Glossary

Maritime glossary, terms beginning with G

All maritime glossary terms that begin with the letter G, drawn from every subject section. 1586 entries.

Showing 250 of 1586 terms (page 1 of 7).

G Adventures X97. Polar Expedition Cruise and IAATO Operations: Canadian adventure tour operator that has chartered G Expedition for Antarctic Peninsula voyages.
G and H Towing X137. Harbour Tugs, Towage Operators and Tug Builders: Galveston-Houston harbour towage operator.
G Expedition X97. Polar Expedition Cruise and IAATO Operations: Chartered polar expedition ship operated under the G Adventures brand for Antarctic itineraries.
G-Class X81. Project Cargo, Heavy-Lift and Module Carriers: AAL Shipping G-series multipurpose heavy-lift class.
G.L. Watson X125. Superyacht Industry, Builders and Brokers: Naval architecture firm founded 1873, still active in classic yacht refit consultancy.
G/T X68. Maritime Satcom and Telecommunications: Antenna gain divided by system noise temperature, a figure of merit for receive performance.
G40ME-B9.5 X90. Marine Engine Specific Model Enumeration: MAN B&W Green Ultra Long Stroke two-stroke engine with 400 millimeter bore in the simplified ME-B electronic control configuration.
G45ME-B9.5 X90. Marine Engine Specific Model Enumeration: MAN B&W Green Ultra Long Stroke two-stroke engine with 450 millimeter bore in ME-B configuration offered for handysize and supramax vessels.
G50ME-B9.5 X90. Marine Engine Specific Model Enumeration: MAN B&W Green Ultra Long Stroke two-stroke engine with 500 millimeter bore in ME-B simplified electronic configuration.
G50ME-C9.6 X90. Marine Engine Specific Model Enumeration: MAN B&W Green Ultra Long Stroke two-stroke engine with 500 millimeter bore in the compact ME-C electronic configuration.
G50ME-GI X90. Marine Engine Specific Model Enumeration: MAN B&W Green Ultra Long Stroke 500 millimeter bore two-stroke gas injection dual-fuel engine for methane operation.
G7+ Price Cap Coalition X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: The grouping of G7 states, the EU, and Australia (later joined by additional partners) that established the Russian oil price cap on 2 September 2022.
G7++ FoGG X127. Maritime Security, Anti-Piracy and PMSCs: Group of Friends of the Gulf of Guinea, donor coordination forum supporting Yaounde Architecture, expanded to G7++ in 2017.
G70ME-C10.5 X90. Marine Engine Specific Model Enumeration: MAN B&W Green Ultra Long Stroke two-stroke engine with 700 millimeter bore in compact ME-C electronic configuration for aframax and panamax tonnage.
G70ME-GI X90. Marine Engine Specific Model Enumeration: MAN B&W Green Ultra Long Stroke 700 millimeter bore two-stroke gas injection dual-fuel engine.
G8 Guidelines X18. Ballast Water, Biofouling and Antifouling: Original Guidelines for Approval of Ballast Water Management Systems, replaced by MEPC.300(72) BWMS Code.
G80ME-C9.5 X90. Marine Engine Specific Model Enumeration: MAN B&W Green Ultra Long Stroke two-stroke engine with 800 millimeter bore in compact ME-C electronic configuration.
G80ME-GI X90. Marine Engine Specific Model Enumeration: MAN B&W Green Ultra Long Stroke 800 millimeter bore two-stroke gas injection dual-fuel engine for large tanker and container vessels.
G9 Guidelines X18. Ballast Water, Biofouling and Antifouling: Procedure for approval of BWMS that make use of Active Substances.
G95ME-C10.5 X90. Marine Engine Specific Model Enumeration: MAN B&W Green Ultra Long Stroke two-stroke engine with 950 millimeter bore in higher mark compact ME-C configuration for ultra large container vessels.
G95ME-C9.5 X90. Marine Engine Specific Model Enumeration: MAN B&W Green Ultra Long Stroke two-stroke engine with 950 millimeter bore in compact ME-C electronic configuration used on large container ships.
GA (General Average) X17. Chartering, Shipbroking and Freight Trading: Loss-sharing mechanism for sacrifices and expenditures incurred for common safety, governed by York-Antwerp Rules.
Gabbiana X124. Dredging Industry and Reclamation Contractors: Italian Fincantieri-built dredger for Naples port.
Gabion mattress X42. Offshore Wind Installation and Cable Lay: Wire mesh containment for stone used in onshore cable trenching and landfall protection.
Gabon X7. Flag State, Port State Control and Detention Vocabulary: Flag State occasionally appearing on PSC underperforming lists.
Gabon Flag X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: An African registry intermittently named in dark-fleet reporting after rapid intake of aged tonnage.
Gabon Ship Registry X98. Ship Registries and Flag States: National registry administered by the Gabonese Merchant Marine Administration.
Gabriella X85. Ferries, Ro-Pax Operators and Routes: Viking Line ro-pax built 1992 deployed on Helsinki to Stockholm via Mariehamn.
GAC Group X86. Port Agency, Husbandry and Disbursement: Gulf Agency Company, a global shipping, logistics, and marine services group founded in Kuwait in 1956.
GAC Hub Services X86. Port Agency, Husbandry and Disbursement: GAC offerings at bunker and crew change hubs across the Middle East and Asia.
GAC Husbandry Services X86. Port Agency, Husbandry and Disbursement: GAC Group's bundled crew and supply services for visiting vessels.
GAC Port Agency X86. Port Agency, Husbandry and Disbursement: GAC's port call agency network across multiple regions.
GAC Ship Supply X120. Marine Catering, Provisions and Ship Chandlers: Dubai headquartered division of GAC Group, present in 50-plus countries for provisions and bonded stores.
GAC Shipping Services X86. Port Agency, Husbandry and Disbursement: Broader shipping services line of GAC including agency and project work.
GACC X6. Container, Intermodal and Trade Codes: General Administration of Customs of the People's Republic of China.
Gadani X28. Ship Recycling and End-of-Life: Pakistan ship recycling beach in Balochistan, about 50 km west of Karachi.
Gadani Ship Breaking Yard X50. Ship Recycling, Demolition and Hong Kong Convention: The Pakistani recycling cluster on the Balochistan coast approximately 50 kilometers north of Karachi, with about 130 plots historically permitted.
Gadani Tragedy 2016 X118. Ship Recycling Yards, Beaches and Regulation: Fire and explosion on the FPSO Aces (ex-Asean Liberty) on 1 November 2016 at Plot 54 Gadani, killing at least 28 workers, leading to a moratorium on tanker beaching at Gadani.
Gadidae X10. Marine Biology, Fisheries and Oceanography: Family of cod, haddock, pollock, hake-like fishes (in part), and related gadiforms.
Gaeta-class X77. Naval Mine Warfare and Mine Countermeasures: An Italian Navy class of mine countermeasures vessels derived from the Lerici design, built by Intermarine SpA.
Gaff X3. Ship Handling, Seamanship and Deck Vocabulary: Spar supporting the head of a fore-and-aft sail.
Gaff Hook (Tuna Vessel) X87. Fishing Vessels and Fisheries Management: Hand tool used by pole and line and longline crews to bring tuna aboard.
GAFI Maritime Academy X121. Maritime Education, Academies and Universities: Greek private maritime training center in Piraeus.
GAFTA X114. Maritime Arbitration and Shipping Law Firms: Grain and Feed Trade Association, London-based commodity arbitration administrator whose awards are frequently cited in voyage charter cases.
GAFTA 49 X115. Marine Bunker and Cargo Surveying: Standard form contract issued by GAFTA for the carriage of grain in bulk, including survey and sampling provisions.
GAFTA 64 X115. Marine Bunker and Cargo Surveying: Standard form contract issued by GAFTA for the carriage of feedingstuffs in bulk, used in international grain trades.
Gafta arbitration X152. Maritime Arbitration and Dispute Resolution: Grain and Feed Trade Association arbitration, technically commodity rather than maritime but often arising in chartered cargo disputes.
GAFTA Contracts X44. Shipping Indices, FFAs and Freight Markets: Grain and Feed Trade Association physical contracts that drive Panamax and Supramax cargo flows referenced indirectly in FFA analysis.
GAIL (General Average Insurance Loss) X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: Settlement category in marine claims systems tracking insurers' share of GA losses.
GAIL India X134. LNG and LPG Carrier Operators and Containment Systems: Indian gas company with chartered LNG carrier fleet for US Sabine Pass and Cove Point offtake.
Gakkel Ridge X133. Polar Research Vessels and Polar Code Regimes: Ultraslow Arctic mid-ocean ridge, surveyed by Polarstern Healy 2007 expedition.
Galapagos X35. Yacht and Superyacht Industry: Ecuadorian archipelago and protected cruising ground requiring special permits and licensed naturalist guides.
Galapagos Islands X10. Marine Biology, Fisheries and Oceanography: Pacific archipelago and marine reserve straddling the equator off Ecuador.
Galapagos Islands PSSA X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The Particularly Sensitive Sea Area designated by IMO in 2005 protecting waters around the Galapagos archipelago.
Galápagos Marine Reserve X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: 198,000 km2 protected area off Ecuador subject to strict spatial planning that restricts subsea cable and pipeline routing.
Galapagos PSSA X18. Ballast Water, Biofouling and Antifouling: Particularly Sensitive Sea Area designated by IMO in 2005 with associated Areas To Be Avoided.
Galati Shipyard X58. Shipbuilding Yards and Construction: Damen-owned Romanian yard on the Danube building ferries, OPVs, and offshore support vessels.
Galaxy X85. Ferries, Ro-Pax Operators and Routes: Tallink ro-pax built 2006 deployed on Baltic routes.
Galaxy of Bridge Equipment F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Generic reference to integrated bridge systems.
Galaxy Tide D2. Hydrography, tides, waves, bathymetry and marine geology: Not used; placeholder removed.
Galbraith's Ltd X71. Shipbrokers and Brokerage Firms: London shipbroker founded in 1844, active in dry, tanker, gas, sale and purchase, and offshore.
Galbraiths X161. Shipbroking, Freight Derivatives, and Baltic Indices: London-based shipbroker founded in 1844 in Glasgow, active in dry, wet, gas, S&P, and newbuilding desks.
Gale X3. Ship Handling, Seamanship and Deck Vocabulary: Wind of force 8 on the Beaufort scale.
Galeazzi X82. Saturation Diving and Offshore Diving Operations: Italian manufacturer of historic standard diving dress helmets.
Galena X103. US Inland Waterway Towing and Barge: An Illinois town on the Mississippi tributary Galena River, historically a lead shipping point.
Galena Park Bunker Terminal X72. Bunkering Hubs and Bunker Suppliers: Houston ship channel terminal at Galena Park used by Kinder Morgan and Magellan for bunker grade storage.
Galeon Andalucia X128. Sail Training Ships and Tall Ship Associations: Spanish 17th century Spanish galleon replica built 2009 at Punta Umbria, 51 m length, operated by Fundacion Nao Victoria for heritage sail training and port visits.
Galerkin Method X54. Naval Architecture Software and IACS Rules: Weighted residual technique underlying many finite element implementations in Abaqus and Ansys.
Galicia X85. Ferries, Ro-Pax Operators and Routes: Brittany Ferries E-Flexer class ro-pax delivered 2020 deployed on Portsmouth to Bilbao and Santander.
Galilee Fishery (Sea of) X87. Fishing Vessels and Fisheries Management: Inland commercial fishery for tilapia and sardines, regulated by Israel.
Galilee Mariners' Lounge X102. Seafarer Welfare and Maritime Charities: Common name pattern for seafarers' lounges operated by maritime ministries in North American ports.
Galileo E3. Technology, digitalization and smart shipping: EU GNSS constellation.
Galileo (GNSS) B3. Nautical Science: European Global Navigation Satellite System.
Galileo (Spanish) X128. Sail Training Ships and Tall Ship Associations: Several heritage schooners carry the name Galileo; Spanish Galileo (1932) operates as a Mediterranean charter and youth sail vessel.
Galileo Galilei X124. Dredging Industry and Reclamation Contractors: Boskalis Mega Hopper class TSHD of 28,500 m3 capacity.
Galileo Receiver X168. Bridge Electronics: Radar, ECDIS, GMDSS, and IBS: European GNSS receiver covered by IEC 61108-3.
Galileo Return Link Service X95. GMDSS Equipment and Survival Craft Communications: Service operated by the European Union Agency for the Space Programme transmitting an acknowledgment from the Cospas-Sarsat ground segment to a second generation beacon via the Galileo navigation…
Galileo SAR X80. Maritime Search and Rescue Coordination: SAR payload hosted on Galileo MEOSAR satellites by the European Commission.
Gallagher Specialty Marine X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: Marine division of Arthur J. Gallagher providing broking and claims advocacy across hull, cargo, and P&I lines.
Gallant Yachts X125. Superyacht Industry, Builders and Brokers: Smaller specialist broker.
Galle X127. Maritime Security, Anti-Piracy and PMSCs: Sri Lankan port that became the principal eastern PCASP embarkation hub after 2010.
Galle Floating Armoury X22. Piracy, Maritime Security and Armed Protection: Sri Lanka based weapons storage vessel widely used by Indian Ocean PCASP teams.
Galleas X39. Pre-1900 Maritime History: A large oared and sailing warship of the sixteenth century combining galley and galleon features.
Galleas, Dutch F1. Maritime History: Coasting vessel of the North Sea.
Galleass F1. Maritime History: Hybrid oared-and-sailed warship type used by Venice at Lepanto.
Galleon F1. Maritime History: Iberian sailing warship and treasure carrier of the sixteenth and seventeenth centuries.
Galleon Wrecks of the Manila Run F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Wrecks such as San Diego and Nuestra Senora de Atocha.
Galley F1. Maritime History: Oared Mediterranean warship type from antiquity into the seventeenth century.
Galley Equipment X120. Marine Catering, Provisions and Ship Chandlers: IMPA section 17 sub-class 174 covering ovens, ranges, mixers, and storage.
Galley extract X19. Engine Room Watchkeeping and UMS Operations: Ventilation duct removing cooking fumes through a grease filter and fire damper.
Galley Fire Suppression X120. Marine Catering, Provisions and Ship Chandlers: SOLAS Chapter II-2 Regulation 10.6.4 requirement for fixed system over deep fat cooking equipment.
Galley Hood X41. Cruise Ship Public Health and VSP/USPH: Exhaust canopy over cooking equipment whose grease filters require daily cleaning under VSP Item 24.
Galley Hood (Grease Filter) X120. Marine Catering, Provisions and Ship Chandlers: Baffle filter type required to minimize residue ignition risk under SOLAS II-2.
Galley hygiene inspection X36. Shipboard Medical, Telemedicine and Seafarer Health: Periodic inspection under MLC 2006 Regulation 3.2 food and catering.
Galley Inspection X5. Marine Surveying and Inspection: MLC and flag state inspection of galley hygiene and equipment.
Galley Standard (ILO C188) X87. Fishing Vessels and Fisheries Management: Provisions of Annex III on food preparation and storage for fishing vessel crews.
Galley Steward X41. Cruise Ship Public Health and VSP/USPH: Crew member responsible for food handling and sanitation under the chef hierarchy and the ship environmental officer.
Galley training X21. STCW Certificates, Crewing and Seafarer Welfare: Catering and food handling instruction supporting ship's cook qualification under MLC 3.2.
Galloo Ghent X50. Ship Recycling, Demolition and Hong Kong Convention: A Belgian recycling facility on the Ghent canal listed on the EU List of approved ship recycling facilities, owned by the Galloo group.
Galloo Recycling X118. Ship Recycling Yards, Beaches and Regulation: Belgian EU-listed ship recycler at Ghent, with quayside dismantling for inland and coastal tonnage.
Galloper X123. Offshore Wind Installation Vessels and Operators: 353 MW UK wind farm commissioned 2018, RWE operated, 56 Siemens SWT-6.3-154 turbines.
Galp Marine X72. Bunkering Hubs and Bunker Suppliers: Portuguese marine fuels supplier with operations at Sines, Lisbon, Leixoes, and Algeciras.
Galvanic anode B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Zinc/aluminum anode per ASTM B418/F1182.
Galvanic Battery Removal X28. Ship Recycling and End-of-Life: Decommissioning of cathodic protection systems and removal of sacrificial anodes.
Galvanic Cell X100. Marine Cathodic Protection and Anodes: A corrosion cell formed by two dissimilar metals in electrical contact within an electrolyte.
Galvanic Corrosion X92. Marine Steel Suppliers and Shipbuilding Plate: Accelerated corrosion of a less noble metal in electrical contact with a more noble metal in an electrolyte.
Galvanic Couple X100. Marine Cathodic Protection and Anodes: Two dissimilar metals connected electrically in an electrolyte that establish an anode and cathode of differing potential.
Galvanic series X45. Marine Paints, Coatings and Antifouling: Ranking of metals by electrochemical potential in seawater, used to design CP systems.
Galvanized Hinge X83. ISO Container Manufacturing and Leasing: Hot-dipped galvanized hinge assembly on container door for corrosion resistance.
Galveston X24. Cruise, Passenger Ship and Ferry Operations: Major US Gulf Coast cruise homeport in Texas.
Galveston Bar Pilots X32. Marine Pilotage and Pilot Operations: Texas state pilots' association handling vessels at Galveston Bar and inbound to Houston Ship Channel.
Galveston Cruise Terminal X164. Cruise Industry, Brands, Ship Classes, and Terminals: The Port of Galveston cruise facility in Texas, the fourth busiest US cruise homeport, serving Carnival, Royal Caribbean, Disney, and Norwegian.
Galveston Texas A&M X121. Maritime Education, Academies and Universities: See Texas A&M Maritime Academy.
Galveston-Texas City Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Texas state-commissioned pilots serving Galveston, Texas City, and the upper Houston Ship Channel approaches.
Galvotec Alloys X100. Marine Cathodic Protection and Anodes: A US-based manufacturer of zinc and aluminum sacrificial anodes.
Galway Hooker F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Traditional Connemara sailing boat with cultural significance.
Gama, Vasco da X39. Pre-1900 Maritime History: Portuguese navigator whose voyage of 1497 to 1499 opened the direct sea route from Europe to India.
GaN X11. Naval Vessels, Warship Systems and Naval Architecture: Gallium nitride semiconductor used in modern AESA T/R modules.
Gang X15. Ports, Terminals and Stevedoring: stevedore work crew assigned to a hatch or piece of equipment.
Gang, stevedoring X76. Stevedoring, Lashing and Cargo Securing: Working unit of dockworkers assigned to load, discharge, or lash cargo.
Ganges X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: The Indian river forming part of National Waterway 1 from Haldia to Varanasi, 1,620 km, managed by IWAI.
Ganghwa-class X77. Naval Mine Warfare and Mine Countermeasures: A Republic of Korea Navy minesweeper class built in the late 1980s.
Gangion X87. Fishing Vessels and Fisheries Management: Branch line on a longline carrying a single baited hook, also called a snood.
Gangway F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Movable ramp or bridge for boarding.
Gangway Cutting Sequence X50. Ship Recycling, Demolition and Hong Kong Convention: The standard removal order for accommodation gangways prior to deckhouse dismantling.
Gangway Hoist X94. Port Machinery and Quay Equipment Makers: Davit and winch arrangement on the vessel used to raise, lower, and stow the accommodation gangway.
Gangway ID X24. Cruise, Passenger Ship and Ferry Operations: Photo and key-card identification check at the gangway for every guest movement.
Gangway System X14. Offshore Oil and Gas Marine Operations: Motion-compensated walkway for W2W transfers (e.g., Ampelmann, Uptime).
Gangway tip X59. Offshore Wind O&M, CTVs and SOVs: Distal end of the gangway resting against the turbine landing, maintained stationary by motion compensation.
Gangway Watch Coordination X86. Port Agency, Husbandry and Disbursement: Agreement between agent, vessel, and security firm on gangway monitoring.
Gangway Watch Procedure X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The ISPS-aligned watch procedure verified at every SIRE inspection.
Gannet X10. Marine Biology, Fisheries and Oceanography: Large plunge-diving seabird of the genus *Morus*.
Gantline X3. Ship Handling, Seamanship and Deck Vocabulary: Single rope rove through a single block aloft for hoisting work.
Gantry X169. Container Terminal Cranes, Yard Equipment, and Lashing: Bridge or frame supported by two leg sets that travel on parallel rails, the basic structural form of STS, RTG, RMG, and ASC cranes.
Gantry container crane C4. Ports, terminals and coastal/marine civil engineering: STS quay crane.
Gantry crane C4. Ports, terminals and coastal/marine civil engineering: Rail-mounted gantry such as STS, RMG, or RTG.
Gantry Lift X104. Project Cargo Forwarders and Heavy Transport: Lift performed by a portal frame on rails rather than a mobile crane.
Gantry Strand Jack X167. Major Salvage Companies, Wreck Removals, and Equipment: Hydraulic lifting device used in parbuckling Costa Concordia and similar large wreck operations.
Gantry Tie-Down X169. Container Terminal Cranes, Yard Equipment, and Lashing: Pin or hook that secures an STS crane to embedded sockets in the quay during storms and tsunami advisories.
Gantry Travel X46. Container Terminal Operations: The longitudinal motion of a portal crane along its rails or wheel paths.
Gantry Winch X79. Tugs and Towage Industry: Towing winch mounted on raised structural framework to optimize lead angles.
Gantt chart X15. Ports, Terminals and Stevedoring: vessel berthing schedule visualization in BAS software.
Gap X71. Shipbrokers and Brokerage Firms: Negotiating distance between owner's last offer and charterer's last counter.
Gap Analysis X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents: The required step in implementing MSC.428(98) to compare current SMS controls against recognized cyber frameworks.
GAP Analysis (Cape Town Agreement) X87. Fishing Vessels and Fisheries Management: National assessment comparing existing fishing vessel regulations against the agreement's requirements.
GAR X13. Marine Salvage and Wreck Removal: Gross Salvage Reward expressed as a percentage of salved value, common arbitration shorthand.
Garage X35. Yacht and Superyacht Industry: Compartment housing tenders, jet skis, and water toys, often accessed via a hydraulic transom or side door.
Garbage (Annex V) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: All kinds of food wastes, domestic wastes, operational wastes, plastics, cooking oil, incinerator ashes, animal carcasses, fishing gear, e-waste, and cargo residues, except fresh fish and parts…
Garbage Categories X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The ten categories A through K used in the Garbage Record Book under MARPOL Annex V from 1 March 2018.
Garbage chute (weight item) B1. Naval Architecture: Outfitting item entered in weight estimate.
Garbage management (Polar Code) X27. Polar Code, Ice Navigation and Polar Operations: Polar Code Part II-A prohibits discharge of garbage in polar waters with limited exceptions per MARPOL Annex V.
Garbage Management Plan A3. Marine environmental legislation: MARPOL and its annexes: Required under MARPOL Annex V Regulation 10.
Garbage Management Plan (GMP) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The mandatory plan under Annex V Reg 10, applicable to every ship of 100 GT and above and to every ship certified to carry 15 persons or more.
Garbage Management Plan Liaison X86. Port Agency, Husbandry and Disbursement: Agency liaison with reception facilities for MARPOL Annex V residues.
Garbage Receipt X86. Port Agency, Husbandry and Disbursement: Receipt issued by reception facility for waste landed under MARPOL Annex V.
Garbage Record Book A3. Marine environmental legislation: MARPOL and its annexes: Required under MARPOL Annex V Regulation 10.
Garbage Record Book Part I X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The record of garbage operations other than cargo residues, required for ships of 400 GT and above and ships carrying 15 persons or more.
Garbage Record Book Part II X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The record of cargo residues discharge, required for ships carrying solid bulk cargoes, with entries since 1 March 2018.
Garboard strake X3. Ship Handling, Seamanship and Deck Vocabulary: Plank or plate next to the keel.
Gard X53. Marine Insurance, P&I and Hull Clauses: The Norwegian-headquartered Assuranceforeningen Gard, an International Group P&I club founded in 1907, also writing energy and marine liability lines.
Gard Guide X51. Maritime Arbitration, Law and BIMCO Clauses: The leading practitioner reference on P&I cover and charterparty law published by the Norwegian P&I club Gard.
Gard Loss Prevention X126. Marine Oil Spill Response and OPRC Regimes: Norwegian P and I club publishing the Gard Guidance on response collaboration.
GARD Loss Prevention Circulars X146. Port State Control Regimes, MoUs, and Inspection Systems: P&I publications used by PSCOs as background reading on common deficiency patterns.
Gard Marine and Energy X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets: Gard's fixed-premium hull, energy and war risk arm.
Gard Marine and Energy Ltd v China National Chartering Co Ltd (The Ocean Victory) [2017] UKSC 35 X143. Landmark Maritime Law Cases and Doctrines: UK Supreme Court ruled that Kashima was not unsafe in the abstract.
Gard P&I X108. Marine Insurance and P&I Clubs: Assuranceforeningen Gard, founded 1907 in Arendal, Norway, the largest International Group club measured by gross tonnage entered.
Garde-Cotes X130. National Coast Guards and Cutter Fleets: French Coast Guard function spread across Marine Nationale, Gendarmerie Maritime, Affaires Maritimes and Douanes.
Garden City University Maritime Studies X121. Maritime Education, Academies and Universities: Indian institution offering general maritime management courses, not DGS pre-sea approved.
GAREAT X117. Marine Insurance Markets, Captives and Reinsurance: French terrorism reinsurance pool, relevant where French marine interests are insured.
Garment on hanger C3. Logistics, freight forwarding and multimodal trade: GOH, container fitted for hanging garments.
Garmin AIS 800 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Class B SOTDMA transponder marketed by Garmin for recreational use.
Garmin GMR Fantom X89. ECDIS and Bridge Equipment Makers: Solid state pulse compression radar from Garmin for the recreational and light commercial market.
Garmin inReach X95. GMDSS Equipment and Survival Craft Communications: Two way satellite messenger operating over the Iridium constellation with SOS service routed through Garmin Response, not a Cospas-Sarsat beacon.
Garnet X45. Marine Paints, Coatings and Antifouling: Naturally occurring abrasive, often almandite garnet, valued for low dust and recyclability.
Garnet abrasive X165. Marine Coatings, Antifouling, and Hull Husbandry: Almandine mineral grit used as a recyclable, low-dust blasting medium with low embedded chloride content.
Garonne X33. Inland Navigation and Barge Operations: French river navigable below Castets-en-Dorthe with connections to the Canal de Garonne.
Garoupa X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Brazilian station boat term used at Santos and other Brazilian pilot stations.
Garrets International X120. Marine Catering, Provisions and Ship Chandlers: UK based catering management company operating since 1991, headquartered in Reigate, Surrey.
Garry Mason X124. Dredging Industry and Reclamation Contractors: USACE district dredging supervisor archetype.
Gary Works X92. Marine Steel Suppliers and Shipbuilding Plate: US Steel integrated steelmaking complex on Lake Michigan at Gary, Indiana.
Gas Agility X149. Marine Fuels, Bunkering, and Alternative Fuels: An 18,600 m3 LNG bunker vessel operated by Total Marine Fuels Global Solutions out of Rotterdam since 2020, one of the world's largest LBVs.
Gas Analysis X82. Saturation Diving and Offshore Diving Operations: Measurement of oxygen, carbon dioxide, and inert gas fractions.
Gas as fuel X56. LNG/LPG Carriers and IGC Code: Use of cargo vapor or forced vaporized cargo as engine fuel under IGC Code Chapter 16, distinct from the more general IGF Code.
Gas Bank X82. Saturation Diving and Offshore Diving Operations: Cylinder rack supplying breathing gases to the dive system.
Gas broker X71. Shipbrokers and Brokerage Firms: Broker specializing in LNG and LPG carrier chartering and S&P.
Gas carrier C1. Commercial shipping, chartering, economics and finance: Vessel for liquefied gases such as LNG, LPG, ethane, or ethylene.
Gas carrier (LNGC, LEG, LPGC, FGC) B5. Ship Types and Individual Vessels: IGC types.
Gas carrier (LNGC) X149. Marine Fuels, Bunkering, and Alternative Fuels: A purpose-built LNG carrier; some are used as floating storage and reloading units for LNG bunker supply.
Gas Carrier (LPG/LNG/LEG) E4. Cruise, offshore energy and auxiliary/specialised fleets: Specialized liquefied-gas carriers.
Gas Carrier Bunker Stem X72. Bunkering Hubs and Bunker Suppliers: Bunker order on an LNG or LPG carrier including pilot fuel and either MGO or LNG main fuel.
Gas Carrier Code (IGC) Compliance X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The mandatory IMO code for gas carriers whose compliance is verified during SIGTTO and OCIMF inspections.
Gas Carrier Demolition X28. Ship Recycling and End-of-Life: Recycling of LNG and LPG carriers requiring specialized purging of cargo tanks.
Gas Carrier SCR X69. EGCS Scrubbers, SCR and Marine Air Emissions: SCR installation aboard LNG or LPG carriers, often integrated with dual-fuel propulsion.
Gas Carrier Survey X5. Marine Surveying and Inspection: IGC Code specific survey of cargo containment and gas handling systems.
Gas Carrier Vetting X40. Tanker Vetting, SIRE and VIQ: Vetting specific to LNG, LPG, and chemical-gas tankers, drawing on VIQ Chapter 13 and operator-specific gas questionnaires.
Gas Cartridge X75. IMDG Code, Classes, Packing and Segregation: UN 2037 non refillable receptacles for compressed or liquefied gas without release device.
Gas Chromatograph (GC) X20. LNG Operations and Custody Transfer: PVT or Siemens MAXUM analyzer providing online cargo composition for GHV; calibrated to traceable gas standards.
Gas combustion unit X56. LNG/LPG Carriers and IGC Code: Onboard burner that disposes of excess BOG when consumption by main and auxiliary engines is insufficient.
Gas combustion unit (GCU) B2. Marine Engineering: Thermal oxidizer for excess BOG on LNG carriers.
Gas Container X83. ISO Container Manufacturing and Leasing: ISO container designed for the carriage of compressed or liquefied gases under T50 or T75 specifications.
Gas Council pipeline (legacy) X57. Ocean Energy Beyond Wind: Historic offshore pipeline infrastructure in UK waters considered for reuse in CO2 and hydrogen transport.
Gas Cutter X28. Ship Recycling and End-of-Life: Worker performing oxy-fuel cutting of hull plates and structural steel.
Gas detection X19. Engine Room Watchkeeping and UMS Operations: Fixed or portable detectors for hydrocarbons, oxygen, hydrogen sulphide, and CO in machinery and cargo spaces.
Gas Detector X1. Cargo Science, Commodities and Cargo Care: Portable or fixed instrument for O2, LEL, CO, H2S.
Gas Detector (Galley LPG) X120. Marine Catering, Provisions and Ship Chandlers: IMPA 330127 series fixed LPG detector, required where LPG cooking is fitted.
Gas Dispersion Study X20. LNG Operations and Custody Transfer: CFD or empirical analysis required for LNG terminal hazard zone definition (e.g., NFPA 59A).
Gas Exchange Velocity (k) D1. Physical and chemical oceanography and marine meteorology: Rate constant for air-sea gas transfer.
Gas free X56. LNG/LPG Carriers and IGC Code: Condition of a cargo tank verified by measurement to contain less than the permissible flammable and toxic vapor levels for entry.
Gas Free for Hot Work X28. Ship Recycling and End-of-Life: Status permitting cutting and welding in a designated space.
Gas Free Inspection Authority X50. Ship Recycling, Demolition and Hong Kong Convention: A licensed third-party chemist or marine surveyor authorized to issue gas free certificates.
Gas Free Survey X5. Marine Surveying and Inspection: Testing of tank atmospheres for hydrocarbon, oxygen, and toxic gases prior to hot work or entry.
Gas Freeing X20. LNG Operations and Custody Transfer: Replacement of hydrocarbon vapor with inert gas then air to allow tank entry.
GAS FUELLED X8. IACS, Class Rules and Class Notations: DNV notation for ships designed to operate on natural gas fuel.
Gas Injection (GI) X90. Marine Engine Specific Model Enumeration: MAN B&W two-stroke high-pressure gas injection technology enabling diesel-cycle methane combustion with low methane slip.
Gas insulated switchgear X42. Offshore Wind Installation and Cable Lay: Compact medium and high voltage switchgear used inside offshore substations.
Gas Mixing Panel X82. Saturation Diving and Offshore Diving Operations: Manifold blending heliox and oxygen for chamber make-up.
Gas oil X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Distillate fuel including MGO and DMA grades.
Gas Pipeline Tribunal X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Independent body in Australia that adjudicates access disputes on covered offshore pipelines.
Gas Reclaim X82. Saturation Diving and Offshore Diving Operations: Recovery and re-use of exhaled helium after scrubbing.
Gas Reclaim Unit X82. Saturation Diving and Offshore Diving Operations: Skid containing the compressor, scrubber, and storage for reclaimed gas.
Gas Sample Non Pressurized Flammable NOS X75. IMDG Code, Classes, Packing and Segregation: UN 3167, Class 2.1 entry for non pressurized gas samples.
Gas Side Cleaning X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: Removal of carbon and ash deposits from turbocharger turbine blades by water washing or grit blasting.
Gas Storage X82. Saturation Diving and Offshore Diving Operations: High-pressure cylinder banks holding helium, oxygen, and air reserves.
Gas Tanker Advanced X21. STCW Certificates, Crewing and Seafarer Welfare: STCW Regulation V/1-2-2 advanced training for officers with cargo responsibility on gas tankers.
Gas Tanker Basic X21. STCW Certificates, Crewing and Seafarer Welfare: STCW Regulation V/1-2-1 basic training for service on liquefied gas tankers.
Gas Trial X20. LNG Operations and Custody Transfer: Sea trial including first cool-down, gas-up, and cargo machinery testing during newbuild commissioning.
Gas Turbine X132. High-Speed Craft, Hydrofoils and Ferry Operators: Common HSC prime mover, including GE LM2500 on Stena HSS 1500 and Pratt and Whitney FT8 on some Incat hulls.
Gas Turbine Lift X104. Project Cargo Forwarders and Heavy Transport: Heavy lift of a power plant or compressor station gas turbine, often above 300 tonnes.
Gas Vitality X149. Marine Fuels, Bunkering, and Alternative Fuels: An 18,600 m3 LNG bunker vessel operated by TotalEnergies serving the Mediterranean from Marseille-Fos from 2021.
Gas-Fired Boiler X63. Marine Auxiliary Machinery and Pumps: Auxiliary boiler designed to burn boil-off gas, used principally on LNG carriers.
Gas-fired heater X27. Polar Code, Ice Navigation and Polar Operations: Used to keep deck machinery warm in polar service.
Gas-free certificate B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Certificate before hot work in tanks.
Gas-Up X20. LNG Operations and Custody Transfer: Procedure introducing methane to displace inert nitrogen before loading, monitored by methane concentration sensors.
GASCO X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Abu Dhabi National Oil Company subsidiary operating subsea and onshore gas pipelines in the UAE.
Gases Refrigerated Liquid NOS X75. IMDG Code, Classes, Packing and Segregation: UN 3158 oxidizing or other UN entries depending on properties.
Gasket X3. Ship Handling, Seamanship and Deck Vocabulary: Lashing securing a furled sail.
GasLog X134. LNG and LPG Carrier Operators and Containment Systems: NYSE listed LNG carrier owner taken private 2021 by BlackRock Global Energy and Power Infrastructure Fund, fleet of 35 LNGCs.
GasLog Greece X134. LNG and LPG Carrier Operators and Containment Systems: LNG carrier of 174,000 m3 delivered 2016 by Samsung Heavy Industries for GasLog Partners.
GasLog Houston X134. LNG and LPG Carrier Operators and Containment Systems: LNG carrier of 174,000 m3 delivered 2018 by Samsung Heavy Industries for GasLog.
GasLog Ltd X56. LNG/LPG Carriers and IGC Code: Greek LNG carrier owner formerly listed in New York, operating a fleet of TFDE and two-stroke LNG vessels.
GasLog Warsaw X134. LNG and LPG Carrier Operators and Containment Systems: LNG carrier of 180,000 m3 delivered 2019 by Samsung Heavy Industries for GasLog.
GasNaturally X110. LNG Bunkering Infrastructure and Vessels: European industry association promoting natural gas use, referenced in the early naming of dedicated LNG bunker projects such as the Coral Methane.
Gasoil B2. Marine Engineering: Marine gasoil (MGO) per ISO 8217 DMA.
Gasoil Swap X44. Shipping Indices, FFAs and Freight Markets: Derivative on middle distillate prices used by tanker operators to hedge product-related earnings exposure.
Gasoline X1. Cargo Science, Commodities and Cargo Care: High-vapor-pressure Class 3 cargo; static-electricity precautions.
Gasoline UN 1203 X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: Motor spirit including blended motor spirit, Class 3, packing group II.
Gassco X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Norwegian operator of the integrated gas transport system from the Norwegian shelf to continental Europe.
Gassing-up X56. LNG/LPG Carriers and IGC Code: Replacement of inert gas in cargo tanks with cargo vapor prior to cooldown and loading.
Gastech X119. Maritime Conferences, Trade Shows and Awards: Annual gas industry conference and exhibition founded 1972, rotating among global hubs and organized by dmg events.
Gastech Awards X119. Maritime Conferences, Trade Shows and Awards: Annual recognition of innovation, leadership, and sustainability presented at Gastech.