Glossary

Maritime glossary, terms beginning with A (page 8)

All maritime glossary terms that begin with the letter A, drawn from every subject section. 3739 entries.

Showing 250 of 3739 terms (page 8 of 15).

Alton X103. US Inland Waterway Towing and Barge: An Illinois city on the Upper Mississippi River adjacent to the Melvin Price Locks and Dam.
Altona Cruise Terminal X164. Cruise Industry, Brands, Ship Classes, and Terminals: One of three cruise terminals operated by Hamburg Cruise Center, located on the Elbe River in Hamburg's western district.
AluMaster B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Aluminum block fabrication.
Alumina X1. Cargo Science, Commodities and Cargo Care: Bulk cargo (Group C in lumpy form, Group A as fine hydrate); feedstock for aluminum smelters.
Aluminium Alkyls X75. IMDG Code, Classes, Packing and Segregation: UN 3051, 3052 pyrophoric Class 4.2 with Class 3 subsidiary risk, pyrophoric label required.
Aluminium Construction X132. High-Speed Craft, Hydrofoils and Ferry Operators: Dominant hull material for HSCs above 30 m, used by Incat and Austal, valued for low weight and good fatigue performance with 5083 and 5383 plate.
Aluminium Phosphide X75. IMDG Code, Classes, Packing and Segregation: UN 1397, Class 4.3 with Class 6.1 subsidiary risk, liberates toxic phosphine on contact with water.
Aluminium Powder Coated X75. IMDG Code, Classes, Packing and Segregation: UN 1309, Class 4.1 flammable solid with Packing Group II or III depending on particle size.
Aluminium Powder Uncoated X75. IMDG Code, Classes, Packing and Segregation: UN 1396, Class 4.3 dangerous when wet.
Aluminium Wear X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: Element measured at parts per million in lube oil analysis by ICP spectrometry, indicating piston skirt or bearing cage wear.
Aluminothermic Cutting X118. Ship Recycling Yards, Beaches and Regulation: Thermite-based cutting used selectively on heavy castings; not standard at South Asian yards but used in dry-dock recycling at Aliaga.
Aluminum + silicon X47. Marine Fuel Quality and ISO 8217: Combined mass fraction of Al and Si in residual fuel, expressed in mg/kg, used as the ISO 8217 proxy for catalytic fines.
Aluminum 5083 X92. Marine Steel Suppliers and Shipbuilding Plate: Marine grade aluminum magnesium alloy widely used for high speed craft hulls and LNG containment structures.
Aluminum 5083-H321 B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Marine-grade Al-Mg plate.
Aluminum 5083-O X92. Marine Steel Suppliers and Shipbuilding Plate: Annealed temper of 5083 used for formed sections in LNG type B Moss tanks.
Aluminum 5086 X92. Marine Steel Suppliers and Shipbuilding Plate: Aluminum magnesium alloy used for marine hull plate and superstructure applications.
Aluminum 5454 X92. Marine Steel Suppliers and Shipbuilding Plate: Aluminum magnesium manganese alloy used in tank construction with good elevated temperature performance.
Aluminum 6082 X92. Marine Steel Suppliers and Shipbuilding Plate: Aluminum magnesium silicon structural alloy used in marine extrusions and superstructures.
Aluminum Anode X100. Marine Cathodic Protection and Anodes: A sacrificial anode of Al-Zn-In alloy with density 2.77 g/cc, theoretical capacity 2,977 Ah/kg, and closed-circuit potential of about -1.10 V vs Ag/AgCl, widely used for ship hulls and offshore…
Aluminum Bronze X100. Marine Cathodic Protection and Anodes: A copper-aluminum alloy used for propellers and seawater valves, sitting near -0.30 V vs Ag/AgCl in the galvanic series.
Aluminum Container X83. ISO Container Manufacturing and Leasing: Specialty box with aluminum panels instead of corten steel, occasionally used for domestic US 53-foot units to reduce tare weight.
Aluminum Content X115. Marine Bunker and Cargo Surveying: Concentration of aluminum in residual marine fuel determined per ISO 10478, indicative of catalytic fines that abrade fuel pumps and injectors.
Aluminum Foil (Catering) X120. Marine Catering, Provisions and Ship Chandlers: IMPA 174711 standard catering foil roll, heavy duty grade for galley use.
Aluminum Hull Casualty X60. Marine Salvage and Wreck Removal: Salvage involving aluminum constructed vessels, which present specific fire and structural challenges.
Aluminum Ingots X1. Cargo Science, Commodities and Cargo Care: Steel-strapped bundles, breakbulk; slip-prone, require chocking and wire lashings.
Aluminum Ion Generator X100. Marine Cathodic Protection and Anodes: The aluminum-anode side of a marine growth prevention system that releases Al ions to inhibit corrosion of downstream copper-nickel piping.
Aluminum Oxide X88. Marine Surface Preparation and Coatings Application: Hard, angular synthetic abrasive (Al2O3) used for blast cleaning and for the cutting media in coated abrasives, recyclable in cabinet blasting.
Aluminum pigment X45. Marine Paints, Coatings and Antifouling: Leafing or non-leafing flake used in heat-resistant and reflective coatings for exhaust uptakes and funnel bands.
Aluminum plus silicon (Al+Si) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Combined concentration of catalyst fines in residual fuel, capped at 60 mg/kg under ISO 8217:2017 for most residual grades.
Aluminum plus Silicon Limit X115. Marine Bunker and Cargo Surveying: Combined Al+Si specification in ISO 8217 capped at 60 mg/kg for many residual grades to protect engines from cat-fine wear.
Aluminum Recovery X50. Ship Recycling, Demolition and Hong Kong Convention: The salvage of deckhouse cladding, lifeboat hulls, and electrical busbar aluminum during dismantling, typically priced separately from steel scrap.
Aluminum sacrificial anode X42. Offshore Wind Installation and Cable Lay: Block of aluminum alloy bolted to monopiles and jackets to provide galvanic corrosion protection.
Aluminum Smelter Grade Alumina (SGA) X1. Cargo Science, Commodities and Cargo Care: Free-flowing fine powder, low angle of repose, dust hazard.
Aluminum Tanks X93. IBC Code and Chemical Tanker Operations: Cargo containment material permitted under IBC Code Chapter 6 for specific cargoes incompatible with steel, subject to chloride and mercury exclusion.
Aluminum Tape Test X5. Marine Surveying and Inspection: Wall wash test for chloride contamination in clean petroleum tanks.
Aluminum thermal spray X45. Marine Paints, Coatings and Antifouling: Metallized coating applied to steel for long-term corrosion protection in splash zone and offshore structures.
Aluminum Tributyltin X50. Ship Recycling, Demolition and Hong Kong Convention: A copolymer formulation of TBT antifouling paint banned by the AFS Convention 2001, still detectable on long-life coatings of older tonnage.
ALV (Automated Lifting Vehicle) X46. Container Terminal Operations: An unmanned horizontal transporter that can independently lift a container on or off a yard stack, eliminating the need for an automated stacking crane handoff at the block end.
Alvaro de Bazan class X11. Naval Vessels, Warship Systems and Naval Architecture: Spanish F-100 Aegis frigate with SPY-1D, lead ship F-101.
Alvin (DSV Alvin) X10. Marine Biology, Fisheries and Oceanography: U.S. Navy-owned, WHOI-operated three-person deep-submergence research submersible.
Always accessible C1. Commercial shipping, chartering, economics and finance: Berth warranty that the vessel can reach the berth at any time.
Always Accessible Berth X86. Port Agency, Husbandry and Disbursement: Charter party clause requiring a berth reachable without tide or weather delay.
Always afloat C1. Commercial shipping, chartering, economics and finance: Charter requirement that the vessel must remain afloat at all states of the tide.
Always Afloat (AA) X17. Chartering, Shipbroking and Freight Trading: Warranty that the vessel will not rest on the ground at any state of tide.
Always Safely Afloat or NAABSA X86. Port Agency, Husbandry and Disbursement: Variant clause distinguishing ports where the vessel may rest on a soft bottom.
Always-On Connection X68. Maritime Satcom and Telecommunications: Maritime satellite service model where IP connectivity is maintained continuously rather than per-call.
Aman Bintulu X134. LNG and LPG Carrier Operators and Containment Systems: LNG carrier of 18,800 m3 delivered 1993 by Mitsubishi Heavy Industries for MISC Berhad, Moss containment.
Aman Knutsen X110. LNG Bunkering Infrastructure and Vessels: Knutsen OAS Shipping LNG bunker vessel of the Houston/Galveston generation operating in the US Gulf.
AmaWaterways X33. Inland Navigation and Barge Operations: River cruise operator running European, Asian, and African inland itineraries.
Ambassador Cruise Line X64. Cruise Industry Operators, Brands and Ships: British cruise operator founded in 2021 with ships Ambience and Ambition aimed at the mature UK market.
Amber light X32. Marine Pilotage and Pilot Operations: Identifying light shown by some pilot boats in addition to the white-over-red pilot vessel lights.
Amber Status Light X31. Helicopter Operations on Ships: Helideck status light indicating limited operations or caution condition.
Ambience X64. Cruise Industry Operators, Brands and Ships: Ambassador Cruise Line vessel, formerly Regal Princess and Pacific Dawn.
Ambient Air Compressor X63. Marine Auxiliary Machinery and Pumps: Compressor drawing intake air from the engine room atmosphere through a suction filter and silencer.
Ambient air temperature X27. Polar Code, Ice Navigation and Polar Operations: Outside air temperature; Polar Code requires materials and equipment rated to Polar Service Temperature.
Ambient Air Vaporizer (AAV) X20. LNG Operations and Custody Transfer: LNG regasification heat exchanger using ambient air as the heat source at receiving terminals.
Ambient Conditions Record X5. Marine Surveying and Inspection: Logged temperature, humidity, and dew point during coating, gauging, or hold inspection.
Ambient light X16. Nautical Science, Navigation and COLREGs: Background illumination affecting bridge night-vision and ECDIS display palettes.
Ambient Pressure X82. Saturation Diving and Offshore Diving Operations: Hydrostatic pressure at the diver's working depth.
Ambient Reefer Setting X1. Cargo Science, Commodities and Cargo Care: Container setpoint matching outside air, used in transit of non-perishables.
Ambient Sea State X60. Marine Salvage and Wreck Removal: Wave and swell conditions surrounding a casualty that constrain salvage operations.
Ambient temperature X26. Reefer Containers and Cold Chain Logistics: Outside air temperature surrounding the reefer; influences pull-down time and compressor duty cycle.
Ambient temperature design X56. LNG/LPG Carriers and IGC Code: IGC Code requirement that gas carrier systems be designed for tropical sea and air temperatures, typically 32 degrees Celsius seawater and 45 degrees Celsius air.
Ambient viscosity X61. Marine Lubricants and Cylinder Oils: Kinematic viscosity of a lubricant at storage temperature, relevant to pumpability in cold bunker tanks.
Ambient Water Quality Criteria D3. Marine environmental science, pollution and conservation: Numerical limits for pollutants to protect aquatic life.
Ambiorix X124. Dredging Industry and Reclamation Contractors: DEME self-propelled CSD of 19,200 kW total installed power, named after the Eburones chieftain.
Ambition X64. Cruise Industry Operators, Brands and Ships: Ambassador Cruise Line vessel, formerly AIDAmira and Costa neoRiviera.
Ambition (IMO) X34. Decarbonization, Alternative Fuels and Carbon Pricing: Quantified GHG reduction target in the IMO Revised Strategy MEPC.377(80): net-zero by or around 2050, with 2030 and 2040 checkpoints.
Ambrey X114. Maritime Arbitration and Shipping Law Firms: Maritime risk management firm advising on charterparty disputes arising from war risks and conflict zones.
Ambrey Analytics X127. Maritime Security, Anti-Piracy and PMSCs: Subscription intelligence service from Ambrey publishing daily maritime security bulletins on Red Sea, Gulf of Guinea and Strait of Hormuz incidents.
Ambrose Channel X103. US Inland Waterway Towing and Barge: An ocean approach channel; not part of the inland river system but commonly referenced where coastwise tank barges interchange with inland fleets.
AMC Search X55. Marine Simulators, Training and Maritime Academies: Commercial training arm of the Australian Maritime College, delivering short STCW and simulator courses in Launceston, Tasmania.
AMC Simulator Centre X144. Bridge Simulators, Engine Room Simulators, and Maritime Training Equipment: Australian Maritime College Launceston runs Kongsberg K-Sim Navigation and K-Sim Engine.
AMDR X62. Naval Warships and Combat Systems: Air and Missile Defense Radar program designation for the AN/SPY-6 family.
Ameera Floating Dock X113. Drydock and Ship Repair Yards: Floating drydock asset historically associated with Drydocks World Dubai supporting Aframax and VLCC repair work.
Amelia X124. Dredging Industry and Reclamation Contractors: Boskalis TSHD of 4,500 m3 hopper capacity, used in port maintenance.
Amels X35. Yacht and Superyacht Industry: Dutch superyacht builder in Vlissingen, part of the Damen group, known for its Limited Editions range.
Amels 180 X125. Superyacht Industry, Builders and Brokers: Best selling Limited Edition platform, 55 m, designed by Tim Heywood with a semi-custom interior.
Amended Laytime X17. Chartering, Shipbroking and Freight Trading: Recalculated laytime after correction of facts in the statement of facts.
Amended LOF X51. Maritime Arbitration, Law and BIMCO Clauses: A Lloyd's Open Form salvage agreement modified by hand to alter the SCOPIC or arbitration provisions before signature.
Amendment 41-22 X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: The IMDG Code amendment adopted by IMO Resolution MSC.501(105), in force on a voluntary basis from 1 January 2023 and mandatory from 1 January 2024.
Amendment 42-24 X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: The IMDG Code amendment adopted by IMO Resolution MSC.532(107), applicable voluntarily from 1 January 2025 and mandatory from 1 January 2026.
Amendment Procedure A1. The IMO and the international regulatory framework: Process by which IMO conventions are modified, typically by tacit acceptance for technical annexes.
America (schooner) X84. Yacht Racing, Regattas and Sailing Governance: The yacht that won the Royal Yacht Squadron's 1851 cup at Cowes, lending its name to the America's Cup trophy.
America-class LHA X106. Naval Surface Combatants: US Navy amphibious assault ship class led by USS America LHA-6 commissioned 2014, followed by USS Tripoli LHA-7 and USS Bougainville LHA-8.
America's Cup F4. Recreational Boating, Yachting and Sport: Oldest international sailing trophy, contested since 1851.
America's Cup Deed of Gift X84. Yacht Racing, Regattas and Sailing Governance: The governing instrument signed in 1887 that sets the terms under which the America's Cup is contested.
America's Cup Match X84. Yacht Racing, Regattas and Sailing Governance: The best-of-thirteen final series between defender and challenger that decides each America's Cup.
American Albacore Fishing Association (AAFA) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: California-based cooperative whose Pacific troll-caught albacore fishery has held MSC certification since 2007.
American Arbitration Association X51. Maritime Arbitration, Law and BIMCO Clauses: A private dispute resolution institution whose Commercial Arbitration Rules are occasionally selected in maritime contracts involving US parties.
American Club X53. Marine Insurance, P&I and Hull Clauses: Common name for the American Steamship Owners Mutual Protection and Indemnity Association, Inc., a New York-based International Group P&I club founded in 1917.
American Commercial Barge Line X103. US Inland Waterway Towing and Barge: See ACBL, the Jeffersonville, Indiana barge line formed by the consolidation of American Barge Line and Commercial Barge Line interests.
American Hull Insurance Syndicate X108. Marine Insurance and P&I Clubs: A former United States hull market pool that published the AIHC 1977 wording widely used for North American flag vessels.
American Institute Hull Clauses (AIH 1977) X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets: US market standard hull policy form.
American Institute Hull Clauses (AIHC) X4. Marine Insurance, P&I and Claims: standard US hull form last revised June 2, 1977.
American Institute Hull Clauses 1977 X108. Marine Insurance and P&I Clubs: A standard United States hull policy wording forming the basis of much North American hull cover, with named perils and a separate collision liability section.
American Institute War Risks SP-29 X108. Marine Insurance and P&I Clubs: The standard United States hull war risk clauses used alongside AIHC for war and strikes cover.
American lobster X10. Marine Biology, Fisheries and Oceanography: *Homarus americanus*, the principal commercial lobster of the northwest Atlantic.
American Maritime Officers Star Center X121. Maritime Education, Academies and Universities: Simulation and Training Education Research Center in Dania Beach, Florida, founded 1981, providing license upgrades and STCW refresher courses for AMO members.
American Petroleum Institute (API) X155. Marine Surveying Practice and Cargo Inspection: The US trade association whose Manual of Petroleum Measurement Standards (MPMS) governs the measurement of oil cargoes during loading and discharge surveys.
American Seafoods X87. Fishing Vessels and Fisheries Management: US flag operator of Bering Sea pollock factory trawlers including the American Triumph and Northern Eagle.
American Seafoods Company X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Seattle-based catcher-processor operator running six factory trawlers in the Bering Sea pollock fishery, owned since 2017 by a consortium including Bregal Partners.
American Shipping Company X49. Ship Finance, Leasing and Maritime Capital Markets: Oslo listed Jones Act tonnage provider that has used both bond and equity capital markets.
American Steamship Owners Mutual P&I Association X4. Marine Insurance, P&I and Claims: the American Club, US-based International Group P&I club incorporated 1917.
American Triumph X87. Fishing Vessels and Fisheries Management: US flag Bering Sea pollock factory trawler operating under the American Fisheries Act 2000 cooperative.
American Waterways Operators X103. US Inland Waterway Towing and Barge: The Arlington, Virginia trade association founded in 1944 representing US tugboat, towboat and barge operators.
Americold X70. Reefer Containers and Cold Chain Shipping: United States headquartered cold storage operator providing temperature-controlled warehousing and port-adjacent reefer logistics services worldwide.
Amerigo Vespucci X39. Pre-1900 Maritime History: Florentine navigator whose voyages between 1499 and 1502 led to the naming of the Americas.
Ameron X45. Marine Paints, Coatings and Antifouling: Historical marine and protective coatings brand acquired by PPG Industries and integrated into PPG Protective and Marine Coatings.
Amery Ice Shelf X133. Polar Research Vessels and Polar Code Regimes: Third-largest Antarctic ice shelf, drains 16 percent of East Antarctic ice, surveyed by RSV Nuyina.
AMET University X55. Marine Simulators, Training and Maritime Academies: Academy of Maritime Education and Training in Chennai, India, a DGS-approved institution offering pre-sea and post-sea programs.
AmFELS X113. Drydock and Ship Repair Yards: Brownsville, Texas, shipyard now part of Seatrium, undertaking jackup rig, offshore, and commercial vessel repair on the Gulf Coast.
AMI Marine X89. ECDIS and Bridge Equipment Makers: United Kingdom maker of bridge electronics including the C2000 conning display and rudder angle indicator systems.
Amiable compositeur X152. Maritime Arbitration and Dispute Resolution: Arbitrator empowered to decide ex aequo et bono rather than strictly by law, rare in commercial maritime arbitration and requiring express authorization.
Amidships B1. Naval Architecture: Longitudinal midpoint between the forward and aft perpendiculars.
Amine adduct X45. Marine Paints, Coatings and Antifouling: Modified amine curing agent used in epoxy primers to improve low-temperature cure and reduce blushing.
Amine blush X45. Marine Paints, Coatings and Antifouling: Sticky carbamate formation on a curing epoxy when exposed to moisture and carbon dioxide, requiring removal before overcoating.
Amine scrubbing X34. Decarbonization, Alternative Fuels and Carbon Pricing: Post-combustion CO2 capture using monoethanolamine (MEA) or proprietary solvents.
Amine solvent X57. Ocean Energy Beyond Wind: Chemical absorbent used at onshore capture plants whose recovered CO2 stream is shipped or piped to offshore storage sites.
Amines Liquid Corrosive NOS UN 2735 X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: A Class 8 generic entry for liquid amines or polyamines that are corrosive, assigned PG I, II, or III based on skin corrosion data.
Amitié (cable system) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Transatlantic submarine cable linking Lynn (Massachusetts), Le Porge (France), and Bude (UK), commissioned in 2023.
AML X29. Ship Sale and Purchase, Management Contracts and Valuation: Anti-Money Laundering compliance regime.
AML Minos-X X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Multi-parameter sonde from AML Oceanographic accepting interchangeable Xchange sensor heads for sound velocity, conductivity, temperature, and turbidity.
AML Oceanographic X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Canadian manufacturer based in Sidney, British Columbia, producing modular Xchange sound velocity sensors and CTD instruments used on multibeam survey platforms.
AML Smart Sensors X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Plug-and-play oceanographic sensor family in which calibration data resides on the sensor itself, simplifying field swaps on survey launches.
Ammeter Shunt X100. Marine Cathodic Protection and Anodes: A calibrated low-resistance device installed in series with anode cables to measure current output of an ICCP zone.
AMMITEC X160. Maritime Academies, Universities, and STCW Certification: Hellenic Marine IT and Communications Association running training and conferences for Greek-managed fleet IT and ETO personnel.
Ammonia X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Carbon-free marine fuel with a tank-to-wake carbon factor of zero under IMO MEPC.376(80), with upstream emissions accounted separately.
Ammonia (fuel) B2. Marine Engineering: Carbon-free alternative fuel addressed by IGF/IGC future amendments.
Ammonia (NH3 / NH4+) X10. Marine Biology, Fisheries and Oceanography: Dissolved nitrogen compound; a primary excretion product of marine animals and a phytoplankton nutrient.
Ammonia (NH3) X34. Decarbonization, Alternative Fuels and Carbon Pricing: Carbon-free fuel candidate; combustion produces no CO2 but raises NOx and N2O concerns and requires SCR aftertreatment.
Ammonia (NH3) as fuel X149. Marine Fuels, Bunkering, and Alternative Fuels: A carbon-free fuel under active pilot for two-stroke main engines, with key challenges around toxicity, NOx slip, and bunkering safety.
Ammonia (R717) X26. Reefer Containers and Cold Chain Logistics: Natural refrigerant GWP 0, ODP 0; used in shore cold stores and reefer vessel hold plants, not in container units.
Ammonia Auto-Ignition Temperature X111. Methanol, Ammonia and Alternative Marine Fuels: Approximately 651 degrees Celsius for NH3, well above diesel and methanol, which is why ammonia engines require a pilot fuel for reliable ignition.
Ammonia Barge X103. US Inland Waterway Towing and Barge: A pressurized inland tank barge carrying anhydrous ammonia to agricultural and industrial terminals.
Ammonia bunker X47. Marine Fuel Quality and ISO 8217: Anhydrous ammonia (NH3) supplied as marine fuel for dual-fuel two-stroke engines, with a quality standard under development at ISO TC 28.
Ammonia Bunker Barge (Hanwha Ocean) X111. Methanol, Ammonia and Alternative Marine Fuels: Ammonia bunker vessel program announced by Hanwha Ocean of South Korea for delivery from 2025 to support early ammonia bunkering operations.
Ammonia Bunker Vessel X140. Ammonia as Marine Fuel and Hydrogen Shipping: Specialized barge or coaster designed to deliver liquid NH3 ship-to-ship, with Samsung and Wartsila releasing AiP designs in 2023.
Ammonia bunkering X34. Decarbonization, Alternative Fuels and Carbon Pricing: Ship-to-ship or shore-to-ship transfer of liquid ammonia at approximately minus 33 C atmospheric pressure or semi-refrigerated.
Ammonia bunkering pilot X149. Marine Fuels, Bunkering, and Alternative Fuels: Ship-to-ship and shore-to-ship trials being conducted in Singapore, Pilbara, and the Port of Rotterdam ahead of commercial NH3 supply.
Ammonia Carrier X111. Methanol, Ammonia and Alternative Marine Fuels: Liquefied gas tanker designed to transport NH3 cargo, increasingly studied as a platform for ammonia-fueled propulsion since the cargo and fuel are identical.
Ammonia Combustion Pilot Fuel X140. Ammonia as Marine Fuel and Hydrogen Shipping: 5 to 10 percent diesel or MGO injection required in MAN ME-LGIA to ignite the NH3 charge in two-stroke cycle.
Ammonia cracker X34. Decarbonization, Alternative Fuels and Carbon Pricing: Onboard unit decomposing NH3 to H2 + N2 for fuel cell feed.
Ammonia Cracker Reformer X140. Ammonia as Marine Fuel and Hydrogen Shipping: Catalyst-bed reactor over ruthenium or nickel that yields 75 percent H2 and 25 percent N2 by mole.
Ammonia Density X111. Methanol, Ammonia and Alternative Marine Fuels: 681 kg/m3 as liquid at typical storage conditions, lower than HFO and methanol, increasing required tank volume per unit of energy.
Ammonia dual-fuel (MAN ME-LGIA) X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions two-stroke variant adapted to burn liquid ammonia as the primary fuel with a small pilot of marine diesel oil.
Ammonia dual-fuel (WinGD X-DF-A) X90. Marine Engine Specific Model Enumeration: WinGD low-speed two-stroke platform engineered for ammonia combustion with high-pressure injection and dedicated fuel supply system.
Ammonia Energy Association X140. Ammonia as Marine Fuel and Hydrogen Shipping: New York-based industry body publishing the Ammonia Energy Conference proceedings annually since 2004.
Ammonia Energy Density X140. Ammonia as Marine Fuel and Hydrogen Shipping: 12.7 MJ/L volumetric LHV at minus 33 deg C, roughly half of MGO but triple liquid hydrogen.
Ammonia Engine Slip X140. Ammonia as Marine Fuel and Hydrogen Shipping: Unburned NH3 emitted from the stack, targeted below 100 ppm in MAN ME-LGIA Tier III certification.
Ammonia Flame Speed X111. Methanol, Ammonia and Alternative Marine Fuels: Around 0.07 m/s in air, much slower than methane, which drives the use of pilot fuel and combustion chamber redesign in marine ammonia engines.
Ammonia IDLH X111. Methanol, Ammonia and Alternative Marine Fuels: The Immediately Dangerous to Life or Health value of 300 ppm for ammonia under NIOSH guidance, with an occupational exposure limit of 25 ppm.
Ammonia LHV X111. Methanol, Ammonia and Alternative Marine Fuels: Lower heating value of 18.6 MJ/kg for NH3, roughly 47 percent of HFO on a mass basis.
Ammonia Pilot Fuel X111. Methanol, Ammonia and Alternative Marine Fuels: Small fraction of diesel, MGO, or alternative fuel injected to ignite the main ammonia charge in dual-fuel marine engines.
Ammonia Pioneer (MV) X111. Methanol, Ammonia and Alternative Marine Fuels: Mitsubishi and MOL ammonia-fueled demonstrator vessel project targeted for 2026 service.
Ammonia Pyrolysis X140. Ammonia as Marine Fuel and Hydrogen Shipping: Endothermic decomposition consuming about 13 percent of NH3 LHV as process heat for onboard cracking.
Ammonia Refrigerant X63. Marine Auxiliary Machinery and Pumps: R-717 used in industrial fish factory and large refrigeration plants for its high efficiency.
Ammonia refrigeration X19. Engine Room Watchkeeping and UMS Operations: R717 system used on reefer carriers, requiring detection and ventilation precautions.
Ammonia slip X34. Decarbonization, Alternative Fuels and Carbon Pricing: Unburned NH3 emitted from engines and SCR systems, regulated for toxicity and N2O formation.
Ammonia Solution X75. IMDG Code, Classes, Packing and Segregation: UN 2073 or UN 2672, Class 2.2, 6.1 or 8 depending on concentration, segregated from chlorine.
Ammonia Storage Pressure X111. Methanol, Ammonia and Alternative Marine Fuels: Approximately 8 to 10 bar at ambient temperature, or atmospheric pressure when refrigerated to about minus 33 degrees Celsius.
Ammonia Toxicity X111. Methanol, Ammonia and Alternative Marine Fuels: Acute inhalation hazard with strong pungent odor at low ppm levels and life-threatening exposure above 300 ppm.
Ammonia Vapor Plume Modeling X140. Ammonia as Marine Fuel and Hydrogen Shipping: PHAST and FLACS CFD tools used to map dispersion exclusion zones around bunker operations.
Ammonia, Anhydrous X1. Cargo Science, Commodities and Cargo Care: Carried refrigerated (-33 C) on fully refrigerated LPG/ammonia carriers; toxic.
Ammonium D1. Physical and chemical oceanography and marine meteorology: Reduced nitrogen species (NH4+) used by phytoplankton and a key nutrient in seawater.
Ammonium Bisulfate X69. EGCS Scrubbers, SCR and Marine Air Emissions: Sticky deposit formed when SCR ammonia reacts with residual SO3, fouling downstream heat exchangers.
Ammonium Nitrate X1. Cargo Science, Commodities and Cargo Care: IMDG Class 5.1 oxidizer (UN 1942), or 9 (UN 2071) for fertilizer grade; strict segregation from fuels.
Ammonium Nitrate Based Fertilizer X75. IMDG Code, Classes, Packing and Segregation: UN 2067 Class 5.1 or UN 2071 Class 9 depending on composition under IMDG 2.5.3.
Ammonium Nitrate Based Fertilizer (ANBF) X1. Cargo Science, Commodities and Cargo Care: IMSBC schedules for Type A and Type B; self-sustaining decomposition risk.
Ammonium Nitrate UN 1942 X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: An oxidiser (Class 5.1) with not more than 0.2 per cent combustible substances, requiring specific stowage and segregation from organic materials.
Ammonium Sulfate Aerosol X69. EGCS Scrubbers, SCR and Marine Air Emissions: Secondary particulate formed from SCR ammonia slip combining with sulfur oxides in the exhaust.
Ammunition X75. IMDG Code, Classes, Packing and Segregation: Articles of Class 1 with explosive content, UN numbers ranging across Division 1.1 to 1.4 by hazard.
AMMV X102. Seafarer Welfare and Maritime Charities: American Merchant Marine Veterans, a US veterans' association advocating recognition of World War II merchant mariners and supporting living veterans.
AMNS X77. Naval Mine Warfare and Mine Countermeasures: The AN/ASQ-235 Airborne Mine Neutralization System, an MH-60S-deployed expendable mine destructor based on the Atlas SeaFox vehicle.
AMO X10. Marine Biology, Fisheries and Oceanography: Atlantic Multidecadal Oscillation, a multi-decade pattern in North Atlantic sea surface temperatures.
AMOC D1. Physical and chemical oceanography and marine meteorology: Atlantic Meridional Overturning Circulation, the large-scale overturning circulation of the Atlantic.
Amoco Cadiz X60. Marine Salvage and Wreck Removal: VLCC that grounded off Brittany in March 1978, releasing approximately 220,000 tonnes of crude oil.
Amoco Cadiz (1978) X12. Maritime Casualties and Investigation: VLCC that grounded off Brittany on 16 March 1978, spilling 223,000 tonnes of crude, prompting MARPOL Annex I tightening and EU coastal-state response measures.
Amoco Cadiz casualty (1978) X163. Marine Accident Investigation Agencies and Landmark Inquiries: Liberian-flag VLCC that grounded off Brittany on 16 March 1978, spilling about 220,000 tonnes of crude oil and prompting French and Liberian inquiries plus prolonged United States federal court…
Amoco Cadiz Spill X126. Marine Oil Spill Response and OPRC Regimes: 1978 VLCC grounding off Portsall, Brittany, releasing 223,000 tonnes of Iranian and Arabian crude, the catalyst for European Cedre and tighter Erika I/II rules.
AMOG Annual Conference X119. Maritime Conferences, Trade Shows and Awards: Australian Maritime and Offshore Group industry meeting held annually in Melbourne.
Amorella X85. Ferries, Ro-Pax Operators and Routes: Viking Line ro-pax built 1988 long deployed on the Turku to Stockholm route via Mariehamn.
Amortization Profile X49. Ship Finance, Leasing and Maritime Capital Markets: Schedule of principal repayments on a ship loan, often longer than the loan tenor with a balloon at maturity.
AMOS X29. Ship Sale and Purchase, Management Contracts and Valuation: Asset Management Operating System maintenance and procurement software by SpecTec.
Amosite Asbestos X50. Ship Recycling, Demolition and Hong Kong Convention: Brown asbestos historically used in marine insulation board and pipe lagging, controlled in IHM Part I Table A.
AMOSUP X102. Seafarer Welfare and Maritime Charities: Associated Marine Officers' and Seamen's Union of the Philippines, the largest Filipino seafarers' union and an ITF affiliate.
AMOU X102. Seafarer Welfare and Maritime Charities: Australian Maritime Officers Union, representing deck and engineer officers in the Australian merchant fleet and offshore sector.
Amoxicillin X36. Shipboard Medical, Telemedicine and Seafarer Health: Beta-lactam antibiotic in IMGS Annex IV for respiratory and dental infections.
Amoxicillin-clavulanate X36. Shipboard Medical, Telemedicine and Seafarer Health: Co-amoxiclav, broader-spectrum oral antibiotic stocked on Category A vessels.
AMP X15. Ports, Terminals and Stevedoring: Alternative Maritime Power, shoreside electrical supply to berthed vessels.
AMP (Alternative Maritime Power) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Shore-supplied electrical power to a berthed ship, also called cold ironing or OPS.
AMP Marine Equipment Approval X95. GMDSS Equipment and Survival Craft Communications: Common shorthand for Marine Equipment Directive approval under EU Directive 2014/90/EU, indicated by the Wheelmark symbol on compliant equipment.
AMP-1 X122. Submarine Cable Laying, Repair Vessels and Operators: Alcatel-developed power feeding architecture using single-ended PFE for short repeatered systems under 2,000 km.
Ampelmann X105. Offshore Wind Farm Installation and Vessels: Dutch motion-compensated gangway manufacturer providing A-Type, E-Type, L-Type, and W-Type systems for safe personnel transfer to offshore wind structures.
Ampelmann A-type X59. Offshore Wind O&M, CTVs and SOVs: Original parallelogram motion compensated gangway designed by Ampelmann Operations of Delft, widely used aboard SOVs for offshore wind technician transfer.
Ampelmann E1000 X59. Offshore Wind O&M, CTVs and SOVs: Electrically actuated motion compensated gangway with 1,000 kilogram payload rating used on smaller SOVs and CSOVs.
Ampelmann L-type X59. Offshore Wind O&M, CTVs and SOVs: Long reach motion compensated gangway variant designed for high freeboard SOV to turbine transfers.
Ampelmann Operations X59. Offshore Wind O&M, CTVs and SOVs: Delft based gangway manufacturer founded in 2008 supplying the Ampelmann family of motion compensated walkways to the offshore wind sector.
Ampere (cable system) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Planned high-capacity submarine cable connecting Bilbao, Spain to the United States East Coast, announced by Google in 2024.
Ampere Interrupting Capacity X67. Marine Electrical Systems and Shore Power: Rated short-circuit current that a marine circuit breaker can safely interrupt at its rated voltage.
Amphibious Assault Ship (LHA/LHD) E2. Naval, defence and maritime law enforcement: Large flat-deck ship for landing forces.
Amphibious Drillship E4. Cruise, offshore energy and auxiliary/specialised fleets: Generic term for shallow-water drilling vessel.
Amphibious Ready Group X11. Naval Vessels, Warship Systems and Naval Architecture: USN three-ship formation built around an LHA or LHD.
Amphibious Transport Dock (LPD) E2. Naval, defence and maritime law enforcement: Vessel combining troop berthing and well deck.
Amphidromic Point D2. Hydrography, tides, waves, bathymetry and marine geology: Location where tidal amplitude is zero and tidal phase rotates around it.
Amphidromic System D2. Hydrography, tides, waves, bathymetry and marine geology: Pattern of co-tidal and co-range lines around an amphidromic point.
Amphitrite X128. Sail Training Ships and Tall Ship Associations: 1887 German built three masted topsail schooner, 40 m length, restored 1980s as a UK based youth sail training vessel under Cirdan Sailing Trust.
Amphora Wreck F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Roman wreck class characterized by clay storage jars.
Amphoteric Behavior X100. Marine Cathodic Protection and Anodes: The tendency of aluminum and zinc to dissolve in both acidic and alkaline electrolytes, relevant to anode performance in mud zones.
AMPI X32. Marine Pilotage and Pilot Operations: Australasian Marine Pilots Institute, professional body representing marine pilots in Australia and New Zealand.
Amplidyne X67. Marine Electrical Systems and Shore Power: Legacy rotating amplifier formerly used in marine steering gear and gun-mount drives, now historic.
Amplifier (BUC) X68. Maritime Satcom and Telecommunications: Block Up Converter that translates the modem L-band output to the satellite uplink band and amplifies it for transmission.
Amplifier Bridge Conditioner X96. Hull Integrity Monitoring and Strain Gauges: Signal conditioning unit that supplies excitation to a Wheatstone bridge and amplifies the millivolt strain gauge output.
Amplitude X16. Nautical Science, Navigation and COLREGs: Angle between the prime vertical and a body on the horizon; used to obtain compass error at rising or setting.
Ampoule register X36. Shipboard Medical, Telemedicine and Seafarer Health: Logbook recording each glass ampoule of injectable medication issued from the medical chest.
AMPP X88. Marine Surface Preparation and Coatings Application: Association for Materials Protection and Performance, formed in 2021 by the merger of NACE International and SSPC, that administers coatings inspector and corrosion certifications.
AMPP CCI X88. Marine Surface Preparation and Coatings Application: Certified Coatings Inspector program launched by AMPP in 2024 with Level 1 and Level 2 tiers, succeeding the NACE CIP credential.
AMS X6. Container, Intermodal and Trade Codes: Automated Manifest System, US CBP electronic manifest filing for arriving cargo.
AMS fee X6. Container, Intermodal and Trade Codes: Surcharge collected by carriers for the AMS filing service.
AMSA X13. Marine Salvage and Wreck Removal: Australian Maritime Safety Authority, intervention powers under the Protection of the Sea Act.
AMSA (Australian Maritime Safety Authority) X146. Port State Control Regimes, MoUs, and Inspection Systems: The Australian PSC authority headquartered in Canberra, conducting inspections at all Australian ports under the Navigation Act 2012 and the Tokyo MoU framework.
AMSA Surveyor X43. Marine Surveying and Warranty Surveying: A marine surveyor accredited by the Australian Maritime Safety Authority to issue domestic commercial vessel certificates under the National Law.
AMSPEC X43. Marine Surveying and Warranty Surveying: An American independent inspection and laboratory company providing petroleum, petrochemical, and bulk cargo quantity and quality surveys at terminals worldwide.
AmSpec Group X115. Marine Bunker and Cargo Surveying: Global petroleum inspection company offering bunker quantity and quality services from offices in Houston, Algeciras, Rotterdam, Fujairah, and Singapore.
AMSR (Advanced Microwave Scanning Radiometer) D5. Coastal processes, sea-level, cryosphere and ocean observation science: Satellite microwave radiometer used for sea ice and SST.
Amsterdam X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Northern node of the ARA bunker market, host to Koole Terminals and Oiltanking storage used for blending VLSFO and IFO 380.
Amsterdam Port Authority X72. Bunkering Hubs and Bunker Suppliers: Havenbedrijf Amsterdam, the municipal port authority licensing bunker barges in the IJmond and North Sea Canal area.
AMSU X154. Maritime Welfare, Seafarer Charities, and MLC Rights: Australian Maritime Officers Union representing deck and engineer officers in Australian shipping.
AMU (American Institute of Marine Underwriters) X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: New York-based trade association representing US marine insurers, also styled AIMU, established in 1898.
Amundsen X124. Dredging Industry and Reclamation Contractors: Vox Amundsen, Van Oord TSHD of 19,500 m3 capacity delivered 2017.
Amundsen-Scott South Pole Station X133. Polar Research Vessels and Polar Code Regimes: USAP year-round station at 90 degrees South, resupplied via LC-130 from McMurdo.
AMVER X12. Maritime Casualties and Investigation: Automated Mutual-Assistance Vessel Rescue system run by the US Coast Guard, used for SAR coordination and highlighted in the El Faro investigation.
Amwelsh 93 C1. Commercial shipping, chartering, economics and finance: Americanised Welsh Coal Charter 1993, dry bulk voyage charter form.
Amyl Acetate X75. IMDG Code, Classes, Packing and Segregation: UN 1104, Class 3 flammable liquid Packing Group III.
AN/AQS-14 X77. Naval Mine Warfare and Mine Countermeasures: A helicopter-towed side-scan minehunting sonar formerly operated by the US Navy from the MH-53E.
AN/AQS-20A X77. Naval Mine Warfare and Mine Countermeasures: A Raytheon towed multi-function minehunting sonar developed for the Littoral Combat Ship MCM mission package.
AN/AQS-24A X77. Naval Mine Warfare and Mine Countermeasures: A Northrop Grumman high-speed towed side-scan minehunting sonar with laser line-scan imaging used by the US Navy.
AN/BLQ-10 X91. Submarines and Submarine Cable Systems: US Navy submarine electronic support measures (ESM) system providing signals intercept and direction finding.
AN/BPS-15 X91. Submarines and Submarine Cable Systems: US Navy submarine surface-search and navigation radar.
AN/BQQ-10 X91. Submarines and Submarine Cable Systems: US Navy submarine sonar processing system fielded across SSN and SSBN platforms.
AN/BQQ-21 X91. Submarines and Submarine Cable Systems: US Navy submarine integrated sonar suite associated with later Los Angeles and Seawolf class upgrades.
AN/BRR-6 X91. Submarines and Submarine Cable Systems: US Navy submarine VLF/LF communications buoy receiver system.
AN/BST-1 X91. Submarines and Submarine Cable Systems: US Navy submarine communications buoy associated with strategic communications relay.
AN/BYG-1 X91. Submarines and Submarine Cable Systems: Combat control system common to US, Australian, and Royal Navy submarine forces.
AN/SLQ-32 X11. Naval Vessels, Warship Systems and Naval Architecture: US shipboard electronic warfare suite, current variants V6 and V7 SEWIP.
AN/SPN-44 X77. Naval Mine Warfare and Mine Countermeasures: A US Navy radar associated with carrier and minesweeping operations during the mid-Cold War era.
AN/SPS-49 X11. Naval Vessels, Warship Systems and Naval Architecture: US long-range two-dimensional air search radar.
AN/SPY-1 X11. Naval Vessels, Warship Systems and Naval Architecture: Passive electronically scanned S-band radar of the Aegis system.
AN/SPY-1A X11. Naval Vessels, Warship Systems and Naval Architecture: Initial Aegis variant on CG-47 through CG-58.
AN/SPY-1B X11. Naval Vessels, Warship Systems and Naval Architecture: Improved Aegis variant on later Ticonderoga cruisers.