Vessel having propeller arranged on vertical hull center plane
AssigneeNippon Kokan Kabushiki Kaisha
InventorNorihiro Matsumoto
Life of this patent
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Abstract
A vessel equipped with a single screw comprising a propeller shaft positioned on the vertical hull center plane, an upper deck portion which is substantially symmetrical with respect to the vertical hull center plane, and a stern portion having a longitudinal plane passing through a stern end of the vessel. The longitudinal plane of the stern portion is positioned laterally offset from the vertical hull center plane by 5 to 25% of a diameter of a propeller disc plane. The longitudinal plane of the stern portion is positioned on the port side when the propeller shaft is rotated clockwise. The longitudinal plane of the stern portion is positioned on the starboard side when the propeller shaft is rotated counterclockwise.
Claims5
A vessel comprising a hull having a vertical hull center plane, and a single crew propulsion system, comprising:
- said single screw propulsion system including a rotatable propeller shaft positioned on said vertical hull center plane;
- and a propeller coupled to said shaft, said propeller, when rotated by said shaft, forming a propeller disc plane of given diameter;
- said hull including an upper deck portion arranged substantially symmetrically with respect to said vertical hull center plane;
- said hull further including a stern portion coupled to said upper deck portion, said stern portion having a longitudinal plane passing through a stern end of said vessel;
- and
- said longitudinal plane of said stern portion being positioned laterally offset from said vertical hull center plane by 5 to 25% of said diameter of said propeller disc plane.
Dependencies are inferred from the claim text.