Device for reducing the sailing drag and assisting the steering of the ship

Abstract

The invention provides a device which can reduce the drag and assist the steering of the ship, mainly to set up a 3-way pipe in the bow where is below the water level. The 3-way pipe leads to three openings at the stem, the port side and the starboard side respectively. At least one control valve (or deflector) can be provided in the 3-way piping system. The valve (or deflector) can be controlled from the bridge, with a diversion device. When the ship sails forward, water flows into the 3-way pipe from the forward pipe, distributed to both side pipes and then outflow, so that it can reduce the pressure drag to the stem, improve the ship's speed and save bunker. When the valve (or deflector) is set as neutral, the water will be distributed evenly to both side pipes, which will not affect the ship's heading. When the valve (or deflector) deflects more water to either side's pipe, the ship will turn to the opposite side.

What is claimed is: 
     
         1 . A device for reducing the sailing drag and assisting the steering of the ship is provided with a 3-way piping system in the bow below water level, of which is in the form of “inverted Y-shape” structure leads to the opening at stem and both sides of the hull, the axis of each opening at side of hull being normal to the long axis of the ship, at least one valve is equipped in the 3-way piping system, which can control the flow direction; The water flows in from the stem pipe, If the valve controls and directs the water to turn to the starboard side pipe, the ship will turn to port side; If the valve control and direct the water to turn to the port side pipe, the ship will turn to starboard side. 
     
     
         2 . A device for reducing the sailing drag and assisting the steering of the ship is provided with a 3-way piping system in the bow below water level, of which is in the form of “inverted Y-shape” structure leads to the opening at stem and both sides of the hull, the axis of each opening at the side of hull being normal to the long axis of the ship, At least one deflector is equipped in the 3-way piping system, which can control the flow direction; The water flows in from the stem pipe, If the deflector control and direct the water to turn to the starboard side pipe, the ship will turn to port side; If the deflector control and direct the water to turn to the port side pipe, the ship will turn to starboard side. 
     
     
         3 . A device for reducing the sailing drag and assisting the steering of the ship is provided with a 3-way piping system in the bow below water level, of which is in the form of “inverted Y-shape” structure leads to the opening at stem and both sides of the hull, the axis of each opening said openings at side of hull being normal to the long axis of the ship, At least one stopper is equipped in the 3-way piping system, which can control the flow direction; The water flows in from the stem pipe, If the stopper controls and directs the water to turn to the starboard side pipe, the ship will turn to port side; If the stopper control and direct the water to turn to the port side pipe, the ship will turn to starboard side. 
     
     
         4 . The device for reducing the drag and assisting the steering of the ship as set forth in  claim 3 , wherein the shape of the stopper is triangular. 
     
     
         5 . A device for reducing the sailing drag and assisting the steering of the ship is provided with a 3-way piping system in the bow below water level, of which is in the form of “inverted Y-shape” structure leads to the opening at stem and both sides of the hull, the axis of each opening said openings at side of hull being normal to the long axis of the ship, When the ship sails forward, water flows into the 3-way pipe from the forward pipe, distributed to both side pipes and outflow, so that it can reduce the total pressure drag to the ship.