A geometrical method of designing hull form of ships in the speed range of Froude Number, 0.21∼0.34, is presented continuing previous report, where the values of Cp, Cw and displacement-length ratio are given as design requirements. The method consists of the following procedure. (1) A shape of Cp curve of fore body is given based on elementary wave theory, and a proper size bulb is fitted to main hull. (2) Based on separability hull principle, the length of middle body for maintaining the designed displacement is determind corresponding with the values of designed C_<PF> which is selected by the theory. (3) The shape of Cp curve of aft body is drawn up while modyfing the same curve of Type Ship, taking the viscosity resistance and propulsive efficiency into considerations. (4) The geometrical method of deforming hull form such as a method of 1-Cp and logarithmic ordinate is applied in present report for practical using. The Cp curve drawn up by present method is closely resemble to the same curve of actual hull form, of which the result of tank test is valued higher.
