Glossary
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TermDefinition
- 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 GalleyAn area where food is prepared and cooked
- 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 GelcoatThe outer unreinforced layer of resin in a GRP hull
- 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
Genoas are a type of headsail on a sailboat larger than the jib and overlapping the mast. Genoas are designed to provide additional sail area for...
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 Give Way
In a collision situation, one or more vessels are defined as Give Way. The Give Way vessel should alter its course to concede passage to another...
More Details - General Nautical Terminology Give Way VesselThe vessel whose duty it is to keep clear of another, she should take early and substantial action to avoid a collision
- Organisation 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 Glass Reinforced Plastic (GRP)A fibre reinforced polymer made of a plastic matrix reinforced by fine fibres of glass. GRP is a lightweight, extremely strong, and robust material.
- Flag Semaphore, Signals & Communication Letter G (Flag Semaphore)
This shape represents the Letter G (Flag Semaphore) and the Number 7 (Flag Semaphore).
- Morse Code, Signals & Communication Letter G (Morse Code)
International Morse Code sequence representing the letter G.
- General Nautical Terminology Global Maritime Distress and Safety System (GMDSS)
An internationally (IMO) agreed-upon set of safety procedures, types of equipment, and communication protocols used to increase safety and make...
More Details - General Nautical Terminology, Navigation Global Navigation Satellite System (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 Global Positioning System (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 GMDSS
An internationally (IMO) agreed-upon set of safety procedures, types of equipment, and communication protocols used to increase safety and make...
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