Glossary

Maritime glossary, terms beginning with H (page 2)

All maritime glossary terms that begin with the letter H, drawn from every subject section. 1949 entries.

Showing 250 of 1949 terms (page 2 of 8).

Happiness Index X154. Maritime Welfare, Seafarer Charities, and MLC Rights: Mission to Seafarers' quarterly Seafarers Happiness Index, polling crew on welfare, food, contact, and shore leave.
Happy Buccaneer X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel with twin cranes, long operated for module transport.
Happy Delta X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel.
Happy Diamond X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel with twin mast cranes.
Happy Dover X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel equipped with two 900-tonne mast cranes for tandem heavy-lift operations.
Happy Dragon X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel.
Happy Dynamic X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel.
Happy Ranger X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel.
Happy River X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel.
Happy Rover X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel.
Happy Sky X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel of the Sky class.
Happy Star X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel with twin mast cranes for tandem heavy lifts.
Happy Sun X81. Project Cargo, Heavy-Lift and Module Carriers: BigLift Shipping heavy-lift vessel.
Harassment and Bullying Amendment X154. Maritime Welfare, Seafarer Charities, and MLC Rights: MLC 2016 amendment requiring measures against shipboard harassment and bullying.
Harbin Engineering University X160. Maritime Academies, Universities, and STCW Certification: Chinese university in Heilongjiang province specializing in naval architecture, marine engineering, and underwater acoustics.
Harbin Engineering University College of Shipbuilding Engineering X121. Maritime Education, Academies and Universities: Chinese national-key shipbuilding faculty in Harbin, founded 1953, training naval architects.
Harbor basin X175. Port Engineering, Dredging, Breakwaters, and Quays: Sheltered water area within a port where vessels manoeuvre and berth.
Harbor Boat X103. US Inland Waterway Towing and Barge: A small towboat employed in port and fleet shifting work.
Harbor Density X115. Marine Bunker and Cargo Surveying: Density of harbor water measured at the time of draft survey, used to convert vessel displacement to mass.
Harbor Island Yard X113. Drydock and Ship Repair Yards: Vigor Industrial facility on Harbor Island in Seattle, Washington, providing ship repair and barge construction.
Harbor master X15. Ports, Terminals and Stevedoring: senior port officer responsible for marine operations and safety.
Harbor Master Liaison X86. Port Agency, Husbandry and Disbursement: Agent communication with the harbor master on movements and clearances.
Harbor Pilot F3. Seafaring Life, Education, Professions and Institutions: Compulsory pilot for port entry and departure.
Harbor porpoise X10. Marine Biology, Fisheries and Oceanography: *Phocoena phocoena*, a small Northern Hemisphere odontocete.
Harbor seal X10. Marine Biology, Fisheries and Oceanography: *Phoca vitulina*, a widespread coastal phocid of the Northern Hemisphere.
Harbor Seal Interaction (Salmon Gillnet) X87. Fishing Vessels and Fisheries Management: Pinniped depredation event affecting catch in coastal salmon gillnet fisheries.
Harbor Tug E4. Cruise, offshore energy and auxiliary/specialised fleets: Tug for berthing and port maneuvers.
Harbor watch X19. Engine Room Watchkeeping and UMS Operations: Reduced engineering watch maintained in port with cargo and auxiliary loads active.
Harbour X73. Marine Hydrography, Charting and ENC: Usage band 5 in the ENC scale hierarchy.
Harbour basin C4. Ports, terminals and coastal/marine civil engineering: Sheltered water area for berthing.
Harbour Litigation Funding X114. Maritime Arbitration and Shipping Law Firms: London-based litigation funder backing maritime claims.
Harbour master C4. Ports, terminals and coastal/marine civil engineering: Statutory authority for port operations.
Harbour Master Office X73. Marine Hydrography, Charting and ENC: Charted on ENCs via the HRBFAC object class.
Harbour mobile crane X15. Ports, Terminals and Stevedoring: HMC, rubber-tyred multipurpose crane such as Liebherr LHM 800 or Konecranes ESP.10.
Harbour pilot X15. Ports, Terminals and Stevedoring: pilot conducting port arrival, shifting, and departure manoeuvres.
Harbour resonance C4. Ports, terminals and coastal/marine civil engineering: Long wave oscillation within a basin.
Harbour Speed X132. High-Speed Craft, Hydrofoils and Ferry Operators: Speed limit, typically 5 to 10 knots, applied to HSCs within port limits and pilotage areas.
Harbour tug C4. Ports, terminals and coastal/marine civil engineering: Conventional or ASD tug serving port.
Hard a-port X3. Ship Handling, Seamanship and Deck Vocabulary: Helm order for full rudder to port.
Hard a-starboard X3. Ship Handling, Seamanship and Deck Vocabulary: Helm order for full rudder to starboard.
Hard Aground X103. US Inland Waterway Towing and Barge: A grounding sufficient to require assist towage or lightering.
Hard Arm X20. LNG Operations and Custody Transfer: Articulated steel cryogenic loading arm replacing hose at fixed jetties; OEMs include FMC, KLAW, Niigata Loading Systems.
Hard Boom X60. Marine Salvage and Wreck Removal: Rigid foam filled containment boom suited to protected waters.
Hard coating X45. Marine Paints, Coatings and Antifouling: Coating that has cured fully and does not soften under solvent or service temperature, distinguished from a soft coating in MARPOL applications.
Hard Hat X82. Saturation Diving and Offshore Diving Operations: Heavy commercial diving helmet such as the Kirby Morgan 37.
Hard Hat, Pilot X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Personal protective head equipment now standard for pilots when climbing combination arrangements.
Hard insoluble matrix paint X18. Ballast Water, Biofouling and Antifouling: Antifouling coating where the resin matrix does not dissolve, relying solely on biocide leaching.
Hard Market X53. Marine Insurance, P&I and Hull Clauses: A market condition characterized by rising premiums, restricted capacity, and tightening of terms.
Hard on the Wind X84. Yacht Racing, Regattas and Sailing Governance: Sailing as close to the wind as practical, equivalent to close-hauled.
Hard over X3. Ship Handling, Seamanship and Deck Vocabulary: Helm at the limit of its travel.
Hard Patch Survey X5. Marine Surveying and Inspection: Inspection and approval of permanent hard insert plate repair.
Hard Scale X5. Marine Surveying and Inspection: Tightly adhering rust scale; recorded and removed before gauging.
Hard stand X15. Ports, Terminals and Stevedoring: paved area for heavy equipment storage.
Hard-to-abate sector X34. Decarbonization, Alternative Fuels and Carbon Pricing: Industry segment, including international shipping, where decarbonization is technically and economically difficult.
Hardener X45. Marine Paints, Coatings and Antifouling: Reactive Component B that cures the base resin in a two-pack coating.
Hardening X22. Piracy, Maritime Security and Armed Protection: Cumulative physical and procedural measures making a vessel a less attractive target.
Hardening (Vessel) E1. Maritime security, geopolitics and risk: Physical anti-piracy measures (razor wire, water cannon, dummies).
Hardloi Steel X118. Ship Recycling Yards, Beaches and Regulation: Domestic re-roller in Gujarat consuming Alang plate scrap; one of many secondary mills around Bhavnagar and Sihor.
Hardness X45. Marine Paints, Coatings and Antifouling: Resistance of a cured coating to indentation, measured by Persoz, Sward, or shore durometer.
Hardness test (HV/HB) B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Vickers or Brinell hardness check.
Hardox X92. Marine Steel Suppliers and Shipbuilding Plate: SSAB branded family of abrasion resistant quenched and tempered plate.
Hardship clause X152. Maritime Arbitration and Dispute Resolution: Contractual provision allowing renegotiation on supervening events; disputes over operation may be arbitrated.
Hardship Petition X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: A submission to OFAC seeking case-specific relief from a sanctions effect, used by maritime parties facing inadvertent exposure.
Hardstand X58. Shipbuilding Yards and Construction: Paved open area on which blocks and megablocks are assembled before crane lift to the dock.
Hardtop X165. Marine Coatings, Antifouling, and Hull Husbandry: Jotun's two-component aliphatic polyurethane topside topcoat range, including Hardtop AX and Hardtop XP.
Hardtop Easy Clean X165. Marine Coatings, Antifouling, and Hull Husbandry: Jotun fluorinated polyurethane topcoat marketed for improved soil release and gloss retention on superstructures.
Hardware In The Loop X109. Maritime Autonomous Surface Ships and MASS Code: A test method in which production autonomy hardware drives a simulated vessel and environment for verification.
Hardware Question X40. Tanker Vetting, SIRE and VIQ: A SIRE 2.0 question category covering the physical condition, configuration, and functionality of vessel equipment.
Hardware Security Module X48. Maritime Cybersecurity: Tamper resistant device that stores cryptographic keys used for code signing and authentication.
Hardware Security Module (HSM) E3. Technology, digitalization and smart shipping: Dedicated crypto device used in eBL/PKI.
Hardware Time Sync X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Use of PPS pulses and ZDA strings from a survey GNSS to discipline sonar and INS time, eliminating processing latency biases.
Hardwood Logs X1. Cargo Science, Commodities and Cargo Care: Heavy logs; deck cargo lashed under Timber Code.
Hardy A, MV X127. Maritime Security, Anti-Piracy and PMSCs: Vessel reported in 2024 Houthi targeting communications; one of the 100-plus vessels addressed by Yemen-based threats.
Harken X79. Tugs and Towage Industry: Marine hardware brand whose deck fittings sometimes appear on smaller tugs and pilot launches.
Harland & Wolff Belfast X113. Drydock and Ship Repair Yards: Historic Northern Ireland shipyard with the Belfast Building Dock and Thompson Dock, undertaking newbuild and repair work.
Harland and Wolff X39. Pre-1900 Maritime History: Belfast shipbuilder founded in 1861 by Edward Harland and Gustav Wolff.
Harmful Algal Bloom (HAB) X10. Marine Biology, Fisheries and Oceanography: Algal bloom that causes harm to humans, ecosystems, or fisheries.
Harmful Substance (Reg 1 Annex III) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: A substance identified as a marine pollutant in the IMDG Code, the IBC Code, or the BCH Code; carriage in packaged form is regulated by Annex III.
Harmful Substances A3. Marine environmental legislation: MARPOL and its annexes: Term used in MARPOL Annex III, defined by reference to the IMDG Code.
Harmonic Analysis D2. Hydrography, tides, waves, bathymetry and marine geology: Decomposition of a tidal record into sinusoidal constituents.
Harmonic constants X16. Nautical Science, Navigation and COLREGs: Amplitudes and phases of tidal constituents at a port.
Harmonic Constituent D2. Hydrography, tides, waves, bathymetry and marine geology: Sinusoidal component of the tide such as M2 or S2.
Harmonic Distortion X67. Marine Electrical Systems and Shore Power: Deviation of voltage or current waveform from a pure sinewave, regulated by classification societies to 5 to 8 percent THD on marine buses.
Harmonic Filter X67. Marine Electrical Systems and Shore Power: Passive LC or active converter that absorbs harmonic currents produced by nonlinear loads.
Harmonic prediction X16. Nautical Science, Navigation and COLREGs: Method of predicting tides using harmonic constituents.
Harmonised CSR X8. IACS, Class Rules and Class Notations: see CSR-H, IACS harmonised rules for bulk carriers and oil tankers.
Harmonized Common Structural Rules X54. Naval Architecture Software and IACS Rules: 2015 update merging CSR-BC and CSR-OT into a single CSR-BC+OT document.
Harmonized CSR X142. Classification Societies and Class Notations: Common Structural Rules in their 1 July 2015 unified form.
Harmonized System X6. Container, Intermodal and Trade Codes: HS, six-digit WCO commodity classification used worldwide.
Harmonized System of Survey and Certification X7. Flag State, Port State Control and Detention Vocabulary: HSSC, IMO scheme aligning survey periodicity for statutory certificates.
Harmonized System of Survey and Certification (HSSC) X8. IACS, Class Rules and Class Notations: IMO scheme aligning statutory survey windows, implemented by ROs.
Harmonized Vessel Particulars Questionnaire (HVPQ) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The OCIMF-administered vessel particulars data set, equivalent in role to Q88 within the SIRE program.
Harmony of the Seas X24. Cruise, Passenger Ship and Ferry Operations: Royal Caribbean Oasis class ship delivered 2016.
Haropa Port X138. Global Container Terminal Operators and Port Equipment: French public port grouping Le Havre, Rouen and Paris created 1 June 2021.
Harpers Ferry-class LSD X106. Naval Surface Combatants: US Navy dock landing ship subclass of four ships derived from Whidbey Island-class with enhanced cargo capacity.
HARPEX X44. Shipping Indices, FFAs and Freight Markets: Container charter index published by Hamburg shipbroker Harper Petersen tracking time charter rates for container vessels by size class.
Harpoon X11. Naval Vessels, Warship Systems and Naval Architecture: Boeing AGM/RGM/UGM-84 subsonic anti-ship missile.
Harpoon (UGM-84) X91. Submarines and Submarine Cable Systems: Submarine-launched anti-ship missile variant in service with several navies.
Harpoon Block II X11. Naval Vessels, Warship Systems and Naval Architecture: GPS-aided land attack capable variant.
Harren & Partner X81. Project Cargo, Heavy-Lift and Module Carriers: Bremen-based ship management group, parent of Combi Lift and majority owner of SAL Heavy Lift since 2017.
Harriet Lane, USCGC (WMEC-903) X130. National Coast Guards and Cutter Fleets: Famous-class medium endurance cutter, homeported Portsmouth, Virginia.
Harris Kyriakides X114. Maritime Arbitration and Shipping Law Firms: Cyprus shipping law firm.
Harrison, John X39. Pre-1900 Maritime History: English clockmaker whose marine chronometers H1 (1735), H2 (1741), H3 (1759), and H4 (1759) solved the longitude problem.
Harry S. Truman (USS) CVN-75 X106. Naval Surface Combatants: Eighth Nimitz-class aircraft carrier, commissioned 1998.
Hart X127. Maritime Security, Anti-Piracy and PMSCs: Hart International Security, UK PMSC founded 1999, headquartered in Cyprus, with extensive maritime division.
Harter Act 1893 X51. Maritime Arbitration, Law and BIMCO Clauses: The US statute on carrier responsibilities for cargo damage, applicable before loading and after discharge.
Harter Act 1893 (US) X143. Landmark Maritime Law Cases and Doctrines: US statute on carrier liability for cargo.
Hartland Shipping Services X29. Ship Sale and Purchase, Management Contracts and Valuation: London broker publishing market reports.
Hartley H18 F4. Recreational Boating, Yachting and Sport: New Zealand trailer-sailer class.
Hartmann & Lund X71. Shipbrokers and Brokerage Firms: Smaller Hamburg-based shipbroker.
Hartshorn Marine X59. Offshore Wind O&M, CTVs and SOVs: UK CTV operator providing crew transfer services to East Coast wind farms.
Harumi Pier X164. Cruise Industry, Brands, Ship Classes, and Terminals: The principal cruise terminal in central Tokyo, built in 1932 and used by ships small enough to pass under Rainbow Bridge.
Harvest Control Rule (HCR) D4. Fisheries, aquaculture, blue economy and marine resources: Pre-agreed rule linking management action to stock status.
Harvest Strategy D4. Fisheries, aquaculture, blue economy and marine resources: Comprehensive plan integrating reference points and HCRs.
Harvey Gulf SOV X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Service Operation Vessel built by Eastern Shipbuilding for Harvey Gulf for US offshore wind work.
Harwich Haven X124. Dredging Industry and Reclamation Contractors: UK approach channel deepening for container traffic, recurring Boskalis and Van Oord scope.
Hash X25. Maritime Cybersecurity, OT and IT: Fixed length output of a cryptographic function such as SHA-256 used for integrity.
Hash Function X48. Maritime Cybersecurity: Algorithm that produces a fixed length value used to verify integrity of files and configurations.
Hastelloy X100. Marine Cathodic Protection and Anodes: A nickel alloy family with potential near +0.05 V vs Ag/AgCl that is typically the cathode in mixed marine couples.
HAT X10. Marine Biology, Fisheries and Oceanography: Highest Astronomical Tide.
HAT (Highest Astronomical Tide) D2. Hydrography, tides, waves, bathymetry and marine geology: Highest tidal level predicted under average meteorological conditions.
Hatch F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Opening in a deck for cargo access.
Hatch beam X3. Ship Handling, Seamanship and Deck Vocabulary: Removable beam supporting hatch boards.
Hatch Coaming X1. Cargo Science, Commodities and Cargo Care: Vertical rim of hatch opening; sealing surface for hatch covers.
Hatch Coaming Survey X5. Marine Surveying and Inspection: Inspection of coamings, top plates, and corner brackets.
Hatch cover X3. Ship Handling, Seamanship and Deck Vocabulary: Watertight cover over a cargo hatch.
Hatch cover (Macgregor) B2. Marine Engineering: Hydraulically operated weathertight hatch.
Hatch Cover Breach X13. Marine Salvage and Wreck Removal: Common ingress point during bulk carrier casualties prompting salvage.
Hatch Cover Deficiency X66. Port State Control and Regional MOUs: 03000 series deficiency relating to water/weathertight integrity.
Hatch cover failure X12. Maritime Casualties and Investigation: Mechanism implicated in bulk-carrier losses including Derbyshire.
Hatch Cover Hose Test X5. Marine Surveying and Inspection: Watertightness test of hatch covers with pressurized water.
Hatch cover lashing pad X76. Stevedoring, Lashing and Cargo Securing: Cast or fabricated foundation on a hatch cover for stacking cones or twistlocks.
Hatch Cover Strength X54. Naval Architecture Software and IACS Rules: Bulk carrier hatch cover rule requirements governed by IACS UR S21 and S21A.
Hatch Cover Survey X5. Marine Surveying and Inspection: Inspection of weathertight covers including seals, cleats, and panels.
Hatch Cover, Folding X1. Cargo Science, Commodities and Cargo Care: MacGregor-style cover for bulker holds.
Hatch foreman X15. Ports, Terminals and Stevedoring: stevedore supervisor for a specific hatch.
Hatch lid X15. Ports, Terminals and Stevedoring: alternative term for hatch cover.
Hatch list X15. Ports, Terminals and Stevedoring: container manifest by hatch for stowage planning.
Hatch Sealing X115. Marine Bunker and Cargo Surveying: Application of tamper-evident seals to closed hatches after loading to provide evidence of integrity during voyage.
Hatch Sealing Tape Inspection X5. Marine Surveying and Inspection: Verification of tape application for moisture sensitive cargoes.
Hatch survey C1. Commercial shipping, chartering, economics and finance: Survey to check hatch covers before loading.
Hatch Tape X1. Cargo Science, Commodities and Cargo Care: Sealing tape applied over hatch joins, sometimes pressure tested.
Hatch Tightness Test X155. Marine Surveying Practice and Cargo Inspection: A general term for any test used to verify weathertightness of a closed hatch cover, including hose, chalk, light, ultrasonic, and smoke testing.
Hatch Wire X103. US Inland Waterway Towing and Barge: A wire used to secure hatch covers in place during transit.
Hatchery X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Land-based facility producing fry, smolt, post-larvae or spat for grow-out.
Hatchless containership X76. Stevedoring, Lashing and Cargo Securing: Containership design without hatch covers, relying on extended cell guides and modified lashing patterns.
Hatchman X155. Marine Surveying Practice and Cargo Inspection: The surveyor's tally clerk or check-counter recording cargo movements at a specific hatch.
Hatlapa X63. Marine Auxiliary Machinery and Pumps: German manufacturer of marine deck machinery, air compressors, and steering gear.
Hatlapa L-Series X63. Marine Auxiliary Machinery and Pumps: Two-stage reciprocating air compressor range from Hatlapa.
Hatlapa thruster gear X38. Propellers, Stern Gear and Shaft Lines: Hatlapa-designed gear units used in some transverse thruster arrangements; brand now within MacGregor.
Hatlapa W-Series X63. Marine Auxiliary Machinery and Pumps: Vertical reciprocating starting air compressor series from Hatlapa.
HatMan X25. Maritime Cybersecurity, OT and IT: Alternate name for Trisis/Triton malware targeting Schneider Electric Triconex safety controllers.
Hatsushima-class X77. Naval Mine Warfare and Mine Countermeasures: A class of nine Japan Maritime Self-Defense Force minesweepers built by Hitachi and Nippon Steel from 1979.
Hatteras Yachts X35. Yacht and Superyacht Industry: US sportfishing and motor-yacht builder in New Bern, North Carolina.
Haugesund Hogskulen Vestlandet Maritime X121. Maritime Education, Academies and Universities: Western Norway University of Applied Sciences campus in Haugesund offering Nautical Science and the Norwegian Maritime Competence Center industry programs.
Haugesund Knutsen X110. LNG Bunkering Infrastructure and Vessels: 7,500 m3 LNG bunker vessel owned by Knutsen OAS Shipping.
Haul X3. Ship Handling, Seamanship and Deck Vocabulary: Pull on a rope; shift of wind.
Haul Back (Trawl) X87. Fishing Vessels and Fisheries Management: Phase of operation in which warps and net are recovered to the vessel.
Haversine formula B3. Nautical Science: Spherical trig relation used in distance/bearing.
Havfram Wind X123. Offshore Wind Installation Vessels and Operators: Norwegian WTIV operator owned by Hy24 and Sandbrook Capital, vessels Havfram Wind 1 and 2 under construction.
Havila Capella X85. Ferries, Ro-Pax Operators and Routes: Havila Voyages Hurtigruten coastal route ro-pax delivered 2022 with LNG and battery propulsion.
Havila Castor X85. Ferries, Ro-Pax Operators and Routes: Havila Voyages coastal route ro-pax delivered 2022.
Havila Polaris X85. Ferries, Ro-Pax Operators and Routes: Havila Voyages coastal route ro-pax delivered 2023.
Havila Pollux X85. Ferries, Ro-Pax Operators and Routes: Havila Voyages coastal route ro-pax delivered 2023.
Havila Voyages X85. Ferries, Ro-Pax Operators and Routes: Norwegian operator competing with Hurtigruten on the Bergen to Kirkenes coastal route since 2021.
HAVKRAFT X57. Ocean Energy Beyond Wind: Norwegian wave energy developer that has tested oscillating water column designs at small scale.
Hawaii Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Hawaii Pilots Association serving the ports of Honolulu, Hilo, Kahului, Kawaihae, Nawiliwili, and Barbers Point under state of Hawaii license.
Hawaii Port Discharge Restrictions X69. EGCS Scrubbers, SCR and Marine Air Emissions: State-level restrictions on EGCS washwater discharge in Hawaiian waters.
Hawaiian Chieftain X128. Sail Training Ships and Tall Ship Associations: 1988 American steel topsail ketch, 31 m length, operated as a sail training and education ship on the US west coast until withdrawal in 2018.
Hawaiian monk seal X10. Marine Biology, Fisheries and Oceanography: *Neomonachus schauinslandi*, an endangered phocid endemic to Hawaii.
Hawaiki X122. Submarine Cable Laying, Repair Vessels and Operators: 15,000 km cable from Sydney to Oregon via American Samoa, built by TE SubCom and ready for service 2018, owned by BW Digital since 2022.
Hawaiki Cable X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: 15,000 km submarine cable connecting Australia, New Zealand, American Samoa, Hawaii, and the US mainland, in service since 2018.
Hawala E1. Maritime security, geopolitics and risk: Informal value transfer system relevant to sanctions/piracy ransom inquiry.
Hawke Cable Gland X96. Hull Integrity Monitoring and Strain Gauges: Brand of marine and hazardous area cable glands used on instrumentation enclosures.
Hawkeye 360 X74. AIS Data, Vessel Tracking and Maritime Intelligence: US radio frequency geolocation operator that detects and characterizes maritime emitters including AIS.
Hawksbill turtle X10. Marine Biology, Fisheries and Oceanography: *Eretmochelys imbricata*, a critically endangered tropical sea turtle.
Hawse F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Area at the bow where anchors are stowed and chains lead.
Hawse pipe X3. Ship Handling, Seamanship and Deck Vocabulary: Pipe through which the anchor cable passes.
Hawser X3. Ship Handling, Seamanship and Deck Vocabulary: Heavy rope or cable for mooring or towing.
Hawser-laid X3. Ship Handling, Seamanship and Deck Vocabulary: Rope laid up of three strands twisted right-handed.
Hay, Baled X1. Cargo Science, Commodities and Cargo Care: Self-heating Class 4.1 IMDG when not properly cured.
Hayama Marine X132. High-Speed Craft, Hydrofoils and Ferry Operators: Japanese coastal fast ferry operator running Boeing 929 Jetfoil and small catamarans.
Hayes, Bully (William Henry) X39. Pre-1900 Maritime History: Notorious nineteenth-century South Pacific blackbirder.
Hayward Tyler X63. Marine Auxiliary Machinery and Pumps: UK manufacturer of high-temperature feed and circulating pumps used in marine and offshore service.
Hazard Class X75. IMDG Code, Classes, Packing and Segregation: One of nine IMDG classes derived from the UN Recommendations on the Transport of Dangerous Goods.
Hazard Code X75. IMDG Code, Classes, Packing and Segregation: Combination of class and subsidiary risk used in some national systems, derived from IMDG entries.
Hazard Determination X13. Marine Salvage and Wreck Removal: Coastal state finding under Nairobi Article 6 that a wreck poses a hazard.
Hazard Identification Number X75. IMDG Code, Classes, Packing and Segregation: Kemler number used on ADR vehicle placards in Europe, not used in IMDG package marking.
Hazard Identification Workshop X109. Maritime Autonomous Surface Ships and MASS Code: A structured group activity used early in MASS development to enumerate hazards for the safety case.
Hazard Pictogram X75. IMDG Code, Classes, Packing and Segregation: Symbol on a class label, defined in IMDG 5.2.2.2 for each class.
Hazardous and Noxious Substances (HNS) X99. Marine Salvage Awards and SCOPIC: Cargoes whose escape would cause damage to the environment within the meaning of Article 1(d).
Hazardous and Noxious Substances investigation X163. Marine Accident Investigation Agencies and Landmark Inquiries: Investigation thread addressing carriage of chemicals and noxious liquids under MARPOL Annex II and the IBC Code, recurrent in tanker casualty reports.
Hazardous area classification C2. Ship operations, crewing and technical management: Zoning of areas containing flammable gases.
Hazardous Area Drawings X40. Tanker Vetting, SIRE and VIQ: The IEC 60092 hazardous-zone plans examined under VIQ Chapter 8.
Hazardous cargo X6. Container, Intermodal and Trade Codes: Cargo classified under the IMDG Code.
Hazardous Cargo Declaration X86. Port Agency, Husbandry and Disbursement: Declaration of dangerous goods under IMDG Code, lodged by the agent.
Hazardous Cargo Hold X75. IMDG Code, Classes, Packing and Segregation: Vessel hold designed and certified for the carriage of packaged dangerous goods.
Hazardous Cargo Salvage X60. Marine Salvage and Wreck Removal: Operations on vessels carrying IMDG Code dangerous goods, requiring specialized planning.
Hazardous Material Barge X103. US Inland Waterway Towing and Barge: A tank or hopper barge certificated to carry hazardous materials under 49 CFR and 46 CFR.
Hazardous Material List X118. Ship Recycling Yards, Beaches and Regulation: Annex 1 to HKC Regulation 4.1 prohibiting installation of asbestos, PFOS, ODS, TBT, and other listed substances on new ships.
Hazardous Material Storage Area X28. Ship Recycling and End-of-Life: Designated secure area at a recycling facility for asbestos, PCBs, and ODS.
Hazardous Material Survey X43. Marine Surveying and Warranty Surveying: An identification and inventory of asbestos, PCB, ozone-depleting substances, and other regulated materials, often supporting the IHM under the Hong Kong Convention.
Hazardous Material Threshold Concentration X50. Ship Recycling, Demolition and Hong Kong Convention: The percentage by weight above which a substance must be declared in the IHM, typically 0.1 percent for asbestos and similar restricted materials.
Hazardous Materials Inventory (IHM) B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: HKC/EU SRR mandated IHM Part I.
Hazardous Materials Manifest X36. Shipboard Medical, Telemedicine and Seafarer Health: Reference document used with MFAG during cargo incident response.
Hazardous Reaction X75. IMDG Code, Classes, Packing and Segregation: Reaction between two or more substances that could occur if segregation under IMDG 7.2 is not maintained.
Hazardous Stores Notification X86. Port Agency, Husbandry and Disbursement: Notification of dangerous stores on board for port authority records.
Hazardous Waste (Management and Transboundary Movement) Rules X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: India's national regulations implementing Basel Convention obligations and overlapping with ship recycling oversight.
Hazardous Waste Management Rules 2016 (India) X118. Ship Recycling Yards, Beaches and Regulation: Indian rules implementing Basel obligations and governing TSDF transfer of Alang yard waste.
Hazardous Waste Manifest X28. Ship Recycling and End-of-Life: Tracking document for hazardous materials leaving the yard for final disposal.
Haze X16. Nautical Science, Navigation and COLREGs: Suspension of dry particles reducing visibility to between 1 and 5 km.
HAZID X12. Maritime Casualties and Investigation: Hazard Identification workshop used in design and post-casualty review.
Hazmat C3. Logistics, freight forwarding and multimodal trade: Hazardous materials, regulated under IMDG and 49 CFR.
Hazmat Documentation X66. Port State Control and Regional MOUs: 01000 series, including Dangerous Goods Manifest under SOLAS VII.
HazMat Expert HME X28. Ship Recycling and End-of-Life: Qualified person who develops the IHM following IMO MEPC.269(68).
HAZMAT Inventory Survey X5. Marine Surveying and Inspection: Verification of Inventory of Hazardous Materials under HKC and EU SRR.
Hazmat Survey X141. Marine Salvage Industry and Wreck Removal Contractors: Inventory of hazardous materials aboard a wreck, required before crew cutting and recycling.
HAZMAT training X21. STCW Certificates, Crewing and Seafarer Welfare: IMDG Code familiarization for crew handling dangerous goods, complementing STCW.
HAZOP X82. Saturation Diving and Offshore Diving Operations: Hazard and operability study applied to diving system design.
HAZWOPER X126. Marine Oil Spill Response and OPRC Regimes: US OSHA 29 CFR 1910.120 training mandatory for oil spill responders.
HBIS X92. Marine Steel Suppliers and Shipbuilding Plate: Hebei Iron and Steel Group, Chinese state owned integrated steel producer.
HBK X96. Hull Integrity Monitoring and Strain Gauges: Hottinger Bruel and Kjaer, the combined measurement brand within Spectris encompassing HBM and Bruel and Kjaer product lines.
HBL X6. Container, Intermodal and Trade Codes: House bill of lading issued by an NVOCC or forwarder.
HBM X96. Hull Integrity Monitoring and Strain Gauges: Hottinger Baldwin Messtechnik, German measurement technology company, now part of HBK within Spectris.
HBM 1-LM11/120 X96. Hull Integrity Monitoring and Strain Gauges: HBM resistive strain gauge with 120 ohm nominal resistance from the LM series.
HBM 1-LY11-3/120 X96. Hull Integrity Monitoring and Strain Gauges: HBM single grid foil strain gauge with 3 mm grid and 120 ohm resistance.
HBM 1-LY18-3/120 X96. Hull Integrity Monitoring and Strain Gauges: HBM single grid foil strain gauge variant with 3 mm grid and 120 ohm resistance for general structural testing.
HBM MX1615B X96. Hull Integrity Monitoring and Strain Gauges: HBM QuantumX bridge amplifier module with 16 channels designed for strain gauge measurement.
HBM PMX X96. Hull Integrity Monitoring and Strain Gauges: HBM industrial measurement amplifier platform for permanent installations.
HBM QuantumX X96. Hull Integrity Monitoring and Strain Gauges: HBM modular data acquisition system family supporting strain, temperature, and voltage inputs.
HBMCI (Hellenic Bureau for Marine Casualties Investigation) X163. Marine Accident Investigation Agencies and Landmark Inquiries: See Greek Hellenic Bureau for Marine Casualties Investigation.
HBU (High-power Branching Unit) X122. Submarine Cable Laying, Repair Vessels and Operators: SubCom branching unit variant supporting higher line current for long-haul SDM systems.
HC-130 Hercules X80. Maritime Search and Rescue Coordination: Lockheed fixed wing aircraft operated by the US Coast Guard for long range SAR.
HC-130J Hercules X130. National Coast Guards and Cutter Fleets: USCG long-range surveillance aircraft, 22 airframes operated from Elizabeth City, Clearwater, Sacramento, Kodiak and Barbers Point.
HC-144 Ocean Sentry X130. National Coast Guards and Cutter Fleets: USCG medium-range surveillance aircraft based on CASA CN-235, 18 airframes.
HC-27J Spartan X130. National Coast Guards and Cutter Fleets: USCG medium-range maritime patrol aircraft, 14 ex-Air Force airframes operated from Sacramento and Elizabeth City.
HCA X31. Helicopter Operations on Ships: Helideck Certification Agency, UK independent helideck certifier.
HCFC-22 Inventory X50. Ship Recycling, Demolition and Hong Kong Convention: The IHM Part I record of R-22 refrigerant installations subject to Montreal Protocol phase-out.
HCG X80. Maritime Search and Rescue Coordination: Hellenic Coast Guard, the Greek maritime law enforcement and SAR service.
HCI Capital X49. Ship Finance, Leasing and Maritime Capital Markets: German emissions house active in KG shipping funds prior to the 2008 crisis.
HCl Solution X75. IMDG Code, Classes, Packing and Segregation: Hydrochloric acid solution, UN 1789, Class 8 corrosive.
HCM (High Performance Coding and Modulation) X68. Maritime Satcom and Telecommunications: VSAT enhancement enabling higher spectral efficiency under favorable conditions.
HCS X89. ECDIS and Bridge Equipment Makers: Heading Control System, the IMO term for an autopilot governed by IMO Resolution MSC.64(67) Annex 3.
HCU Hydraulic Cylinder Unit X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: ME-C and ME-B fuel injection actuator block containing fuel and exhaust valve servo cylinders, with fine filter renewal at 1,500-hour intervals.
HD Hyundai Heavy Industries X81. Project Cargo, Heavy-Lift and Module Carriers: South Korean shipbuilder constructing FPSOs, LNG carriers, FLNGs and heavy-lift conversions.
HD Hyundai Steel X92. Marine Steel Suppliers and Shipbuilding Plate: South Korean integrated steelmaker formed from the merger of Hyundai Steel and INI Steel, operating plants at Dangjin, Pohang, Suncheon, and Incheon.
HD work-class ROV X65. ROVs, AUVs, USVs and Marine Robotics: Schilling Robotics 150 horsepower hydraulic ROV widely used in deep water construction support.
HDB X73. Marine Hydrography, Charting and ENC: IHO Hydrographic Dictionary Database, the online derivative of S-32.
HDD X42. Offshore Wind Installation and Cable Lay: Horizontal Directional Drilling, trenchless method bringing export cables ashore beneath beaches and dunes.
HDG X89. ECDIS and Bridge Equipment Makers: NMEA sentence transmitting magnetic heading with deviation and variation.