Web page 119 of the DMG has stats for airborne and waterborne automobiles. They often have a number of a whole lot of hit factors.
Nonetheless, isn’t a ship a large object? If it had been, it could be topic to the foundations regarding objects on pages 246-247. The foundations for Big and Gargantuan objects state that:
[…] That stated, one torch can burn a Big tapestry, and an earthquake spell can scale back a colossus to rubble. You’ll be able to monitor a Big or Gargantuan object’s hit factors should you like, or you may merely resolve how lengthy the thing can face up to no matter weapon or power is appearing in opposition to it. When you monitor hit factors for the thing, divide it into Giant or smaller sections, and monitor every part’s hit factors individually. Destroying a type of sections might smash your complete object. For instance, a Gargantuan statue of a human may topple over when considered one of its Giant legs is diminished to zero hit factors.
So would a ship not work equally?
1. Does a ship sink solely when it reaches zero HP? The counter argument is the one about smaller sections of a large object, if a large gap is made within the hull of a ship, one which’s too large to patch up, then absolutely it can sink.
2. If a ship has HP and AC, does it rely as a creature for the usage of spells? Loads of spells in 5e D&D don’t injury objects: fireballs and lightning bolts solely mild objects on fireplace, so can a ship rely as a creature?
3. Are you able to goal a selected sub-section of a ship? That is linked to query 1, might a mage casting a robust spell, or somebody wielding a siege weapon, …truly intention for a delicate level on a ship, and destroy that one sub-section.
My cause for asking that is that spells like meteor swarm, on common, do round 160 injury (I consider it additionally applies to things). This isn’t sufficient to destroy most ships (honest sufficient, the blast is simply too small), however absolutely it might destroy sufficient of the hull to sink most vessels, no?