The document discusses the functional requirements and design considerations for floating production storage and offloading (FPSO) systems, including how vessel motions, weather, layout, and processing capacity can influence an FPSO's operations. It provides examples of the Greater Plutonio and Falcon FPSOs and outlines the typical decommissioning process for offshore platforms. FPSO selection and design is influenced by criteria like water depth, weather limits, and processing needs of the field being developed.