The rudder blade is semi-balance, double plate, stream-line type. Able to turn to 350 rudder Angle at port and starboard side.
舵叶为半平衡式双板流线型结构，可分别向左右回转350舵角。
2
A circular arc fixed plate has the Angle scale, and one side of the circular arc fixed plate is prolonged as the caliper head which provided with two cylindrical pins.