SHIP HAVING CONTRA-ROTATING GEAR SET

摘要

PURPOSE: A ship including a reverse gear set is provided to improve the thrust to a ship due to reducing swirl motion around a propeller by rotating a front propeller and a rear propeller in the reverse direction at the same time. CONSTITUTION: A ship including a reverse gear set comprises: a rotary shaft which transfers engine power; a front and a rear propellers which are combined with the rotary shaft and occur the thrust to the ship; an reverse gear set(50) which transfers the power of the rotation shaft to the rear propeller; and a coupler(200) which combines the reverse gear set to a rudder fixture(41) to be able to vertically move.