Breakwaters and closure dams belong to the most spectacular hydraulic structures. They are exposed to the most severe loading by waves and currents, either during their construction, or during their life cycle. Design and construction of these structures are so vitally interrelated that a proper understanding requires a thorough knowledge of the theory and a proper understanding of practical matters. This book offers an essential, integrated combination of theory and practice to the graduate student. Beginning with a description of the functional requirements, it discusses the relevant theory and shows the application of experience and theoretical knowledge to the design.