ARRANGEMENT FOR PROPULSION OF SEABORNE VESSELS, ESPECIALLY HIGH SPEED BOATS

摘要

Arrangement for propulsion of seaborne vessels, especially high speed boats, wherein a paddle wheel (1) is fitted in a closed pump house (11) and acts like a waterjet impeller. Pump house and paddle wheel are formed to make the system act like a pump, according to a combination of the centrifugal and the displacement principle. The propulsive efficiency can be optimised by controlling the vacuum in the pump house (11) with an air valve. Steering is done by small rudders (5) in the water outlet (4), changing direction of the water flow through the outlet (4). Reversing is done by reversing ducts (6) similar to the systems on ordinary waterjets.