This book is an English translation of the Dutch book "Ontwerp van Schutsluizen", ISBN 90-369-3305-6. The design of locks consists of a large number of aspects. For this reason, the chosen set-up for this book is as such that the various aspects of the design are separately dealt with in different chapters in order to enlarge the accessibility as much as possible. The cohesion between the aspects is addressed in a number of general chapters and in a large number of references in the chapters referring to other paragraphs in the book. Naturally, there are references to literature. "Design of locks " consists of two parts with 23 chapters in all. • Part one (chapters 1 to 9) contains the more general information necessary for the first phase of the preliminary design process. It addresses the program requirements, the design process, main dimensions of lock and lock approaches, the intake and discharge systems and the choice of lock gates, lock heads and the lock chamber. • Part two (chapters 10 to 23) provides a more technical description of the various study topics as a continuation of the preliminary design process. It deals with steel and mechanical engineering, concrete constructions and foundations, control and operation, sheet piling, guiding structures, bed protection and hydraulic loads. It also looks at particular subjects such as maintenance aspects, reconstructions, salt and freshwater separation systems and future developments. The necessary examples are provided. See tables 1.1 and 1.2 for a brief overview of the contents. The best way for a designer to gain insight into a certain subject or to find answers to more specific questions is by means of the chapter headings. There is also an index on key words.