Patent ID: 8246401

Claim:
A Kort nozzle configured to be swivelable about a vertical axis of rotation, wherein the Kort nozzle comprises an integrally formed nozzle ring which envelops a fixed ship propeller, wherein the nozzle ring has two central areas with respect to the height of the Kort nozzle, the first of said central areas being located on the starboard side of the nozzle ring and the second of said central areas being located on the port side of the nozzle ring, wherein in each of said central areas at least one opening in the nozzle ring is provided for creating a flow connection from outside the Kort nozzle to the inside of the Kort nozzle, wherein the at least one opening of the first central area and the at least one opening of the second central area are always unsealed so that water continuously flows through both openings, wherein outside of said central areas the nozzle ring is configured watertight and has no openings.