Marine Jet

Jacuzzi 12YJ, a jet propulsion system developed by Jacuzzi Brothers, Inc. for pleasure and commercial boating, is a technical advance in that it offers very high propulsive thrust in relation to power output. Powered by conventional marine engine, it operates similar to an airplane jet engine, except that it uses water rather than air as the propulsive medium. Turbine pump takes in water through an intake grill in the bottom of the boat and expels it at high velocity through the stern nozzle creating a powerful propulsive thrust. System offers exceptional control and maneuverability whether at a docking speed or wide open throttle. 12YJ is one of a number of jacuzzi jets used to power a variety of marine craft from small pleasure boats to Navy combat vessels.

Full article: http://hdl.handle.net/hdl:2060/20070018875