The invention relates to a rudder, and particularly discloses an unpowered rudder. The unpowered rudder comprises a manual pump, an oil cylinder and a rudder handle. A rudder angle meter is arranged below the manual pump. The oil cylinder is installed above the manual pump. A transmission rod is arranged in the oil cylinder and connected with a round hole in the lower portion of the rudder handle. The rudder body is connected with a round hole in the upper portion of the rudder handle. The unpowered rudder has following beneficial effects: the direction of the rudder is changed in the mode that the pressure is transmitted through hydraulic oil; the transmission torque is large; the rudder stabilizing performance is good; the rudder deviating phenomenon is avoided; installation and maintenance are convenient to perform; the rudder angle meter is additionally arranged so that the rudder rotating angle of the rudder body is convenient to observe; the rudder can be operated more accurately and easily; the whole fleets of ships are kept on the same line in the navigation process of the whole fleets of ships; the navigation speed is greatly improved; energy consumption is reduced; and earnings are increased.