Structure for reducing the drag of a ship and its application

Abstract

A structure for reducing the drag of a ship and its application thereof is provided. The structure for reducing the drag of a ship includes at least one turbulence generating structure which is installed on the side surface between the widest section and the aft end or on the bottom surface between the deepest portion and the aft end of the ship. The arrangement of the turbulence generating structure can generate turbulence to reduce the drag of the ship, and thereby increase the speed of the ship and/or reduce the ship's fuel consumption.

1 . A structure for reducing drag of a ship, comprising:
 a hull, comprising a fore end and an aft end, wherein a keel line is formed between said fore end and said aft end of said hull; and   a plurality of turbulence generating structures, provided on a side surface between a widest section and the aft end of said hull, or on a bottom surface between a deepest portion and the aft end of said hull,   wherein each turbulence generating structure of the plurality of turbulence generating structures is a polyhedron having a slope or curved front surface and an impact surface, said impact surface has an intersection angle of not more than 60 degrees or parallel with the keel line of the ship, and the surface area of the turbulence generating structure is 0.0015% to 0.03% of the surface area of the ship,   wherein the plurality of turbulence generating structures are arranged in one of the following configurations: (a) adjacent to each other with a gap between the turbulence generating structures or (b) without a gap between the turbulence generating structures in a line or stripe oblique to the keel line, whereby the plurality of turbulence generating structures generates turbulence to reduce the drag of the ship while sailing.   
     
     
         2 . The structure for reducing the drag of a ship according to  claim 1 , wherein a configuration of at least one of the plurality of turbulence generating structures is a curved-face rectangle, a slanted-face rectangle, a polygon, a trapezoid, a polyhedron, a triangular solid, a cone, a semi-circular solid or a semi cone. 
     
     
         3 . The structure for reducing the drag of a ship according to  claim 1 , wherein at least one of the plurality of turbulence generating structures is adhered, embedded or welded to the surface of the hull, or integrally installed with the hull. 
     
     
         4 . The structure for reducing the drag of a ship according to  claim 1 , wherein at least one of the plurality of turbulence generating structures is made of metal, plastic, wood, bamboo, glass, ceramic or composite materials.