A major goal in the design of virtually all vessels is to obtain a hull form having low resistance. The first section of the book provides basic understanding of the flow phenomena that underlie the resistance encountered by a ship moving in water. The second section contains an introduction to the methods by which that knowledge is applied to the prediction of resistance, including model testing, empirical methods and computational methods. A final section provides guidance to the naval architect in designing a hull form. Design procedures are described for achieving favorable flow and resistance characteristics of the hull and appendages. Examples are given for ships designed for high, medium and low speeds. Design considerations affecting both wave and viscous effects are included. Finally the flow in the stern wake is discussed, an area important for both resistance and propeller performance.