- published: 08 Oct 2013
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A personal water craft (PWC), also called water scooter, is a recreational watercraft that the rider rides or stands on, rather than inside of, as in a boat.
These have an inboard engine driving a pump jet that has a screw-shaped impeller to create thrust for propulsion and steering. They are often referred by the trademarked brand names Jet Ski, WaveRunner, or Sea-Doo. There are a wide variety of "jet boats" many of which exceed 30-40' in length. The Coast Guard defines a personal watercraft, amongst other criteria, as a jet drive boat less than 13' in length, in order to exclude from that definition, more conventional sized jet boats. Most are designed for two or three people, though four-passenger models exist.
The invention of both major types of personal water craft, the stand-up and sit-down models, is credited to Clayton Jacobson II of Lake Havasu City, Arizona, USA, originally a motocross enthusiast. Jacobson's idea was designed in the mid-1960s, powered by an internal pump-jet rather than an outboard motor, made of all aluminum, and had a fixed, upright handle. Jacobson eventually quit his job in banking to devote himself to developing the idea, and had a working prototype by 1965. It differed slightly from modern personal watercraft but had definite similarities. He completed a second prototype a year later made of fiberglass.