balanced rudder meaning in English

补偿方向舵
均衡舵
平衡舵

This ferry is provided with double engines , double propellers and one streamlined semi - balance rudders
本船为双机双桨单流线型半平衡舵船型。
This vessel shall be provided with twin engines , twin propellers and twin streamline balance rudders , and operated by way of a combination of the engine - room and bridge
本船采用双机双浆双流线型平衡舵及机驾合一操纵方式。