Glossary Archive

The interior spaces of a vessel that are located beneath the main deck, typically encompassing living quarters, storage areas, and machinery spaces. Below deck describes all areas of a boat or ship that lie beneath the main deck, which is the primary horizontal structure forming the upper surface of a vessel. These spaces are integral...

A type of sail plan characterised by a triangular mainsail set aft of the mast, with the mast typically taller than the length of the boat. A Bermudan rig, also known as a Marconi rig, is one of the most common types of sail configurations used on modern sailing vessels, particularly yachts. The rig consists...

A place where a vessel can be tied up;  A sleeping place on a vessel; To give an obstruction wide clearance by keeping well clear

Combined red (port) and green (starboard) light positioned on the bow

A loop created in the standing part of a rope.

A pump used to remove unwanted water from the lowest internal parts of a vessel. It may be electric, manual or portable, and is normally arranged so water collecting in the bilges can be discharged overboard. Automatic pumps often use a float switch, while manual pumps provide a backup if electrical power is unavailable. The...

The compartment at the bottom of the hull of a ship or boat where water collects and must be pumped out of the vessel.

A canvas or fabric top supported by a metal frame, typically found on boats to provide shade and protection from the sun.  A Bimini is a popular addition to many boats, particularly those used for leisure and fishing, as it offers protection from the sun while allowing for an open-air experience. It is usually made...

The housing or stand that supports the vessel’s compass. This is usually positioned where the helm can read it easily, often near the wheel or steering position. It may also carry lighting, guard rails or nearby navigation instruments. The compass should be protected from magnetic interference caused by tools, speakers, electronics or metal objects placed...

Sea area of the Met Office Shipping Forecast. Covers the Bay of Biscay, off the west coast of France and north coast of Spain. Covering the Bay of Biscay (named after the Biscayne people), Biscay is exposed to Atlantic lows that produce winter gales of Force 8–9 and 10 m swells. Its legendary storms inspired...