Arcturius' Amazing Airship

You create an airship that appears within 300 ft of you. The airship has 500 hit points. The airship is dimensions 50ft by 150ft, and contains 2 floors aside from the main deck.The ship is large enough to hold 20 crew members. The airship has either one large balloon, or two smaller ones. The airship also has 2 medium propellers on either side, or one large propeller on the back. The ship can appear in any color of wood and metal ornamentation, as well the flags and ornaments that adorn the ship can be whatever the caster wishes. The ship is stocked with supplies, and invisible servants take care of the upkeep and general tasks with flying the ship. The caster can think of a location for the ship to take them to, and the ship will pilot itself there. Any crew aboard the ship may also manually control it at the wheel. The ship is fitted with 10 cannons, five on each side. Any materials or supplies that are taken off of the ship disappears as it leaves. The ship and everything on it aside from the crew and their possessions, disappears when the spell ends.