Definitions for "Personal watercraft"
(1) A small class A-1 or A-2 vessel which uses an outboard motor, or an inboard motor powering a water jet pump, as its primary source of motive power and which is designed to be operated by a person sitting, standing, or kneeling on, or being towed behind the vessel, rather than in the conventional manner of sitting or standing inside the vessel. (2) Craft less than 13 feet in length designed to be operated by a person or persons sitting, standing, or kneeling on the craft rather than within the confines of a hull.
a boat, and you're the captain
a Class A inboard motorboat
Official terminology for jetskis.