Patent ID: 7143707

Claim:
A hydrojet for watercraft, the hydrojet comprising: a) a housing unit, which can be installed in the bottom of the watercraft and contains at least one propeller that can be rotated about a propeller axis and delivers the water entering through a bottom-side intake opening and through said housing section of the housing unit through a bend and through a bottom deflecting grid arranged rotatably, by means of a steering shaft, in a discharge opening of the housing unit, which said discharge opening is flush with the bottom, and thus releases it under the housing unit; b) the propeller forms an axial flow pump, which is in functional connection with a drive, at least with a propeller shaft arranged on a delivery side of the bend in a space between said discharge opening and said propeller and a pump housing section of the housing unit; c) the axis of rotation of the propeller sloping towards the primary flow direction, which axis of rotation extends at an angle down to the intake opening of the housing unit, has a slope angle (α) between 20° and 50° in relation to a bottom plate as a horizontal base; and d) the hydrojet being designed such that the intake housing section is aligned with the main direction of travel in case of the normal use of the hydrojet, and the bottom-side intake opening of the housing unit is arranged in front of the discharge opening.