The Coastal Engineering Manual (CEM) provides a single, comprehensive technical document that incorporates tools and procedures to plan, design, construct, and maintain coastal projects. This engineering manual will include the basic principles of coastal processes, methods for computing coastal planning and design parameters, and guidance on how to formulate and conduct studies in support of coastal flooding, shore protection, and navigation projects. Topics in this Part I include the introduction to coastal project element design, types and functions of coastal structures, site specific design conditions, materials and construction aspects, and fundamentals of design. Part II includes reliability in design, case studies of the design of specific project elements, and monitoring, maintenance and repair of coastal projects.