Coastal engineering addresses the challenges posed by the dynamic interface between land and sea, encompassing coastal erosion, sediment transport, and coastal infrastructure design. Develop a theoretical framework elucidating the principles of coastal processes, including wave mechanics, littoral drift, and shoreline evolution. Explore theoretical models for predicting coastal hazards, such as storm surges and tsunamis, and discuss theoretical approaches to coastal protection and shoreline management aimed at enhancing resilience and mitigating risks to coastal communities and infrastructure.