This unique and innovative book provides guidelines, procedures and information for the offshore renewables and oil & gas sectors with regard to the requirements for metocean at each stage of the life cycle of a project. It also provides details about metocean processes and activities that ensure these requirements are addressed. It therefore presents a better understanding of what metocean is all about and how optimum use of data and information can benefit offshore development activities. Reference is made to appropriate standards as and when applicable and it will therefore complement existing standards. Written by an expert with many years practical experience, the book provides information about the development of metocean, the rationale behind it and the key data and procedures that should be utilised and followed to enable more profitable offshore operations.