Glossary

Maritime glossary, terms beginning with A (page 14)

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

Showing 250 of 3739 terms (page 14 of 15).

ATALANTA X22. Piracy, Maritime Security and Armed Protection: EU NAVFOR counter-piracy operation off Somalia, launched December 2008 and extended to 2026.
Atalanta (EUNAVFOR Operation) E1. Maritime security, geopolitics and risk: EU naval mission countering piracy off Somalia.
ATB X13. Marine Salvage and Wreck Removal: Articulated Tug Barge, integrated unit used in US coastal oil response and lightering.
ATCM X133. Polar Research Vessels and Polar Code Regimes: Antarctic Treaty Consultative Meeting, annual decision-making forum among 29 Consultative Parties.
ATCM Measure X27. Polar Code, Ice Navigation and Polar Operations: Legally binding instrument adopted at ATCM and ratified by Consultative Parties.
ATD X15. Ports, Terminals and Stevedoring: Actual Time of Departure recorded on the statement of facts.
ATD (Azimuth Tractor Drive) X30. Tug Operations and Harbour Towage: Tractor configuration using azimuth thrusters located under the forward hull.
ATDNSHINC (Any Time Day or Night Sundays and Holidays Included) X17. Chartering, Shipbroking and Freight Trading: NOR tendering basis irrespective of working hours.
ATEX Directive 2014/34/EU X110. LNG Bunkering Infrastructure and Vessels: European Union directive on equipment intended for use in potentially explosive atmospheres, applied to LNG bunkering equipment in EU ports.
ATEX-Equivalent Standards A2. Maritime safety legislation: SOLAS and its codes: Referenced via IEC 60079 for hazardous-area equipment in IMDG and IGF contexts.
ATF X11. Naval Vessels, Warship Systems and Naval Architecture: Fleet ocean tug, USN designation.
ATG X115. Marine Bunker and Cargo Surveying: Automatic Tank Gauging system using radar, servo, or capacitance technology to measure liquid level continuously inside a marine fuel or cargo tank.
ATG Sherlock X155. Marine Surveying Practice and Cargo Inspection: A proprietary acoustic emission system supplied by ATG for testing hatch cover and weathertight closure tightness without water.
Athena X124. Dredging Industry and Reclamation Contractors: Jan De Nul CSD of 17,729 kW total installed, named after the Greek goddess of wisdom.
Athens X85. Ferries, Ro-Pax Operators and Routes: Greek capital whose port of Piraeus is the busiest passenger port in Europe by throughput.
Athens 1976 Protocol X158. IMO Conventions, Protocols, Codes, and Resolutions: First Protocol to the Athens Convention, adopted 19 November 1976 and entered into force 30 April 1989, substituting SDR for Poincare francs.
Athens 1990 Protocol X158. IMO Conventions, Protocols, Codes, and Resolutions: Second Protocol to the Athens Convention, adopted 29 March 1990 but never entered into force, superseded by the 2002 Protocol.
Athens Convention 1974 X51. Maritime Arbitration, Law and BIMCO Clauses: The Convention Relating to the Carriage of Passengers and Their Luggage by Sea, establishing carrier liability limits for passenger claims.
Athens Convention 2002 X4. Marine Insurance, P&I and Claims: Protocol to the 1974 Athens Convention on Carriage of Passengers and their Luggage by Sea, supported by P&I blue cards.
Athens Convention 2002 Protocol (PAL) X51. Maritime Arbitration, Law and BIMCO Clauses: The Protocol updating the 1974 Convention with strict liability for shipping incidents and increased SDR limits.
Athens Protocol 2002 X158. IMO Conventions, Protocols, Codes, and Resolutions: Protocol to the Athens Convention, adopted 1 November 2002 and entered into force 23 April 2014, raising liability limits and adding compulsory insurance.
Athens shipbroking cluster X71. Shipbrokers and Brokerage Firms: Concentration of dry, tanker, and S&P brokers in Piraeus serving Greek owners.
Athens Stock Exchange X49. Ship Finance, Leasing and Maritime Capital Markets: Greek exchange known as ATHEX, home to listings of several Greek shipping companies.
Athina X85. Ferries, Ro-Pax Operators and Routes: Hellenic Seaways conventional Aegean ferry.
Athwartship X15. Ports, Terminals and Stevedoring: across the ship from one side to the other.
Athwartship Lashing X9. Cargo Securing, Lashing and Stability Vocabulary: Lashing oriented transversely to the ship's centerline.
Athwartship line shaft alignment X38. Propellers, Stern Gear and Shaft Lines: Lateral alignment check performed in addition to vertical sag-and-gap to verify shaft centerline in plan view.
Athwartship Securing X9. Cargo Securing, Lashing and Stability Vocabulary: Restraint primarily resisting transverse forces from rolling.
Athwartships B1. Naval Architecture: Direction transverse to the ship's centerline.
ATIS X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Automatic Transmitter Identification System used on inland VHF radios in Europe under the RAINWAT agreement.
ATL X6. Container, Intermodal and Trade Codes: Automatic twistlock, deck twistlock that locks on stacking without manual handling.
Atlanta MOU X127. Maritime Security, Anti-Piracy and PMSCs: 2009 understanding between EU NAVFOR and Kenya on transfer of suspected pirates for prosecution, later replaced by Seychelles and Mauritius agreements.
Atlantic Area X130. National Coast Guards and Cutter Fleets: USCG operational command headquartered at Portsmouth, Virginia, responsible for east of the Rocky Mountains plus Caribbean and Atlantic.
Atlantic bluefin tuna X10. Marine Biology, Fisheries and Oceanography: *Thunnus thynnus*, a large highly migratory pelagic managed by ICCAT.
Atlantic Bluefin Tuna (Thunnus thynnus) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: ICCAT-managed highly migratory species with separate eastern and western stocks, the eastern stock having recovered sufficiently to lift quota to 40,570 tonnes for 2024.
Atlantic Brokers X71. Shipbrokers and Brokerage Firms: Generic label for brokers focused on transatlantic dry and tanker trades.
Atlantic Bunkering X72. Bunkering Hubs and Bunker Suppliers: Generic term for the Las Palmas, Tenerife, Cape Verde, and Dakar supply region serving transatlantic trades.
Atlantic Class X81. Project Cargo, Heavy-Lift and Module Carriers: Briese-managed multipurpose heavy-lift vessel design used in BBC Chartering operations.
Atlantic cod X10. Marine Biology, Fisheries and Oceanography: *Gadus morhua*, a North Atlantic gadid historically central to Newfoundland and North Sea fisheries.
Atlantic Cod (Gadus morhua) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Iconic whitefish historically fished on the Grand Banks and Barents Sea, currently MSC-certified in the Barents and Norwegian Sea fisheries.
Atlantic Convoy System F1. Maritime History: Allied convoy organization in both World Wars protecting merchant shipping across the North Atlantic.
Atlantic Crossing-1 (AC-1) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: 1998 transatlantic submarine cable system between New York, Germany, the Netherlands, and the UK, operated by Global Crossing.
Atlantic Crossing-2 (AC-2) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Transatlantic cable completed in 2001 linking Brookhaven, New York, with Whitesands Bay, UK, expanding Global Crossing capacity.
Atlantic Empress X13. Marine Salvage and Wreck Removal: 1979 VLCC collision and fire off Tobago, salvors recovered partial cargo before vessel sank.
Atlantic herring X10. Marine Biology, Fisheries and Oceanography: *Clupea harengus*, a key forage fish of the North Atlantic.
Atlantic II X124. Dredging Industry and Reclamation Contractors: Belgian backhoe pontoon operated by DEME.
Atlantic Intracoastal Waterway X33. Inland Navigation and Barge Operations: Inland navigable route along the US Atlantic coast from Norfolk, Virginia, to Key West, Florida.
Atlantic Mackerel X87. Fishing Vessels and Fisheries Management: Scomber scombrus, a key pelagic species shared by the EU, UK, Norway, Faroes, and Iceland.
Atlantic Marine Energy Test Site X57. Ocean Energy Beyond Wind: AMETS, a wave energy test site located off Belmullet in County Mayo, Ireland, operated by the Sustainable Energy Authority of Ireland.
Atlantic Packet Trade X39. Pre-1900 Maritime History: Scheduled sailing-packet service between New York and Liverpool inaugurated by the Black Ball Line in 1818.
Atlantic Pilot (Admiralty) X16. Nautical Science, Navigation and COLREGs: Sailing direction volumes covering the Atlantic Ocean.
Atlantic Pilotage Authority X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Canadian federal Crown corporation administering compulsory pilotage in the four Atlantic provinces.
Atlantic salmon X10. Marine Biology, Fisheries and Oceanography: *Salmo salar*, anadromous salmonid of the North Atlantic; also extensively farmed.
Atlantic salmon carriage X26. Reefer Containers and Cold Chain Logistics: Chilled 0 to -1 C, gel-pack or vacuum-pack, typical 14 to 18 day reefer transit.
Atlantic Sapphire X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Land-based Atlantic salmon RAS operator in Homestead, Florida, with target annual production of 90,000 tonnes once Phase 2 completes.
Atlantic Shores X42. Offshore Wind Installation and Cable Lay: US offshore wind lease area off New Jersey developed by Shell and EDF Renewables.
Atlantic Star X87. Fishing Vessels and Fisheries Management: Russian flagged pelagic supertrawler reported among the largest in the Northeast Atlantic fleet.
Atlantic Star, The [1974] AC 436 X143. Landmark Maritime Law Cases and Doctrines: House of Lords decision liberalising the English approach to forum non conveniens.
Atlantic Towing Limited X99. Marine Salvage Awards and SCOPIC: Canadian-based marine services company providing salvage and emergency response in the North Atlantic.
Atlantic Triangulation X135. Chemical Tanker Operators and IBC Code Cargoes: Standard Stolt and Odfjell trade pattern loading petrochemicals US Gulf to Europe, easy chemicals Europe to South America and vegetable oils South America to US Gulf.
Atlantic Yacht and Ship X125. Superyacht Industry, Builders and Brokers: Fort Lauderdale brokerage and yacht management firm.
Atlantico Line X132. High-Speed Craft, Hydrofoils and Ferry Operators: Azores operator running Lagoa, Furnas and other catamarans between Sao Miguel, Terceira and Faial.
Atlântico Sul X113. Drydock and Ship Repair Yards: Estaleiro Atlântico Sul located at the Suape industrial complex in Pernambuco, Brazil, built for VLCC and Suezmax construction and repair.
Atlantico Sul, Estaleiro X58. Shipbuilding Yards and Construction: Brazilian yard at Suape, Pernambuco, built for Petrobras tanker and platform orders.
Atlantis X128. Sail Training Ships and Tall Ship Associations: Dutch three masted topsail schooner built 1905 as a North Sea lightship, converted to sail training in 1984, 43 m length.
Atlantis (Boskalis) X105. Offshore Wind Farm Installation and Vessels: Boskalis subsea construction vessel used in offshore wind and subsea infrastructure work.
Atlantis Resources X57. Ocean Energy Beyond Wind: Tidal stream developer that led the MeyGen project in the Pentland Firth and was later renamed SAE Renewables.
Atlas Air X104. Project Cargo Forwarders and Heavy Transport: US cargo airline operating Boeing 747 freighters used in project charter markets.
Atlas Copco X63. Marine Auxiliary Machinery and Pumps: Swedish manufacturer of marine air compressors, including the LE and LF reciprocating ranges.
Atlas Copco GA X63. Marine Auxiliary Machinery and Pumps: Oil-injected rotary screw compressor series used for service and instrument air.
Atlas Copco LE X63. Marine Auxiliary Machinery and Pumps: Oil-lubricated reciprocating piston compressor range for low-pressure service air.
Atlas Copco LF X63. Marine Auxiliary Machinery and Pumps: Oil-free reciprocating piston compressor for instrument and breathing-quality air.
Atlas crane X15. Ports, Terminals and Stevedoring: legacy designation for several historic German harbor cranes.
Atlas Elektronik X74. AIS Data, Vessel Tracking and Maritime Intelligence: German naval electronics firm whose VTS portfolio includes coastal surveillance radars.
Atlas Ocean Voyages X97. Polar Expedition Cruise and IAATO Operations: Expedition cruise brand operating small polar-capable yachts including World Navigator (2021), World Voyager (2020), World Traveller (2022), and World Seeker (2024).
Atle X52. Polar Code, Arctic and Antarctic Shipping: Swedish state icebreaker built in 1974, lead ship of the Atle class operating in the Bothnian Bay.
Atmosphere Monitoring X1. Cargo Science, Commodities and Cargo Care: Sampling hold or tank gases for O2, CH4, CO, H2S.
Atmosphere testing instrument X170. SOLAS 1974 Convention: Chapter-by-Chapter Glossary: Portable multi-gas detector measuring oxygen, flammable gases, hydrogen sulphide, and carbon monoxide, required for enclosed-space entry by SOLAS XI-1/7 (MSC.350(92), in force 1 July 2016).
AtmosphereLoop X136. Reefer Vessels and Cool Chain Operators: Carrier Transicold trademark for its controlled atmosphere reefer module, swapping air for a low-oxygen blend.
Atmospheric Attenuation X68. Maritime Satcom and Telecommunications: Reduction in satellite signal strength caused by absorption and scattering in the atmosphere, more severe at Ka-band.
Atmospheric Boundary Layer D1. Physical and chemical oceanography and marine meteorology: Lowest part of the atmosphere directly influenced by contact with the sea surface.
Atmospheric Diving Suit X82. Saturation Diving and Offshore Diving Operations: One-atmosphere articulated suit such as the JIM or Newtsuit.
Atmospheric drain tank X19. Engine Room Watchkeeping and UMS Operations: Vented tank receiving steam condensate at atmospheric pressure for return to the feed system.
Atmospheric injection X70. Reefer Containers and Cold Chain Shipping: Process by which nitrogen or carbon dioxide is dosed into a controlled-atmosphere reefer container to displace oxygen.
Atmospheric LNG Tank X20. LNG Operations and Custody Transfer: Onshore full-containment or single-containment storage operating near atmospheric pressure, typically up to 200,000 m3 gross.
Atmospheric Pressure D1. Physical and chemical oceanography and marine meteorology: Force per unit area exerted by the weight of the atmosphere, measured in hectopascals.
Atmospheric pressure cargo X56. LNG/LPG Carriers and IGC Code: Cargo carried at or close to atmospheric pressure in fully refrigerated tanks, characteristic of LNG and large fully refrigerated LPG shipments.
Atmospheric refraction B3. Nautical Science: Bending of light reducing observed altitude.
Atmospheric residue X47. Marine Fuel Quality and ISO 8217: Bottoms fraction from atmospheric distillation that forms the backbone of most heavy fuel oil blends.
Atmospheric Storage of Ammonia X140. Ammonia as Marine Fuel and Hydrogen Shipping: Refrigerated tanks holding NH3 at minus 33 deg C and near-atmospheric pressure.
Atmospheric Test X5. Marine Surveying and Inspection: Gas, oxygen, and toxic measurement before entry into enclosed spaces.
Atmospheric Vacuum Breaker (AVB) X41. Cruise Ship Public Health and VSP/USPH: Backflow prevention device installed downstream of the last shutoff valve on a potable line.
Atoll X10. Marine Biology, Fisheries and Oceanography: Ring-shaped coral reef enclosing a lagoon, often surrounding a subsided volcanic island.
Atom Anodes X100. Marine Cathodic Protection and Anodes: A commercial supplier of sacrificial anodes for marine and offshore applications.
Atomflot X27. Polar Code, Ice Navigation and Polar Operations: Rosatomflot, Russian operator of the world's only fleet of nuclear-powered civilian icebreakers.
Atomic Absorption Spectroscopy X50. Ship Recycling, Demolition and Hong Kong Convention: A laboratory analytical method for confirming lead, cadmium, and mercury content in paint and gasket samples taken during IHM development.
Atomic Energy Organization of Iran (AEOI) X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: An Iranian state body designated by OFAC, included in maritime advisories because of its links to nuclear-related procurement shipments.
Atomization X45. Marine Paints, Coatings and Antifouling: Breaking up of liquid paint into a fine spray for application, achieved by airless, air-assisted, or conventional spray.
Atomizer X63. Marine Auxiliary Machinery and Pumps: Burner component that breaks fuel oil into fine droplets for efficient combustion in marine boilers.
AtoN X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Aid to Navigation, any device or system external to a vessel designed to assist navigation.
AtoN AIS X168. Bridge Electronics: Radar, ECDIS, GMDSS, and IBS: Aid-to-Navigation AIS message type 21 used to broadcast position and status of buoys and beacons.
Atovaquone-proguanil (Malarone) X36. Shipboard Medical, Telemedicine and Seafarer Health: Daily malaria prophylaxis tablet suitable for short-stay port calls.
ATP Agreement X26. Reefer Containers and Cold Chain Logistics: 1970 UNECE Agreement on the International Carriage of Perishable Foodstuffs and on the Special Equipment to be Used for Such Carriage.
ATPL(H) X31. Helicopter Operations on Ships: Airline Transport Pilot Licence Helicopter, highest civil helicopter pilot qualification.
ATR X6. Container, Intermodal and Trade Codes: Movement certificate proving free circulation in the EU-Turkey customs union.
Atrium X24. Cruise, Passenger Ship and Ferry Operations: Multi-deck central public space on cruise ships, typically the focal lobby.
Atrium Underwriting X117. Marine Insurance Markets, Captives and Reinsurance: Lloyd's managing agent operating Syndicate 609, owned by Stone Point Capital and Northshore Holdings, writing marine and energy.
ATSB X12. Maritime Casualties and Investigation: Australian Transport Safety Bureau, marine investigator established 2009 from the Australian Transport Safety Investigation Act 2003.
ATSB (Australian Transport Safety Bureau) X163. Marine Accident Investigation Agencies and Landmark Inquiries: Australian independent statutory agency under the Transport Safety Investigation Act 2003 whose marine division investigates accidents involving Australian-flag ships and foreign ships in Australian…
ATSL HullSkate X165. Marine Coatings, Antifouling, and Hull Husbandry: Singapore-developed in-water hull grooming system marketed for proactive cleaning under biofouling management plans.
ATT X73. Marine Hydrography, Charting and ENC: Admiralty Tide Tables.
Attaching Reinsurance X108. Marine Insurance and P&I Clubs: A treaty under which reinsurers accept liability for cessions during a specified period, used in P&I pool reinsurance structures.
Attachment X4. Marine Insurance, P&I and Claims: the moment risk under a policy commences.
Attachment of Risk X53. Marine Insurance, P&I and Hull Clauses: The moment cover incepts under the policy, defined for cargo by the warehouse-to-warehouse provision in the Institute Cargo Clauses.
Attachment Point X4. Marine Insurance, P&I and Claims: the loss level at which an excess of loss reinsurance layer begins to respond.
Attack Phase Matrix X22. Piracy, Maritime Security and Armed Protection: BMP framework dividing pirate attacks into Approach, Attack and Boarding stages.
Attack Surface X25. Maritime Cybersecurity, OT and IT: Sum of all paths through which an unauthorized user can attempt to access a system.
Attack Tree X48. Maritime Cybersecurity: Structured diagram decomposing a cyber attack goal into prerequisite steps, used in shipboard threat modeling.
Attack Vector X25. Maritime Cybersecurity, OT and IT: Specific path used to deliver a payload, such as phishing email, USB drop or unpatched VPN.
Attack-class X91. Submarines and Submarine Cable Systems: Cancelled Royal Australian Navy diesel-electric submarine program based on the French Shortfin Barracuda design, terminated in 2021.
Attained Annual Operational CII (Reg 28) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The actually achieved Carbon Intensity Indicator of a ship for a calendar year, reported and rated under MARPOL Annex VI from 1 January 2023.
Attained CII X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Operational carbon intensity actually achieved by a ship over a calendar year, compared against the Required CII to produce a rating from A to E.
Attained EEDI X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Calculated carbon dioxide emissions per transport work for a newbuild ship, verified at preliminary and sea trial stages under MEPC.245(66).
Attained EEDI (Reg 20 Annex VI) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The energy efficiency design index value actually achieved by a new ship as calculated and verified under MARPOL Annex VI Reg 20.
Attained Subdivision Index (A) X9. Cargo Securing, Lashing and Stability Vocabulary: Calculated probabilistic damage stability value under SOLAS Ch II-1 Part B-1; must equal or exceed R.
Attendance fee X32. Marine Pilotage and Pilot Operations: Pilotage charge levied when a pilot attends but does not perform a full transit, for example a cancelled job.
Attended Watch X80. Maritime Search and Rescue Coordination: Continuous human monitoring of a distress frequency.
Attending Surveyor X43. Marine Surveying and Warranty Surveying: The individual surveyor physically present on board during an inspection, as distinct from the firm or principal commissioning the work.
Attenuator (wave device) X57. Ocean Energy Beyond Wind: Wave energy converter that floats parallel to wave propagation and extracts energy from relative motion between hinged segments, exemplified by Pelamis.
Attestation (Price Cap) X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: A signed certification from a buyer, charterer, or service provider confirming that Russian crude or petroleum products were purchased at or below the applicable price cap.
Attestation Model X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: The compliance architecture published by the U.S. Treasury on November 22 2022 organizing recordkeeping duties across Tier 1, Tier 2, and Tier 3 service providers.
Attestation of Conformity X83. ISO Container Manufacturing and Leasing: Document issued by a notified body confirming a container meets ISO and CSC requirements.
Attica Group X85. Ferries, Ro-Pax Operators and Routes: Greek ferry holding owning Superfast Ferries, Blue Star Ferries, and Hellenic Seaways under the Marfin Investment portfolio.
Attitude Control X68. Maritime Satcom and Telecommunications: Spacecraft subsystem maintaining the satellite orientation relative to Earth and the Sun.
Attorney X114. Maritime Arbitration and Shipping Law Firms: United States practitioner who may act as both solicitor and advocate in admiralty proceedings.
Attribution X48. Maritime Cybersecurity: Process of identifying the actor behind a maritime cyber incident, considered notoriously difficult and rarely conclusive.
Atwood Oceanics X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Former US offshore drilling contractor acquired by Ensco in 2017 prior to Ensco's later rebranding as Valaris.
Atwood's formula B1. Naval Architecture: Geometric formulation of the righting arm via wedge transfer of buoyancy.
ATX Format X73. Marine Hydrography, Charting and ENC: A historical Admiralty exchange container format for ENC distribution, superseded by S-63 exchange sets.
Atyla X128. Sail Training Ships and Tall Ship Associations: Spanish gaff schooner built 1984 in Bermeo Basque Country, 31 m length, owned by Atyla Ship Foundation, runs international youth voyages under STI.
Auckland X84. Yacht Racing, Regattas and Sailing Governance: New Zealand city that hosted the America's Cup in 2000, 2003 and 2021.
Auckland Ports X138. Global Container Terminal Operators and Port Equipment: Listed company operating Fergusson Container Terminal, New Zealand's busiest box facility with 920,000 TEU throughput in FY2023.
Auckland Princes Wharf X164. Cruise Industry, Brands, Ship Classes, and Terminals: New Zealand's principal cruise berth on Queens Wharf and Princes Wharf in central Auckland, adjacent to the ferry terminal.
Auction X42. Offshore Wind Installation and Cable Lay: Competitive tender process used by Crown Estate, BOEM, and European regulators to award offshore wind seabed rights.
Auction (EUA) X34. Decarbonization, Alternative Fuels and Carbon Pricing: Primary market sale of EU allowances on EEX, the EU's common auction platform.
Auction Container X83. ISO Container Manufacturing and Leasing: Box sold by a depot or lessor through public auction at end of useful life.
Auction sale X71. Shipbrokers and Brokerage Firms: S&P method, often court-ordered, where brokers submit sealed bids on distressed tonnage.
Auction Settlement X44. Shipping Indices, FFAs and Freight Markets: Periodic price discovery mechanism used by some exchanges to fix daily settlement values for cleared freight contracts.
Audacia X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Allseas pipelay vessel of about 225 m length, designed for medium to large-diameter S-lay in water depths to roughly 3,500 m.
Audi Hamilton Island Race Week F4. Recreational Boating, Yachting and Sport: Australian offshore regatta.
Audible Signal X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Whistle, bell, or hailer signal used between pilot boat and ship to coordinate boarding under poor visibility.
Audiometry X36. Shipboard Medical, Telemedicine and Seafarer Health: Hearing test conducted at pre-employment medical examination per ILO/IMO Guidelines on Medical Examinations of Seafarers.
Audit X7. Flag State, Port State Control and Detention Vocabulary: Systematic verification of compliance with the ISM Code, ISPS Code, MLC, 2006, or III Code requirements.
Audit (External) A7. Compliance, certification and enforcement: Verification by classification society or RO of ISM, ISPS, and MLC systems.
Audit (Internal) A7. Compliance, certification and enforcement: ISM Code Element 12 audit of the SMS.
Audit Log X25. Maritime Cybersecurity, OT and IT: Tamper evident record of security relevant events on a system, required by ISO/IEC 27001 A.8.15.
Audit of Recognized Organization X142. Classification Societies and Class Notations: Vertical and horizontal audits conducted by IMO under the RO Code from 2015.
Audit Scheme A1. The IMO and the international regulatory framework: See IMSAS, the IMO Member State Audit Scheme.
Audit Survey X43. Marine Surveying and Warranty Surveying: A documentary and physical verification of a management system, certification, or operational standard, typically under ISM, ISPS, or MLC frameworks.
Audit Trail X5. Marine Surveying and Inspection: Documented chain of survey evidence including photos, logs, and instrument records.
Audit Trail (SIRE 2.0) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The cryptographically retained log of who edited an inspection report and when, supporting the program's integrity model.
Audit Trail, IHM X50. Ship Recycling, Demolition and Hong Kong Convention: The documentary chain linking each material declaration to its supplier conformity statement, kept aboard for verification surveys.
Audit, MLC X21. STCW Certificates, Crewing and Seafarer Welfare: Flag State inspection verifying the ship's DMLC Part I and II and Maritime Labour Certificate.
Auger dredger X124. Dredging Industry and Reclamation Contractors: Horizontal rotating screw cutter, marketed by IMS Dredges and Ellicott for fine-grained sediment.
Augmentation X16. Nautical Science, Navigation and COLREGs: Apparent increase in the Moon's semidiameter when near the zenith.
Augmentation (Moon) B3. Nautical Science: Apparent increase in Moon's semi-diameter near zenith.
Augsburg works X90. Marine Engine Specific Model Enumeration: Historic MAN factory in Bavaria where four-stroke medium-speed engine development and assembly are concentrated.
Augusta X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Sicilian port on the east coast, hub for ENI's Priolo refinery output and a regional bunkering point for Mediterranean tramp tonnage.
Auklet X10. Marine Biology, Fisheries and Oceanography: Small diving seabird of the family Alcidae found in the North Pacific.
AUKUS X91. Submarines and Submarine Cable Systems: Trilateral security partnership between Australia, the United Kingdom, and the United States announced in September 2021, including a pillar on nuclear-powered submarines.
Auld Mug F4. Recreational Boating, Yachting and Sport: Nickname for the America's Cup trophy.
Aural sound signal B3. Nautical Science: Whistle/horn signal per COLREGs Annex III.
Auramarine Sampler X115. Marine Bunker and Cargo Surveying: Brand of continuous drip sampler manufactured by Auramarine, accepted for MARPOL-compliant bunker sampling on bunker barges and vessel manifolds.
Aurelia aurita X10. Marine Biology, Fisheries and Oceanography: Moon jellyfish, a cosmopolitan coastal scyphozoan.
Aurelia TI 4030 X61. Marine Lubricants and Cylinder Oils: Total Lubmarine trunk piston engine oil with 30 BN for medium-speed engines burning distillate or low-sulfur residual fuel.
Aurelia XT 4040 X61. Marine Lubricants and Cylinder Oils: Total Lubmarine 40 BN trunk piston engine oil formulated for residual fuel operation in four-stroke marine engines.
AURIS X68. Maritime Satcom and Telecommunications: Onboard Inmarsat support service for FleetBroadband legacy reporting platforms, historically used by some shipping lines.
Auro X30. Tug Operations and Harbour Towage: Damen RSD-E Tug 2513 fully electric harbor tug delivered to Ports of Auckland in 2022.
Aurora X16. Nautical Science, Navigation and COLREGs: Polar atmospheric phenomenon caused by charged particles.
Aurora Expeditions X97. Polar Expedition Cruise and IAATO Operations: Australian polar expedition operator founded in 1991 running Greg Mortimer, Sylvia Earle, and Douglas Mawson.
AUS32 X69. EGCS Scrubbers, SCR and Marine Air Emissions: Aqueous urea solution at 32.5% concentration used as reductant in marine SCR systems.
AUS40 X69. EGCS Scrubbers, SCR and Marine Air Emissions: Aqueous urea solution at 40% concentration used in some marine SCR systems for compact dosing.
AusENC X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Distribution service of Australian ENCs from the AHO, integrated into AVCS and Primar catalogs.
AUSREP X73. Marine Hydrography, Charting and ENC: Australian Ship Reporting System, coordinated with chart products of the AHO and Joint Rescue Coordination Centre Australia.
Austal X58. Shipbuilding Yards and Construction: Australian shipbuilder with yards at Henderson and Mobile producing aluminum ferries and Littoral Combat Ships.
Austal Ships X132. High-Speed Craft, Hydrofoils and Ferry Operators: Western Australian shipbuilder founded 1987 in Henderson by John Rothwell, also operating a US yard in Mobile, Alabama for naval LCS and EPF programmes.
Austenitic stainless steel hull X77. Naval Mine Warfare and Mine Countermeasures: A non-magnetic stainless steel construction adopted for some minehunters, including certain Japanese MCMVs, to minimize magnetic signature.
Austevoll Seafood ASA X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Bergen-listed parent of Leroy Seafood Group and Pelagia, with major pelagic operations in Norway, Chile, Peru and the United Kingdom.
Australasian Coastal and Ocean Engineering Conference X119. Maritime Conferences, Trade Shows and Awards: Biennial since 1973, jointly run by Engineers Australia.
Australasian Institute of Marine Surveyors X114. Maritime Arbitration and Shipping Law Firms: Professional body whose surveyors regularly give expert evidence in shipping disputes.
Australia AMSA X66. Port State Control and Regional MOUs: Australian Maritime Safety Authority, the PSC authority for Australia under Tokyo MOU.
Australia DAWE Biofouling Management Requirements X18. Ballast Water, Biofouling and Antifouling: Mandatory requirements administered by the Department of Agriculture, Water and the Environment from 15 June 2022 for vessels arriving in Australian territorial seas.
Australia Group E1. Maritime security, geopolitics and risk: Export-control regime for chemical and biological weapons precursors.
Australia II X84. Yacht Racing, Regattas and Sailing Governance: The yacht, designed by Ben Lexcen with a winged keel, that broke the New York Yacht Club's 132-year America's Cup streak in 1983.
Australia Singapore Cable (ASC) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: 4,600 km submarine cable connecting Perth, Christmas Island, Jakarta, and Singapore, operated by SubPartners and Vocus.
Australia-Japan iron ore green corridor X34. Decarbonization, Alternative Fuels and Carbon Pricing: Announced ammonia-fueled bulk carrier route under the Clydebank Declaration framework.
Australian Ammonia Bunker Pilot X111. Methanol, Ammonia and Alternative Marine Fuels: Joint industry studies at the Port of Newcastle and Pilbara Port Authority in Western Australia evaluating ammonia ship-to-ship bunkering procedures.
Australian Antarctic Strategy 2016-2026 X133. Polar Research Vessels and Polar Code Regimes: Federal policy framing AAD operations including Nuyina procurement.
Australian Biosecurity Act 2015 X165. Marine Coatings, Antifouling, and Hull Husbandry: Commonwealth legislation under which Australia administers mandatory biofouling management requirements for vessels entering Australian waters from 15 June 2022.
Australian Hydrographic Office X73. Marine Hydrography, Charting and ENC: AHO, the Royal Australian Navy unit at Wollongong producing AUS-prefix paper charts and AU-cell ENCs.
Australian Hydrographic Office (AHO) X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Royal Australian Navy organization, established in 1942, responsible for charting Australian waters and producing AusENC and AUS-series paper charts.
Australian Hydrographic Service X73. Marine Hydrography, Charting and ENC: The former name of the AHO before 2017 corporate restructuring.
Australian International Shipping Register X98. Ship Registries and Flag States: Second register established in 2012 to support Australian-flagged international trading vessels.
Australian Marine Order 47 X163. Marine Accident Investigation Agencies and Landmark Inquiries: National instrument that supports ATSB investigations by setting requirements for casualty notification by Australian-flag operators.
Australian Maritime College F3. Seafaring Life, Education, Professions and Institutions: Specialist maritime university campus at Launceston, part of UTAS.
Australian Maritime College (AMC) X160. Maritime Academies, Universities, and STCW Certification: Specialist national institute of the University of Tasmania at Launceston founded in 1978 and incorporated into UTAS in 2008.
Australian Maritime Safety Authority X60. Marine Salvage and Wreck Removal: Commonwealth agency administering pollution response and marine incident coordination in Australia.
Australian Maritime Safety Authority Approved Training Provider X121. Maritime Education, Academies and Universities: AMSA-ATP designation under Marine Order 70 and Marine Order 73 governing seafarer training provider approvals in Australia.
Australian Maritime Safety Authority Training Standards F3. Seafaring Life, Education, Professions and Institutions: National seafarer certification scheme.
Australian Quarantine Treatment X83. ISO Container Manufacturing and Leasing: Pre-shipment inspection and treatment of container exteriors and timber floors required by Australian biosecurity rules.
Australian Reef Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Common short name for licensed coastal pilots conducting voyages through the Great Barrier Reef inner route and Torres Strait.
Australian Sailing F4. Recreational Boating, Yachting and Sport: National authority for sailing in Australia.
Australian Seafarers' Welfare Council X154. Maritime Welfare, Seafarer Charities, and MLC Rights: National welfare board coordinating port-based services across Australian ports under MLC Title 4.4.
Australian Shipping Registration Act 1981 X98. Ship Registries and Flag States: Statute governing the Australian General Shipping Register and the Australian International Shipping Register.
Australian Submarine Agency X91. Submarines and Submarine Cable Systems: Australian Government agency established in 2023 to deliver the AUKUS conventionally armed, nuclear-powered submarine capability.
Australis X97. Polar Expedition Cruise and IAATO Operations: Chilean operator running Stella Australis and Ventus Australis in the Chilean fjords and around Cape Horn, sometimes grouped with polar specialists.
AUTEC (Atlantic Undersea Test and Evaluation Center) X91. Submarines and Submarine Cable Systems: US Navy submarine and torpedo test range in the Bahamas.
Authalic Sphere D2. Hydrography, tides, waves, bathymetry and marine geology: Sphere of equal area to a reference ellipsoid, used in cartography.
Authenticated Vulnerability Scan X25. Maritime Cybersecurity, OT and IT: Scan performed with valid credentials to enumerate missing patches and misconfigurations.
Authentication X48. Maritime Cybersecurity: Process of verifying that a user, device, or message is what it claims to be, largely absent from legacy NMEA 0183 traffic.
Authorities Surveyor X167. Major Salvage Companies, Wreck Removals, and Equipment: Independent expert engaged during wreck removal to verify environmental and structural milestones.
Authority X146. Port State Control Regimes, MoUs, and Inspection Systems: In MoU terminology, the maritime safety administration of a participating State authorized to carry out PSC inspections.
Authority of the Rhine X33. Inland Navigation and Barge Operations: Informal reference to the CCNR, the oldest continuously operating international organization.
Authority pilot X32. Marine Pilotage and Pilot Operations: Pilot employed directly by a port or harbor authority rather than a private pilots' cooperative.
Authority to Board (ATB) X120. Marine Catering, Provisions and Ship Chandlers: Port-issued permit allowing a chandler launch or van to deliver stores alongside.
Authority to fix X71. Shipbrokers and Brokerage Firms: Written or recorded confirmation from a principal that the broker may conclude a deal on stated terms.
Authority to Proceed X155. Marine Surveying Practice and Cargo Inspection: A document the on-hire surveyor issues confirming the vessel is in agreed condition and the charterer may commence employment.
Authorization X48. Maritime Cybersecurity: Process of granting an authenticated identity permission to perform specific actions on shipboard systems.
Authorization Agreement X7. Flag State, Port State Control and Detention Vocabulary: Written agreement between flag State and RO setting out delegated functions, reporting and audit terms.
Authorization of Ship Recycling Facility X28. Ship Recycling and End-of-Life: Competent authority approval under HKC Regulation 16 and MEPC.211(63).
Authorization, DASR X50. Ship Recycling, Demolition and Hong Kong Convention: The Document of Authorization to conduct Ship Recycling issued by the competent authority of the recycling state to an HKC-compliant yard.
Authorized doctor X21. STCW Certificates, Crewing and Seafarer Welfare: Medical practitioner approved by the flag State to issue STCW medical fitness certificates.
Authorized Economic Operator (AEO) E1. Maritime security, geopolitics and risk: Customs-recognized trusted trader with simplified controls.
Authorized Officer X41. Cruise Ship Public Health and VSP/USPH: VSP-credentialed environmental health officer empowered to board, inspect, and document cruise ship conditions in US ports.
Authorized Organization X7. Flag State, Port State Control and Detention Vocabulary: Body delegated by a flag State to issue statutory certificates, often a classification society acting as RO.
Authorized Packaging X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: Packaging that bears valid UN specification marks and conforms to Chapter 6.1, 6.3, 6.5, or 6.6 test reports.
Authorized Person X75. IMDG Code, Classes, Packing and Segregation: Individual qualified under IMDG 1.3 training requirements to perform classification, packing or documentation.
Authorized Recognized Organization X98. Ship Registries and Flag States: Classification society delegated to perform statutory work on behalf of a flag administration under written agreement.
Authorized representative X12. Maritime Casualties and Investigation: Person designated by a state, owner, or class to interface with investigators.
Authorized Ship Recycling Facility ASRF X28. Ship Recycling and End-of-Life: Yard holding a current Document of Authorization to recycle ships DASR.
Auto carrier (PCC/PCTC) B5. Ship Types and Individual Vessels: Pure car or pure car/truck carrier.
Auto changeover X19. Engine Room Watchkeeping and UMS Operations: Automatic transfer between duty and standby pumps on low pressure or running signal failure.
Auto DSC X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Automatic DSC distress alert function on VHF/MF/HF radios.
Auto Express 82 X132. High-Speed Craft, Hydrofoils and Ferry Operators: Austal aluminium catamaran platform of 82 m used by operators including Atlanticoline and Sea Express.
Auto Ignition Temperature X1. Cargo Science, Commodities and Cargo Care: Minimum temperature at which a substance ignites without external flame.
Auto Stowing Boom X126. Marine Oil Spill Response and OPRC Regimes: Self-storing reel-deployable boom such as the Ro-Boom 1500R used on stern-mounted reels of OSRVs.
Auto-Acquire X68. Maritime Satcom and Telecommunications: Antenna feature that automatically searches for and locks onto the correct satellite after vessel position change or signal loss.
Auto-baiter (Longliner) X87. Fishing Vessels and Fisheries Management: Machine on demersal longliners that automatically baits each hook on the mainline during shooting.
Auto-Connect Reefer Plug X83. ISO Container Manufacturing and Leasing: Standardized reefer power plug compliant with IEC 60309 32A four-pin used across the global container fleet.
Auto-Lock X82. Saturation Diving and Offshore Diving Operations: Chamber lock that opens only after pressure equalization is verified.