DEVICE FOR REDUCING SHIP'S DRIFT SPEED Russian patent published in 2002 - IPC

FIELD: shipbuilding; shipboard arrangements reducing ship's drift speed due to use of pitching energy. SUBSTANCE: device is arranged in ship's fore bulb; it includes vertical inlet passages 1 and horizontal outlet passages 3 located symmetrically relative to ship's CL and interconnected by means of swivel elbows 2. At pitching, incoming flow of water enters passages 1 and escapes from passages 3, thus imparting thrust force (T) due to reaction of escaping jet. EFFECT: enhanced seaworthiness; reduced drift speed and pitching amplitude; reduced consumption of fuel. 1 dwg