Nautical engine speed accelerating device for catamaran boat, has two rudder blades placed in rotary shafts distributed at front and back of engine for forming independently and simultaneously oriented anti-drift plan

摘要

The device has two rudder blades (1,2) placed in rotary shafts (3,4) distributed at front and back of an engine for forming an independently and simultaneously oriented anti-drift planes. The planes are oriented on a length of an engine in the rotary shafts. The rotary shafts are oriented towards eye of the wind and the blades cause a lateral upturn of the engine.