon. Ranged Weapon Attack: +6 to hit, one target. Hit: 15 (6d4 + 2) force damage.
Minor Cannon. Ranged Weapon Attack: +5 to hit, one target. Hit: 7 (2d4 + 2) force damage.
Ram. As an action, you can move through the spaces of Large or smaller creatures for the remainder of the turn. Whenever you move through a creature's space, that creature must make a DC 15 Dexterity saving throw. On a failed save, the creature takes 3d8 bludgeoning damage and is flung 20 feet directly away from the landboat. On a successful save, a creature takes half as much damage and is only moved 5 feet.