Glossary
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TermDefinition
- General Nautical Terminology, Parts of a Boat Forward
The section of a vessel that is located towards the bow, or front, of the ship.
Forward refers to the area or direction towards the bow...
More Details - General Nautical Terminology FoulThe opposite of clear; Adverse (wind or tide); Unsuitable
- Phonetic Alphabet, Signals & Communication Foxtrot
Pronounced: FOKS-trot
The term for the letter F in the NATO Phonetic Alphabet.
- General Nautical Terminology, Signals & Communication Frequency Modulation (FM)
A method of encoding information in a carrier wave by varying its frequency, commonly used in marine radio communications.
Frequency...
More Details - General Nautical Terminology Fuel collar
A Fuel collar is designed to fit around a refuelling hose to prevent any spillage or backsplash. This protects your boat and the environment.
- General Nautical Terminology FurlTo roll or gather a sail against its mast or spar
- General Nautical Terminology Furling
- General Nautical Terminology Furling Drum
A rotating mechanism at the base of a headsail furling system that enables the controlled rolling and unrolling of the sail around the...
More Details - General Nautical Terminology Gaff
A spar attached to a mast, used to support the upper edge of a fore-and-aft sail, such as a gaff rigged mainsail or topsail.
A gaff is an...
More Details - General Nautical Terminology Gaff Rig
A sailing rig where the sail is four-sided and controlled by a spar (the gaff) at its top, which is hoisted at an angle to the mast.
A gaff...
More Details - Weather (Meteorology) Gale
Beaufort Scale - Force 8 (Gale Force 8)
A gale refers to a strong wind between 34 to 40 knots (39 to 46 mph or 63 to 74 km/h) on the Beaufort...
More Details - General Nautical Terminology, Parts of a Boat Galley
The kitchen or cooking area on a ship or boat, typically compact and designed for efficient use of space.
Unlike a kitchen in a house, the...
More Details - Flag / Pennant, Signals & Communication Code Flag Golf (G)

The International Maritime Signal Flag Golf.
Meaning
I require a pilot.
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By fishing vessels: I am hauling nets.
If appended by a Numeral... - General Nautical Terminology GDOP
A measure in marine navigation that quantifies the effect of satellite geometry on the accuracy of position determination. It is a factor used to...
More Details - General Nautical Terminology, Parts of a Boat Gelcoat
A specialised resin-based coating applied to the surface of fibreglass boats to provide a smooth, durable, and protective outer layer.
Gelcoat...
More Details - Organisation General Lighthouse Authorities (GLA)
A term that collectively refers to the three organisations responsible for maintaining maritime navigation aids—such as lighthouses, buoys, and...
More Details - General Nautical Terminology Genoa
A large foresail that overlaps the mainsail, commonly used on sailing yachts to improve speed and performance in light to moderate winds.
A...
More Details - General Nautical Terminology Geometric Dilution of Precision (GDOP)
A measure in marine navigation that quantifies the effect of satellite geometry on the accuracy of position determination. It is a factor used to...
More Details - General Nautical Terminology, Weather (Meteorology) German Bight
Sea area of the Met Office Shipping Forecast. Located in the southeastern North Sea, off the coast of northern Germany and the...
More Details - General Nautical Terminology, Weather (Meteorology) GFS
A weather model developed by the National Centers for Environmental Prediction (NCEP) that provides global weather forecasts by simulating the...
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