When installing the steering telemotor to the ship, the ship-builder must know what kind of effect is occurred to its performance by changing the specifications of the pipe lines and its liquids. For this purpose, the authors have measured the steering wheel torque and pressure of each_parts by changing the liquid, the diameter of the pipe, and pipe length, at the shop. The following points were made clear as the results of this experiments. (1) The wheel torque can be calculated by the suitable assumption of the mechanical efficiency. (2) Even when the rotating speed of the wheel is changed within the range of this experiment, there isn't any effect to the wheel torque. (3) When changing the specification of the telemotor pipe line, there isn't any effect to the liquid viscosity resistance. (4) The most causes for increasing the wheel torque is induced by the force for moving the, control rod of the Hele-Shaw pump and pressing reciever springs.