This book provides readers with recent insights and practical tools for the design, maintenance and repair of submarine pipeline. Based on research and field experience of the authors, it offers a comprehensive text on both the foundational aspects of pipeline integrity and the latest advancements in inspection and repair technologies. It covers visual, non-destructive testing, and intelligent technologies for inspection, and simulations and reliability analysis for assessing corroded pipelines. In turn, it examines impact damage mechanisms, and thermal buckling behavior. Further, it covers composite pipelines, including their mechanical properties and failure mechanisms under complex loads. It addresses dent behaviors in steel pipelines, highlighting innovative repair techniques and emerging trends. Written for professionals, such as engineers, project managers, and researchers, this book offers advanced insights and practical tools for assessing submarine pipelines operating under complex conditions in the context of increasingly challenging marine environments.