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
Writes the text representation of the specified double-precision floating-point value, followed by the current line terminator, to the standard output stream.