What is Pump-jet?
[[Image:Pump_jet.PNG|thumb|right|300px|Typical '[[Personal water craft|jet ski]]' pump jet]] A '''pump-jet''' or '''water jet''' is a [[ocean|marine]] system that creates a jet of [[water]] for [[propulsion]]. The mechanical arrangement may be a [[propeller]] with [[nozzle]], or a centrifugal [[pump]] and nozzle. Pump jets have some advantages over bare propellers for certain applications, usually related to requirements for high-speed. == Other websites == * [http://www.pwia.org/ Personal Watercraft Industry Association] * [http://www.awahq.com/ American Watercraft Association] {{Webarchive|url=https://web.archive.org/web/20080828115152/http://www.awahq.com/ |date=2008-08-28 }} * [http://www.uscgboating.org/ U.S. Coast Guard Boating Safety] {{science-stub}} [[Category:Engineering]]