Glossary

Maritime glossary, terms beginning with G (page 3)

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

Showing 250 of 1586 terms (page 3 of 7).

Genuine Link X98. Ship Registries and Flag States: UNCLOS Article 91 requirement that there be a real connection between a state and the ships it registers.
GENWAYBILL X17. Chartering, Shipbroking and Freight Trading: BIMCO non-negotiable sea waybill.
GEO X68. Maritime Satcom and Telecommunications: Common abbreviation for geostationary orbit.
Geo Asia X124. Dredging Industry and Reclamation Contractors: Survey vessel chartered for pre-dredge bathymetric work.
Geo-instrumentation X124. Dredging Industry and Reclamation Contractors: Pore-pressure and settlement instrumentation in reclamation cells to monitor consolidation.
Geo-stationary satellite B3. Nautical Science: Satellite at 35,786 km, used for Inmarsat C.
Geobag X175. Port Engineering, Dredging, Breakwaters, and Quays: Large geotextile bag filled with sand or grout, used for scour protection, breakwater cores, and temporary works.
Geocentric Datum D2. Hydrography, tides, waves, bathymetry and marine geology: Datum referenced to Earth's center of mass, such as WGS 84.
GeoCollect (RightShip) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: A RightShip data ingestion service feeding vessel position and port call data into risk algorithms.
Geodatastyrelsen X73. Marine Hydrography, Charting and ENC: The Danish name of the Danish Geodata Agency (GST).
Geodesy D2. Hydrography, tides, waves, bathymetry and marine geology: Science of measuring Earth's shape, gravity, and rotation.
Geodetic datum X10. Marine Biology, Fisheries and Oceanography: Reference framework for positions on the Earth's surface.
Geodetic GPS Tide Gauge D5. Coastal processes, sea-level, cryosphere and ocean observation science: Tide gauge whose benchmark position is monitored by GPS.
Geodis X104. Project Cargo Forwarders and Heavy Transport: Paris-headquartered logistics group founded by SNCF in 1991, with a Projects vertical.
Geodis Container Repair X83. ISO Container Manufacturing and Leasing: Container repair and depot services provided by Geodis Logistics at several global hubs.
Geodis Projects X104. Project Cargo Forwarders and Heavy Transport: Project industrial division of Geodis covering oil, gas, and renewables.
Geofence X109. Maritime Autonomous Surface Ships and MASS Code: A virtual boundary that constrains where an autonomous vessel is permitted to operate, often enforced in trial areas.
Geofencing E1. Maritime security, geopolitics and risk: Virtual perimeter for AIS or fleet management alerts.
Geographic Cell Limit X73. Marine Hydrography, Charting and ENC: The latitude and longitude bounds of an ENC cell.
Geographic Combatant Command E2. Naval, defence and maritime law enforcement: US area command (e.g., INDOPACOM, CENTCOM).
Geographic Constraint Clause X83. ISO Container Manufacturing and Leasing: Lease clause restricting the regions where a leased container may operate.
Geographic information system X59. Offshore Wind O&M, CTVs and SOVs: Digital mapping environment used by O&M planners to manage assets, cables, and exclusion zones.
Geographic Information System (GIS) MSP Tool X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Spatial-analysis platform used by planners to overlay marine activities, cables, and pipelines.
Geographic rotation C1. Commercial shipping, chartering, economics and finance: Sequence of load and discharge ports following a logical geography.
Geographical position (GP) X16. Nautical Science, Navigation and COLREGs: Point on Earth directly beneath a celestial body.
Geographical range X16. Nautical Science, Navigation and COLREGs: Distance to the geographic horizon from a given height.
Geographical Rotation X17. Chartering, Shipbroking and Freight Trading: Requirement that loading or discharging ports be called in geographic order.
Geographical Sub-Area (GFCM) X87. Fishing Vessels and Fisheries Management: Statistical and management units of the GFCM covering the Mediterranean and Black Sea.
Geoid D2. Hydrography, tides, waves, bathymetry and marine geology: Equipotential surface of Earth's gravity field approximating mean sea level.
Geoidal Undulation D2. Hydrography, tides, waves, bathymetry and marine geology: Difference between geoid and reference ellipsoid heights.
Geoje Island X113. Drydock and Ship Repair Yards: Korean island hosting Hanwha Ocean and Samsung Heavy Industries shipyards, two of the world's largest shipbuilding and repair sites.
Geollect X78. Voyage Optimization and Vessel Performance Software: A geospatial intelligence company providing maritime risk and analytics services using vessel tracking and contextual data.
Geological storage complex X57. Ocean Energy Beyond Wind: Combined storage reservoir, primary seal, and surrounding rock used to retain injected CO2 offshore.
Geomagnetic equator B3. Nautical Science: Magnetic equator differing from geographic.
Geomagnetic pole X16. Nautical Science, Navigation and COLREGs: Axis of the best-fit dipole to Earth's magnetic field.
Geometric Calibration X155. Marine Surveying Practice and Cargo Inspection: A tank capacity verification method based on physical measurement of geometry, used when strapping tables are challenged.
Geometric Dilution of Precision X109. Maritime Autonomous Surface Ships and MASS Code: A GNSS quality metric tracked by autonomy software to detect periods of degraded positioning.
Geometric Dilution of Precision (GDOP) B3. Nautical Science: GNSS position-accuracy metric.
Geometric mooring X42. Offshore Wind Installation and Cable Lay: Catenary mooring layout typical of semi-submersible floating wind platforms.
Geometric pitch X38. Propellers, Stern Gear and Shaft Lines: Theoretical advance per revolution if the blade moved through a solid medium without slip.
Geomorphology (marine) X10. Marine Biology, Fisheries and Oceanography: Study of the form and origin of seafloor features.
Geophysical Mobile Survey Set X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Multibeam, sub-bottom profiler, sidescan sonar, and magnetometer suite deployed on cable and pipeline route surveys.
Geophysical survey X42. Offshore Wind Installation and Cable Lay: Offshore site investigation using sub-bottom profilers, magnetometers, side scan sonar, and multibeam echo sounders.
Geopolitical Premium X44. Shipping Indices, FFAs and Freight Markets: Risk-driven uplift in tanker and dry bulk FFA prices reflecting expectations of conflict, sanctions, or chokepoint disruption.
Geopolitical Risk Premium E1. Maritime security, geopolitics and risk: Insurance/freight loading reflecting regional instability.
Geopotential Height D1. Physical and chemical oceanography and marine meteorology: Height of a pressure surface above mean sea level adjusted for gravity.
Georg Stage II X128. Sail Training Ships and Tall Ship Associations: Danish full rigged ship built 1934 at Frederikshavn, 39 m length, civilian training ship of Stiftelsen Georg Stages Minde, training Danish merchant marine cadets.
George Bayliss Marine Art F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Twentieth-century British marine artist.
George Brookman Collection F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Notable maritime postcard archive.
George F. Bennett X124. Dredging Industry and Reclamation Contractors: Manson Construction trailing hopper dredger.
George H.W. Bush (USS) CVN-77 X106. Naval Surface Combatants: Tenth and final Nimitz-class aircraft carrier, commissioned 2009.
George III, HMS Royal X39. Pre-1900 Maritime History: First-rate Royal Navy ship of the line launched at Chatham in 1788.
George Lake X114. Maritime Arbitration and Shipping Law Firms: Reference to a notable shipping arbitrator in the LMAA panel.
George Stage (formerly Joseph Conrad) X128. Sail Training Ships and Tall Ship Associations: 1882 Danish three masted full rigged ship, 30 m length, served Danish Marineforeningen and was sold 1934 to Alan Villiers and renamed Joseph Conrad, today a static exhibit at Mystic.
George Town X35. Yacht and Superyacht Industry: Cayman Islands capital and seat of the Cayman Islands Shipping Registry.
George W. Allen X124. Dredging Industry and Reclamation Contractors: USACE survey vessel for Mississippi River dredging operations.
George Washington (USS) CVN-73 X106. Naval Surface Combatants: Sixth Nimitz-class aircraft carrier, commissioned 1992.
Georgia X7. Flag State, Port State Control and Detention Vocabulary: Flag administered by the Maritime Transport Agency of Georgia, frequently on Paris MoU black list.
Georgia Maritime Trade and Transport School X121. Maritime Education, Academies and Universities: Sub-academy under Batumi State Maritime Academy.
Georgia Maritime Transport Agency X98. Ship Registries and Flag States: Flag administration of Georgia, headquartered in Batumi.
Georgia PSC X66. Port State Control and Regional MOUs: Black Sea MOU member State.
Georgian College Owen Sound Great Lakes Campus X160. Maritime Academies, Universities, and STCW Certification: Ontario college delivering Transport Canada accredited Great Lakes domestic marine officer programs.
GEOSAR X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Geostationary segment of Cospas-Sarsat providing near-real-time alerting without Doppler position.
GeoSea X105. Offshore Wind Farm Installation and Vessels: Former offshore renewables brand within DEME Group, now operating as DEME Offshore.
Geosim Series X54. Naval Architecture Software and IACS Rules: Family of geometrically similar models tested at multiple scales to validate scale effect models.
Geostationary Orbit X68. Maritime Satcom and Telecommunications: Circular orbit at approximately 35,786 km altitude where a satellite remains fixed relative to the Earth.
Geostrophic Balance D1. Physical and chemical oceanography and marine meteorology: Balance between Coriolis force and horizontal pressure gradient.
Geostrophic Current D1. Physical and chemical oceanography and marine meteorology: Current resulting from geostrophic balance, common in the ocean interior.
Geostrophic flow X10. Marine Biology, Fisheries and Oceanography: Horizontal current in balance between Coriolis force and the horizontal pressure gradient.
GeoSurv X73. Marine Hydrography, Charting and ENC: Generic shorthand used for geophysical and bathymetric surveys feeding chart production.
Geosynthetic clay liner X175. Port Engineering, Dredging, Breakwaters, and Quays: Factory-manufactured composite of bentonite between geotextiles used to seal disposal cells and reclamation containment.
Geotech G100 X82. Saturation Diving and Offshore Diving Operations: Portable infrared gas analyzer used in diving applications.
Geotechnical campaign X57. Ocean Energy Beyond Wind: Seabed sampling and in situ testing program required for foundation design of marine renewable and CCS facilities.
Geotechnical drilling X42. Offshore Wind Installation and Cable Lay: Site investigation method recovering soil samples for foundation design via CPT and borehole sampling.
Geotechnical Survey Crane X104. Project Cargo Forwarders and Heavy Transport: Soil investigation used to validate ground bearing for a heavy crane setup.
Geotechnical Survey Vessel E4. Cruise, offshore energy and auxiliary/specialised fleets: Vessel performing seabed soil testing.
Geotextile filter X175. Port Engineering, Dredging, Breakwaters, and Quays: Permeable synthetic fabric placed beneath armour or scour protection to prevent loss of underlying fines while allowing drainage.
Geotextile tube X124. Dredging Industry and Reclamation Contractors: Filter-fabric tube filled with slurry, used for beach groin and shoreline structures.
Geothermal gradient (subsea) X57. Ocean Energy Beyond Wind: Vertical temperature change in the seabed, relevant for OTEC heat exchanger design and CCS reservoir behavior.
GeoTIFF X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Tagged Image File Format with embedded geospatial metadata, commonly used to deliver bathymetric surfaces and backscatter mosaics.
Gepard class X11. Naval Vessels, Warship Systems and Naval Architecture: Soviet/Russian Project 11661 light frigate.
Gerald of Wales X39. Pre-1900 Maritime History: Twelfth-century churchman whose accounts describe early Welsh and Irish coastal craft.
Gerald R. Ford (USS) CVN-78 X106. Naval Surface Combatants: Lead ship of the Ford-class aircraft carrier, commissioned 2017.
Gerald R. Ford CVN-78 X11. Naval Vessels, Warship Systems and Naval Architecture: Lead ship of Ford class, commissioned 2017.
Gerald R. Ford-class X62. Naval Warships and Combat Systems: US Navy nuclear-powered aircraft carrier class led by USS Gerald R. Ford (CVN-78).
Gerald R. Ford-class carrier X106. Naval Surface Combatants: US Navy nuclear-powered aircraft carrier class displacing about 100,000 tons, featuring EMALS and AAG.
Gerdau X92. Marine Steel Suppliers and Shipbuilding Plate: Brazilian steel group producing long steel products across the Americas.
German Bight MRCC X80. Maritime Search and Rescue Coordination: MRCC Bremen, the central JRCC for German waters under DGzRS coordination.
German International Ship Register X98. Ship Registries and Flag States: Second register known as ISR enabling reduced manning costs for German-flagged international trading ships.
German KG Crisis X29. Ship Sale and Purchase, Management Contracts and Valuation: 2008 to 2014 collapse of Hamburg KG retail ship funds.
German Lashing X169. Container Terminal Cranes, Yard Equipment, and Lashing: German Lashing Robert Boeck GmbH, maker of twistlocks, lashing bars, turnbuckles, and deck sockets, headquartered in Bremen.
German Lashing Robert Bock GmbH X76. Stevedoring, Lashing and Cargo Securing: Lashing equipment manufacturer based in Bremerhaven, supplying twistlocks, rods, turnbuckles, and lashing services.
German Maritime Arbitration Association (GMAA) X51. Maritime Arbitration, Law and BIMCO Clauses: The Hamburg-based arbitral institution with rules tailored for German seated maritime arbitration.
German Naval Yards Kiel X62. Naval Warships and Combat Systems: German shipbuilder producing surface combatants and patrol craft.
German Navy X77. Naval Mine Warfare and Mine Countermeasures: Operator of the Frankenthal-class Type 332 minehunters and historical user of the Hameln-class drone control ships.
German Seamen's Mission X102. Seafarer Welfare and Maritime Charities: Deutsche Seemannsmission, founded 1881, operating chaplaincies in major German and overseas ports.
German Shipping Bank X49. Ship Finance, Leasing and Maritime Capital Markets: Generic label for HSH Nordbank, NordLB, Commerzbank and Deutsche Schiffsbank during the KG era.
Germanischer Lloyd X54. Naval Architecture Software and IACS Rules: German classification society merged with DNV in 2013 to form DNV GL, now operating as DNV.
Germanischer Lloyd (GL) X8. IACS, Class Rules and Class Notations: former IACS founding member, merged with DNV in 2013.
Germany PSC X66. Port State Control and Regional MOUs: Paris MOU member State; PSC conducted by BG Verkehr.
GES Towing X79. Tugs and Towage Industry: General Estuarial Services-derived towage operations in major estuaries.
GESAMP D3. Marine environmental science, pollution and conservation: Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection.
GESAMP Hazard Profile X93. IBC Code and Chemical Tanker Operations: Multi-column evaluation of a substance's bioaccumulation, aquatic toxicity, human toxicity, irritation, and inhalation hazards.
GESAMP-BWWG X18. Ballast Water, Biofouling and Antifouling: Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection, Ballast Water Working Group, evaluating BWMS active substances.
GESAMP/EHS Working Group X93. IBC Code and Chemical Tanker Operations: Working group within GESAMP evaluating Environmental Hazards of Harmful Substances carried by ships.
Getting to Zero Coalition X34. Decarbonization, Alternative Fuels and Carbon Pricing: Industry alliance hosted by the Global Maritime Forum, Friends of Ocean Action, and the World Economic Forum.
GFCM D4. Fisheries, aquaculture, blue economy and marine resources: General Fisheries Commission for the Mediterranean.
GFI A3. Marine environmental legislation: MARPOL and its annexes: GHG Fuel Intensity, regulatory metric under the IMO Net-Zero Framework agreed at MEPC 83.
GFI (Greenhouse Gas Fuel Intensity) D6. Decarbonization, emissions and alternative fuels: IMO Net-Zero Framework metric (gCO2e/MJ) covering well-to-wake emissions.
GFO (Geosat Follow-On) D5. Coastal processes, sea-level, cryosphere and ocean observation science: US Navy altimetry satellite.
GFW X74. AIS Data, Vessel Tracking and Maritime Intelligence: Global Fishing Watch, a non-profit platform combining AIS and VMS data to monitor commercial fishing activity.
GHA X73. Marine Hydrography, Charting and ENC: Greenwich Hour Angle, an astro-navigation term retained in IHO publications for celestial corrections.
GHA (Greenwich Hour Angle) X16. Nautical Science, Navigation and COLREGs: Angle measured westward from the Greenwich meridian to the hour circle of a body.
Ghana Maritime Authority X98. Ship Registries and Flag States: National flag administration of the Republic of Ghana.
Ghana PSC X66. Port State Control and Regional MOUs: Abuja MOU member State.
Ghana Regional Maritime University X121. Maritime Education, Academies and Universities: RMU in Nungua, Accra, founded 2007 by the five Anglophone West African nations, offering Nautical Science, Marine Engineering and Port Management.
GHEOS X129. Hydrographic Offices, Survey Vessels and Marine Cartography: General Hydrographic Equipment Office Standard, an internal procurement reference used by several navy hydrographic services.
GHESQUIERE Marine Spatial Plan X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Belgian federal MSP for the North Sea covering the period 2020-2026, defining cable corridors and wind zones.
GHG Emissions Rating X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The numeric and letter combination summarizing a vessel's design or operational CO2 intensity.
GHG Emissions, Demolition X50. Ship Recycling, Demolition and Hong Kong Convention: The greenhouse gas footprint of recycling operations, increasingly tracked under yard environmental reporting.
GHG fuel standard X34. Decarbonization, Alternative Fuels and Carbon Pricing: Lifecycle GHG intensity limit on marine fuels, central to the IMO Net-Zero Framework.
GHG Intensity X69. EGCS Scrubbers, SCR and Marine Air Emissions: Well-to-wake greenhouse gas emission intensity used in FuelEU Maritime accounting.
GHG Intensity (FuelEU) B2. Marine Engineering: gCO2eq/MJ metric per FuelEU Maritime.
GHG protocol X15. Ports, Terminals and Stevedoring: emissions reporting framework adopted by ports under Scope 1/2/3.
GHG Rating X40. Tanker Vetting, SIRE and VIQ: See RightShip GHG Rating.
GHG Rating (RightShip) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The A through G band assigned by RightShip indicating relative CO2 efficiency of a vessel compared to peers of the same size and type.
GHG Service (Lloyd's Register) X78. Voyage Optimization and Vessel Performance Software: A greenhouse gas accounting service from Lloyd's Register supporting verification of fuel use and emissions for regulatory and voluntary frameworks.
GHG Strategy 2023 (IMO) D6. Decarbonization, emissions and alternative fuels: Revised IMO strategy targeting net-zero emissions around 2050.
Ghost X3. Ship Handling, Seamanship and Deck Vocabulary: Sail very slowly in a light air.
Ghost Cell Method X54. Naval Architecture Software and IACS Rules: Boundary treatment used in some immersed boundary CFD solvers for ship motions.
Ghost Fishing D3. Marine environmental science, pollution and conservation: Continued capture of marine animals by lost or abandoned gear.
Ghost Fleet X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: A synonym for dark fleet, often used in EU and UK reporting.
Ghost Gear D4. Fisheries, aquaculture, blue economy and marine resources: Lost or abandoned fishing gear.
GHP (Good Hygiene Practice) X120. Marine Catering, Provisions and Ship Chandlers: Prerequisite program underpinning HACCP, mandatory under EC 852/2004 Annex I.
GHRSST D1. Physical and chemical oceanography and marine meteorology: Group for High Resolution Sea Surface Temperature analyses.
GHS X54. Naval Architecture Software and IACS Rules: General HydroStatics, naval architecture stability software from Creative Systems used for intact and damage stability.
GHS (Globally Harmonized System) X120. Marine Catering, Provisions and Ship Chandlers: UN labeling system applied to galley and store cleaning chemicals.
GHS Compliant Documentation X86. Port Agency, Husbandry and Disbursement: Documentation prepared in line with the Globally Harmonized System for chemicals.
GHV (Gross Heating Value) X20. LNG Operations and Custody Transfer: Energy released per unit mass or volume on combustion of fuel and condensation of water vapor; reference for sales billing.
GI WACAF X126. Marine Oil Spill Response and OPRC Regimes: Global Initiative for West, Central and Southern Africa, joint IMO and IPIECA capacity building program.
GIA (Joint Hull Committee Gulf Listing) E1. Maritime security, geopolitics and risk: JWC-listed area triggering AP premium.
GIANT (Gulf of Aden Internationally Recommended Transit Corridor) E1. Maritime security, geopolitics and risk: Patrolled transit corridor managed by CMF.
Gibraltar X35. Yacht and Superyacht Industry: British Overseas Territory in the Red Ensign Group with a yacht registry.
Gibraltar Anchorage X72. Bunkering Hubs and Bunker Suppliers: Bunker anchorage off the Rock of Gibraltar served by Cepsa, Vemarsa, Peninsula Petroleum, and Shell Gibraltar.
Gibraltar Bay X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: British Overseas Territory anchorage where Cepsa, Vemaoil, and Peninsula Petroleum supply STS bunkers in competition with adjacent Algeciras.
Gibraltar Bunker Code of Practice X72. Bunkering Hubs and Bunker Suppliers: Operational code issued by the Gibraltar Port Authority governing bunker barge operations in British Gibraltar Territorial Waters.
Gibraltar LNG X56. LNG/LPG Carriers and IGC Code: Small-scale LNG storage and regasification facility at Gibraltar serving the power station.
Gibraltar Maritime Administration X7. Flag State, Port State Control and Detention Vocabulary: GMA, British Red Ensign register based in Gibraltar.
Gibraltar Maritime Heritage F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Strategic-port museum collections.
Gibraltar Port Authority X72. Bunkering Hubs and Bunker Suppliers: Authority licensing bunker suppliers in British Gibraltar Territorial Waters.
Gibraltar Ship Registry X98. Ship Registries and Flag States: Category 1 Red Ensign register operating as a British Overseas Territory register.
Gibraltar Shipping Registry (GSR) X156. Superyacht Industry, Builders, and Yacht Charter Market: Red Ensign Category 1 registry operated by the Gibraltar Maritime Administration, used for both commercial and private yachts.
GibraltarHamburg Range X44. Shipping Indices, FFAs and Freight Markets: Geographical delivery range used in Baltic Panamax and Capesize time charter route definitions.
Gibsea X84. Yacht Racing, Regattas and Sailing Governance: A French production cruiser-racer brand once active in club racing.
Gibson Dunn X114. Maritime Arbitration and Shipping Law Firms: International firm with an admiralty arbitration practice in London and Singapore.
Gibson Shipbrokers X161. Shipbroking, Freight Derivatives, and Baltic Indices: London-based tanker, gas, and S&P broker founded in 1884 with a flagship weekly tanker market report.
GIE Annual Conference X119. Maritime Conferences, Trade Shows and Awards: Gas Infrastructure Europe meeting held annually since 2005.
GIEK X49. Ship Finance, Leasing and Maritime Capital Markets: Norwegian export credit guarantee agency, since merged into Eksfin.
Giga yacht X125. Superyacht Industry, Builders and Brokers: Informal term for yachts above 100 m length overall.
Gigayacht X35. Yacht and Superyacht Industry: Informal term for a yacht over 100 m in length.
Giglio Island X141. Marine Salvage Industry and Wreck Removal Contractors: Tuscan island where Costa Concordia capsized, parbuckling site for the 2013 lift.
Giglio, Isola del X167. Major Salvage Companies, Wreck Removals, and Equipment: Tuscan island off which Costa Concordia grounded on 13 January 2012, the focal point of the 2012 to 2014 wreck removal.
GIIGNL X20. LNG Operations and Custody Transfer: International Group of Liquefied Natural Gas Importers, publisher of the LNG Custody Transfer Handbook (current edition 6.1, 2024).
GIIGNL Custody Transfer Handbook X20. LNG Operations and Custody Transfer: Industry reference for LNG metering, sampling, GHV, density, and quantity determination.
Gilat X68. Maritime Satcom and Telecommunications: Israeli ground equipment vendor supplying VSAT platforms and electronically steered antennas used in maritime networks.
Gill Net X87. Fishing Vessels and Fisheries Management: Vertical panel of netting set in water to entangle fish by the gills.
Gill WindSonic X89. ECDIS and Bridge Equipment Makers: Ultrasonic anemometer from Gill Instruments widely used as a marine wind sensor.
Gillnet X10. Marine Biology, Fisheries and Oceanography: Vertical panel of net that captures fish by entanglement around the gills.
Gillnetter X87. Fishing Vessels and Fisheries Management: Vessel rigged with net hauler and reel to deploy and retrieve gillnets.
Gimbal X14. Offshore Oil and Gas Marine Operations: Pivot supporting jack-up leg-to-hull connection or crane base.
Gimbals X3. Ship Handling, Seamanship and Deck Vocabulary: Pivoted rings keeping an instrument level.
Gimi FLNG X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: BW Offshore-owned converted Moss-type LNG carrier serving as FLNG on the BP Greater Tortue Ahmeyim project.
Gioia Tauro X138. Global Container Terminal Operators and Port Equipment: Italian transshipment hub operated by Medcenter Container Terminal, MSC's TIL subsidiary holding 50 percent stake.
Gipsy X3. Ship Handling, Seamanship and Deck Vocabulary: See gypsy.
Girassol X14. Offshore Oil and Gas Marine Operations: Deepwater Angolan field (Total) using FPSO and buoyancy can risers.
Girder Bridge Ramp X104. Project Cargo Forwarders and Heavy Transport: Heavy ramp formed of girders used to span a step between quay and vessel.
Girder Strength X54. Naval Architecture Software and IACS Rules: Hull girder longitudinal strength governed by IACS UR S11 and S11A.
Girt X3. Ship Handling, Seamanship and Deck Vocabulary: Held fast by a chain or cable so that the vessel cannot ride freely.
GIS X73. Marine Hydrography, Charting and ENC: Geographic Information System, the broader software family from which ENC production systems derive.
GIS (Greenland Ice Sheet) X27. Polar Code, Ice Navigation and Polar Operations: Continental ice sheet covering most of Greenland; principal North Atlantic iceberg source.
GIS for Hydrography D2. Hydrography, tides, waves, bathymetry and marine geology: Geographic information systems applied to maritime data.
Gisan Shipyard X113. Drydock and Ship Repair Yards: Turkish builder in the Tuzla area producing tankers, chemical carriers, and offshore vessels.
GISIS A1. The IMO and the international regulatory framework: Global Integrated Shipping Information System, IMO's public and restricted-access database platform.
GISIS (Global Integrated Shipping Information System) X146. Port State Control Regimes, MoUs, and Inspection Systems: The IMO database aggregating ship particulars, casualties, and PSC information.
GISIS Casualty Module A7. Compliance, certification and enforcement: Database of marine casualties under Casualty Investigation Code.
GISIS PSC Module A7. Compliance, certification and enforcement: Database of inspections and detentions.
Give-way vessel X3. Ship Handling, Seamanship and Deck Vocabulary: Vessel required to keep out of the way under the collision regulations.
GIWACAF X126. Marine Oil Spill Response and OPRC Regimes: Common spelling variant of the West Africa capacity building program.
GIWW X33. Inland Navigation and Barge Operations: Gulf Intracoastal Waterway, sheltered inland route from Brownsville, Texas, to Carrabelle, Florida, about 1,300 miles.
GIWW (Gulf Intracoastal Waterway) X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: The 1,300 mile sheltered US waterway from Brownsville, Texas to Saint Marks, Florida, carrying about 100 million tons of cargo per year.
GL Approval X83. ISO Container Manufacturing and Leasing: Approval mark issued by Germanischer Lloyd before its merger into DNV for container type approval.
GL Noble Denton X43. Marine Surveying and Warranty Surveying: The legacy brand of Germanischer Lloyd's noble Denton consulting and warranty surveying arm, now part of DNV Energy Systems.
GL-VOS X76. Stevedoring, Lashing and Cargo Securing: Operational software lineage of older Germanischer Lloyd voyage analysis tools, occasionally referenced in lashing reviews.
Glacial Isostatic Adjustment (GIA) D5. Coastal processes, sea-level, cryosphere and ocean observation science: Crustal response to changes in ice load.
Glacier X27. Polar Code, Ice Navigation and Polar Operations: Mass of land ice flowing under gravity, terminating on land or at tidewater.
Glacier Bay X64. Cruise Industry Operators, Brands and Ships: Alaskan national park visited under a permit system on Alaska cruises.
Glacier Bay Permit X164. Cruise Industry, Brands, Ship Classes, and Terminals: The National Park Service concession allocating a small number of vessel entries per day to cruise lines operating in Glacier Bay National Park, Alaska.
Glacier ice X27. Polar Code, Ice Navigation and Polar Operations: Ice originating from glaciers; structurally different from sea ice.
Glacier tongue X27. Polar Code, Ice Navigation and Polar Operations: Long, narrow floating extension of a glacier projecting into the sea.
Glade Johnson Design X35. Yacht and Superyacht Industry: US yacht interior design studio in Seattle.
Gland Packing Inspection X5. Marine Surveying and Inspection: Examination of stern tube and pump glands for leakage.
Gland Sealing X63. Marine Auxiliary Machinery and Pumps: Sealing arrangement around the rotating shaft of a pump using packing or mechanical seal.
Gland water X175. Port Engineering, Dredging, Breakwaters, and Quays: Clean water supplied to dredge pump shaft seals to prevent abrasive slurry from damaging the gland.
Glander International Bunkering X72. Bunkering Hubs and Bunker Suppliers: Bunker trader founded in 1989 with offices in Stamford, Dubai, Singapore, and Hamburg, owned by the Wonsild family.
Glasgow X39. Pre-1900 Maritime History: Scottish city on the Clyde; the Clyde shipbuilding district produced about a fifth of world merchant tonnage by 1913.
Glasgow (HMS) F88 X106. Naval Surface Combatants: Lead ship of the Royal Navy Type 26 City-class frigate, launched 2022.
Glasgow Caledonian University Maritime X121. Maritime Education, Academies and Universities: Provides logistics and maritime management programs in addition to City of Glasgow College deck training.
Glasgow Climate Pact X57. Ocean Energy Beyond Wind: 2021 UNFCCC outcome that reinforced policy momentum for offshore CCS and clean hydrogen.
Glasgow Coma Scale X36. Shipboard Medical, Telemedicine and Seafarer Health: Neurological assessment scoring eye, verbal, and motor response (3-15).
Glasgow Marine Simulator X144. Bridge Simulators, Engine Room Simulators, and Maritime Training Equipment: City of Glasgow College Riverside Campus operates a multi-bridge Kongsberg K-Sim facility opened 2015.
Glasgow Riverside Campus X121. Maritime Education, Academies and Universities: See City of Glasgow College.
Glasgow Riverside Museum F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Holds the SV Glenlee.
Glasgow School of Naval Architecture F3. Seafaring Life, Education, Professions and Institutions: University of Strathclyde naval architecture department.
Glass X3. Ship Handling, Seamanship and Deck Vocabulary: Barometer; sandglass.
Glass Bead X88. Marine Surface Preparation and Coatings Application: Spherical soda-lime glass abrasive used for peening and cleaning without significant material removal.
Glass Flake X88. Marine Surface Preparation and Coatings Application: Coating reinforcement of milled C-glass platelets that lengthens diffusion paths and improves abrasion resistance in epoxy and vinyl ester systems.
Glass flake epoxy X45. Marine Paints, Coatings and Antifouling: Highly chemical- and water-resistant epoxy containing glass flake pigment, common in ballast tanks and offshore submerged zones.
Glass Inner Receptacle X75. IMDG Code, Classes, Packing and Segregation: Class of inner packagings used for sensitive Class 8 or 6.1 substances with quantity limits.
Glass Mat Reinforcement X100. Marine Cathodic Protection and Anodes: The glass-fiber mat embedded in epoxy that forms the structural layer of an anode shield.
Glass Reinforced Plastic X82. Saturation Diving and Offshore Diving Operations: GRP, used for non-metallic chamber components.
Glass reinforced plastic hull X77. Naval Mine Warfare and Mine Countermeasures: A composite construction material widely adopted for modern minehunters due to its low magnetic signature.
Glass-reinforced epoxy (GRE) duct X38. Propellers, Stern Gear and Shaft Lines: Composite construction option for Kort nozzles in workboat and aquaculture vessels.
Glaucothoe X10. Marine Biology, Fisheries and Oceanography: Larval stage of hermit crabs between zoea and juvenile.
Glavsevmorput X52. Polar Code, Arctic and Antarctic Shipping: Russian acronym for the Main Administration of the Northern Sea Route, historically the Soviet authority of 1932 and the modern Federal State Budgetary Institution established in 2018.
GLB X169. Container Terminal Cranes, Yard Equipment, and Lashing: MacGregor general cargo crane series with low-profile design, supplied for bulker, multipurpose, and reefer vessels.
GLDD X124. Dredging Industry and Reclamation Contractors: Great Lakes Dredge and Dock LLC, the largest US dredging contractor by revenue, headquartered in Houston.
GLDU Prefix X83. ISO Container Manufacturing and Leasing: BIC owner code historically associated with CMA CGM container fleet operations.
Glencore X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Anglo-Swiss commodity group and physical bunker supplier through Chemoil acquired in 2014.
Glencore International AG v MSC Mediterranean Shipping Co SA [2017] EWCA Civ 365 X143. Landmark Maritime Law Cases and Doctrines: English Court of Appeal held that release against an electronic pin was not delivery against a bill of lading.
Glencore Marine Fuels X72. Bunkering Hubs and Bunker Suppliers: Marine fuels marketing desk of Glencore with physical supply through joint ventures at Algeciras and Las Palmas.
Glider D5. Coastal processes, sea-level, cryosphere and ocean observation science: Buoyancy-driven autonomous underwater vehicle.
Global Affairs Canada (GAC) X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: The Canadian competent authority for the Special Economic Measures Act, enforcing Russia and Iran sanctions parallel to U.S. measures.
Global Beam X68. Maritime Satcom and Telecommunications: Wide footprint from a satellite covering an entire visible hemisphere.
Global Cargo Insurance Market X117. Marine Insurance Markets, Captives and Reinsurance: Estimated by IUMI at around 18.6 billion US dollars in gross premium for 2023.
Global Cement Manufacturer Demolition Steel Use X50. Ship Recycling, Demolition and Hong Kong Convention: A downstream use of demolition steel for clinker grinding mills and rebar feed in Indian cement complexes.
Global Cloud Xchange X122. Submarine Cable Laying, Repair Vessels and Operators: Reliance subsidiary operating the former FLAG cable systems, with cable ships managed via S B Submarine Systems.
Global Cloud Xchange (GCX) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Operator of the FA-1 and FLAG cable systems across the Indian Ocean and Middle East.
Global Cold Chain Alliance X136. Reefer Vessels and Cool Chain Operators: Industry body representing more than 1,400 cold storage and reefer logistics members worldwide.
Global Container Fleet X83. ISO Container Manufacturing and Leasing: Total global stock of intermodal containers, around 50 million TEU at end of 2023.
Global Container Terminals X138. Global Container Terminal Operators and Port Equipment: GCT, Canada-headquartered operator of New York, New Jersey and Vancouver facilities, owned by IFM Investors and OTPP.
Global Counter Piracy Guidance X22. Piracy, Maritime Security and Armed Protection: 2021 industry publication issued by ICS, BIMCO, INTERTANKO, INTERCARGO and OCIMF consolidating regional guidance.
Global Diving and Salvage X167. Major Salvage Companies, Wreck Removals, and Equipment: Seattle headquartered US diving and salvage firm, OPA 90 SMFF qualified.
Global Drifter Program D1. Physical and chemical oceanography and marine meteorology: NOAA-led array of satellite-tracked surface drifters.
Global Eagle X68. Maritime Satcom and Telecommunications: Former connectivity provider whose maritime business became part of Anuvu.
Global FE Model X54. Naval Architecture Software and IACS Rules: Full ship FEM idealization used in CSR-BC+OT very fine mesh hot spot analysis.
Global Fishing Watch D4. Fisheries, aquaculture, blue economy and marine resources: Platform providing transparency of fishing activity using AIS data.
Global Hull and Machinery Market X117. Marine Insurance Markets, Captives and Reinsurance: Estimated by IUMI at around 9.2 billion US dollars in gross premium for 2023.
Global Infrastructure Partners X42. Offshore Wind Installation and Cable Lay: US fund manager partner in US offshore wind projects including Sunrise Wind and Revolution Wind.
Global Liner Shipping Conference X119. Maritime Conferences, Trade Shows and Awards: Annual container shipping forum convened by Informa in Hamburg.
Global Marine Group X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: UK headquartered subsea cable installation and maintenance company, operator of cableships including Cable Innovator and Sovereign.