A quasi-real ship appears on the surface of the water in an unoccupied space of your choice within range. You decide the ship's appearance. Any objects created by the spell as part of the ship vanishes in a puff of smoke if it is carried more than 10 feet away from the ship.

The ship is a Gargantuan force with an AC of 15 and 500 hit points, can carry up to 150 tons of creature and cargo, has a speed on the water of 50 feet (5 miles an hour), requiring no crew to steer or man it. Its speed increases to 60 feet (6 miles an hour) if it is sailing with the wind, and decreases to 30 feet (3 miles an hour) if it is sailing into the wind. You can command the ship to move, change directions, or stop as a bonus action on your turn. Otherwise, it maintains its previous bearing, moving at the end of your turn.

As an action before the spell ends, you can command the ship to unleash a volley of ethereal cannon fire in a 300-foot-long, 40-foot-wide line. Each creature in the line must succeed on a Dexterity saving throw or take 8d10 force damage. You can make this attack three times, after which the ship runs out of ammo and becomes incapable of firing its cannons in this way again.

When the spell ends, the ship gradually fades over the course of 10 minutes, allowing creatures on board to disembark and offload any objects placed onto it. The spell ends early if you dismiss it as an action or if the ship is reduced to 0 hit points.