Glossary
Maritime glossary, terms beginning with A (page 10)
All maritime glossary terms that begin with the letter A, drawn from every subject section. 3739 entries.
Showing 250 of 3739 terms (page 10 of 15).
- Anschutz Synapsis NX X168. Bridge Electronics: Radar, ECDIS, GMDSS, and IBS
- Raytheon Anschutz integrated navigation system family certified to IEC 61924-2 with common workstation hardware.
- ANSI X75. IMDG Code, Classes, Packing and Segregation
- American National Standards Institute, source of US recognized standards referenced in some IMDG portable tank designs.
- ANSI ASC X12 X6. Container, Intermodal and Trade Codes
- North American EDI standard family, parallel to UN/EDIFACT.
- ANSI/AGMA 9000 X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring
- American Gear Manufacturers Association standard for gear inspection used in reduction gearbox alignment and tooth wear assessment.
- ANSI/AISC 360 X54. Naval Architecture Software and IACS Rules
- US structural steel specification occasionally referenced for shipyard steel structures and offshore topsides.
- ANSI/NSF Standard 12 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for automatic ice makers used in cruise ship beverage and buffet stations.
- ANSI/NSF Standard 169 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for special purpose food equipment and devices used aboard cruise vessels.
- ANSI/NSF Standard 18 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for manual food and beverage dispensing equipment in passenger service areas.
- ANSI/NSF Standard 2 X41. Cruise Ship Public Health and VSP/USPH
- National Sanitation Foundation criterion for food equipment construction adopted by the VSP Construction Guidelines.
- ANSI/NSF Standard 20 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for commercial bulk milk dispensing equipment installed in self-service venues.
- ANSI/NSF Standard 25 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for vending machines for food and beverages located in crew areas and public alcoves.
- ANSI/NSF Standard 29 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for detergent and chemical feeders for commercial spray-type dishwashing machines.
- ANSI/NSF Standard 3 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for commercial spray-type dishwashing machines installed in cruise ship galleys.
- ANSI/NSF Standard 35 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for high pressure decorative laminates used as food contact surfaces.
- ANSI/NSF Standard 36 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for dinnerware used in commercial foodservice operations including cruise dining venues.
- ANSI/NSF Standard 37 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for air curtains for entranceways in food and food service establishments.
- ANSI/NSF Standard 4 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for commercial cooking, rethermalization, and powered food preparation equipment used aboard.
- ANSI/NSF Standard 5 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for water heaters, hot water supply boilers, and heat recovery equipment serving food areas.
- ANSI/NSF Standard 51 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for food equipment materials, frequently cited during VSP construction reviews.
- ANSI/NSF Standard 7 X41. Cruise Ship Public Health and VSP/USPH
- Certification standard for commercial refrigerators and storage freezers installed in cruise ship galleys and pantries.
- Anson's Voyage F1. Maritime History
- 1740 to 1744 circumnavigation by Commodore George Anson, notable for capturing the Manila galleon Nuestra Senora de Covadonga.
- ANSSI X25. Maritime Cybersecurity, OT and IT
- Agence nationale de la securite des systemes d'information, the French national cybersecurity authority.
- Ansteel X92. Marine Steel Suppliers and Shipbuilding Plate
- Anshan Iron and Steel Group, Chinese state owned integrated steel producer headquartered in Liaoning.
- Ansys X54. Naval Architecture Software and IACS Rules
- Multidisciplinary simulation software vendor whose Fluent, CFX, Mechanical, AQWA, and LS-DYNA products are widely used in shipbuilding.
- Ansys AQWA X54. Naval Architecture Software and IACS Rules
- Hydrodynamic diffraction and time-domain mooring analysis suite from Ansys used for offshore floaters and moored vessels.
- Ansys CFX X54. Naval Architecture Software and IACS Rules
- Element-based finite volume CFD solver from Ansys applied to turbomachinery and propeller flow studies.
- Ansys Fluent X54. Naval Architecture Software and IACS Rules
- General-purpose CFD solver from Ansys widely used for ship resistance, propulsion, and ventilation studies.
- Ansys Mechanical X54. Naval Architecture Software and IACS Rules
- Implicit finite element analysis solver from Ansys used for ship structural strength, vibration, and fatigue assessment.
- Antaeus Class X81. Project Cargo, Heavy-Lift and Module Carriers
- Cosco Shipping Specialized Carriers heavy-lift series operating on Asia-Europe and Asia-Americas trades.
- Antarctic Area (Annex I and V Special Area) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary
- The sea area south of latitude 60 degrees South, designated a special area under Annex I from 17 March 1992 and under Annex V from 17 March 1992.
- Antarctic Bottom Water (AABW) D1. Physical and chemical oceanography and marine meteorology
- Dense, cold water mass formed around Antarctica that fills the deep global ocean.
- Antarctic Bottom Water Formation D5. Coastal processes, sea-level, cryosphere and ocean observation science
- Process forming dense water around Antarctica.
- Antarctic Circle X133. Polar Research Vessels and Polar Code Regimes
- 66 degrees 33 minutes South, southern boundary of Polar Code Antarctic waters.
- Antarctic Circumpolar Current (ACC) D1. Physical and chemical oceanography and marine meteorology
- World's largest ocean current, flowing eastward around Antarctica.
- Antarctic Convergence X10. Marine Biology, Fisheries and Oceanography
- Frontal zone where cold Antarctic surface water meets warmer subantarctic water.
- Antarctic Fur Seal X97. Polar Expedition Cruise and IAATO Operations
- Otariid seal (Arctocephalus gazella) abundant on South Georgia and breeding on the South Shetland Islands.
- Antarctic Intermediate Water (AAIW) D1. Physical and chemical oceanography and marine meteorology
- Cool, low-salinity water mass found at intermediate depths in the Southern Hemisphere oceans.
- Antarctic krill X10. Marine Biology, Fisheries and Oceanography
- *Euphausia superba*, a keystone Southern Ocean species and major fishery resource.
- Antarctic Krill (Euphausia superba) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors
- Pelagic crustacean fished under CCAMLR rules in FAO Area 48, with a precautionary catch limit of 620,000 tonnes per year split among four subareas.
- Antarctic Krill Fishery X87. Fishing Vessels and Fisheries Management
- CCAMLR managed harvest of Euphausia superba primarily by Norwegian, Chinese, and Korean trawlers using continuous pumping systems.
- Antarctic Peninsula X27. Polar Code, Ice Navigation and Polar Operations
- Region of frequent IAATO tourist operations and dense ice navigation traffic.
- Antarctic Petrel X97. Polar Expedition Cruise and IAATO Operations
- True Antarctic seabird (Thalassoica antarctica) frequently sighted around pack ice during expedition voyages.
- Antarctic Protocol X52. Polar Code, Arctic and Antarctic Shipping
- Protocol on Environmental Protection to the Antarctic Treaty signed at Madrid on 4 October 1991, designating Antarctica a natural reserve devoted to peace and science.
- Antarctic Sea Ice D5. Coastal processes, sea-level, cryosphere and ocean observation science
- Sea ice surrounding Antarctica, exhibiting strong seasonal cycle.
- Antarctic Sound X97. Polar Expedition Cruise and IAATO Operations
- Passage between the tip of the Antarctic Peninsula and the Joinville Island group, often used to access the Weddell Sea.
- Antarctic Special Area A3. Marine environmental legislation: MARPOL and its annexes
- Designated under MARPOL Annexes I, II, and V.
- Antarctic Special Area (MARPOL Annex I) X27. Polar Code, Ice Navigation and Polar Operations
- Designation under MARPOL Annex I prohibiting oil discharge in Antarctic waters south of 60 degrees S.
- Antarctic Specially Managed Area X97. Polar Expedition Cruise and IAATO Operations
- ASMA designation under Annex V of the Madrid Protocol allowing coordinated management of areas with multiple activities.
- Antarctic Specially Protected Area X97. Polar Expedition Cruise and IAATO Operations
- ASPA designation under Annex V of the Madrid Protocol requiring a permit and management plan for entry.
- Antarctic Toothfish X87. Fishing Vessels and Fisheries Management
- Dissostichus mawsoni, longlined under CCAMLR conservation measures in the Ross Sea and adjacent areas.
- Antarctic Treaty X52. Polar Code, Arctic and Antarctic Shipping
- International agreement signed in Washington on 1 December 1959 reserving the area south of 60 degrees South for peaceful purposes and scientific cooperation.
- Antarctic Treaty (1959) X27. Polar Code, Ice Navigation and Polar Operations
- International agreement reserving Antarctica for peaceful and scientific use; entered into force 1961.
- Antarctic Treaty Consultative Meeting X97. Polar Expedition Cruise and IAATO Operations
- ATCM, the annual governance forum where Consultative Parties adopt measures, decisions, and resolutions for the Antarctic Treaty area.
- Antarctic Treaty Consultative Meeting (ATCM) X27. Polar Code, Ice Navigation and Polar Operations
- Annual meeting of Antarctic Treaty parties adopting measures, decisions, and resolutions.
- Antarctic Treaty System X52. Polar Code, Arctic and Antarctic Shipping
- Collective term for the Antarctic Treaty, the Madrid Protocol, CCAMLR, and related instruments governing activities south of 60 degrees South.
- Antarctic Treaty System (ATS) X27. Polar Code, Ice Navigation and Polar Operations
- Collective of the Antarctic Treaty plus protocols including the Madrid Protocol and CCAMLR.
- Antarctica New Zealand X133. Polar Research Vessels and Polar Code Regimes
- Crown entity operating Scott Base on Ross Island, contracts ice-strengthened tonnage seasonally.
- Antarctica21 X97. Polar Expedition Cruise and IAATO Operations
- Chilean fly-cruise operator pioneering Drake Passage air bridges to King George Island using Magellan Discoverer and Magellan Explorer.
- Antares X114. Maritime Arbitration and Shipping Law Firms
- A vessel name involved in The Antares appeal heard in the Court of Appeal of England and Wales.
- Antares Underwriting X117. Marine Insurance Markets, Captives and Reinsurance
- Lloyd's Syndicate 1274, a marine and specialty writer owned by QIC Global.
- Antarpply Expeditions X97. Polar Expedition Cruise and IAATO Operations
- Argentine polar operator based in Ushuaia running MV Ushuaia for Antarctic Peninsula voyages.
- Antenna Gain X68. Maritime Satcom and Telecommunications
- Measure of how strongly an antenna concentrates radio energy in a given direction, expressed in dBi.
- Antenna height correction X16. Nautical Science, Navigation and COLREGs
- Adjustment for height of GNSS or radar antenna above the waterline.
- Antenna mine X77. Naval Mine Warfare and Mine Countermeasures
- A moored contact mine fitted with copper antennas that generate a galvanic firing voltage on contact with a steel hull.
- Antenna Pointing X68. Maritime Satcom and Telecommunications
- Process of orienting a maritime antenna toward the satellite and maintaining lock despite vessel motion.
- Anthem of the Seas X24. Cruise, Passenger Ship and Ferry Operations
- Royal Caribbean Quantum class ship delivered 2015.
- Anthropogenic D3. Marine environmental science, pollution and conservation
- Originating from human activity.
- Anthropology of Seafaring F2. Maritime Culture, Heritage, Archaeology, Art and Museums
- Subfield studying maritime communities and their lifeways.
- Anti-arbitration injunction X152. Maritime Arbitration and Dispute Resolution
- Court order restraining a party from continuing arbitration proceedings, disfavored in pro-arbitration jurisdictions like England, Singapore, and Hong Kong.
- Anti-Caking Agent X1. Cargo Science, Commodities and Cargo Care
- Additive to keep fertilizers and salt free-flowing.
- Anti-Collision Radar X109. Maritime Autonomous Surface Ships and MASS Code
- A marine radar configured with automatic radar plotting aid functions used as a primary obstacle detection sensor in MASS sensor stacks.
- Anti-Concurrent Causation X53. Marine Insurance, P&I and Hull Clauses
- A clause stipulating that a loss is excluded if an excluded peril contributes to it, in any sequence, alongside an insured peril.
- Anti-Condensation Heater X67. Marine Electrical Systems and Shore Power
- Resistive heater inside a marine motor or generator that prevents moisture condensation when idle.
- Anti-corrosive coat X165. Marine Coatings, Antifouling, and Hull Husbandry
- A coating layer whose primary function is to prevent steel substrate oxidation, distinct from antifouling or finish coats.
- Anti-Corruption Policy X40. Tanker Vetting, SIRE and VIQ
- A documented operator policy required under TMSA Element 13 (Maritime Security) and corporate-governance expectations referenced in vetting scopes.
- Anti-foam additive X149. Marine Fuels, Bunkering, and Alternative Fuels
- A silicone-based additive added at the refinery or during bunkering to prevent foaming of distillate fuels during tank fill.
- Anti-foaming agent X47. Marine Fuel Quality and ISO 8217
- Silicone or polyacrylate additive used to suppress foam during bunkering and tank stripping.
- Anti-Fouling Paint X100. Marine Cathodic Protection and Anodes
- A coating applied below the waterline whose biocidal action complements but does not replace cathodic protection.
- Anti-fouling Paint Removal X50. Ship Recycling, Demolition and Hong Kong Convention
- The mechanical or hydroblasting removal of biocidal underwater hull coatings before cutting, with abrasive residue captured under Part II IHM.
- Anti-fouling system C2. Ship operations, crewing and technical management
- Coating regulated under the AFS Convention.
- Anti-Fouling System (AFS Convention) B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling
- IMO 2001 Convention banning TBT.
- Anti-Fouling System AFS X28. Ship Recycling and End-of-Life
- Hull coating regulated under the IMO AFS Convention 2001, listed in IHM if TBT or cybutryne is present.
- Anti-Fouling System Certificate A4. Other IMO and ILO conventions and codes
- Required under AFS for ships of 400 GT and above.
- Anti-Fouling Systems Certificate X8. IACS, Class Rules and Class Notations
- statutory certificate issued under IMO AFS Convention, typically by RO on flag behalf.
- Anti-Icing X31. Helicopter Operations on Ships
- Engine and rotor blade systems preventing ice accretion during flight in icing conditions.
- Anti-malware X25. Maritime Cybersecurity, OT and IT
- Software that detects, blocks and removes malicious code on endpoints and servers.
- Anti-Money Laundering (AML) X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes
- The body of obligations on financial institutions and maritime service providers under FATF Recommendations and national laws to detect funds linked to sanctioned trade.
- Anti-Piracy Bridge Procedures E1. Maritime security, geopolitics and risk
- BMP-aligned hardening, lookout, and citadel readiness routines.
- Anti-Piracy Course X22. Piracy, Maritime Security and Armed Protection
- Recommended transit route through a high risk area, published in BMP and updated by UKMTO and MSCHOA.
- Anti-Piracy Lane X127. Maritime Security, Anti-Piracy and PMSCs
- See IRTC, the Internationally Recommended Transit Corridor across the Gulf of Aden.
- Anti-Piracy Plan X40. Tanker Vetting, SIRE and VIQ
- Vessel-specific procedures aligned with BMP5 and reviewed under VIQ security and navigation chapters when transiting designated high-risk areas.
- Anti-Piracy Simulation Module X144. Bridge Simulators, Engine Room Simulators, and Maritime Training Equipment
- Add-on scenario library covering Gulf of Aden, Gulf of Guinea, and Sulu-Celebes high-risk areas.
- Anti-Piracy Training F3. Seafaring Life, Education, Professions and Institutions
- BMP5 and onboard drills for high-risk areas.
- Anti-Piracy Watch X22. Piracy, Maritime Security and Armed Protection
- Dedicated lookout posted in addition to the navigational watch during HRA transits.
- Anti-Pollution Boom X141. Marine Salvage Industry and Wreck Removal Contractors
- Floating barrier deployed to contain oil released by a casualty, a core item in every salvor's stockpile.
- Anti-Pollution Operations X99. Marine Salvage Awards and SCOPIC
- Salvage activities specifically directed at preventing or minimizing escape of oil, chemicals, or other harmful substances.
- Anti-Pollution Vessel X60. Marine Salvage and Wreck Removal
- Specialized craft equipped with recovery tanks, skimmers, and booms for at sea oil spill response.
- Anti-rack lashing X76. Stevedoring, Lashing and Cargo Securing
- Diagonal rod arrangement intended to resist parallelogram distortion of a container stack.
- Anti-rolling tank B2. Marine Engineering
- Passive or active U-tube for roll damping (Frahm tank).
- Anti-Ship Cruise Missile (ASCM) E2. Naval, defence and maritime law enforcement
- Sea-skimming or supersonic anti-surface missile.
- Anti-singing edge X38. Propellers, Stern Gear and Shaft Lines
- Chamfered or beveled trailing edge geometry applied to suppress vortex-shedding tonal noise (propeller singing).
- Anti-siphon Loop X41. Cruise Ship Public Health and VSP/USPH
- Pipe configuration that prevents reverse flow of contaminated water into the potable system through vacuum break.
- Anti-Slip Mat X9. Cargo Securing, Lashing and Stability Vocabulary
- High-friction material (rubber, IICL-rated) raising effective coefficient of friction in lashing calculations.
- Anti-Snag X169. Container Terminal Cranes, Yard Equipment, and Lashing
- STS crane spreader-trolley control function that detects unexpected resistance during hoist and stops motion to prevent snagging a container or cell guide.
- Anti-spoofing GNSS Receiver X25. Maritime Cybersecurity, OT and IT
- Receiver with techniques such as multi-antenna direction of arrival and signal authentication to resist GPS spoofing.
- Anti-Static Additive X1. Cargo Science, Commodities and Cargo Care
- Additive in jet fuel to dissipate charge during loading.
- Anti-Submarine Warfare (ASW) E2. Naval, defence and maritime law enforcement
- Operations to detect and neutralize submarines.
- Anti-Suit Injunction X51. Maritime Arbitration, Law and BIMCO Clauses
- An order of an arbitral tribunal or supervisory court restraining a party from commencing or continuing foreign proceedings in breach of an arbitration agreement.
- Anti-Sway X169. Container Terminal Cranes, Yard Equipment, and Lashing
- Crane control system that actively damps spreader pendulum motion during trolley travel, fitted on Konecranes, ZPMC, Liebherr, and Kalmar STS and RTG cranes.
- Anti-Technicality Clause X17. Chartering, Shipbroking and Freight Trading
- Time charter provision requiring the owner to warn the charterer before withdrawing the vessel for non-payment of hire.
- Anti-Terrorism, Crime and Security Act 2001 (UK) X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes
- A predecessor statute that established powers later consolidated under the Sanctions and Anti-Money Laundering Act 2018.
- Anti-virus Whitelisting X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents
- An application allow-list approach favored for ECDIS, IBS, and PMS workstations where signature-based AV is unsuitable due to type-approval constraints.
- Antibes X125. Superyacht Industry, Builders and Brokers
- Quai des Milliardaires in Antibes, France is the historic Mediterranean home berth for crewed superyachts.
- Antibes Port Vauban X156. Superyacht Industry, Builders, and Yacht Charter Market
- Marina on the French Riviera widely regarded as Europe's largest yacht harbor by capacity for large yachts, with the dedicated IYCA Quai des Milliardaires berth row.
- Anticipated Steel Yield X50. Ship Recycling, Demolition and Hong Kong Convention
- The portion of light displacement tonnage that will be recovered as re-rollable plate, rebar feed, or melting scrap, typically 75 to 90 percent of LDT.
- Anticorrosive primer X45. Marine Paints, Coatings and Antifouling
- First or second coat in a marine paint system, usually epoxy-based, that provides the principal barrier against corrosion.
- Anticyclone X16. Nautical Science, Navigation and COLREGs
- High-pressure system with clockwise circulation in the Northern Hemisphere.
- Antiemetic X36. Shipboard Medical, Telemedicine and Seafarer Health
- Drug class (ondansetron, metoclopramide, cyclizine) used for vomiting and seasickness.
- Antifoam additive X61. Marine Lubricants and Cylinder Oils
- Silicone or polyacrylate species added to system and hydraulic oils to break foam at the oil and air interface.
- Antifoulant booster biocide X45. Marine Paints, Coatings and Antifouling
- Co-biocide added to a copper-based paint to control diatoms, algae, and slime not affected by copper alone.
- Antifouling X45. Marine Paints, Coatings and Antifouling
- Coating designed to prevent or reduce settlement and growth of marine organisms on submerged surfaces.
- Antifouling Application X113. Drydock and Ship Repair Yards
- Drydock coating step laying down self-polishing copolymer or biocide-free silicone paint to suppress marine growth and preserve hull efficiency.
- Antifouling Coating X88. Marine Surface Preparation and Coatings Application
- Final coating on submerged hulls designed to prevent settlement and growth of marine organisms by biocide release or low-surface-energy fouling release.
- Antifouling Paint D3. Marine environmental science, pollution and conservation
- Coating preventing marine organism attachment to ship hulls.
- Antifouling Survey X43. Marine Surveying and Warranty Surveying
- An inspection of the underwater hull paint system in drydock to confirm condition, coverage, and compliance with the AFS Convention.
- Antifouling system (AFS) X18. Ballast Water, Biofouling and Antifouling
- Coating, paint, surface treatment, or device used on a ship to control or prevent attachment of unwanted organisms.
- Antigoon X124. Dredging Industry and Reclamation Contractors
- DEME TSHD of 13,700 m3 capacity, named after the giant of Antwerp legend.
- Antigua X35. Yacht and Superyacht Industry
- Caribbean island and superyacht hub home to the Antigua Charter Yacht Show.
- Antigua and Barbuda Registry X98. Ship Registries and Flag States
- Open registry administered by ADOMS, popular with German-managed feeder containerships.
- Antigua Charter Yacht Show X35. Yacht and Superyacht Industry
- Annual December trade-only show at Falmouth and English Harbour for the Caribbean charter fleet.
- Antigua Sailing Week F4. Recreational Boating, Yachting and Sport
- Caribbean classic regatta held since 1968.
- Antikythera Mechanism F2. Maritime Culture, Heritage, Archaeology, Art and Museums
- Hellenistic geared astronomical computing device recovered from a wreck off Antikythera in 1900 to 1901.
- Antimalarial chemoprophylaxis X36. Shipboard Medical, Telemedicine and Seafarer Health
- Doxycycline, mefloquine, or atovaquone-proguanil (Malarone) regimens for crew calling at endemic ports.
- Antimony Pentafluoride X75. IMDG Code, Classes, Packing and Segregation
- UN 1732, Class 8 corrosive with Class 6.1 subsidiary risk, Packing Group I.
- Antioxidant X61. Marine Lubricants and Cylinder Oils
- Additive such as hindered phenol or aromatic amine that retards oxidative degradation of base oil in service.
- Antiroll Tank X9. Cargo Securing, Lashing and Stability Vocabulary
- Passive or active tank reducing roll amplitude, indirectly reducing securing demands.
- Antiskid coating X45. Marine Paints, Coatings and Antifouling
- Deck paint formulated with aggregate to provide slip resistance on walkways and helidecks.
- Antivirus X107. Maritime Cybersecurity and OT Security
- Software that detects and removes malicious code from endpoints aboard ship and ashore.
- Antivirus (AV) X139. Maritime Cybersecurity, OT Threats and Standards
- Signature-based malware detection commonly deployed on bridge IT but typically absent from PLCs and DP control nodes.
- Antivirus Signature X48. Maritime Cybersecurity
- Pattern used by anti malware to identify known threats, requiring periodic update on vessels with limited connectivity.
- Antiwear additive X61. Marine Lubricants and Cylinder Oils
- Compound such as ZDDP that forms a tribochemical film on rubbing surfaces to reduce wear in hydraulic and gear oils.
- Antonia Maersk X111. Methanol, Ammonia and Alternative Marine Fuels
- 16,200 TEU methanol dual-fuel container ship in the Maersk A-class series delivered from Hyundai Heavy Industries from 2025.
- Antonie X33. Inland Navigation and Barge Operations
- Hydrogen-fueled inland cargo vessel operated by Future Proof Shipping, in service from 2023 on Dutch waterways.
- Antonis P Lemos, The [1985] AC 711 X143. Landmark Maritime Law Cases and Doctrines
- House of Lords held that arrest jurisdiction extended to claims arising out of an agreement relating to the carriage of goods.
- Antonov Airlines X104. Project Cargo Forwarders and Heavy Transport
- Ukrainian state airline operating the surviving An-124 fleet for project charter work.
- Antonov An-124 Ruslan X104. Project Cargo Forwarders and Heavy Transport
- Soviet-designed four-engine heavy freighter widely chartered for outsize project cargo.
- Antonov An-225 Mriya X104. Project Cargo Forwarders and Heavy Transport
- Six-engine outsize freighter, the world's largest, destroyed at Hostomel in February 2022.
- Antwerp X116. Global Bunker Anchorages, Hubs and Supply Infrastructure
- ARA bunker port on the Scheldt, with Sea-Tank Terminal, ITC Rubis, and Antwerp Terminal and Processing Company supplying barge logistics for fuel oil and MGO.
- Antwerp Ammonia Import Terminal X140. Ammonia as Marine Fuel and Hydrogen Shipping
- Port of Antwerp-Bruges plan to expand existing Yara terminal to handle 1 Mtpa green NH3 imports by 2027.
- Antwerp Bunker Permit X72. Bunkering Hubs and Bunker Suppliers
- License issued by Port of Antwerp Bruges that bunker barges must hold to operate inside the Scheldt port limits.
- Antwerp Bunker Port X115. Marine Bunker and Cargo Surveying
- Belgian section of the ARA hub, one of the largest European bunkering locations, regulated by the Port of Antwerp-Bruges harbor master.
- Antwerp Bunkering Procedure X72. Bunkering Hubs and Bunker Suppliers
- Operational handbook covering pre transfer checks, MARPOL Annex VI documentation, and BDN issuance at Antwerp.
- Antwerp Container Repair Standard C3. Logistics, freight forwarding and multimodal trade
- Repair benchmark recognised by IICL members.
- Antwerp LNG Bunkering X110. LNG Bunkering Infrastructure and Vessels
- Port of Antwerp LNG bunkering operations served by Kairos and other bunker vessels working the Antwerp-Bruges complex.
- Antwerp Maritime Academy X121. Maritime Education, Academies and Universities
- Hogere Zeevaartschool Antwerpen, founded 1834, Belgium's sole nautical university college, granting Nautical Sciences and Marine Engineering masters with bilingual Dutch and English tracks.
- Antwerp Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations
- Brabantse Loodsen, the Flemish river pilots subgroup operating the Scheldt from Vlissingen to Antwerp under the Loodswezen umbrella.
- Antwerp Port Hack 2011 to 2013 X25. Maritime Cybersecurity, OT and IT
- Drug trafficking case where attackers compromised port IT systems to release containers, prosecuted in Belgium and the Netherlands.
- Antwerp Provisioning Hub X120. Marine Catering, Provisions and Ship Chandlers
- Major North Range supply port with ISSA chandlers covering tankers and dry bulkers transiting the Westerschelde.
- Antwerp Reefer X136. Reefer Vessels and Cool Chain Operators
- The Port of Antwerp Bruges handles roughly 1 million reefer TEU per year, supported by Port Plus Bonded Warehouses and dedicated reefer racks on terminal aprons.
- Antwerp Repair Cluster X113. Drydock and Ship Repair Yards
- Concentration of ship repair operations around the Hansadok and adjoining basins in the Port of Antwerp serving the Rhine-Scheldt trade.
- Antwerp Right Bank X72. Bunkering Hubs and Bunker Suppliers
- Cluster of terminals on the right bank of the Scheldt where most Antwerp bunker barges load before delivery.
- Antwerp Towage X79. Tugs and Towage Industry
- Boluda-owned harbor towage operator serving the Port of Antwerp.
- Antwerp Tug Services (ATS) X30. Tug Operations and Harbour Towage
- Belgian harbor towage operator serving the Port of Antwerp.
- Antwerp XL X119. Maritime Conferences, Trade Shows and Awards
- Annual breakbulk and project cargo exhibition launched 2019 at Antwerp Expo, organized by Easyfairs.
- Antwerp-Bruges X116. Global Bunker Anchorages, Hubs and Supply Infrastructure
- Combined port authority formed on 22 April 2022 from the merger of the Port of Antwerp and Port of Zeebrugge, jointly Europe's largest bunkering complex by volume after Rotterdam.
- Antwerp-Bruges Port Authority X138. Global Container Terminal Operators and Port Equipment
- Belgian public limited company formed on 22 April 2022 by the merger of Antwerp and Zeebrugge, handling 271 million tonnes in 2023.
- Anuvu X68. Maritime Satcom and Telecommunications
- Connectivity and content provider, formed from the maritime and aviation operations of Global Eagle Entertainment.
- ANZAC-class X62. Naval Warships and Combat Systems
- Frigate class operated by the Royal Australian Navy and Royal New Zealand Navy, based on the Blohm and Voss MEKO 200 design.
- AODC X82. Saturation Diving and Offshore Diving Operations
- Association of Offshore Diving Contractors, a predecessor body to IMCA.
- AOE X11. Naval Vessels, Warship Systems and Naval Architecture
- Fast combat support ship, USN designation, e.g., Supply class T-AOE-6.
- AOG X31. Helicopter Operations on Ships
- Aircraft On Ground, status indicating helicopter unserviceable at remote location.
- Aoka Mizu FPSO X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels
- Bluewater-operated FPSO on the Lancaster field west of Shetland.
- Aomi Cruise Terminal X164. Cruise Industry, Brands, Ship Classes, and Terminals
- A Tokyo cruise berth on Odaiba island used by larger ships that cannot pass under Rainbow Bridge to reach Harumi.
- Aon Captive and Insurance Management X117. Marine Insurance Markets, Captives and Reinsurance
- Aon's captive consulting and management arm advising on Bermuda, Cayman, Vermont, and Guernsey domiciles.
- Aon Cyber X25. Maritime Cybersecurity, OT and IT
- Broking practice within Aon specializing in cyber insurance placement and incident response retainers.
- Aon Marine X157. Marine Loss Adjusters, GA Practice, and Casualty Firms
- Global insurance broker with a dedicated marine practice handling placement and claims advocacy for hull, cargo, and liability risks.
- AOR X11. Naval Vessels, Warship Systems and Naval Architecture
- Replenishment oiler.
- Aoraki Range X80. Maritime Search and Rescue Coordination
- Reference geographic feature used by RCCNZ for South Island incidents.
- AOS X102. Seafarer Welfare and Maritime Charities
- Common abbreviation for Apostleship of the Sea, retained in national branding such as AOS USA and AOS Australia after the Stella Maris rebrand.
- AOS GB X102. Seafarer Welfare and Maritime Charities
- Apostleship of the Sea Great Britain, the Catholic Bishops' Conference seafarers' charity now operating as Stella Maris UK.
- AOS USA X102. Seafarer Welfare and Maritime Charities
- Apostleship of the Sea of the United States of America, the US Catholic seafarers' ministry headquartered in New Orleans.
- AOSI (Alternative Outsourced Shipping Initiative) D6. Decarbonization, emissions and alternative fuels
- Not standard.
- AP Manual (Asia-Pacific PSC Manual) X146. Port State Control Regimes, MoUs, and Inspection Systems
- The operational manual issued by the Tokyo MoU Secretariat for harmonized inspection procedures across member authorities.
- AP Moller Maersk X25. Maritime Cybersecurity, OT and IT
- Danish liner operator hit by NotPetya in June 2017 with reported losses of about USD 300 million.
- AP Moller-Maersk Decarbonization Strategy D6. Decarbonization, emissions and alternative fuels
- Carrier strategy to deploy methanol-fueled ships.
- AP4 mine X77. Naval Mine Warfare and Mine Countermeasures
- A historical contact sea mine of the inter-war and Second World War period employed by several European navies.
- APA X32. Marine Pilotage and Pilot Operations
- American Pilots' Association, national body representing state-licensed pilots in the United States.
- APA (Advance Provisioning Allowance) X35. Yacht and Superyacht Industry
- Pre-charter cash float, typically 25 to 35 percent of the charter fee, used to pay for fuel, food, dockage, and incidentals.
- APAC SIRE Pool X40. Tanker Vetting, SIRE and VIQ
- Informal industry shorthand for the cohort of SIRE-accredited inspectors based in Asia-Pacific ports.
- APAR X11. Naval Vessels, Warship Systems and Naval Architecture
- Active Phased Array Radar, Thales X-band illuminator on De Zeven Provincien and Sachsen.
- APASA X86. Port Agency, Husbandry and Disbursement
- Asian and Pacific Shipowners Association acting on policy matters affecting the region.
- APBA Bunker License X72. Bunkering Hubs and Bunker Suppliers
- Authorization from Autoridad Portuaria Bahia de Algeciras required for any barge supplying bunkers in Algeciras Bay.
- APCIS X66. Port State Control and Regional MOUs
- Asia-Pacific Computerized Information System, the Tokyo MOU regional PSC database.
- APCIS (Asia-Pacific Computerized Information System) X146. Port State Control Regimes, MoUs, and Inspection Systems
- The centralized PSC information system of the Tokyo MoU, hosted in Vladivostok, Russia, recording inspections and deficiencies across 21 member authorities.
- Aperam X92. Marine Steel Suppliers and Shipbuilding Plate
- Stainless and specialty alloy producer, owner of the Imphy plant in France that produces Invar 36 for LNG membrane.
- Apex X64. Cruise Industry Operators, Brands and Ships
- Celebrity Cruises Edge-class ship delivered in 2020.
- Apex Class X81. Project Cargo, Heavy-Lift and Module Carriers
- Spliethoff's A-Type multipurpose heavy-lift vessel class with twin cranes.
- Apex Predator Survey Launch X129. Hydrographic Offices, Survey Vessels and Marine Cartography
- NOAA hydrographic survey launch class deployed from Thomas Jefferson and other coastal mapping ships for shallow-water multibeam work.
- Aphelion X16. Nautical Science, Navigation and COLREGs
- Point in Earth's orbit farthest from the Sun.
- APHIS X6. Container, Intermodal and Trade Codes
- Animal and Plant Health Inspection Service, US agency enforcing wood packaging and quarantine rules.
- APHIS Treatment Manual X136. Reefer Vessels and Cool Chain Operators
- USDA Animal and Plant Health Inspection Service manual prescribing cold treatment, fumigation, and irradiation protocols for imported reefer cargoes such as Chilean grapes.
- APHIS-PPQ Form 203 X26. Reefer Containers and Cold Chain Logistics
- USDA Plant Protection and Quarantine notice of arrival and inspection record for treated commodities.
- Aphotic zone X10. Marine Biology, Fisheries and Oceanography
- Depth range where sunlight is too weak to support photosynthesis.
- Aphract X39. Pre-1900 Maritime History
- An ancient Greek warship lacking a full deck over the rowers, distinguished from the cataphract.
- API X54. Naval Architecture Software and IACS Rules
- American Petroleum Institute, standards body whose recommended practices (API RP 2A, 2SK, 2RD) cross over into offshore vessel design.
- API 17D X65. ROVs, AUVs, USVs and Marine Robotics
- API specification for subsea wellheads and trees that governs the design of ROV-operable features on the tree.
- API 17H X65. ROVs, AUVs, USVs and Marine Robotics
- American Petroleum Institute recommended practice that defines ROV and ROT interfaces for subsea production equipment.
- API base oil group X61. Marine Lubricants and Cylinder Oils
- American Petroleum Institute classification of base stocks into Groups I through V based on sulfur, saturates, and viscosity index.
- API CF Specification X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring
- American Petroleum Institute classification covering severe-duty diesel engine oils suitable for older indirect-injection medium-speed engines.
- API CI-4 Specification X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring
- American Petroleum Institute classification for heavy-duty diesel engine oils compatible with EGR-equipped four-stroke engines.
- API Gravity X1. Cargo Science, Commodities and Cargo Care
- American Petroleum Institute density scale; higher API = lighter crude.
- API Pump X63. Marine Auxiliary Machinery and Pumps
- Pump manufactured to API 610 standard, occasionally specified for offshore and FPSO duty.
- API RP 17 X14. Offshore Oil and Gas Marine Operations
- API series covering subsea production systems including trees, manifolds, risers.
- API RP 2A X14. Offshore Oil and Gas Marine Operations
- American Petroleum Institute recommended practice for fixed offshore platform design.
- API RP 2SK X14. Offshore Oil and Gas Marine Operations
- API recommended practice for design and analysis of stationkeeping for floating structures.
- API RP 2T X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels
- API recommended practice for planning, designing, and constructing tension leg platforms.
- APIS X109. Maritime Autonomous Surface Ships and MASS Code
- Autonomous Port Information System, the broad term for shore-side data exchanges that feed berth and traffic information to MASS systems.
- APL X6. Container, Intermodal and Trade Codes
- American President Lines, container carrier brand operated by CMA CGM.
- APL (American President Lines) Vessels X118. Ship Recycling Yards, Beaches and Regulation
- Container-line tonnage frequently delivered to Alang HKC plots and Aliaga in the late 2010s.
- APL Agency Network X86. Port Agency, Husbandry and Disbursement
- American President Lines now part of CMA CGM relying on the parent's owned agency offices.
- APL England X76. Stevedoring, Lashing and Cargo Securing
- Container vessel that lost containers off the Australian coast in May 2020, leading to debris washing ashore in New South Wales.
- APL Owner Code X83. ISO Container Manufacturing and Leasing
- Historic BIC prefix family used by American President Lines and successor CMA CGM container fleet.
- APL Vancouver fire (2019) X163. Marine Accident Investigation Agencies and Landmark Inquiries
- Container ship fire off Vietnam in January 2019 investigated by the Singapore flag administration with focus on misdeclared dangerous goods.
- APM Maersk Broker relationship X71. Shipbrokers and Brokerage Firms
- Maersk Broker is an independent partnership separate from A.P. Moller Maersk despite the shared origin.
- APM Singapore X119. Maritime Conferences, Trade Shows and Awards
- Asia Pacific Maritime exhibition, biennial since 1978, held at Marina Bay Sands and organized by Informa Markets.
- APM Terminals X44. Shipping Indices, FFAs and Freight Markets
- Container terminal operator within the A.P. Moller-Maersk group whose throughput data informs container index analysis.
- APM Terminals Industry Forum X119. Maritime Conferences, Trade Shows and Awards
- Customer and partner conference held annually by APM Terminals in The Hague.
- APM Terminals Maasvlakte II X94. Port Machinery and Quay Equipment Makers
- Fully automated container terminal in Rotterdam equipped with Kalmar automated stacking cranes and battery-electric AGVs.
- APMM X130. National Coast Guards and Cutter Fleets
- Agensi Penguatkuasaan Maritim Malaysia, the Malaysian Maritime Enforcement Agency, established 2005, headquartered Putrajaya.
- APMT Pier 400 X138. Global Container Terminal Operators and Port Equipment
- APM Terminals' Los Angeles facility, the largest proprietary container terminal in North America with 484 acres on Terminal Island.
- Apogee X16. Nautical Science, Navigation and COLREGs
- Point in the Moon's orbit farthest from Earth.
- Apogee Tide D2. Hydrography, tides, waves, bathymetry and marine geology
- Tide occurring when the Moon is at its farthest point from Earth.
- Apollo X42. Offshore Wind Installation and Cable Lay
- Heavy lift jack-up vessel operated by Maersk Supply Service, contracted on US East Coast offshore wind work including Empire Wind.
- Apollo (DEME) X105. Offshore Wind Farm Installation and Vessels
- Jack-up installation vessel operated by DEME Offshore equipped with an 800-tonne main crane for turbine and foundation work.
- Apollo Goessling X63. Marine Auxiliary Machinery and Pumps
- German manufacturer of gear pumps used on marine fuel oil and lube oil services.
- Apollo Ship Breaking Yard X147. Ship Recycling, Hong Kong Convention, and Recycling Yards
- A historically significant plot operator at Alang involved in cape and tanker dismantling.
- Apollo Submarine Cable System X122. Submarine Cable Laying, Repair Vessels and Operators
- 13,000 km trans-Atlantic cable owned by Vodafone since 2012, originally built by Alcatel in 2003 with landings at Bude, Lannion, Manasquan and Shirley.
- Apollo Syndicate Management X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets
- Lloyd's syndicate underwriting hull and cargo, Syndicate 1969.
- Apollo Underwriting X117. Marine Insurance Markets, Captives and Reinsurance
- Lloyd's Syndicate 1969 (Apollo), a specialty writer including marine cargo and hull.
- Aponte Family X164. Cruise Industry, Brands, Ship Classes, and Terminals
- The Italian Swiss family that owns and controls MSC Group, including MSC Cruises and Explora Journeys, through Gianluigi Aponte and his children.
- Apostille X7. Flag State, Port State Control and Detention Vocabulary
- Hague Convention certification attached to flag-state documents for cross-border legal recognition.
- Apostleship of the Sea F3. Seafaring Life, Education, Professions and Institutions
- Catholic seafarers' welfare organization, now Stella Maris.
- APP X114. Maritime Arbitration and Shipping Law Firms
- Asia Pacific Productivity, a maritime arbitration administrator concept used in some Asian forums.
- Apparent bias X152. Maritime Arbitration and Dispute Resolution
- Test under English law (Porter v Magill) asking whether a fair-minded and informed observer would conclude there was a real possibility of arbitrator bias.
- Apparent cause X12. Maritime Casualties and Investigation
- Surface-level reason for a casualty before deeper root cause analysis.
- Apparent Density X115. Marine Bunker and Cargo Surveying
- Density value read directly from a hydrometer at observed temperature before correction to the reference temperature of 15 degrees C.
- Apparent Good Order X5. Marine Surveying and Inspection
- Statement on a clean bill of lading indicating no visible external damage on shipment.
- Apparent Good Order and Condition X51. Maritime Arbitration, Law and BIMCO Clauses
- The bill of lading representation by the master regarding the external condition of cargo at shipment, binding the carrier in the hands of a transferee.
- Apparent Mass X115. Marine Bunker and Cargo Surveying
- Mass value calculated from observed volume and apparent density, requiring temperature correction before being recorded on the bunker quantity statement.
- Apparent motion X16. Nautical Science, Navigation and COLREGs
- Motion of one vessel as seen from another moving vessel.