Demand for the size and hull form of newly-built ships is diversified under the age of a low economic growth. The author has developed how to design a new full ship to meet the diversified requests from shipowners and the basic performance of the ship. The core of this method is to design a new full ship with the different length, breadth, depth and draft from those of a prototype ship, by keeping its aft and/or fore part as originally same as possible. The feature is aimed at the individual characteristics of three parts of the ship, that is the entrance, the run and the parallel part, which affect the hull resistance and the self-propulsive performance. An example of application and the design system to develop this method are also presented.
