Abstract
The PID controller is widly used in industrial and control systems of propulsion system on board the ship. Article inroduces PID pnuematic controller, make a study of the influence of propotional, intergral and differential to output of controller. Simultaneously, the article analyses solutions for designing and application the various controllers in the several ship systems, beside the authors used practic together with research to finding out the values of scale factor for propotional, intergral and differential for the NS 732 automatic indicating controller of maker NAKAKITA SEISAKUSHO.