Patent for a new and improved hydraulic propulsion. This design "is to provide an improved means for the application of the jet principle in the hydraulic propulsion of vessels; and it consists in the combination, with the hull of the vessel, of one or more main or trunk tubes arranged longitudinally to the vessel and of tapering shape, largest at its front end, which is open, and provided along its length with a series of nozzles opening along the side of the vessel in rearward direction, and one or more propeller-wheels arranged within the main tube and adapted to suck water in at the front" (lines 8-20).