Patent ID: 8814496
Filing Date: 2014-08-26
Classification: B63H,F01D

Abstract:
1. A device for reducing the drive power requirement of a watercraft comprising a fore-nozzle, wherein at least one outer fin projects outwards from the fore-nozzle, said outer fin comprising a first end and a second end, wherein said first end of said outer fin is fastened to the fore-nozzle in such a way that the first end of the outer fin is fastened to the outer wall surface of the fore-nozzle or that the first end of the outer fin rests inside the wall of the fore-nozzle, wherein said second end of the outer fin is configured as a free end, wherein only the first end of the outer fin is fastened and the remaining region of the outer fin is free-standing and wherein the outer fin is not fastened to a propeller hub.