Maritime Glossary
Source-cited definitions for shipping, engineering, navigation, and regulatory terminology. Confidence-scored and verified against primary IMO, IHO, and industry sources.
- Fairleadfair-lead · Panama lead · roller fairlead
- A fairlead is a fitting on a ship's deck or bulwark that guides a mooring line or rope in the desired direction, giving it a fair, smooth lead to the winch or bollard and reducing chafe and the angle of pull.
- mooringseamanshipdeck-fittingshigh confidence
- Flag Stateflag · state of registry
- A ship's flag state is the country in which it is registered and whose flag it flies. The flag state has legal jurisdiction over the ship, sets and enforces its regulations, and issues or authorises its statutory certificates.
- regulationlegaloperationshigh confidence
- Floating Production, Storage and OffloadingFPSO
- An FPSO is a Floating Production, Storage and Offloading unit — a ship-shaped offshore vessel that receives oil or gas from subsea wells, processes it, stores it on board, and periodically offloads it to shuttle tankers. It brings production to fields far from pipelines.
- offshorevessel-typesoil-and-gashigh confidence
- Forecastlefo'c'sle · focsle · foc'sle
- The forecastle, often written and pronounced fo'c'sle, is the raised deck or structure at the bow of a ship. On modern ships it houses the anchor and mooring machinery and stores, and its raised height helps keep the bow dry in a seaway.
- ship-structuredeckseamanshiphigh confidence
- Freeboard
- Freeboard is the vertical distance from the waterline to the upper edge of a ship's freeboard deck at the ship's side. It represents the reserve buoyancy that keeps a ship afloat and seaworthy, and its minimum is set by the load line.
- vessel-measurementssafetyregulationhigh confidence