GEO
Geographical (rotation)
GEOG RTN or GEOG ROT
In geographical rotation
Geometric Isomer
An isomer differing because of the structural location of certain elements.
GEOROT
Geographical Rotation
GES
Generic Exposure Scenarios
Ghee
A word derived from the Hindi word ""Chi"" meaning clarified and crystallised butter fat from buffalos or cows milk. Ghee made from buffalos milk is white, whereas that made from cows milk is yellow in colour. These products have a rich and pleasant flavour and have a granular structure. Granularity is considered by the consumers in some tropical countries as an important criterion of quality and purity of these products.
GISIS
Global Integrated Shipping Information System
Giving (someone) a Wide Berth
To anchor a ship far enough away from another ship so that they did not hit each other when they swung with the wind or tide.
GL
Gearless or Germanischer Lloyd
Glass Reinforced Plastics
See Unsaturated polyester resins
Global Maritime Intelligence Integration (GMII)
It is within the Office of the Director of National Intelligence, with the mission to ensure govern- ment–wide access to maritime information and data critical to intelligence production and to serve as the focal point and oversight agent for maritime specific information issues.
GLR
German Liner Replacement
Glue Tanker
A tanker for the bulk carriage of glue
Glyceride
An ester formed from glycerol and an organic acid
Glycerides (Triacylgycerols)
Natural fats and oils are mixtures of triglycerides. The esters of fatty acids combined with glycerol are often referred to as "triglyceride". Typical fatty acid compositions are tabled in Appendix B. In general solid fats contain a relatively high proportion of the saturated fatty acids and oils contain higher proportions of unsaturated or shorter chain fatty acids.
Glycerol or Glycerine
Glycerol is an important structural component of fats and oils. A complete splitting (hydrolysis) of fats/oils results in glycerol and free fatty acids. Glycerol finds uses as a humectant, a food ingredient, in pharmaceutical products and in explosives. Glycerol can be synthesised from petroleum feedstock.
Glycol
Any of a class of organic compounds belonging to the alcohol family; in the molecule of a glycol, two hydroxyl (OH) groups are attached to different carbon atoms. The term is often applied to the simplest member of the class, ethylene glycol. See ethylene glycol and propylene glycol.
Glyerol or Glycerine
Glycerol is an important structural compound of fats and oils. A complete splitting by hydrolysis of fats or oils results in glycerol and free fatty acids. Glycerol is used as a humectant, a food ingredient, in pharmaceutical products and in explosives.
GM
General Manager; head of local entity
GM
Ship Stability: Metacentric height; distance from the center of gravity to the transverse metacenter.
GMDSS
Global Maritime Distress and Safety System (IMO)
GMPHOM
Guide to Manufacturing & Purchasing Hoses for Offshore Moorings
GN (or GR)
Grain (capacity)
GNC
Global Navigation Chart
GNCN or Gencon
General Conditions
Go–Down
In the Far East, a warehouse where goods are stored and delivered.
Gone by the Board
Anything seen to have gone overboard or spotted floating past the ship (by the board) was considered lost at sea.
Gooseneck
The front rails of the chassis that raise above the plane of the chassis and engage in the tunnel of a container leading to the connection to tractor.
GOP
Gross operating profit
Gossypol
A natural constituent of cotton seeds which, if transferred to the crude oil, results in colour instability and an oil which is difficult to process. The cooking procedure of the cotton seeds is critical in determining whether gossypol is bound in the meal or transferred to the oil.
GP
Grain capacity. Cubic capacity in 'grain'
GPC
General Purposes Committee
GPCA
Global Petrochemical Competitive Analysis.
GPS
Global Positioning System
GR
Grain (Capacity of vessel)
GR
Geographical rotation. Ports in order of calling
Grab Dredger
A vessel equipped to obtain material from the sea bed by use of a grab or backhoe. The material may be carried on board, transferred to other vessels, pumped ashore or deposited elsewhere using a spray
Grab Dredger Pontoon
A non propelled dredger pontoon fitted with a system of grabs
Grade trade
A swap of one kind of oil for another. Such business involves exchanges like sour crude for sweet and gasoil for gasoline.
Grain Elevating Pontoon, non propelled
A non propelled pontoon used for the purpose of operating a grain elevator
GRAINVOY
Grain charter party
Granularity
Agglomeration of crystals resulting in the formation of granules generally visible to the naked eye. There are a number of fat-based products, such as vanaspati and ghee, where a granular structure is very much appreciated by the consumers and is considered as a quality parameter. A granular texture in fat-based products is not only determined by the chemical composition of the fat/fat blends, but also by the way the product is cooled from the melt. Generally, large granules are obtained by slow cooling of the product. Rapid cooling results in smaller crystals and smooth texture.
Gravity
The density or weight to volume ratio of materials. The oil business usually expresses this quality in API degrees or specific gravity.
Green Passport
A certificate which confirms which materials have been used in a vessel’s construction
Greenhouse gases
Greenhouse gases are those gaseous constituents of the atmosphere, both natural and antropogenic, that absorb and emit radiation at specific wavelengths within the spectrum of infrared radiation emitted by the Earth's surface, the atmosphere and clouds.
GRI
General rate of increase
Gripe
A sailing vessel gripes when, by poor design or imbalance of sail, it tends to end up with its bow into the wind when sailing close-hauled. The sails flap around, forward progress is halted and she is very hard to steer. On land, the term means to complain, complain, complain.
Groggy
In 1740, British Admiral Vernon (whose nickname was "Old Grogram" for the cloak of grogram which he wore) ordered that the sailors' daily ration of rum be diluted with water. The men called the mixture "grog". A sailor who drank too much grog was"groggy".
Gross Registered Tonnage (GRT)
Gross Register Tonnage. Internal cubic capacity of the ship expressed in tons on the basis of 100 cubic feet per ton. This differs from DWT because it measures the volume versus the weight. NOTE: GRT was replaced by GT back in 1982.
Gross Terms
Terms under which the carrier has to arrange and pay for cargo handling
Gross Tonnage
(0.2+0.02*log10V)*V, where V is the volume in cubic metres of all enclosed spaces on board
Gross Tonnage (GT, G.T. or gt)
Gross tonnage is calculated based on "the moulded volume of all enclosed spaces of the ship" and is used to determine things such as a ship's manning regulations, safety rules, registration fees and port dues, whereas the older gross register tonnage is a measure of the volume of certain enclosed spaces. Applies to vessels, not to cargo, (0.2+0.02 log10V) where V is the volume in cubic meters of all en- closed spaces on the vessel. Since 1994, it replaces “Gross Registered Tonnage.” An approximate conversion ratio is 1NT = 1.7GT and 1GT = 1.5DWT. NOTE: Gross Tonnage replaced Gross Registered Tonnage back in 1982.
Gross Weight
Entire weight of goods, packaging and freight car or container, ready for shipment. Generally, 80,000 pounds maximum container, cargo and tractor for highway transport.
Grounding
when a vessel strikes the bottom of the sea or channel
Groundnut Oil
The oil expressed or extracted from the seed of the groundnut ("Arachis Hypogaea") after removing the husk and the germ. Groundnuts are extensively cultivated in China, India, USA and in a number of African countries, for example Senegal, Nigeria and Sudan. The plant is unusual in pushing its unripe seed into the ground, where ripening takes place. Groundnut oil is a highly prized cooking oil.
Groundswell
A sudden rise of water along the shore. It often happens when the weather is fine and the sea behind it appears calm. Said to occur when undulating water from a far away storm reaches the shoreline where friction causes the swell. In common use, the term groundswell means a growing change in public opinion.
Groupage
A consolidation service, putting small shipments into containers for shipment.
GRP
Geographic Response Plan (generally appended to ACPs)
GRS
Geographic Response Strategies (generally appended to ACPs/GRPs)
GSAAAAB
Good safe always afloat always accessible berth
GSBAA
Good and safe berth always afloat
GSM
Good sound merchantable
GSP
Government selling price. The price of crude or products established by a government marketing company. Sometimes written GEP, for government established price. See posted price.
GSSL
Ports of Genoa, Savona, Spezia or Leghorn
GSSLNCV
Ports of Genoa, Savona, Spezia, Leghorn, Naples, Civetta or Vecchia
GTEE
Refers to any Gas Turbine tanker, i.e. tanker fitted with a Gas Turbine for propulsion.
G/T
Refers to any Gas Turbine tanker, i.e. tanker fitted with a Gas Turbine for propulsion.
G.T
Refers to any Gas Turbine tanker, i.e. tanker fitted with a Gas Turbine for propulsion.
Guarantees
A seller promises to deliver oil at least as good as the guarantees--guaranteed specifications--he puts on it. When material sells on guarantees, the buyer can refuse to accept it, or demand a price adjustment, if it fails to meet any of them.
Gunwale
The upper edge of a ship’s sides
GZ
Ship Stability: Symbol for righting arm; horizontal distance measured between the vertical lines of forces between G and B. GZ is measured horizontally from G to a point of intersection of the upward line of force from B at a point labeled Z.
H AND M or H&M
Hull and Machinery
H&M
Hull and machinery insurance
H-TYPE
Hakodate (vessel) type
H.A. OR D.
Havre, Antwerp or Dunkirk
