Device for manoeuvring a watercraft

The device according to any of claims 1, 2 or 20 characterised in, that the intermediate space between the first part of the rudder trunk and the wall of the receiving shaft has a constant clearance at least over half the clamping height.

The device according to any one of claims 1, 2 or 20, characterised in, that the intermediate space in the lower end region of the clamping height has a larger clearance than in the upper end region of the clamping height, or that the clearance in the lower end region of the clamping height increases when viewed in the direction from the upper end region to the lower end region.

The device according to any one of claims 1, 2 or 20, characterised in, that the rudder trunk has a wall thickness, wherein the wall thickness in the upper end region of the clamping height has a smaller thickness than in the lower end region of the clamping height.

The device according to any one of claims 1, 2 or 20, characterised in, that the rudder trunk has an outside diameter, wherein the outside diameter is substantially constant.

The device according to any one of claims 1, 2 or 20, characterised in, that the rudder trunk has an inside diameter, wherein the inside diameter in the upper end region of the clamping height is greater than in the lower end region of the clamping height.

The device according to any one of claims 1, 2 or 20, characterised in, that the rudder trunk has no fastening means projecting outwards from the rudder trunk, in the form of fastening plates, connecting plates or fastening ribs, for connecting the rudder trunk to a watercraft or the receiving shaft.

The device according to any one of claims 1, 2 or 20, characterised in, that the receiving shaft is configured substantially as a tube or in tubular manner at least in the entire region of the clamping height.

The device according to any one of claims 1, 2 or 20, characterised in, that the wall of the receiving shafts is firmly connected to a watercraft body.

The device according to any one of claims 1, 2 or 20, characterised in, that the wall of the receiving shaft is connected to the watercraft body and by means of the connecting means to the rudder trunk in such a manner that the receiving shaft is watertight.

The device according to any one of claims 1, 2 or 20, characterised in, that at least one means for sealing is disposed between the first part of the rudder trunk and the wall of the receiving shaft in the lower end region of the clamping height, wherein the means for sealing preferably comprises means for adhesive bonding.

The device according to any one of claims 1, 2 or 20, characterised in, that the rudder trunk and the wall of the receiving shaft comprise steel or steel materials.