Glossary
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TermDefinition
- General Nautical Terminology, Navigation GMT
The mean solar time at the Prime Meridian in Greenwich, London, used as a global time standard.
Greenwich Mean Time (GMT) is a timekeeping...
More Details - General Nautical Terminology, Navigation Gnomonic Projection
A chart projection of part of a hemisphere showing the earth's grid projected by radials from a point at the centre of the sphere onto a plane so...
More Details - General Nautical Terminology, Navigation GNSS
The collective set of systems that enables positioning devices to calculate latitude & longitude. The system includes solutions including the GPS...
More Details - General Nautical Terminology Go AboutTo change tack by altering course to bring the wind on the other side
- General Nautical Terminology Going AsternWhen going backwards through the water you may hear the skipper say: "I am going astern".
- Phonetic Alphabet, Signals & Communication Golf
Pronounced: GOLF
The term for the letter G in the NATO Phonetic Alphabet.
- General Nautical Terminology Gooseneck
A gooseneck is a fitting on a sailboat that connects the boom to the mast. It allows the boom to pivot and move freely, positioning the sail...
More Details - General Nautical Terminology GoosewingedHaving one sail set on each side of the boat when running directly downwind.
- General Nautical Terminology Goose-winged
Goose-winged is a sailing term that refers to a sailing vessel with its mainsail set on one side of the boat and the headsail (jib or genoa) set...
More Details - General Nautical Terminology Goose WingingTo set the mainsail on one side of the vessel and the headsail on the other when running
- General Nautical Terminology GPS
The US-based system of satellites, able to determine the latitude and longitude of a receiver on Earth by calculating the time difference for...
More Details - General Nautical Terminology Grab RailRails fitted above and below decks to grab at when the vessel heels
- General Nautical Terminology, Navigation Greenwich Mean Time (GMT)
The mean solar time at the Prime Meridian in Greenwich, London, used as a global time standard.
Greenwich Mean Time (GMT) is a timekeeping...
More Details - General Nautical Terminology GroundA general term for the anchors, cables and all the gear required when anchoring
- General Nautical Terminology GRPA fibre reinforced polymer made of a plastic matrix reinforced by fine fibres of glass. GRP is a lightweight, extremely strong, and robust material.
- General Nautical Terminology Guard RailSafety line fitted round the vessel to prevent the crew falling overboard
- General Nautical Terminology Guardrail
A safety barrier installed along the edges of a vessel’s deck to prevent crew or passengers from falling overboard.
This essential feature on...
More Details - General Nautical Terminology Gunwale
The upper edge or rim of a boat's side, often serving as a structural reinforcement and a mounting point for fittings or equipment.
The term...
More Details - General Nautical Terminology GuyA line attached to the end of a spar to keep it in position
- General Nautical Terminology Gybe
A gybe (jibe) is a sailing manoeuvre where a boat changes direction by turning its stern through the wind. During a gybe, the wind crosses over...
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