As sea traffic has been complicated and ships have been enlarged recently, we require a safety of ship in the coastal and areas. Although the maneuvering performance of ship herself almost clearly become, the important control quality of human being is not exactly grasped. The real time ship-handling simulator can be used as the most useful way when we understand the safety of ship maneuvering performance in the harbor area. The most important things of real time ship handling simulator are mathematical model and 3 dimensional image. We can manage the 3 dimensional image by using the 3 dimensional graphic technique. The distributed processing method is thought as one of the most effective ways to network communication system. We developed the real time ship handling simulator using the distributed processing network method.