Glossary

Maritime glossary, terms beginning with A (page 6)

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

Showing 250 of 3739 terms (page 6 of 15).

Air lubrication interaction X38. Propellers, Stern Gear and Shaft Lines: Effect of hull air-lubrication bubbles passing through the propeller disc, altering inflow density and cavitation behavior.
Air Lubrication System X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Technology that injects compressed air beneath a hull to reduce frictional resistance, typically delivering 5 to 10 percent fuel savings.
Air Lubrication System (ALS) D6. Decarbonization, emissions and alternative fuels: System reducing hull friction via injected air bubbles.
Air Lubrication System Retrofit X113. Drydock and Ship Repair Yards: Drydock conversion fitting compressors, manifolds, and hull outlets to inject microbubbles under the flat bottom for frictional resistance reduction.
Air Pipe X5. Marine Surveying and Inspection: Vent pipe from tanks; subject to head and closure inspection.
Air Pipe Test X155. Marine Surveying Practice and Cargo Inspection: A leak detection method that pressurizes a tank through its air pipe and observes for bubbles or pressure drop, used in conjunction with hatch and tank tightness checks.
Air Pocket X115. Marine Bunker and Cargo Surveying: Trapped gas volume in a bunker tank that distorts sounding and ullage readings, addressed by venting or applying corrective adjustments.
Air Pollution A3. Marine environmental legislation: MARPOL and its annexes: Subject of MARPOL Annex VI.
Air Pollution Annex X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The colloquial reference to MARPOL Annex VI, which entered into force on 19 May 2005 and was comprehensively revised with entry into force on 1 July 2010.
Air Pollution Deficiency X66. Port State Control and Regional MOUs: 14000 series deficiency under MARPOL Annex VI.
Air Pollution Prevention Certificate X69. EGCS Scrubbers, SCR and Marine Air Emissions: Common reference to the IAPP issued under MARPOL Annex VI for each ship of 400 GT and above.
Air Products NEOM Helios X140. Ammonia as Marine Fuel and Hydrogen Shipping: Joint venture with ACWA Power and NEOM holding a 50 percent stake in the USD 5 billion green ammonia plant at Oxagon.
Air Products Saudi Arabia X140. Ammonia as Marine Fuel and Hydrogen Shipping: Exclusive offtaker for NEOM green ammonia production, planning a global hydrogen distribution network with cracking terminals.
Air Range X82. Saturation Diving and Offshore Diving Operations: Depth band, 0 to 50 m, where breathing air remains within acceptable narcosis limits.
Air receiver B2. Marine Engineering: Pressurized vessel storing starting air at typically 30 bar.
Air Receiver Decommissioning X50. Ship Recycling, Demolition and Hong Kong Convention: The depressurization, venting, and certification of starting air receivers and service air receivers before cutting under the Ship Recycling Plan.
Air release X47. Marine Fuel Quality and ISO 8217: Time taken for entrained air to escape from a fuel under controlled conditions, governed by ISO 9120 for hydraulic fluids and adapted informally for marine distillates.
Air Ride Suspension X104. Project Cargo Forwarders and Heavy Transport: Trailer suspension that cushions sensitive project cargo such as transformers and turbines.
Air run X19. Engine Room Watchkeeping and UMS Operations: Turning the main engine on starting air with indicator cocks open, performed before standby.
Air Salvage X99. Marine Salvage Awards and SCOPIC: Use of aircraft, helicopters, and aerial logistics to deliver salvage personnel and equipment to a casualty.
Air Sampling X28. Ship Recycling and End-of-Life: Workplace monitoring for airborne asbestos fibers and welding fumes during dismantling.
Air splint X36. Shipboard Medical, Telemedicine and Seafarer Health: Inflatable limb-immobilization device listed in IMGS Annex V.
Air spray X45. Marine Paints, Coatings and Antifouling: Conventional atomization using compressed air, used mainly for finish coats requiring high decorative quality.
Air Test X5. Marine Surveying and Inspection: Pneumatic leak test of tank boundaries at low pressure to verify tightness.
Air Tugger X79. Tugs and Towage Industry: Pneumatic deck winch used on tugs and barges to handle messenger lines and stoppers.
Air Vent X83. ISO Container Manufacturing and Leasing: Small ventilator fitted to dry containers to equalize internal and external pressure during transit.
Air waybill C3. Logistics, freight forwarding and multimodal trade: AWB, transport document for air freight.
Air Wing X11. Naval Vessels, Warship Systems and Naval Architecture: Embarked aviation unit on a US carrier, designated CVW.
Air-cooled condenser X26. Reefer Containers and Cold Chain Logistics: Heat exchanger rejecting refrigerant heat to ambient air via condenser fan, standard on container reefer units.
Air-Sea Flux D1. Physical and chemical oceanography and marine meteorology: Exchange of heat, moisture, momentum, or gases across the ocean-atmosphere interface.
Air-Side X31. Helicopter Operations on Ships: The side of helideck operations involving the aircraft, refueling, and ground handling.
Airborne Bathymetric LIDAR X73. Marine Hydrography, Charting and ENC: A laser-based remote sensing method for shallow-water depth measurement, used by IHO members in clear coastal waters.
Airborne Lidar D5. Coastal processes, sea-level, cryosphere and ocean observation science: Laser scanning from aircraft used in coastal topography.
Airbus Beluga ST X104. Project Cargo Forwarders and Heavy Transport: Outsize freighter operated by Airbus Transport International, occasionally chartered for project parts.
Airbus EC225 X31. Helicopter Operations on Ships: Heavy twin Super Puma variant, 11.0 t MTOW, formerly common offshore, withdrawn after 2016 Turoy accident, partial return from 2018.
Airbus H160 X31. Helicopter Operations on Ships: Medium twin helicopter, 6.0 t MTOW, Fenestron tail rotor, offshore variant H160 OO.
Airbus H175 X31. Helicopter Operations on Ships: Super-medium twin, 7.8 t MTOW, 16 to 18 passenger offshore configuration, range about 300 nm.
Airbus H225 X31. Helicopter Operations on Ships: Renamed EC225 Super Puma after Airbus Helicopters rebrand 2014.
Aircraft and Ship Finance Comparison X49. Ship Finance, Leasing and Maritime Capital Markets: Practice of contrasting JOL/JOLCO ship leases with their longer established aircraft equivalents.
Aircraft carrier (CV/CVN) B5. Ship Types and Individual Vessels: Naval aviation vessel.
Aircraft Engines, Project Cargo X1. Cargo Science, Commodities and Cargo Care: High-value out-of-gauge units typically carried under cradle with custom lashing.
Aircraft hangar X125. Superyacht Industry, Builders and Brokers: Garage compartment fitted on yachts such as Eclipse and Serene to house an Airbus or Sikorsky helicopter.
Aircraft Reply (CPA-related) X16. Nautical Science, Navigation and COLREGs: Term used loosely; see CPA.
Aircraft-laid mine X77. Naval Mine Warfare and Mine Countermeasures: A sea mine deployed from a fixed-wing aircraft or helicopter, typically a bottom-influence mine fitted with a parachute retarder.
Airless spray X45. Marine Paints, Coatings and Antifouling: Application method using hydraulic pressure to atomize paint through a small orifice tip, standard for heavy-duty marine coatings.
Airseas Seawing X34. Decarbonization, Alternative Fuels and Carbon Pricing: Automated parafoil kite wind-assist system developed by Airseas (Airbus spinoff).
AIRSS X133. Polar Research Vessels and Polar Code Regimes: Arctic Ice Regime Shipping System, Transport Canada's risk methodology for ice navigation in Canadian Arctic waters.
AIS X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Automatic Identification System, a VHF data broadcast system mandated by SOLAS V/19.2.4.
AIS (Automatic Identification System) B3. Nautical Science: Class A/B transponder per ITU-R M.1371.
AIS (Automatic Identification System) Exclusion X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Use of AIS data in marine spatial planning to identify shipping density and define cable and pipeline corridors with reduced conflict.
AIS aid to navigation C4. Ports, terminals and coastal/marine civil engineering: Virtual or physical AIS AtoN.
AIS AtoN X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Aid to Navigation broadcast using AIS Message 21; can be real, synthetic or virtual.
AIS Base Station X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Shore-based AIS station that manages slot assignments and transmits Message 4.
AIS Binary Message X74. AIS Data, Vessel Tracking and Maritime Intelligence: Application-specific Type 6 (addressed) or Type 8 (broadcast) AIS payload used to carry custom data.
AIS Channel 87B X74. AIS Data, Vessel Tracking and Maritime Intelligence: 161.975 MHz VHF marine channel allocated as AIS 1.
AIS Channel 88B X74. AIS Data, Vessel Tracking and Maritime Intelligence: 162.025 MHz VHF marine channel allocated as AIS 2.
AIS Class A E1. Maritime security, geopolitics and risk: Mandatory transponder for SOLAS vessels broadcasting MMSI, position, course, speed.
AIS Class A (Fishing Vessel Requirement) X87. Fishing Vessels and Fisheries Management: Carriage obligation under EU Regulation 1224/2009 for EU fishing vessels of 15 meters length overall and above.
AIS Class A Inland X33. Inland Navigation and Barge Operations: Inland AIS station compatible with SOLAS Class A, mandatory on most CCNR and EU inland vessels.
AIS Class B E1. Maritime security, geopolitics and risk: Lower-power transponder used by smaller, non-SOLAS craft.
AIS Class B+/SO X74. AIS Data, Vessel Tracking and Maritime Intelligence: 5 W SOTDMA Class B variant offering Class A-like reporting rates on shared time slots.
AIS Dark Activity E1. Maritime security, geopolitics and risk: Deliberate switching off of AIS, common in sanctions evasion.
AIS data X12. Maritime Casualties and Investigation: Automatic Identification System tracks used to reconstruct vessel movements during a casualty investigation.
AIS Data Cross-Reference X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The practice of comparing a vessel's reported port calls in Q88 and SIRE submissions against AIS tracks to detect inconsistencies.
AIS Dispatcher X74. AIS Data, Vessel Tracking and Maritime Intelligence: Open source utility from MarineTraffic that forwards local AIS data to multiple internet endpoints.
AIS Dropout X74. AIS Data, Vessel Tracking and Maritime Intelligence: A gap in AIS reception during which a vessel ceases transmitting on the terrestrial or satellite network.
AIS familiarization X21. STCW Certificates, Crewing and Seafarer Welfare: Operator training in the Automatic Identification System, often combined with ECDIS and bridge equipment courses.
AIS Gap X22. Piracy, Maritime Security and Armed Protection: Period when a vessel's Automatic Identification System transmission stops, often indicating sanctions evasion or illicit ship-to-ship transfer.
AIS Gap Analysis X74. AIS Data, Vessel Tracking and Maritime Intelligence: Forensic technique that flags missing AIS positions to infer possible dark activity or sanctions evasion.
AIS Hub X74. AIS Data, Vessel Tracking and Maritime Intelligence: Free community-run AIS data exchange operated by MarineTraffic for contributors of raw NMEA feeds.
AIS Inland X33. Inland Navigation and Barge Operations: Inland-specific Automatic Identification System based on ITU-R M.1371 with extended message set for inland navigation.
AIS Jamming X48. Maritime Cybersecurity: Intentional radio interference that prevents Automatic Identification System transmissions from being received within a coverage area.
AIS Loss X141. Marine Salvage Industry and Wreck Removal Contractors: Sudden disappearance of a vessel from Automatic Identification System tracking, often the first salvage trigger.
AIS Manipulation X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: Falsification of AIS-broadcast data fields such as MMSI, IMO number, name, destination, or position, often by feeding spoofed NMEA strings to the transponder.
AIS Message 1 X168. Bridge Electronics: Radar, ECDIS, GMDSS, and IBS: Position report Class A used by SOLAS vessels for dynamic data transmission.
AIS Message 1/2/3 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Class A scheduled, assigned and response position reports.
AIS Message 12 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Addressed safety-related message.
AIS Message 14 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Safety-related broadcast message.
AIS Message 15 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Interrogation request to another AIS station.
AIS Message 17 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: DGNSS broadcast binary message.
AIS Message 18 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Class B standard position report.
AIS Message 19 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Class B extended position report including static data.
AIS Message 20 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Data link management message used by base stations to reserve slots.
AIS Message 21 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Aid-to-Navigation report.
AIS Message 22 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Channel management message for regional AIS configuration.
AIS Message 23 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Group assignment command to a set of stations.
AIS Message 24 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Class B static data report (Parts A and B).
AIS Message 27 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Long-range position report for satellite AIS reception.
AIS Message 4 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Base station report containing UTC, date and position.
AIS Message 5 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Class A static and voyage-related data including IMO number, call sign, name, type, dimensions, draft, destination and ETA.
AIS Message 6 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Addressed binary message between two stations.
AIS Message 7 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Binary acknowledgement.
AIS Message 8 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Binary broadcast message used for meteorological, hydrological and other application-specific data.
AIS Message 9 X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Position report for SAR aircraft.
AIS Message Type 1 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Class A scheduled position report.
AIS Message Type 12 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Addressed safety-related message.
AIS Message Type 14 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Safety-related broadcast and the message type used by AIS SART devices.
AIS Message Type 18 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Class B standard position report.
AIS Message Type 19 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Class B extended position report with static data.
AIS Message Type 2 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Class A assigned-schedule position report.
AIS Message Type 20 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Data link management message used by base stations to reserve slots.
AIS Message Type 21 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Aid to Navigation report.
AIS Message Type 24 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Class B static data report, parts A and B.
AIS Message Type 27 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Long-range position report optimized for satellite reception.
AIS Message Type 3 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Class A response to interrogation position report.
AIS Message Type 4 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Base station report carrying UTC and position.
AIS Message Type 5 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Static and voyage-related data from a Class A ship.
AIS Message Type 9 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Position report for SAR aircraft.
AIS Pilot Plug X89. ECDIS and Bridge Equipment Makers: Standardized AMP connector on the AIS unit providing IEC 61162 NMEA data to a marine pilot's portable navigation aid.
AIS Receiver X74. AIS Data, Vessel Tracking and Maritime Intelligence: Shore or shipboard device that decodes the 9600 bps GMSK signal on AIS 1 and AIS 2.
AIS Replay X13. Marine Salvage and Wreck Removal: Reconstruction of casualty track from Automatic Identification System data for investigation.
AIS Slot X74. AIS Data, Vessel Tracking and Maritime Intelligence: One of 2,250 SOTDMA slots per minute per channel used to schedule transmissions.
AIS Spoofing E1. Maritime security, geopolitics and risk: Falsifying AIS data (MMSI, position, identity) to disguise vessel movements.
AIS Track Reconstruction X60. Marine Salvage and Wreck Removal: Use of Automatic Identification System data to reconstruct a casualty's movements before grounding or collision.
AIS Transponder X74. AIS Data, Vessel Tracking and Maritime Intelligence: Combined AIS transmitter and receiver installed onboard a vessel.
AIS Type 14 X80. Maritime Search and Rescue Coordination: Safety related broadcast message used for SAR coordination over AIS.
AIS Type Code X98. Ship Registries and Flag States: Numeric code transmitted by AIS identifying vessel category per ITU-R M.1371.
AIS Vessel Tracking X115. Marine Bunker and Cargo Surveying: Use of Automatic Identification System data by survey planners to position surveyors at correct berths and STS rendezvous points.
AIS-SART E3. Technology, digitalization and smart shipping: AIS Search and Rescue Transmitter for survival craft.
AISA X25. Maritime Cybersecurity, OT and IT: Australian Information Security Association, professional cyber body in Australia.
AISHub X74. AIS Data, Vessel Tracking and Maritime Intelligence: Community AIS data sharing network feeding the MarineTraffic ecosystem.
AISSat-1 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Norwegian Space Centre nanosatellite launched in 2010 to demonstrate space-based AIS reception.
AISSat-2 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Follow-on Norwegian AIS nanosatellite launched in 2014.
AISSat-3 X74. AIS Data, Vessel Tracking and Maritime Intelligence: Norwegian satellite AIS mission lost in a 2017 launch failure.
Aitchison Raffety Marine X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: UK marine surveying practice handling hull and cargo casualty inspections.
Aitken Spence Shipping X118. Ship Recycling Yards, Beaches and Regulation: Sri Lankan agent occasionally handling last-voyage formalities for vessels transiting Colombo en route to Alang or Chittagong.
AIWW (Atlantic Intracoastal Waterway) X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: The roughly 1,100 mile sheltered route from Norfolk, Virginia to Key West, Florida, used by tugs, barges, fishing vessels, and recreational craft.
Ajaccio X85. Ferries, Ro-Pax Operators and Routes: Capital of Corsica served by Corsica Ferries from Toulon and by La Meridionale and Corsica Linea from Marseille.
AK-630 X11. Naval Vessels, Warship Systems and Naval Architecture: Soviet/Russian 30 mm six-barrel rotary CIWS gun mount.
Akademia Morska Gdynia X121. Maritime Education, Academies and Universities: Former name of the Gdynia Maritime University in Poland, founded 1920, renamed Uniwersytet Morski w Gdyni in 2018.
Akademia Morska Szczecin X121. Maritime Education, Academies and Universities: Maritime University of Szczecin in Poland, founded 1947, offering Navigation, Marine Engineering and Transport Engineering faculties.
Akademik Fedorov X133. Polar Research Vessels and Polar Code Regimes: AARI Arc7 expedition flagship built 1987, supports Vostok and Mirny resupply, gross tonnage about 16,200.
Akademik Ioffe X97. Polar Expedition Cruise and IAATO Operations: Russian Academy of Sciences research vessel chartered through the 2010s for polar expedition cruises before withdrawal from the charter market in 2019.
Akademik Keldysh X133. Polar Research Vessels and Polar Code Regimes: RV Akademik Mstislav Keldysh, Shirshov Institute research vessel mother ship of Mir-1 and Mir-2 submersibles.
Akademik Lomonosov X133. Polar Research Vessels and Polar Code Regimes: World's first operational floating nuclear power plant, two KLT-40S reactors, commissioned at Pevek, Chukotka 2020.
Akademik Sergey Vavilov X97. Polar Expedition Cruise and IAATO Operations: Sister ship to Akademik Ioffe, a Russian research vessel chartered by One Ocean Expeditions and others for polar tourism.
Akademik Shokalskiy X97. Polar Expedition Cruise and IAATO Operations: Russian ice-strengthened research vessel that became beset in Antarctic ice in December 2013, prompting an international rescue operation.
Akademik Tryoshnikov X133. Polar Research Vessels and Polar Code Regimes: AARI Arc7 polar research vessel delivered 2012 by Admiralty Shipyards, 13,830 GT.
AKE X11. Naval Vessels, Warship Systems and Naval Architecture: Dry cargo and ammunition ship, USN Lewis and Clark class T-AKE.
Aker ARC 100 X27. Polar Code, Ice Navigation and Polar Operations: Aker Arctic conceptual icebreaking shuttle tanker design used for Arctic oil export trades.
Aker ARC 121 X27. Polar Code, Ice Navigation and Polar Operations: Design basis for the Norilsk Nickel ice-class container ships such as Norilskiy Nickel.
Aker ARC 130A X27. Polar Code, Ice Navigation and Polar Operations: Design used for the Yamal LNG Arc7 ice-class LNG carriers (Christophe de Margerie class).
Aker ARC design series X27. Polar Code, Ice Navigation and Polar Operations: Family of double-acting icebreaking ship designs by Aker Arctic Technology, Finland.
Aker ARC100 X52. Polar Code, Arctic and Antarctic Shipping: Aker Arctic design family of medium icebreakers used as a baseline for several Baltic and Arctic newbuilds.
Aker ARC121 X52. Polar Code, Arctic and Antarctic Shipping: Double-acting Arc7 LNG carrier design used for the Yamal LNG Christophe de Margerie series.
Aker ARC130A X52. Polar Code, Arctic and Antarctic Shipping: Aker Arctic icebreaking emergency and rescue vessel design developed for Sakhalin and Kara Sea operations.
Aker Arctic X52. Polar Code, Arctic and Antarctic Shipping: Finnish naval architecture firm in Helsinki specializing in icebreakers and ice-class merchant ships, originator of the ARC and double-acting tanker concepts.
Aker Barents X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Aker H-6e sister rig to Aker Spitsbergen used in Norwegian and Barents Sea drilling campaigns.
Aker BioMarine X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Norwegian krill harvesting and ingredients company headquartered in Oslo, operating the MSC-certified Antarctic krill fleet including the FV Antarctic Sea and FV Saga Sea.
Aker BP X57. Ocean Energy Beyond Wind: Norwegian exploration and production company that is a partner in several offshore CCS license areas on the Norwegian Continental Shelf.
Aker Carbon Capture X57. Ocean Energy Beyond Wind: Norwegian carbon capture technology provider that supplies amine-based capture units feeding offshore CO2 storage projects.
Aker H-3 X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Norwegian-designed second-generation semisubmersible drilling rig hull from Aker Group widely built in the 1970s.
Aker H-4.2 X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Twin-pontoon column-stabilized semisubmersible design used for harsh environment drilling in the North Sea.
Aker H-6e X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Sixth-generation harsh-environment semisubmersible design with dual derrick and DP3 station keeping.
Aker Solutions X57. Ocean Energy Beyond Wind: Norwegian engineering contractor that delivers subsea injection systems and topsides for offshore CCS hubs including Northern Lights.
Aker Spitsbergen X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Aker H-6e harsh-environment semisubmersible delivered in 2009 and operated by Transocean.
Aker Yards X58. Shipbuilding Yards and Construction: Former Norwegian shipbuilding group whose cruise and offshore assets were absorbed into STX Europe and later Meyer Turku, Chantiers de l'Atlantique, and Vard.
Akers Mekaniske Verksted X39. Pre-1900 Maritime History: Norwegian shipyard founded in Christiania in 1841, building early Scandinavian steamships.
Akij Group X118. Ship Recycling Yards, Beaches and Regulation: Bangladeshi conglomerate with steel re-rolling subsidiary Akij Steel, a domestic consumer of plate scrap from Sitakunda yards.
Akima spline B1. Naval Architecture: Smooth interpolation used for fairing hull offsets.
Akitsushima-class X130. National Coast Guards and Cutter Fleets: Japan Coast Guard large patrol vessel, lead ship PLH-32 Akitsushima commissioned 2013, displaces 6,500 tons with helicopter hangar.
Akizuki class X11. Naval Vessels, Warship Systems and Naval Architecture: Japanese JMSDF general-purpose destroyer with FCS-3A AESA, lead ship DD-115.
Akizuki-class destroyer X106. Naval Surface Combatants: JMSDF general-purpose destroyer class of four ships commissioned 2012 to 2014, displacing about 6,800 tons full load.
Akkadian Sea Trade F1. Maritime History: Bronze Age commerce between Mesopotamia, Dilmun, Magan, and Meluhha documented in cuneiform tablets.
AKMI Maritime Training X160. Maritime Academies, Universities, and STCW Certification: Greek private vocational training institute offering STCW basic and advanced courses across Athens and provincial centers.
Akogare X128. Sail Training Ships and Tall Ship Associations: Japanese sail training brigantine built 1993, 53 m length, owned by Osaka City Sports Association, occasional participant in STI Asian and Pacific tall ships events.
Akula class X11. Naval Vessels, Warship Systems and Naval Architecture: Soviet Project 971 SSN nuclear attack submarine.
Akzo Nobel Intersleek X38. Propellers, Stern Gear and Shaft Lines: Foul release coating frequently specified on propeller blades to reduce roughness-related efficiency loss.
AkzoNobel X45. Marine Paints, Coatings and Antifouling: Dutch multinational coatings group, parent of the International marine coatings brand based in Gateshead, United Kingdom.
AkzoNobel International Paint X50. Ship Recycling, Demolition and Hong Kong Convention: A coatings manufacturer whose Material Declarations and Suppliers Declarations of Conformity feed the IHM Part I database for marine paints.
Al Aamriya X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 217,000 m3 delivered 2009 by Samsung Heavy Industries for Nakilat, Marshall Islands flag.
Al Bahia X118. Ship Recycling Yards, Beaches and Regulation: Cash-buyer asset name used historically by GMS for vessels under interim flag during the delivery voyage.
Al Bidda X134. LNG and LPG Carrier Operators and Containment Systems: Conventional LNG carrier of 145,000 m3 delivered 1999 by Mitsubishi Heavy Industries for Nakilat, Moss containment.
Al Daayen X134. LNG and LPG Carrier Operators and Containment Systems: Q-Max LNG carrier of 263,000 m3 delivered 2009 by Daewoo Shipbuilding, hull 2266, Marshall Islands flag.
Al Dafna X134. LNG and LPG Carrier Operators and Containment Systems: Q-Max LNG carrier of 263,000 m3 delivered 2009 by Samsung Heavy Industries for Nakilat, GTT NO96 membrane.
Al Gattara X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 216,000 m3 delivered 2007 by Hyundai Heavy Industries, first vessel of Q-Flex class.
Al Ghariya X134. LNG and LPG Carrier Operators and Containment Systems: Conventional LNG carrier of 145,000 m3 delivered 1996 with Moss spherical tanks for Nakilat.
Al Hamla X134. LNG and LPG Carrier Operators and Containment Systems: Conventional LNG carrier of 145,700 m3 delivered 1997 by Mitsubishi for Nakilat, Bahamas flag.
Al Huwaila X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 217,000 m3 delivered 2008 by Samsung Heavy Industries for Nakilat.
Al Jasra X134. LNG and LPG Carrier Operators and Containment Systems: Conventional LNG carrier of 145,000 m3 with Moss tanks operated by Nakilat under long term charter to Qatargas.
Al Karaana X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 216,000 m3 delivered 2008 by Samsung Heavy Industries, Marshall Islands flag.
Al Kharsaah X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 216,200 m3 delivered 2008 by Samsung Heavy Industries for Nakilat.
Al Khattiya X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 216,000 m3 delivered 2009 by Samsung Heavy Industries for Nakilat.
Al Khor X134. LNG and LPG Carrier Operators and Containment Systems: Conventional LNG carrier of 137,500 m3 delivered 1996 by Mitsubishi Heavy Industries, Moss containment.
Al Mafyar X134. LNG and LPG Carrier Operators and Containment Systems: Q-Max LNG carrier of 266,000 m3 delivered 2009 by Samsung Heavy Industries for Nakilat.
Al Marrouna X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 151,700 m3 delivered 2006 by Hyundai Heavy Industries, first Q-Flex in series.
Al Mayeda X134. LNG and LPG Carrier Operators and Containment Systems: Q-Max LNG carrier of 266,000 m3 delivered 2009 by Samsung Heavy Industries, charter to Qatargas.
Al Nuaman X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 217,000 m3 delivered 2010 by Samsung Heavy Industries for Nakilat.
Al Oraiq X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 217,000 m3 delivered 2009 by Samsung Heavy Industries for Nakilat.
Al Rayyan X134. LNG and LPG Carrier Operators and Containment Systems: Conventional LNG carrier of 137,000 m3 delivered 1997 by Mitsubishi Heavy Industries with Moss tanks.
Al Ruwais X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 216,000 m3 delivered 2008 by Samsung Heavy Industries for Nakilat.
Al Sadd X134. LNG and LPG Carrier Operators and Containment Systems: Q-Max LNG carrier of 266,000 m3 delivered 2010 by Samsung Heavy Industries for Nakilat.
Al Safliya X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 217,000 m3 delivered 2008 by Samsung Heavy Industries for Nakilat.
Al Sahla X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 217,000 m3 delivered 2008 by Daewoo Shipbuilding for Nakilat.
Al Samriya X134. LNG and LPG Carrier Operators and Containment Systems: Q-Max LNG carrier of 266,000 m3 delivered 2010 by Daewoo Shipbuilding, hull 2275.
Al Shamal X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 217,000 m3 delivered 2009 by Daewoo Shipbuilding for Nakilat.
Al Sheehaniya X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 216,000 m3 delivered 2008 by Samsung Heavy Industries for Nakilat.
Al Thakhira X134. LNG and LPG Carrier Operators and Containment Systems: Conventional LNG carrier of 137,000 m3 delivered 1994 by Mitsubishi Heavy Industries with Moss containment.
Al Utouriya X134. LNG and LPG Carrier Operators and Containment Systems: Q-Flex LNG carrier of 210,100 m3 delivered 2009 by Samsung Heavy Industries for Nakilat.
Al Wajbah X134. LNG and LPG Carrier Operators and Containment Systems: Conventional LNG carrier of 135,500 m3 delivered 1997 by Kvaerner Masa Yards, Moss containment.
Al Wakrah X134. LNG and LPG Carrier Operators and Containment Systems: Conventional LNG carrier of 137,000 m3 delivered 1997 by Mitsubishi Heavy Industries with Moss tanks.
Al Zubarah X134. LNG and LPG Carrier Operators and Containment Systems: Conventional LNG carrier of 137,500 m3 delivered 1996 by Mitsubishi Heavy Industries, Bahamas flag.
Al-Shabaab Maritime Threat E1. Maritime security, geopolitics and risk: Somali-linked extremist exposure in the western Indian Ocean.
Al-Zn-In Alloy X100. Marine Cathodic Protection and Anodes: The standard sacrificial-anode alloy chemistry defined in DNV-RP-B401 for seawater service.
ALADIN X77. Naval Mine Warfare and Mine Countermeasures: An Atlas Elektronik mine identification and disposal vehicle developed for German Navy minehunters.
Aladin Gauge X82. Saturation Diving and Offshore Diving Operations: Brand of decompression computer occasionally referenced in commercial work.
Alameda X130. National Coast Guards and Cutter Fleets: Pacific Area headquarters of the United States Coast Guard on Coast Guard Island, California, home to Bertholf, Stratton, Munro, Kimball and Midgett.
Aland Islands X85. Ferries, Ro-Pax Operators and Routes: Autonomous Finnish archipelago whose flag of convenience and tax status underpin Viking Line and Tallink Silja Baltic cruise-ferry operations through Mariehamn.
Alang X118. Ship Recycling Yards, Beaches and Regulation: Village in Bhavnagar district, Gujarat, India, at the southern end of the Gulf of Khambhat, home to the world's largest ship recycling cluster spanning approximately 10 km of intertidal beach.
Alang Anchorage X118. Ship Recycling Yards, Beaches and Regulation: Outer anchorage off Alang at roughly 21 deg 24'N, 72 deg 11'E, where end-of-life ships await high-tide beaching slots.
Alang Beach Tide Window X118. Ship Recycling Yards, Beaches and Regulation: Spring-tide beaching windows of approximately 14 days per lunar cycle when tidal range exceeds 10 m, enabling vessels to ground at the highest plots.
Alang Plot 1 to 183 X118. Ship Recycling Yards, Beaches and Regulation: Numerical plot system administered by the Gujarat Maritime Board (GMB), with active plots concentrated between Plot 1 (north) and Plot 183 (south).
Alang Ship Recycling Yards Association (ASSRYA) X118. Ship Recycling Yards, Beaches and Regulation: Industry body representing Alang plot holders, headquartered at Alang and engaged with GMB on HKC compliance and worker welfare.
Alang-Sosiya X28. Ship Recycling and End-of-Life: Ship recycling cluster in Bhavnagar district, Gujarat, India, with approximately 150 plots and the world's largest dismantling capacity.
Alang-Sosiya Yard X118. Ship Recycling Yards, Beaches and Regulation: Combined cluster of Alang and adjacent Sosiya village plots forming the GMB-administered shipbreaking zone in Bhavnagar district.
Alarm acknowledge X19. Engine Room Watchkeeping and UMS Operations: Operator action silencing the audible signal while the visual indication remains until the cause is cleared.
Alarm and Monitoring System X25. Maritime Cybersecurity, OT and IT: Shipboard system that aggregates engine, cargo and auxiliary alarms, often integrated with the IAS.
Alarm code X26. Reefer Containers and Cold Chain Logistics: Numeric or alphanumeric fault indication displayed by reefer controller signaling component failure or out-of-range condition.
Alarm Flooding X48. Maritime Cybersecurity: Denial of service condition on an Integrated Alarm and Monitoring System in which excessive alarms mask a genuine cyber or safety event.
Alarm group X19. Engine Room Watchkeeping and UMS Operations: Logical grouping of alarms by system, used for ECR mimic and bridge repeater displays.
Alarm Limit X96. Hull Integrity Monitoring and Strain Gauges: Configured threshold in hull stress monitoring software that triggers a visual or audible warning when measured stress or acceleration exceeds set bounds.
Alarm Management X139. Maritime Cybersecurity, OT Threats and Standards: ICS discipline addressed in IEC 62682 and referenced by IEC 62443 to prevent alarm flooding that masks cyber events.
Alarm Matrix X82. Saturation Diving and Offshore Diving Operations: Annunciator panel in a saturation control room listing chamber faults.
Alarm printer X19. Engine Room Watchkeeping and UMS Operations: Hard copy printer logging every alarm event with date and time stamp, required under IACS UR M35.
Alarm Set Point X63. Marine Auxiliary Machinery and Pumps: Configured threshold at which an OWS 15 ppm OCM, salinity cell, or low-suction switch trips an audible alarm.
Alarms Deficiency X66. Port State Control and Regional MOUs: 08000 series deficiency category covering general, fire, and machinery alarms.
ALARP X20. LNG Operations and Custody Transfer: As Low As Reasonably Practicable risk principle applied to LNG carrier and terminal safety case demonstrations.
Alaska Clean Seas (ACS) X126. Marine Oil Spill Response and OPRC Regimes: Cooperative funded by North Slope operators headquartered at Prudhoe Bay, maintaining the largest cold-weather response stockpile in the world.
Alaska Coastal Survey X73. Marine Hydrography, Charting and ENC: A NOAA Office of Coast Survey programme covering Alaskan waters, where many areas remain Zone of Confidence U.
Alaska cruise season X64. Cruise Industry Operators, Brands and Ships: Late April through September itinerary cycle calling at Juneau, Skagway, Ketchikan, Sitka, and Glacier Bay.
Alaska Marine Highway System X85. Ferries, Ro-Pax Operators and Routes: State-operated US ferry network running between Bellingham, Washington and Southeast and Southwest Alaska ports.
Alaska Marine Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: One of three regional pilot associations licensed by the State of Alaska Board of Marine Pilots, covering Southwestern Alaska waters.
Alaska Maritime Agencies Training X160. Maritime Academies, Universities, and STCW Certification: Industry-led training programs serving the Alaska Marine Highway System and Bering Sea fishing fleet on STCW and USCG endorsements.
Alaska Pollock X10. Marine Biology, Fisheries and Oceanography: Gadoid groundfish *Gadus chalcogrammus*, supporting one of the world's largest single-species fisheries.
Alaska Pollock (Gadus chalcogrammus) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Whitefish species accounting for roughly 1.4 million tonnes of US landings per year from the Bering Sea, processed into surimi, fillet blocks and fish sticks.
Alaska Regional Response Team (ARRT) X126. Marine Oil Spill Response and OPRC Regimes: Federal-state body that pre-authorized in situ burning and limited dispersant use in Alaskan waters under the Unified Plan.
Alaska Seafood Marketing Institute (ASMI) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: State-funded generic marketing body for Alaska seafood, headquartered in Juneau and operating offices in Tokyo, Madrid and Shanghai.
Alaska-class container ship B5. Ship Types and Individual Vessels: Container ship adapted for Alaskan trade.
Alaskan King Crab X87. Fishing Vessels and Fisheries Management: Paralithodes camtschaticus, harvested by pot vessels under IFQ allocation following the 2005 Bering Sea crab rationalization.
Albacora X70. Reefer Containers and Cold Chain Shipping: Specialized reefer vessel operator historically active in the tuna and frozen fish trades from the Atlantic and Indian Oceans.
Albacore X10. Marine Biology, Fisheries and Oceanography: *Thunnus alalunga*, a temperate tuna prized for canning.
Albacore (Thunnus alalunga) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Temperate tuna species targeted by trolling and longline fleets in the North Pacific, South Pacific and North Atlantic, the primary canned "white meat" tuna in the United States.
Albacore Trolling Vessel X87. Fishing Vessels and Fisheries Management: Pacific Northwest vessel rigged with multiple trolling lines and bait jigs for surface albacore tuna.
Albanian Maritime Administration X98. Ship Registries and Flag States: Flag administration of Albania regulating vessels under Albanian flag.
Albatros X123. Offshore Wind Installation Vessels and Operators: Jan De Nul cable-lay vessel ordered 2022 from CMHI Haimen, 31,000 t cable carousel, delivered 2024 for German interconnector and offshore wind work.
Albatros Expeditions X97. Polar Expedition Cruise and IAATO Operations: Danish polar expedition operator running Antarctic and Arctic itineraries with chartered and owned vessels including Ocean Atlantic and Ocean Albatros.
Albatross X10. Marine Biology, Fisheries and Oceanography: Large pelagic seabird of the family Diomedeidae, mostly in the Southern Ocean and North Pacific.
Albatross Adjusters X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: Malta-based average adjusters serving Mediterranean and international markets.
Albert Canal X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: The 130 km Belgian waterway linking the Port of Antwerp with Liege on the Meuse, accommodating CEMT Class VIb traffic and a chain of large hydro-electric locks.
Albert Dock, Liverpool F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Historic 1846 dock complex housing the Merseyside Maritime Museum.