Key:seamark:platform:category

Classification of an offshore raised structure.

Categories

Category (CATOFP)	seamark:platform:category	Definition
Oil derrick/rig	oil	A temporary mobile structure, either fixed or floating, used in the exploration stages of oil and gas fields.
Production platform	production	A term used to mean any permanent offshore structure equipped to control the flow of oil, gas, or electricity.
Observation/research platform	observation	A platform from which one's surroundings or events can be observed, noted or recorded such as for scientific study.
Articulated loading platform (ALP)	alp	A metal lattice tower, buoyant at one end and attached at the other by a universal joint to a concrete filled base on the sea bed. The platform may be fitted with a helicopter platform, emergency accommodation and hawser/hose retrieval.
Single anchor leg mooring (SALM)	salm	A rigid frame or tube with a buoyancy device at its upper end , secured at its lower end to a universal joint on a large steel or concrete base resting on the sea bed, and at its upper end to a mooring buoy by a chain or wire.
Mooring tower	mooring	A platform secured to the sea bed and surmounted by a turntable to which ships moor.
Artificial island	artificial_island	A man-made structure usually built for the exploration or exploitation of marine resources, marine scientific research, tidal observations, etc.
Floating production, storage and offloading vessel (FPSO)	fpso	An offshore oil/gas facility consisting of a moored tanker/barge by which the product is extracted, stored and exported.
Accommodation platform	accommodation	A platform used primarily for eating, sleeping and recreation purposes.
Navigation, communication and control buoy (NCCB)	nccb	A floating structure with control room, power and storage facilities, attached to the sea bed by a flexible pipeline and cables.