In the prototype of this tool all the signal processing done by the minimum AT89s5 system. Minimum system will get the binary code to control the direction of motion of the ship . By controling the steering angle through the steering wheel of the ship so the ship can detected movement can be monitored by viewing the display, so if there is nomovement of ships in accordance with the input code will be detected early so that expected if this system is applied to the actual sustem will be able to reduce accidents caused by the fault direction of motion of the ship. By utilizing the technology acquired digital the 0.97% error rate, spo it is possible this system to be realized.