Single-shaft double-rudder ship with automatic berthing function

A hull motion control unit (620) performs steering in which the bow distance and stern distance measured by a quay wall spacing distance measurement device are equal and the bow and stern direction of the ship (501) is parallel to a target quay wall (700), and causes the ship (501) to approach the target quay wall (700) in a positive lateral direction while maintaining the parallel state. 船体运动控制部（620）实施由岸壁间隔距离测定装置测定的船头距离和船尾距离相等并且本船（501）的船头船尾方向平行于目标岸壁（700）的原地调头的操舵，并在维持该平行状态的同时使本船（501）趋向于向目标岸壁（700）靠泊而以正横向接近。