Glossary

Maritime glossary, terms beginning with A (page 2)

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

Showing 250 of 3739 terms (page 2 of 15).

Ablative coating X18. Ballast Water, Biofouling and Antifouling: Antifouling paint whose matrix erodes progressively through seawater hydrolysis to expose fresh biocide.
ABLE (Abnormal Load Engineers) X104. Project Cargo Forwarders and Heavy Transport: UK specialist consultancy for road oversize and abnormal load route engineering and escort planning.
Able Seafarer Deck X160. Maritime Academies, Universities, and STCW Certification: STCW A-II/5 certified rating with at least 18 months of qualifying deck sea service and demonstrated competence in all watchkeeping and maintenance tasks.
Able Seafarer Engine X102. Seafarer Welfare and Maritime Charities: STCW Regulation III/5 engine-room rating qualified to support watchkeeping under the chief engineer.
Able Seaman F3. Seafaring Life, Education, Professions and Institutions: STCW-rated deck rating qualified beyond ordinary seaman.
ABM X11. Naval Vessels, Warship Systems and Naval Architecture: Anti-ballistic missile defense role, executed at sea by Aegis BMD ships.
ABN AMRO X49. Ship Finance, Leasing and Maritime Capital Markets: Dutch bank historically active in shipping lending, which scaled back its global shipping portfolio in the 2020s.
ABNJ (Areas Beyond National Jurisdiction) D4. Fisheries, aquaculture, blue economy and marine resources: High seas and international seabed, focus of BBNJ.
Abnormal Catch Report X87. Fishing Vessels and Fisheries Management: Logbook entry required by several RFMOs when catch composition or volume deviates materially from declared target species.
Abnormal Indivisible Load (AIL) X104. Project Cargo Forwarders and Heavy Transport: UK regulatory term for a road load that cannot be divided and exceeds standard construction and use limits.
Abnormal load X15. Ports, Terminals and Stevedoring: cargo exceeding standard dimensions or weight that requires special handling and permits.
Abnormal Load Notification X104. Project Cargo Forwarders and Heavy Transport: Statutory advance notice filed with police, bridge owners, and highway authorities before moving an oversize unit.
Abnormal refraction X16. Nautical Science, Navigation and COLREGs: Atmospheric condition causing celestial or terrestrial objects to appear displaced from their true position.
Abnormal Wave X9. Cargo Securing, Lashing and Stability Vocabulary: Wave height significantly exceeding the significant wave height, considered in CSS Annex 13 acceleration tables.
Aboa X133. Polar Research Vessels and Polar Code Regimes: Finnish Antarctic summer-only station in Queen Maud Land, shares logistics with the Swedish Wasa station.
Aboa Mare X55. Marine Simulators, Training and Maritime Academies: Maritime academy and simulator training center in Turku, Finland, operating full mission bridge and engine room simulators for Nordic deck and engine officers.
Aboa Mare Simulator Centre X144. Bridge Simulators, Engine Room Simulators, and Maritime Training Equipment: Aboa Mare in Turku, Finland, operates Wartsila NTPro 5000 bridge and Transas ERS 5000 engine room simulators.
Aboard X3. Ship Handling, Seamanship and Deck Vocabulary: On or onto the vessel.
About X3. Ship Handling, Seamanship and Deck Vocabulary: Used in tacking; the order to bring a sailing vessel through the wind.
Above deck X3. Ship Handling, Seamanship and Deck Vocabulary: On the weather deck, exposed to the open air.
Above Deck Sampling Point X115. Marine Bunker and Cargo Surveying: Designated drip-sample tap located above main deck on the bunker manifold line, used by surveyors to draw MARPOL representative samples during the entire delivery.
Above Deck Stowage X104. Project Cargo Forwarders and Heavy Transport: Placement of project cargo on the weather deck of a heavy lift vessel for oversize or hazardous units.
Above Water Rock X73. Marine Hydrography, Charting and ENC: An ENC object (OBSTRN/UWTROC subtype) representing rock features permanently above chart datum.
Above-Deck Processing X87. Fishing Vessels and Fisheries Management: Fish handling performed on the working deck of a vessel that lacks a fully enclosed factory space.
Above-Deck Stow X169. Container Terminal Cranes, Yard Equipment, and Lashing: Container stowage position on deck rather than in the cargo hold, requiring lashing per the Cargo Securing Manual and exposure to weather loads.
Above-Tide Zone X28. Ship Recycling and End-of-Life: Beaching yard area above high-water mark where secondary cutting and material sorting occur.
Above-Water Hull F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Portion of the hull above the waterline.
Above-Water Survey X141. Marine Salvage Industry and Wreck Removal Contractors: Initial casualty assessment performed by salvage master from a workboat or helicopter before divers enter the water.
Aboveground Installation (ABI) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Subsea cable installation method in which the cable rests on the seabed surface, typically protected by rock berm or articulated pipe.
ABP X76. Stevedoring, Lashing and Cargo Securing: Associated British Ports, UK port operator running 21 ports including Southampton, Immingham, and Hull with in-house stevedoring.
Abrasion X61. Marine Lubricants and Cylinder Oils: Mechanical wear of liner and ring surfaces caused by hard particles such as cat fines, quantified through iron content in scrape-down analysis.
Abrasion Damage X5. Marine Surveying and Inspection: Surface wear of cargo, hull, or coatings caused by friction; commonly noted in steel cargo and hold linings.
Abrasion wear X124. Dredging Industry and Reclamation Contractors: Loss of metal from cutter teeth and pump impellers from sand and gravel, the dominant cost driver in CSD lifecycle economics.
Abrasion zone C4. Ports, terminals and coastal/marine civil engineering: Quay wall zone subject to mooring line and fender wear.
Abrasive Blast Cleaning X88. Marine Surface Preparation and Coatings Application: Mechanical surface preparation method propelling abrasive media against a substrate using compressed air, centrifugal wheels, or water to remove mill scale, rust, and existing coatings while…
Abrasive blasting X45. Marine Paints, Coatings and Antifouling: Surface preparation method propelling abrasive media at high velocity against steel to remove mill scale, rust, and old coatings before paint application.
Abrasive Blasting Residue X50. Ship Recycling, Demolition and Hong Kong Convention: Spent grit, paint chips, and metal scale generated when ship structures are surface-prepared before cutting, classified under Inventory of Hazardous Materials Part II as operationally generated waste.
Abrasive Cargo X1. Cargo Science, Commodities and Cargo Care: Cargo such as bauxite or iron ore that wears holds, hatch coamings, and grab teeth during handling.
Abrasive Metering Valve X88. Marine Surface Preparation and Coatings Application: Adjustable valve mounted beneath a blast pot that regulates the flow of dry abrasive into the compressed air stream feeding the blast hose.
Abrasive Recyclability X88. Marine Surface Preparation and Coatings Application: Property describing the number of reuse cycles an abrasive can sustain before fracturing into fines, with steel grit typically recycled 100 to 200 cycles and garnet typically 4 to 8 cycles.
Abrasive wear X47. Marine Fuel Quality and ISO 8217: Mechanical wear of liners, rings, and fuel injection equipment caused by hard particles such as catalytic fines in residual fuel.
Abreast X3. Ship Handling, Seamanship and Deck Vocabulary: Side by side; parallel to.
ABS X5. Marine Surveying and Inspection: American Bureau of Shipping; IACS member classification society.
ABS A1 X8. IACS, Class Rules and Class Notations: ABS principal hull classification notation for vessels built and maintained to ABS Rules for unrestricted service.
ABS ACC X8. IACS, Class Rules and Class Notations: ABS notation for centralized control of propulsion machinery from a continually manned control station.
ABS ACCU X8. IACS, Class Rules and Class Notations: ABS notation for automatic control of machinery in unattended centralized control, periodically unattended machinery space.
ABS Advisory on EGCS X69. EGCS Scrubbers, SCR and Marine Air Emissions: American Bureau of Shipping guidance document covering scrubber installation, survey and compliance considerations.
ABS Ammonia as Marine Fuel Guidance X140. Ammonia as Marine Fuel and Hydrogen Shipping: First-edition guide published 2020 by American Bureau of Shipping covering risk, bunkering, crew training, and tank arrangements for NH3-fueled ships.
ABS AMS X8. IACS, Class Rules and Class Notations: ABS notation for machinery built, installed and tested per ABS Rules under the Automated Machinery Space program.
ABS Autonomous Vessel Guide X109. Maritime Autonomous Surface Ships and MASS Code: The American Bureau of Shipping guide that establishes requirements for autonomous and remote-control functions on classed vessels.
ABS BCA X8. IACS, Class Rules and Class Notations: ABS notation indicating a bulk carrier built to Common Structural Rules.
ABS Bollard Pull Certificate X79. Tugs and Towage Industry: Certification issued by the American Bureau of Shipping documenting a tug's static bollard pull under defined test conditions.
ABS Bond X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: Average bond form commonly used to secure a cargo owner's contribution to general average pending final adjustment.
ABS CSR X8. IACS, Class Rules and Class Notations: ABS notation appended to class for vessels built to IACS Common Structural Rules.
ABS CyberSafety E3. Technology, digitalization and smart shipping: ABS class notation framework for cyber resilience.
ABS CyberSafety CS1 X107. Maritime Cybersecurity and OT Security: American Bureau of Shipping notation indicating informed cyber capability with documented policies for shipboard systems.
ABS CyberSafety CS2 X107. Maritime Cybersecurity and OT Security: ABS notation indicating capability plus implemented controls and monitoring for connected shipboard equipment.
ABS CyberSafety CS3 X107. Maritime Cybersecurity and OT Security: ABS notation for enhanced cyber capability including continuous monitoring and incident response readiness.
ABS CyberSafety Volume 2 X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents: The ABS guidance document on cybersecurity for the marine and offshore industries, defining capability levels CS1 through CS3.
ABS Eagle X54. Naval Architecture Software and IACS Rules: Brand prefix used by ABS for software and rule-related tools, including the Eagle SafeHull and Eagle FPSO suites.
ABS Eagle Insights X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Digital platform from the American Bureau of Shipping that delivers CII, EEXI, and EU MRV/ETS analytics for owners and managers.
ABS ENVIRO+ X8. IACS, Class Rules and Class Notations: ABS environmental protection notation recognising design and operational measures beyond statutory minima.
ABS FCI Cyber Risk X48. Maritime Cybersecurity: ABS Functional Connectivity and Integration cyber risk method that quantifies risk on operational technology systems using device-level scoring.
ABS Grade A X92. Marine Steel Suppliers and Shipbuilding Plate: Mild hull structural steel with minimum yield 235 MPa and tensile range 400 to 520 MPa, no Charpy impact requirement.
ABS Grade AH32 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel with minimum yield 315 MPa, Charpy impact tested at 0 degrees Celsius.
ABS Grade AH36 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel with minimum yield 355 MPa, the workhorse grade for modern shipbuilding.
ABS Grade AH40 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel with minimum yield 390 MPa used for VLCC and Capesize tonnage.
ABS Grade B X92. Marine Steel Suppliers and Shipbuilding Plate: Hull structural steel with yield 235 MPa, Charpy impact tested at 0 degrees Celsius.
ABS Grade D X92. Marine Steel Suppliers and Shipbuilding Plate: Hull structural steel with yield 235 MPa, Charpy impact tested at minus 20 degrees Celsius.
ABS Grade DH32 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel yield 315 MPa, Charpy impact tested at minus 20 degrees Celsius.
ABS Grade DH36 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel yield 355 MPa, Charpy impact tested at minus 20 degrees Celsius.
ABS Grade DH40 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel yield 390 MPa, Charpy impact tested at minus 20 degrees Celsius.
ABS Grade E X92. Marine Steel Suppliers and Shipbuilding Plate: Hull structural steel with yield 235 MPa, Charpy impact tested at minus 40 degrees Celsius.
ABS Grade EH32 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel yield 315 MPa, Charpy impact tested at minus 40 degrees Celsius.
ABS Grade EH36 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel yield 355 MPa, Charpy impact tested at minus 40 degrees Celsius.
ABS Grade EH40 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel yield 390 MPa, Charpy impact tested at minus 40 degrees Celsius.
ABS Grade EH47 X92. Marine Steel Suppliers and Shipbuilding Plate: Ultra high strength hull steel yield 460 MPa for ULCS hatch coamings, Charpy impact tested at minus 40 degrees Celsius.
ABS Grade FH32 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel yield 315 MPa, Charpy impact tested at minus 60 degrees Celsius.
ABS Grade FH36 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel yield 355 MPa, Charpy impact tested at minus 60 degrees Celsius.
ABS Grade FH40 X92. Marine Steel Suppliers and Shipbuilding Plate: Higher strength hull steel yield 390 MPa, Charpy impact tested at minus 60 degrees Celsius.
ABS Guide for Building and Classing X54. Naval Architecture Software and IACS Rules: Series of ABS technical publications setting requirements for specific vessel and offshore unit types.
ABS Guide for Building and Classing Offshore Installations X31. Helicopter Operations on Ships: American Bureau of Shipping rules; Chapter 4 covers helideck structural design and fire protection.
ABS Guide for Building and Classing Steel Vessels Under 90 Metres X30. Tug Operations and Harbour Towage: American Bureau of Shipping rules covering most harbor and escort tug hulls.
ABS Guide for Building and Classing Tugs X137. Harbour Tugs, Towage Operators and Tug Builders: American Bureau of Shipping classification rules covering hull scantlings, machinery and stability for harbour and ocean tugs.
ABS Guide for Building and Classing Yachts X35. Yacht and Superyacht Industry: American Bureau of Shipping rule set for yachts 24 m and above, covering structure, machinery, and equipment.
ABS Guide for Hull Condition Monitoring Systems X96. Hull Integrity Monitoring and Strain Gauges: Published guidance from the American Bureau of Shipping setting out requirements for HMS installation, sensors, software, and class notation issuance.
ABS Guide for Refrigerated Cargo X26. Reefer Containers and Cold Chain Logistics: American Bureau of Shipping classification guidance for vessels carrying refrigerated cargo and reefer containers.
ABS Guide for Vessels Operating with Reduced Manning X30. Tug Operations and Harbour Towage: ABS notation relevant to small-crew tug operations.
ABS HM-1 X96. Hull Integrity Monitoring and Strain Gauges: ABS hull monitoring class notation covering measurement of hull girder stresses on a limited number of locations.
ABS HM-2 X96. Hull Integrity Monitoring and Strain Gauges: ABS hull monitoring notation extending HM-1 with acceleration and motion measurement for slamming and whipping response.
ABS HM-3 X96. Hull Integrity Monitoring and Strain Gauges: ABS hull monitoring notation adding ice load monitoring channels for ice-class operation.
ABS Innovation Hub Singapore X109. Maritime Autonomous Surface Ships and MASS Code: An American Bureau of Shipping research and collaboration center focused on smart and autonomous shipping technologies in the Asia Pacific.
ABS LNG Bunkering Notation X110. LNG Bunkering Infrastructure and Vessels: American Bureau of Shipping class notation covering vessels equipped for LNG bunkering operations as supplier or receiver.
ABS MODU Rules X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: American Bureau of Shipping classification rules for Mobile Offshore Drilling Units governing structure, stability, and machinery.
ABS My Digital Fleet X74. AIS Data, Vessel Tracking and Maritime Intelligence: American Bureau of Shipping fleet performance and emissions reporting platform.
ABS Nautical Systems X29. Ship Sale and Purchase, Management Contracts and Valuation: Fleet management software suite owned by ABS.
ABS Nautical Systems NS5 X78. Voyage Optimization and Vessel Performance Software: A fleet management software suite, originally from Nautical Systems and now part of ABS, covering maintenance, procurement, safety, crewing, and dry dock modules.
ABS NIBS X8. IACS, Class Rules and Class Notations: ABS Navigation and Integrated Bridge System notation for integrated navigation arrangements.
ABS Real-time Wave (RW) X96. Hull Integrity Monitoring and Strain Gauges: ABS notation for installed wave measurement equipment providing real-time sea state to the bridge.
ABS River Rules X103. US Inland Waterway Towing and Barge: The ABS Rules for Building and Classing Vessels Intended for Service on Rivers and Intracoastal Waterways, the principal class reference for inland hulls.
ABS Rules for Building and Classing Steel Vessels X54. Naval Architecture Software and IACS Rules: Core ABS classification rule set covering hull, machinery, and equipment for commercial steel ships.
ABS SafeHull X54. Naval Architecture Software and IACS Rules: Direct calculation strength assessment system developed by ABS for tankers, bulk carriers, and container ships.
ABS SH X8. IACS, Class Rules and Class Notations: ABS SafeHull notation for vessels designed under the ABS SafeHull dynamic load and finite-element methodology.
ABS SH-DLA X8. IACS, Class Rules and Class Notations: ABS SafeHull Dynamic Loading Approach notation for ships analyzed by spectral-based direct calculation.
ABS Smart Vessel FUL X96. Hull Integrity Monitoring and Strain Gauges: ABS Smart notation tier recognizing fully integrated condition and performance monitoring across hull, machinery, and operations.
ABS Steel Vessel Rules X8. IACS, Class Rules and Class Notations: ABS Rules for Building and Classing Marine Vessels, the principal ABS classification rulebook.
ABS Surveyor X43. Marine Surveying and Warranty Surveying: A field surveyor employed by the American Bureau of Shipping who attends vessels for classification surveys, statutory inspections, and ISM/ISPS audits on behalf of flag administrations.
ABS Sustainability Notations X34. Decarbonization, Alternative Fuels and Carbon Pricing: American Bureau of Shipping class notations covering GHG, CII readiness, and decarbonization readiness, including the Carbon Smart Fleet (CSF) program.
ABS Wavesight X101. Vessel Brokerage Software and Chartering Platforms: ABS subsidiary launched in 2022 offering fleet management, voyage analytics, and compliance software derived from the former Nautical Systems product line.
Absalon-class X62. Naval Warships and Combat Systems: Royal Danish Navy command and support ship pair (Absalon L16, Esbern Snare L17) combining frigate armament with a flexible vehicle deck.
Absentee Crew List X86. Port Agency, Husbandry and Disbursement: Roster prepared by the agent identifying crew members who failed to rejoin the vessel before sailing.
Absolute humidity X16. Nautical Science, Navigation and COLREGs: Mass of water vapor per unit volume of air.
Absolute Liability X53. Marine Insurance, P&I and Hull Clauses: A liability standard, applied under regimes such as the CLC, in which the shipowner is liable for pollution damage regardless of fault, subject to narrow statutory defenses.
Absolute Pressure X82. Saturation Diving and Offshore Diving Operations: Total pressure on a diver including atmospheric and hydrostatic components.
Absolute Total Loss X4. Marine Insurance, P&I and Claims: alternative term used in some markets for actual total loss where the subject matter is irretrievably destroyed.
Absolute viscosity X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Dynamic viscosity expressed in centipoise (cP) or millipascal-seconds (mPa.s), distinct from kinematic viscosity.
Absorbed Hydrocarbons X50. Ship Recycling, Demolition and Hong Kong Convention: Oil residues retained in insulation, bilge wood, and engine room lagging, requiring tracking under MEPC.269(68) maintenance updates to the Inventory of Hazardous Materials.
Absorbed Moisture X1. Cargo Science, Commodities and Cargo Care: Water held within the cargo matrix rather than on its surface, relevant to grain and concentrates.
Absorbent (amine) X34. Decarbonization, Alternative Fuels and Carbon Pricing: Liquid solvent such as MEA used in post-combustion CO2 capture aboard ships.
Absorber Tower X69. EGCS Scrubbers, SCR and Marine Air Emissions: Vertical column in a wet scrubber where exhaust gas contacts alkaline washwater for SO2 removal.
Absorption refrigeration X26. Reefer Containers and Cold Chain Logistics: Heat-driven cycle using ammonia-water or lithium bromide-water; rare in marine reefer containers, used in some ship provision plants.
Absorption Refrigeration (Fishing Vessel) X87. Fishing Vessels and Fisheries Management: Ammonia-water chiller plant used on some older trawlers for hold cooling where compressor systems were impractical.
Abstract of Log X155. Marine Surveying Practice and Cargo Inspection: A surveyor-prepared summary of the deck and engine room log entries relevant to a casualty, voyage, or cargo claim, extracted from the official log book for use in evidence.
Abu Dhabi Ports Group X138. Global Container Terminal Operators and Port Equipment: State-owned operator of Khalifa Port and ten other UAE ports, listed on the Abu Dhabi Securities Exchange in February 2022 under ticker ADPORTS.
Abuja MoU A7. Compliance, certification and enforcement: Memorandum of Understanding on PSC for West and Central African Region.
Abuja MOU Information System X66. Port State Control and Regional MOUs: IMOSAR, the regional PSC database used by Abuja MOU authorities to record inspections and deficiencies.
Abuja MOU Member States X66. Port State Control and Regional MOUs: Includes Angola, Benin, Cameroon, Cape Verde, Congo, Cote d'Ivoire, DRC, Equatorial Guinea, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Mauritania, Namibia, Nigeria, Sao Tome and Principe…
Abuse of Rights A6. Public international law of the sea: Principle restraining excessive exercise of treaty rights, recognized in UNCLOS Article 300.
Abyssal Hill D2. Hydrography, tides, waves, bathymetry and marine geology: Small elevations on the abyssal plain formed at mid-ocean ridges.
Abyssal Plain D2. Hydrography, tides, waves, bathymetry and marine geology: Flat region of the deep ocean floor, typically below 4,000 meters.
Abyssal Zone D1. Physical and chemical oceanography and marine meteorology: Ocean depth zone from approximately 4,000 to 6,000 meters, characterized by near-freezing temperatures and high pressure.
Abyssopelagic zone X10. Marine Biology, Fisheries and Oceanography: Open-ocean water column from about 4,000 to 6,000 m depth, perpetually dark and cold.
AC X19. Engine Room Watchkeeping and UMS Operations: Alternating current, the standard distribution form for ship low voltage systems at 440 V 60 Hz or 400 V 50 Hz.
AC 150/5390-2C X31. Helicopter Operations on Ships: FAA Advisory Circular for heliport design, including offshore platform heliports.
AC Excitation System X67. Marine Electrical Systems and Shore Power: Brushless excitation arrangement on synchronous generators using a rotating AC exciter and rotating rectifier.
AC export cable X42. Offshore Wind Installation and Cable Lay: High-voltage alternating current submarine cable used to transmit offshore wind power to shore over moderate distances.
AC impressed current X45. Marine Paints, Coatings and Antifouling: Incorrect terminology; impressed current cathodic protection systems use rectified DC, not AC, to polarize the hull.
AC Inverter Drive X94. Port Machinery and Quay Equipment Makers: Variable-frequency drive used on STS and RTG cranes to control hoist and trolley motors with regenerative braking capability.
AC Motor-Driven Pump X63. Marine Auxiliary Machinery and Pumps: Pump unit driven by an alternating current induction motor through direct, belt, or flexible coupling.
AC primer X165. Marine Coatings, Antifouling, and Hull Husbandry: Anti-corrosive primer, the first applied layer over blast-cleaned steel intended to inhibit oxidation before topcoats.
AC Submarine Cable X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Alternating-current submarine power cable used for shorter offshore wind export links, generally below about 80 km due to charging current losses.
AC-14 X3. Ship Handling, Seamanship and Deck Vocabulary: Stockless, high-holding-power anchor of Admiralty Cast pattern.
AC-14 Anchor X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral: High-holding-power stockless anchor of the AC-14 pattern accepted by IACS UR A1 with a holding-power factor approximately twice that of an ordinary stockless anchor.
AC-681 X126. Marine Oil Spill Response and OPRC Regimes: Brazilian-manufactured oil spill dispersant approved by IBAMA for offshore application in Brazilian waters.
AC1 X44. Shipping Indices, FFAs and Freight Markets: Baltic Exchange Aframax route Ceyhan to Lavera, assessed in Worldscale points for an 80,000 metric ton cargo of crude oil.
AC2 X44. Shipping Indices, FFAs and Freight Markets: Historical Baltic Aframax route for North Sea crude liftings, used as a benchmark for Atlantic Aframax trade before consolidation into the current TD basket.
AC36 X84. Yacht Racing, Regattas and Sailing Governance: The 36th America's Cup, contested March 2021 in Auckland and won by Emirates Team New Zealand against Luna Rossa Prada Pirelli.
AC37 X84. Yacht Racing, Regattas and Sailing Governance: The 37th America's Cup, contested October 2024 in Barcelona and won 7-2 by Emirates Team New Zealand over INEOS Britannia.
AC50 X84. Yacht Racing, Regattas and Sailing Governance: The 50-foot foiling wing-sail catamaran class used at the 35th America's Cup in Bermuda 2017.
AC72 X84. Yacht Racing, Regattas and Sailing Governance: The 72-foot foiling wing-sail catamaran class used at the 34th America's Cup in San Francisco 2013.
AC75 X84. Yacht Racing, Regattas and Sailing Governance: The 75-foot foiling monohull class introduced for the 36th America's Cup in 2021 and retained for AC37 in 2024.
Academia Politehnica Navala X121. Maritime Education, Academies and Universities: Older Romanian designation referencing naval polytechnic studies in Constanta, predecessor terminology to the current Constanta Maritime University.
Academy X21. STCW Certificates, Crewing and Seafarer Welfare: Maritime Education and Training institution authorized by a flag State to deliver STCW approved programs.
Acadia Maritime Studies X121. Maritime Education, Academies and Universities: Atlantic Canadian undergraduate offerings combining oceanography and small-craft handling, run from Wolfville, Nova Scotia.
Acanthaster planci X10. Marine Biology, Fisheries and Oceanography: Crown-of-thorns starfish, a coral-eating sea star that causes major reef outbreaks in the Indo-Pacific.
Acapulco Galleon X39. Pre-1900 Maritime History: Spanish trading vessel that crossed the Pacific between Manila and Acapulco from 1565 to 1815 carrying silver and silks.
Acartia tonsa X10. Marine Biology, Fisheries and Oceanography: Cosmopolitan calanoid copepod common in estuarine and coastal zooplankton.
ACBL X103. US Inland Waterway Towing and Barge: American Commercial Barge Line, the Jeffersonville, Indiana headquartered dry and liquid cargo barge operator and one of the largest US inland fleets.
Accademia Italiana della Marina Mercantile X160. Maritime Academies, Universities, and STCW Certification: Italian merchant marine academy in Genoa established in 2004 to train deck and engineer officers for the Italian flag.
Accelerated Award X13. Marine Salvage and Wreck Removal: Expedited salvage arbitration ruling under Lloyd's procedures for low-value or uncontested claims.
Accelerated Cooling X92. Marine Steel Suppliers and Shipbuilding Plate: AC process applying controlled water cooling after rolling to refine microstructure in TMCP shipbuilding plate.
Accelerated stability test X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Laboratory aging procedure such as ASTM D4625 used to predict long-term fuel stability.
Accelerated Survey X142. Classification Societies and Class Notations: Survey item credited ahead of its due date, typically within three months prior.
Accelerated total sediment (TSA) X47. Marine Fuel Quality and ISO 8217: Sediment content of a residual fuel measured by ISO 10307-2 Procedure A after aging at 100 C, used as a stability indicator.
Accelerating duct X38. Propellers, Stern Gear and Shaft Lines: Annular nozzle profile (Kort 19A family) that accelerates flow into the propeller, increasing bollard thrust at low advance ratios.
Acceleration Ellipse X9. Cargo Securing, Lashing and Stability Vocabulary: Graphical representation in CSS Annex 13 plotting transverse and vertical accelerations to determine resultant force on cargo.
Acceleration Factor X9. Cargo Securing, Lashing and Stability Vocabulary: Multiplier applied in CSS Annex 13 based on stowage location (forward, midships, aft) and ship length.
Acceleration Force X9. Cargo Securing, Lashing and Stability Vocabulary: External force on cargo derived from ship motion, calculated per CSS Annex 13 as mass times g times acceleration coefficient.
Acceleration ice load X27. Polar Code, Ice Navigation and Polar Operations: Dynamic load on hull from ice impact during ramming or transit through pack ice.
Acceleration, longitudinal X76. Stevedoring, Lashing and Cargo Securing: Fore-and-aft inertial force on stowed cargo arising from pitching and surging, an input to CSS Code Annex 13 lashing calculations.
Acceleration, transverse X76. Stevedoring, Lashing and Cargo Securing: Athwartships inertial force from rolling and swaying, generally the dominant lashing load case for on-deck containers.
Acceleration, vertical X76. Stevedoring, Lashing and Cargo Securing: Up-and-down inertial force from heaving and pitching, applied as a multiplier on cargo weight in securing calculations.
Accelerator X45. Marine Paints, Coatings and Antifouling: Additive incorporated into a coating to speed cure rate, particularly in two-pack epoxy and polyurethane systems applied in cold conditions.
Accelerometer X96. Hull Integrity Monitoring and Strain Gauges: Inertial transducer measuring linear acceleration of hull or superstructure, used for slamming, whipping, springing, and vibration monitoring.
Acceptable fuel pathway X34. Decarbonization, Alternative Fuels and Carbon Pricing: Production route certified as meeting GHG intensity criteria under FuelEU Maritime or the IMO LCA framework.
Acceptance X4. Marine Insurance, P&I and Claims: underwriter's signature on a slip binding the offered share of the risk.
Acceptance Certificate X29. Ship Sale and Purchase, Management Contracts and Valuation: Buyers' written acceptance of vessel at delivery.
Acceptance Check X75. IMDG Code, Classes, Packing and Segregation: Pre loading inspection of dangerous goods packages, marks, labels and documentation by carrier or terminal under IMDG 1.4.
Acceptance Criteria X40. Tanker Vetting, SIRE and VIQ: The internal screening thresholds an oil major or charterer applies to a vessel's inspection record, age, class, and operator history before issuing a voyage approval.
Acceptance Criteria for Recycling Facility X50. Ship Recycling, Demolition and Hong Kong Convention: The set of structural, environmental, and worker safety thresholds a yard must satisfy before a classification society can issue a Statement of Compliance under MEPC.211(63).
Acceptance criterion, lashing X76. Stevedoring, Lashing and Cargo Securing: Rule requiring calculated load on any securing element to remain at or below its MSL under the design sea state.
Acceptance Letter X28. Ship Recycling and End-of-Life: Ship recycling facility's written confirmation accepting a vessel for dismantling under a specific contract.
Acceptance of Abandonment X53. Marine Insurance, P&I and Hull Clauses: The underwriter's affirmative acknowledgment of a notice of abandonment, rarely given in modern practice, that vests title to the wreck in the insurer.
Acceptance of LOF X99. Marine Salvage Awards and SCOPIC: Master's signature on the Lloyd's Open Form binding owners of vessel and cargo to salvage on a no cure, no pay basis.
Acceptance of NOR X86. Port Agency, Husbandry and Disbursement: Formal acknowledgment by charterer or receiver that a tendered Notice of Readiness is valid for laytime commencement.
Acceptance of pilot X32. Marine Pilotage and Pilot Operations: Master's act confirming the pilot has boarded and assumed advisory duties, recorded in the bridge logbook.
Acceptance of Service Clause X51. Maritime Arbitration, Law and BIMCO Clauses: A charterparty or contract provision nominating an agent within the chosen jurisdiction empowered to receive originating process on behalf of a foreign party.
Acceptance Survey X5. Marine Surveying and Inspection: Inspection on delivery of a newbuild or chartered vessel confirming compliance with contract specifications.
Acceptance test B2. Marine Engineering: Factory or shop trial to verify contractual performance.
Acceptance Test Certificate X104. Project Cargo Forwarders and Heavy Transport: Manufacturer document confirming a project unit has passed factory acceptance testing before dispatch.
Acceptance Testing X8. IACS, Class Rules and Class Notations: shipyard and class verification that systems, structures and equipment meet rule requirements before delivery.
Acceptance trial B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Owner's trial demonstrating contract performance.
Acceptance, Lloyd's X117. Marine Insurance Markets, Captives and Reinsurance: The formal binding of a risk by a Lloyd's syndicate via the leading underwriter's stamp on the slip.
Access channel X15. Ports, Terminals and Stevedoring: dredged waterway leading from sea to the port basin.
Access Control X107. Maritime Cybersecurity and OT Security: Selective restriction of who or what can view or use shipboard digital resources.
Access Control List X48. Maritime Cybersecurity: Rule set governing which users, processes, or network hosts may reach a shipboard resource such as an ECDIS share or an engine control LAN.
Access Control List (ACL) X25. Maritime Cybersecurity, OT and IT: Rule set on a router, switch or firewall that permits or denies traffic by source, destination, port or protocol.
Access Hole X5. Marine Surveying and Inspection: Opening cut or fitted in structure to allow surveyor entry; subject to closure approval.
Access platform X42. Offshore Wind Installation and Cable Lay: Secondary steel structure welded to the transition piece allowing crew transfer vessel boat landing access.
Access Refusal X146. Port State Control Regimes, MoUs, and Inspection Systems: A sanction under the Paris MoU and Tokyo MoU regimes by which a ship is denied entry to any port of the member States after repeated detentions.
Access Road Survey X104. Project Cargo Forwarders and Heavy Transport: Field study of the haul route to identify width, gradient, and overhead obstructions.
Access to Casualty X99. Marine Salvage Awards and SCOPIC: Practical and legal ability of salvors to board and work on a stricken vessel, often arranged through local port state authorities.
Access to Spaces X66. Port State Control and Regional MOUs: Inspector right of access to all parts of the ship under SOLAS XI-1/4 and PSC procedures.
Accessibility X59. Offshore Wind O&M, CTVs and SOVs: The percentage of time during which sea state and weather permit safe technician transfer from a CTV or SOV to a wind turbine boat landing or gangway.
Accession A1. The IMO and the international regulatory framework: Act by which a non-signatory state becomes party to a treaty already in force.
Accident X12. Maritime Casualties and Investigation: General term encompassing casualties and incidents resulting in loss, damage, injury, or pollution.
Accident Investigation Board Norway (AIBN) X163. Marine Accident Investigation Agencies and Landmark Inquiries: Norwegian independent multimodal safety investigation authority based at Lillestrom whose marine department investigates casualties involving Norwegian-flag vessels and serious occurrences in…
Accident Investigation Code (Casualty Investigation Code) X163. Marine Accident Investigation Agencies and Landmark Inquiries: Common short title for the IMO Code of the International Standards and Recommended Practices for a Safety Investigation into a Marine Casualty or Marine Incident, adopted by Resolution MSC.255(84).
Accident Investigation Survey X43. Marine Surveying and Warranty Surveying: A forensic attendance by a marine surveyor following a casualty to gather physical evidence, interview crew, and produce a factual report for insurers, owners, or flag state.
Accident report X163. Marine Accident Investigation Agencies and Landmark Inquiries: Final written output of a marine safety investigation containing factual findings, analysis, conclusions, contributory factors, and safety recommendations.
Accidental Discharge (Annex I) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: An unintentional release of oil or oily mixture from a ship, exempted from the discharge prohibitions of Annex I Reg 4 only where all reasonable precautions were taken after the casualty.
Accidental Pollution Control Plan X50. Ship Recycling, Demolition and Hong Kong Convention: The contingency document a Hong Kong Convention compliant yard maintains to address oil spills, fires, and chemical releases during dismantling, audited under MEPC.197(62) inspection guidelines.
Acclimatization X82. Saturation Diving and Offshore Diving Operations: Physiological adjustment of a saturation diver to elevated ambient pressure.
Accommodation Barge E4. Cruise, offshore energy and auxiliary/specialised fleets: Non-propelled offshore lodging unit for workers.
Accommodation block shielding X76. Stevedoring, Lashing and Cargo Securing: Reduction in wind area on aftmost container stacks behind the deckhouse, sometimes credited in lashing calculations.
Accommodation Deficiency X66. Port State Control and Regional MOUs: 09000 series deficiency relating to crew accommodation under MLC 2006 or SOLAS as applicable.
Accommodation Flotel X14. Offshore Oil and Gas Marine Operations: Semi-submersible or monohull vessel providing offshore beds, often with gangway.
Accommodation Inspection X5. Marine Surveying and Inspection: Examination of crew quarters under MLC 2006 Title 3 for habitability and hygiene.
Accommodation ladder C2. Ship operations, crewing and technical management: Inclined ladder hung over the ship's side for access.
Accommodation ladder angle X32. Marine Pilotage and Pilot Operations: Maximum inclination 55 degrees from horizontal for pilot transfer combination arrangement.
Accommodation Ladder Inspection X86. Port Agency, Husbandry and Disbursement: Agency-arranged safety check of the gangway before shore personnel board the vessel.
Accommodation Line X4. Marine Insurance, P&I and Claims: business written by an underwriter as a favor to a broker or assured rather than on technical merit.
Accommodation standards X21. STCW Certificates, Crewing and Seafarer Welfare: MLC Title 3 minimum requirements for sleeping rooms, mess, sanitary, and recreational spaces aboard ship.
Accommodation Standards (MLC Title 3) X102. Seafarer Welfare and Maritime Charities: Maritime Labour Convention requirements covering cabin size, ventilation, heating, lighting, sanitary facilities, and noise on ships of 500 GT and above.
Accommodation Stores X120. Marine Catering, Provisions and Ship Chandlers: IMPA section 17 covering cabin and recreational items including bed linen, towels, and crew welfare supplies.
Accommodation Vessel E4. Cruise, offshore energy and auxiliary/specialised fleets: Self-propelled offshore lodging ship.
Accompanying Engineer X104. Project Cargo Forwarders and Heavy Transport: Forwarder or carrier engineer who travels with the cargo to oversee handling at each interface.
Account X4. Marine Insurance, P&I and Claims: the aggregate of premium and claims relating to an assured, broker, or class of business.
Account Lockout X48. Maritime Cybersecurity: Authentication control that disables a shipboard user account after a defined number of failed login attempts to deter brute-force attacks.
Account, broker's X71. Shipbrokers and Brokerage Firms: The principal on whose behalf a shipbroker negotiates a charter, sale, or newbuilding contract.
Accredited Inspector X40. Tanker Vetting, SIRE and VIQ: An individual who has completed OCIMF training, examination, and mentoring to be authorized to conduct SIRE or OVID inspections on behalf of OCIMF Submitting Members.
Accredited Laboratory X28. Ship Recycling and End-of-Life: ISO/IEC 17025 lab performing analysis of IHM samples for asbestos, PCBs, heavy metals, and ODS.
Accredited Marine Surveyor (AMS) X155. Marine Surveying Practice and Cargo Inspection: The professional designation granted by the Society of Accredited Marine Surveyors (SAMS) in the United States after peer review and examination.
Accredited verifier X34. Decarbonization, Alternative Fuels and Carbon Pricing: Body accredited to ISO 14065 or ISO 17029 authorized to verify EU MRV, EU ETS, and FuelEU Maritime data.
Accretion D5. Coastal processes, sea-level, cryosphere and ocean observation science: Build-up of sediment forming shoreline progradation.
Accretionary Prism D2. Hydrography, tides, waves, bathymetry and marine geology: Wedge of sediment scraped off a subducting plate at a convergent margin.
Accropode X175. Port Engineering, Dredging, Breakwaters, and Quays: Single-layer concrete armour unit developed by Sogreah (now Artelia) of France in 1980 for rubble mound breakwater armouring.
Accropode II X175. Port Engineering, Dredging, Breakwaters, and Quays: Improved single-layer concrete armour unit developed by Artelia in 1999 as a successor to the original Accropode.
Accrued Port Dues X86. Port Agency, Husbandry and Disbursement: Charges accumulated against the vessel between arrival and departure pending final assessment by port authority.
Accumulated Sludge X50. Ship Recycling, Demolition and Hong Kong Convention: Heavy hydrocarbon residue collected in settling tanks, separator sludge tanks, and fuel oil purifier drains, listed as Part II hazardous material under MEPC.269(68).
Accumulated Tolerance X9. Cargo Securing, Lashing and Stability Vocabulary: Gap between cargo and securing structure that must be accounted for in lashing calculations.
Accumulation X4. Marine Insurance, P&I and Claims: aggregation of exposures from a single event affecting multiple insured risks.
Accumulation Rate (Steel Scrap) X118. Ship Recycling Yards, Beaches and Regulation: Annual addition to a recycling country's secondary steel pool from ship demolition, used by GMS and Clarksons to estimate downstream rebar supply in South Asia.
Accumulation yard X15. Ports, Terminals and Stevedoring: pre-stow area where containers are staged before vessel loading.
Accumulator X19. Engine Room Watchkeeping and UMS Operations: Pressure vessel storing hydraulic oil under nitrogen precharge, used in steering gear and fuel injection systems.
Accumulator Tank X63. Marine Auxiliary Machinery and Pumps: Pressurized vessel that maintains hydrophore pressure in fresh water, sanitary, or hydraulic systems.
Accumulator Test X5. Marine Surveying and Inspection: Pressure test of hydraulic accumulators on hatch cover and steering systems.
Accuracy X16. Nautical Science, Navigation and COLREGs: Degree of conformance between an estimated or measured position and the true position.
Accuracy of Position X73. Marine Hydrography, Charting and ENC: The ENC attribute POSACC, recorded in metres of horizontal uncertainty for charted features.
ACE C3. Logistics, freight forwarding and multimodal trade: Automated Commercial Environment, US Customs system.