Glossary

Maritime glossary, terms beginning with H

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

Showing 250 of 1949 terms (page 1 of 8).

H Clarkson & Co X161. Shipbroking, Freight Derivatives, and Baltic Indices: London shipbroker founded in 1852 that forms the historical core of Clarksons Platou.
H+H Engineering X69. EGCS Scrubbers, SCR and Marine Air Emissions: Supplier associated with SCR system engineering for medium-speed marine engines.
H1050E X169. Container Terminal Cranes, Yard Equipment, and Lashing: Hyster empty container handler with capacity for stacking empties up to nine high, part of the Big Truck range.
H1100XD-CH X169. Container Terminal Cranes, Yard Equipment, and Lashing: Hyster reach stacker for laden container handling with 45 ton capacity in the first row.
H17/28 (HiMSEN) X90. Marine Engine Specific Model Enumeration: Hyundai HiMSEN small four-stroke medium-speed marine engine with 170 millimeter bore and 280 millimeter stroke.
H2 X111. Methanol, Ammonia and Alternative Marine Fuels: Chemical formula for hydrogen, an alternative marine fuel with the highest LHV per mass of 120 MJ/kg.
H2 (Hydrogen) X34. Decarbonization, Alternative Fuels and Carbon Pricing: Lightest element; carbon-free fuel candidate stored as LH2 or CGH2.
H21/32 (HiMSEN) X90. Marine Engine Specific Model Enumeration: Hyundai HiMSEN four-stroke medium-speed marine engine with 210 millimeter bore and 320 millimeter stroke.
H225 LP X31. Helicopter Operations on Ships: Long Range Passenger variant of Eurocopter Super Puma, 11.0 t MTOW.
H2Mare X57. Ocean Energy Beyond Wind: German flagship research project on offshore green hydrogen production funded by the Federal Ministry of Education and Research.
H2S X75. IMDG Code, Classes, Packing and Segregation: Hydrogen sulfide, UN 1053, Class 2.3 toxic gas with Class 2.1 subsidiary risk.
H2S (Hydrogen sulphide) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Toxic gas in fuel vapor space; ISO 8217 limit 2 mg/kg in liquid phase per IP 570.
H2S exposure X36. Shipboard Medical, Telemedicine and Seafarer Health: Hydrogen sulfide poisoning treated with 100% oxygen and supportive care per MFAG Table 600 series.
H2S Scavenger X1. Cargo Science, Commodities and Cargo Care: Chemical added to crude or fuel oil to reduce hydrogen sulfide vapor.
H32/40 (HiMSEN) X90. Marine Engine Specific Model Enumeration: Hyundai HiMSEN four-stroke medium-speed marine engine with 320 millimeter bore and 400 millimeter stroke for main and auxiliary duty.
H35/40 (HiMSEN) X90. Marine Engine Specific Model Enumeration: Hyundai HiMSEN four-stroke medium-speed marine engine with 350 millimeter bore and 400 millimeter stroke.
H35DF (HiMSEN) X90. Marine Engine Specific Model Enumeration: Hyundai HiMSEN dual-fuel variant of the H35 platform for natural gas operation.
HAB (Harmful Algal Bloom) D3. Marine environmental science, pollution and conservation: Bloom producing toxins or harmful biomass impacts.
Haber-Bosch Process D6. Decarbonization, emissions and alternative fuels: Industrial synthesis of ammonia from nitrogen and hydrogen.
Haber-Bosch synthesis X34. Decarbonization, Alternative Fuels and Carbon Pricing: Industrial process combining H2 and N2 to make ammonia.
Habitability (Polar Code) X27. Polar Code, Ice Navigation and Polar Operations: Requirements for cold weather protection of accommodation spaces.
Habitat X82. Saturation Diving and Offshore Diving Operations: Welding or work enclosure isolating divers from open water.
Habitat Restoration D3. Marine environmental science, pollution and conservation: Active rehabilitation of degraded marine habitats.
Habitat-Forming Species X10. Marine Biology, Fisheries and Oceanography: Organisms that create three-dimensional structure, such as corals, seagrasses, and kelps.
Habitats Directive D3. Marine environmental science, pollution and conservation: EU directive establishing Natura 2000 network.
HACCP X26. Reefer Containers and Cold Chain Logistics: Hazard Analysis and Critical Control Points food safety management system, codified in Codex Alimentarius.
Hacktivism X139. Maritime Cybersecurity, OT Threats and Standards: Politically motivated cyber action; the Cyber Av3ngers group has targeted Israeli-linked shipping since 2023.
Hadal zone X10. Marine Biology, Fisheries and Oceanography: Ocean trenches, generally 6,000 to 11,000 m deep.
Haddock X10. Marine Biology, Fisheries and Oceanography: *Melanogrammus aeglefinus*, a North Atlantic gadid.
Haddock (Melanogrammus aeglefinus) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: North Atlantic gadid, with major MSC-certified stocks in the North Sea, Faroe Plateau and Barents Sea.
Hadley Cell D1. Physical and chemical oceanography and marine meteorology: Tropical atmospheric overturning circulation between the equator and around 30 degrees latitude.
Hadley v Baxendale (1854) 9 Exch 341 X143. Landmark Maritime Law Cases and Doctrines: Court of Exchequer foundation of contract damages, applied to maritime carriage in The Heron II.
Hadopelagic zone X10. Marine Biology, Fisheries and Oceanography: Open-ocean water column within hadal trenches.
Haemorrhage control X36. Shipboard Medical, Telemedicine and Seafarer Health: Direct pressure, tourniquet, and tranexamic acid where available.
HafenCity Cruise Terminal X164. Cruise Industry, Brands, Ship Classes, and Terminals: The Hamburg cruise terminal opened in 2004 in the HafenCity district near the Elbphilharmonie.
Hafnia Bunkering X72. Bunkering Hubs and Bunker Suppliers: Singapore based bunker supplier and trader within the Hafnia tanker group, formed from the legacy Vista Shipping franchise.
Hafnia Pool X135. Chemical Tanker Operators and IBC Code Cargoes: Singapore and Copenhagen-based product and chemical tanker pool, owned by Hafnia Limited and part-owned by BW Group, operating around 200 vessels across LR1, MR and Handy stainless segments.
Hagglunds Drives X94. Port Machinery and Quay Equipment Makers: Swedish radial-piston hydraulic motor brand owned by Bosch Rexroth and used on winches and deck machinery.
Hagland Shipping X81. Project Cargo, Heavy-Lift and Module Carriers: Norwegian short-sea operator running self-discharging bulk and MPP tonnage.
Hague (The) X66. Port State Control and Regional MOUs: City in the Netherlands hosting the Paris MOU Secretariat.
Hague Convention 1924 X114. Maritime Arbitration and Shipping Law Firms: International Convention for the Unification of Certain Rules of Law relating to Bills of Lading, the Hague Rules.
Hague Convention on Choice of Court Agreements X114. Maritime Arbitration and Shipping Law Firms: Treaty of 30 June 2005 affecting forum selection clauses in shipping contracts.
Hague Convention on Hostage-Taking X22. Piracy, Maritime Security and Armed Protection: 1979 International Convention against the Taking of Hostages.
Hague Convention VIII X77. Naval Mine Warfare and Mine Countermeasures: The 1907 international agreement on the laying of automatic submarine contact mines, including the prohibition of unanchored mines that do not become harmless within an hour.
Hague Memorandum X146. Port State Control Regimes, MoUs, and Inspection Systems: The 1978 memorandum between eight North Sea States, the precursor to the Paris MoU.
Hague Rules C1. Commercial shipping, chartering, economics and finance: 1924 international convention on carrier liability under bills of lading.
Hague Rules 1924 A5. Maritime Law, private and commercial: International Convention for the Unification of Certain Rules of Law Relating to Bills of Lading.
Hague-Visby Rules A5. Maritime Law, private and commercial: 1968 Visby Protocol and 1979 SDR Protocol to the Hague Rules.
Hague-Visby Rules 1968 X51. Maritime Arbitration, Law and BIMCO Clauses: The Protocol amending the Hague Rules, increasing per-package limits and clarifying carrier obligations.
Hague-Visby SDR Protocol 1979 X51. Maritime Arbitration, Law and BIMCO Clauses: The Protocol replacing gold franc package limits with limits expressed in Special Drawing Rights.
Hague-Visby Time Bar X155. Marine Surveying Practice and Cargo Inspection: The one year limitation period under Article III Rule 6 of the Hague-Visby Rules within which cargo claims must be brought or be time barred.
Haguro (DDG-180) X106. Naval Surface Combatants: Second JMSDF Maya-class Aegis destroyer, commissioned 2021.
Hai Hua X30. Tug Operations and Harbour Towage: Chinese tug operator active in coastal and harbor towage.
Hai Lu Tian Xia 1 X124. Dredging Industry and Reclamation Contractors: CCCC trailing hopper dredger of 27,000 m3 capacity.
Hai Soon Bunker X72. Bunkering Hubs and Bunker Suppliers: Singapore licensed bunker supplier operating a sizeable fleet of bunker tankers.
Hai Soon Petroleum X72. Bunkering Hubs and Bunker Suppliers: Group parent of Hai Soon Bunker, also active in physical fuel oil trading.
Hai Yang Shi You 286 X124. Dredging Industry and Reclamation Contractors: CNOOC pipelay-and-dredge vessel.
Haifa Bay X124. Dredging Industry and Reclamation Contractors: Israeli port deepening, awarded to international consortia.
Haifa Bayport X138. Global Container Terminal Operators and Port Equipment: Israeli deep-water terminal opened September 2021 by SIPG under a 25-year concession.
HAIN X65. ROVs, AUVs, USVs and Marine Robotics: Kongsberg Hydroacoustic Aided Inertial Navigation system that fuses INS with USBL or LBL observations.
Hainan X106. Naval Surface Combatants: Lead ship of the People's Liberation Army Navy Type 075 LHD class, commissioned 2021 as hull 31.
Hak Heavy Lift X167. Major Salvage Companies, Wreck Removals, and Equipment: Specialty arm of A Hak Industrial Services providing crane lift support to salvage and offshore projects.
Hake X10. Marine Biology, Fisheries and Oceanography: Members of the genera *Merluccius* and *Urophycis*, important demersal fishery resources.
Hakvoort X125. Superyacht Industry, Builders and Brokers: Monnickendam, Netherlands family yard founded 1919, builder of steel displacement yachts to 67 m.
Hakvoort Shipyard X156. Superyacht Industry, Builders, and Yacht Charter Market: Dutch builder at Monnickendam, founded 1919, producing custom steel and aluminum displacement motor yachts.
HAL Pinnacle Class X164. Cruise Industry, Brands, Ship Classes, and Terminals: Holland America Line's largest class, including Koningsdam, Nieuw Statendam, and Rotterdam.
Hala B Abandonment X154. Maritime Welfare, Seafarer Charities, and MLC Rights: 2014 abandonment case in the UAE that exposed gaps later addressed by the MLC 2014 financial-security amendment.
Halal Provisioning X120. Marine Catering, Provisions and Ship Chandlers: Certified meat supply category required for Gulf and Indian Subcontinent crew, JAKIM and MUI commonly accepted certifiers.
Halden X91. Submarines and Submarine Cable Systems: Norwegian town hosting Nexans submarine cable manufacturing facilities.
Hales Trophy X132. High-Speed Craft, Hydrofoils and Ferry Operators: Blue Riband trophy for fastest commercial transatlantic crossing, held by Cat-Link V at 41.284 knots from 1998.
Half ahead X3. Ship Handling, Seamanship and Deck Vocabulary: Engine order for moderate forward speed.
Half astern X3. Ship Handling, Seamanship and Deck Vocabulary: Engine order for moderate reverse speed.
Half Bridge Configuration X96. Hull Integrity Monitoring and Strain Gauges: Wheatstone bridge arrangement with two active strain gauges providing bending or temperature compensated measurements.
Half convergency X16. Nautical Science, Navigation and COLREGs: Half the difference in longitude between two points, used in radio bearings.
Half convergency correction B3. Nautical Science: Correction in great-circle bearings to chart.
Half Decker X87. Fishing Vessels and Fisheries Management: Small fishing vessel with partial deck coverage, common in inshore coastal fleets.
Half Height Container X83. ISO Container Manufacturing and Leasing: Open-top container at half the height of a 20-foot box, used for dense cargoes such as ore.
Half Moon X39. Pre-1900 Maritime History: The Dutch East India Company yacht in which Henry Hudson explored the river that bears his name in September 1609.
Half Moon Cay X24. Cruise, Passenger Ship and Ferry Operations: Holland America Line private island in the Bahamas.
Half Moon Island X97. Polar Expedition Cruise and IAATO Operations: South Shetland Islands landing site with Chinstrap penguin colonies and Argentine Camara Station.
Half-Beak X10. Marine Biology, Fisheries and Oceanography: Surface-dwelling fish of the family Hemiramphidae.
Half-block model B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Yard wooden model historically used for fairing.
Half-breadth plan B1. Naval Architecture: Top view of waterlines, half-breadths shown.
Half-Cell X100. Marine Cathodic Protection and Anodes: A common term for a reference electrode used in CP potential measurements.
Half-hitch F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Simple knot used as the basis of many compound knots.
Half-Life of Chlorine X41. Cruise Ship Public Health and VSP/USPH: Time over which free chlorine concentration falls by half, influencing tank turnover and residual planning.
Halfen Channel X14. Offshore Oil and Gas Marine Operations: Cast-in anchor channel used for offshore equipment fixing.
Haliade-X X42. Offshore Wind Installation and Cable Lay: GE Vernova offshore wind turbine platform deployed at Dogger Bank A and Vineyard Wind 1.
Halibut X10. Marine Biology, Fisheries and Oceanography: Large flatfish of the genus *Hippoglossus*.
Halibut, Atlantic (Hippoglossus hippoglossus) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Long-lived flatfish, with the Norwegian, Canadian and US fisheries small but high-value.
Halibut, Pacific (Hippoglossus stenolepis) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Managed by the International Pacific Halibut Commission (IPHC).
Halifax X85. Ferries, Ro-Pax Operators and Routes: Nova Scotian port served historically by Bay Ferries CAT to Portland and Yarmouth.
Halifax Cable Landing X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Major North Atlantic cable landing site in Nova Scotia hosting EXA, Hibernia Express, and Greenland Connect endings.
Halifax class X11. Naval Vessels, Warship Systems and Naval Architecture: Royal Canadian Navy patrol frigate with SMART-S Mk 2.
Halifax Explosion F1. Maritime History: 1917 collision and detonation of the munitions ship Mont-Blanc in Halifax Harbour.
Halifax Pilots X32. Marine Pilotage and Pilot Operations: Atlantic Pilotage Authority pilots serving the Port of Halifax, Nova Scotia.
Halifax Wind X42. Offshore Wind Installation and Cable Lay: Reference Canadian offshore wind early stage proposal.
Hall Anchor X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral: Original stockless anchor pattern designed by William Hall, the archetype against which holding-power factors of HHP anchors are compared.
Halley VI X133. Polar Research Vessels and Polar Code Regimes: BAS modular Antarctic research station, eight modules on hydraulic skis, opened 2013.
Halmstad University Maritime X121. Maritime Education, Academies and Universities: Swedish university with shipping and logistics offerings, ancillary to Chalmers and Kalmar.
Halo (optical) X16. Nautical Science, Navigation and COLREGs: Ring around the Sun or Moon caused by ice crystals.
Halo 20+ X89. ECDIS and Bridge Equipment Makers: Simrad solid state pulse compression radar for the recreational and light commercial market.
Halo 2006 X89. ECDIS and Bridge Equipment Makers: 6 foot open array solid state radar from Simrad Yachting.
Halo 24 X89. ECDIS and Bridge Equipment Makers: Simrad 24 inch dome solid state radar with 60 RPM bird mode.
Halo 3006 X89. ECDIS and Bridge Equipment Makers: 6 foot open array solid state radar with higher transmit power from Simrad.
Halo Radar X109. Maritime Autonomous Surface Ships and MASS Code: The Simrad branded pulse compression solid state radar product line used in commercial and autonomous installations.
Halocarbon Tracer X126. Marine Oil Spill Response and OPRC Regimes: Optional addition to dispersant for tracking subsurface plumes (research only, not operational).
Halocarbons X69. EGCS Scrubbers, SCR and Marine Air Emissions: Refrigerant gases regulated separately under MARPOL Annex VI Reg 12.
Halocline D1. Physical and chemical oceanography and marine meteorology: Vertical layer with a strong salinity gradient.
Halocline Layer (Arctic) D5. Coastal processes, sea-level, cryosphere and ocean observation science: Strong Arctic salinity gradient insulating sea ice from warmer deep water.
Halogen X41. Cruise Ship Public Health and VSP/USPH: Generic term in VSP usage covering chlorine, bromine, and related disinfectants.
Halogen Analyzer X41. Cruise Ship Public Health and VSP/USPH: Continuous monitor measuring free residual at the bunker manifold, distribution loop, and recreational water systems.
Halogen Test Kit X41. Cruise Ship Public Health and VSP/USPH: Portable DPD-based kit used by ship staff and inspectors to verify residual at sample points.
Halogenated Compound D3. Marine environmental science, pollution and conservation: Organic compound containing halogens, often persistent.
Halogenated Hydrocarbon X75. IMDG Code, Classes, Packing and Segregation: Family including UN 1846 carbon tetrachloride and UN 1888 chloroform under Class 6.1.
Halon ban X170. SOLAS 1974 Convention: Chapter-by-Chapter Glossary: SOLAS II-2/10.4.1.5 prohibits new installation of halon fire-extinguishing systems on all ships from 1 October 1994.
Halon Extinguishing System X75. IMDG Code, Classes, Packing and Segregation: Fire suppression installation phased out for new construction but historical IMDG fire schedules reference halon use.
Halon Inventory X50. Ship Recycling, Demolition and Hong Kong Convention: The IHM Part I record of Halon 1211 and 1301 fire suppression installations, controlled under the Montreal Protocol and HKC Annex 1.
Halong Shipyard X113. Drydock and Ship Repair Yards: Vietnamese shipyard in Hạ Long Bay historically part of the Vinashin group and active in bulker and special vessel construction.
Halons X28. Ship Recycling and End-of-Life: Class I ODS in fire-fighting systems regulated under the Montreal Protocol, listed in IHM Table A.
Halophyte X10. Marine Biology, Fisheries and Oceanography: Salt-tolerant plant of saline habitats such as salt marshes.
Halter Marine X58. Shipbuilding Yards and Construction: US shipbuilder at Pascagoula, Mississippi, building Coast Guard polar security cutters.
Halul Island X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Qatari oil storage and STS point used for incidental bunker operations.
Halul Offshore Services X137. Harbour Tugs, Towage Operators and Tug Builders: Qatar-based operator with harbour and offshore tug fleet.
Halve Maen (replica) X128. Sail Training Ships and Tall Ship Associations: 1989 American replica of Henry Hudson's 1609 VOC jacht, 25 m length, originally homeported on the Hudson River, used for educational sail.
Halyard F4. Recreational Boating, Yachting and Sport: Line used to hoist a sail or yard.
HAM Cryogenica X110. LNG Bunkering Infrastructure and Vessels: Spanish operator providing truck-to-ship LNG bunkering services at Algeciras and other Iberian ports.
Hamad Port X138. Global Container Terminal Operators and Port Equipment: Qatar's principal container port commissioned 2016 by Mwani Qatar, operated by QTerminals.
Hamann X63. Marine Auxiliary Machinery and Pumps: German manufacturer of marine sewage treatment plants, now part of Evac Group.
Hamann HL-CONT X63. Marine Auxiliary Machinery and Pumps: Continuous-flow sewage treatment plant from Hamann.
Hambantota X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Sri Lankan deepwater port leased to China Merchants Port Holdings, with limited bunker offering relative to Colombo.
Hambantota International Port X138. Global Container Terminal Operators and Port Equipment: Sri Lankan port leased to China Merchants Port Holdings in 2017 under a 99-year concession.
Hamble River Sailing Club F4. Recreational Boating, Yachting and Sport: Solent area sailing club.
Hamburg X64. Cruise Industry Operators, Brands and Ships: German cruise homeport on the Elbe and base for Hapag-Lloyd Cruises.
Hamburg Bunker Service X72. Bunkering Hubs and Bunker Suppliers: Bunker supply at the Port of Hamburg by Bomin, Mabanaft, Shell, and TotalEnergies.
Hamburg Coffee Trade X136. Reefer Vessels and Cool Chain Operators: Centuries-old green coffee trading hub at Hamburg, with arabica and robusta beans moving in reefer containers from origin to Speicherstadt and warehousing in Hafencity.
Hamburg Commercial Bank X49. Ship Finance, Leasing and Maritime Capital Markets: Successor to HSH Nordbank following its 2018 privatization, retaining shipping lending activities.
Hamburg Convention X80. Maritime Search and Rescue Coordination: Informal name for the 1979 International Convention on Maritime Search and Rescue.
Hamburg Court of Appeal X114. Maritime Arbitration and Shipping Law Firms: Hanseatic Oberlandesgericht hearing arbitration challenges in shipping disputes.
Hamburg Cruise Center X164. Cruise Industry, Brands, Ship Classes, and Terminals: The operator of three Hamburg cruise terminals at HafenCity, Steinwerder, and Altona.
Hamburg HHLA X138. Global Container Terminal Operators and Port Equipment: Hamburger Hafen und Logistik AG, listed German port operator of CTA Altenwerder, CTB Burchardkai and CTT Tollerort.
Hamburg International Maritime Museum Lecture Series X119. Maritime Conferences, Trade Shows and Awards: Year-round program of public lectures at HIMM.
Hamburg Pilot X32. Marine Pilotage and Pilot Operations: Elbe pilot taking ships up to Hamburg from Cuxhaven.
Hamburg Port Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Hafenlotsen handling vessels within the Port of Hamburg downstream of the Koehlbrandbridge boundary.
Hamburg Provisioning X120. Marine Catering, Provisions and Ship Chandlers: Major North Range hub with Inter Marine Supply and others servicing container, tanker, and bulker calls.
Hamburg Rules C1. Commercial shipping, chartering, economics and finance: 1978 UN Convention on Carriage of Goods by Sea.
Hamburg Rules 1978 A5. Maritime Law, private and commercial: UN Convention on the Carriage of Goods by Sea, in force 1992; limited adoption.
Hamburg Speicherstadt F2. Maritime Culture, Heritage, Archaeology, Art and Museums: UNESCO-listed warehouse district associated with shipping trade.
Hamburg Sud Agency X86. Port Agency, Husbandry and Disbursement: Agency activity for Hamburg Sud, now part of the Maersk group.
Hamburg Sud Reefer X136. Reefer Vessels and Cool Chain Operators: Historic German reefer specialist now part of Maersk, with strong Latin America to Europe perishables franchise.
Hamburg University of Applied Sciences X121. Maritime Education, Academies and Universities: HAW Hamburg, founded 1970 with roots to 1907, hosts the Department of Maritime Studies in Bergedorf and the Hamburg Ship Model Basin links via HSVA.
Hamilton X35. Yacht and Superyacht Industry: Bermuda capital and seat of the Bermuda Shipping and Maritime Authority.
Hamilton Marine Group X137. Harbour Tugs, Towage Operators and Tug Builders: Niagara-region tug operator on the Great Lakes.
Hamilton-Trent X124. Dredging Industry and Reclamation Contractors: Canadian dredging firm absorbed into McKeil Marine.
Hamilton, USCGC (WMSL-753) X130. National Coast Guards and Cutter Fleets: Fourth Legend-class National Security Cutter, namesake of Alexander Hamilton, commissioned 2014, homeported Charleston, South Carolina.
HamiltonJet waterjet X38. Propellers, Stern Gear and Shaft Lines: Family of waterjets from CWF Hamilton (New Zealand), used on fast craft as an alternative to propellers.
Hamina class X11. Naval Vessels, Warship Systems and Naval Architecture: Finnish Navy fast attack craft with RBS-15 and Umkhonto.
Hammar H20 X95. GMDSS Equipment and Survival Craft Communications: Hydrostatic release unit manufactured by C. M. Hammar of Sweden, releasing an EPIRB or VDR capsule when submerged to approximately four meters depth.
Hammelmann X88. Marine Surface Preparation and Coatings Application: German manufacturer of high-pressure and ultra-high-pressure plunger pumps used in water jetting and hydrodemolition.
Hammer X42. Offshore Wind Installation and Cable Lay: Hydraulic or vibratory pile driving device installing monopiles and jacket pin piles.
Hammer energy X42. Offshore Wind Installation and Cable Lay: Per blow kinetic energy of an offshore pile driving hammer, with the IHC S-2500 rated at 2,500 kJ.
Hammer Lock X9. Cargo Securing, Lashing and Stability Vocabulary: Connector for joining chains of different sizes.
Hammerfest Strøm X57. Ocean Energy Beyond Wind: Original Norwegian tidal stream developer that became Andritz Hydro Hammerfest.
Hammerhead crane X15. Ports, Terminals and Stevedoring: historic cantilever shipyard crane, e.g., Stobcross Crane Glasgow.
Hammitt Erosion Model X54. Naval Architecture Software and IACS Rules: Empirical cavitation erosion estimator used in propeller cavitation studies.
Hampidjan Group X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Icelandic trawl-twine and rope manufacturer, supplier of Dyneema twine used in many of the world's largest pelagic trawls.
Hampton Roads Cable Landing X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Virginia Beach landing serving MAREA, Dunant, and BRUSA cable systems.
Hamworthy X63. Marine Auxiliary Machinery and Pumps: UK marine equipment manufacturer (Hamworthy Marine, later Wartsila) producing OWS, STP, compressors, and pumps.
Hamworthy 2H X63. Marine Auxiliary Machinery and Pumps: Two-stage reciprocating air compressor formerly built by Hamworthy.
Hamworthy Krystallon X69. EGCS Scrubbers, SCR and Marine Air Emissions: Predecessor brand acquired into Wartsila Exhaust Gas Cleaning portfolio.
Hamworthy MGPS X100. Marine Cathodic Protection and Anodes: A marine growth prevention system brand integrated within marine engineering packages.
Hamworthy Moss reliquefaction B2. Marine Engineering: Reliquefaction plant for LNG carriers.
Hamworthy ST-X X63. Marine Auxiliary Machinery and Pumps: Biological sewage treatment plant series widely fitted across merchant tonnage.
Hamworthy Super Trident X63. Marine Auxiliary Machinery and Pumps: Sewage treatment plant range from Hamworthy.
Han Jiang X124. Dredging Industry and Reclamation Contractors: CCCC CSD active in domestic port works.
Hancom Marine X65. ROVs, AUVs, USVs and Marine Robotics: South Korean shipbuilder that produces small unmanned surface vessels for coastal survey and patrol.
Hand X3. Ship Handling, Seamanship and Deck Vocabulary: Member of the crew; furl a sail.
Hand Brake X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral: Manually operated band brake on the windlass gypsy used for controlling chain veer and for emergency holding.
Hand cleaning X45. Marine Paints, Coatings and Antifouling: Surface preparation by hand wire brush or scraper, designated St 2 or St 3 in ISO 8501-1.
Hand Held Refractometer Check X5. Marine Surveying and Inspection: Quality check on cargo and tank residue samples.
Hand Held VHF X80. Maritime Search and Rescue Coordination: Portable VHF survival craft transceiver carried in lifeboats.
Hand Lead F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Sounding lead historically used to measure depth.
Hand Line X87. Fishing Vessels and Fisheries Management: Single fishing line operated by hand, used commercially for high value species such as bluefin tuna in some artisanal fisheries.
Hand Off X80. Maritime Search and Rescue Coordination: Transfer of case coordination between adjacent RCCs.
Hand priming pump X19. Engine Room Watchkeeping and UMS Operations: Manual pump fitted on lube oil and fuel systems for initial priming.
Hand sanitizer dispensers X36. Shipboard Medical, Telemedicine and Seafarer Health: Standard infection control fixtures in mess, galley, and accommodation passageways.
Hand sanitizer station X24. Cruise, Passenger Ship and Ferry Operations: Mandatory CDC VSP fixture at every dining and embarkation point.
Hand Sink X41. Cruise Ship Public Health and VSP/USPH: Dedicated handwashing fixture supplied with hot and cold water through a mixing valve and stocked with soap and towels.
Hand Soap (Galley) X120. Marine Catering, Provisions and Ship Chandlers: IMPA 550221 antibacterial liquid soap, 5 L canister.
Hand Tight X9. Cargo Securing, Lashing and Stability Vocabulary: Initial pre-tension applied without mechanical aid.
Hand Tool Cleaning X88. Marine Surface Preparation and Coatings Application: Surface preparation by manual scraping, chipping, and wire brushing in accordance with SSPC-SP 2 and ISO 8501-1 St 2.
Hand winch X15. Ports, Terminals and Stevedoring: manual mooring winch on small vessels.
Hand-over notes C2. Ship operations, crewing and technical management: Notes between off-going and on-coming officers.
Hand-over pilot X32. Marine Pilotage and Pilot Operations: Pilot relieving another mid-transit at a defined change point.
Hand-over protocol B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Set of documents at delivery.
Hand-over-hand X3. Ship Handling, Seamanship and Deck Vocabulary: Hauling rapidly by alternate use of the hands.
Hand-somely X3. Ship Handling, Seamanship and Deck Vocabulary: Slowly and carefully.
Hand-steered lock X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: A small heritage lock such as those on the Canal du Midi or French northern canals where gates are still cranked by hand.
Handheld Satellite Phone X68. Maritime Satcom and Telecommunications: Portable voice terminal such as the Iridium 9555 used for shipboard or lifeboat communications.
Handicap Racing X84. Yacht Racing, Regattas and Sailing Governance: A format in which yachts of different sizes race together and corrected time is calculated under a rating rule.
Handling charge X6. Container, Intermodal and Trade Codes: Generic surcharge for moving cargo at a CFS or warehouse.
Handling Label X75. IMDG Code, Classes, Packing and Segregation: Non hazard label such as orientation arrows, cargo aircraft only or this way up.
Handling Procedure for Hazardous Materials X28. Ship Recycling and End-of-Life: Documented yard procedure required under HKC and EU SRR.
Handover X68. Maritime Satcom and Telecommunications: Transfer of an active connection from one satellite or beam to another.
Handover Inspection X83. ISO Container Manufacturing and Leasing: Inspection at on-hire or off-hire between lessor and lessee.
Handy billy X3. Ship Handling, Seamanship and Deck Vocabulary: Small portable tackle.
Handygas X56. LNG/LPG Carriers and IGC Code: LPG carrier size class of approximately 13,000 to 22,000 cubic meters serving regional fully refrigerated trades.
Handymax C1. Commercial shipping, chartering, economics and finance: Dry bulk segment of about 40,000 to 50,000 dwt.
Handymax/Supramax B5. Ship Types and Individual Vessels: 40,000-65,000 DWT bulker.
Handysize C1. Commercial shipping, chartering, economics and finance: Dry bulk segment of about 10,000 to 40,000 dwt.
Handysize bulker B5. Ship Types and Individual Vessels: 10,000-40,000 DWT bulker.
Handysize LPG carrier X134. LNG and LPG Carrier Operators and Containment Systems: Vessel of 15,000 to 25,000 cbm capacity, often semi-refrigerated for ammonia, propane, butane and petrochemical gases.
Hang Jun 5001 X124. Dredging Industry and Reclamation Contractors: CCCC CSD with 6,000 m3/h discharge capacity.
Hang-off X14. Offshore Oil and Gas Marine Operations: Temporary stowage of riser or drillstring on rig.
Hangar X11. Naval Vessels, Warship Systems and Naval Architecture: Enclosed deck for aircraft maintenance and stowage.
Hanjin episode C3. Logistics, freight forwarding and multimodal trade: 2016 carrier insolvency that reshaped liner credit policy.
Hanjin Shipping X49. Ship Finance, Leasing and Maritime Capital Markets: South Korean container line whose 2016 bankruptcy reshaped liner finance and counterparty risk.
Hanjin Subic X58. Shipbuilding Yards and Construction: Former Philippine yard at Subic Bay built by Hanjin Heavy Industries and bankrupt in 2019.
Hank X3. Ship Handling, Seamanship and Deck Vocabulary: Snap-hook securing a sail to a stay.
Hannibal X103. US Inland Waterway Towing and Barge: A Missouri river town in the L&D 22 area on the Upper Mississippi River.
Hannibal Locks and Dam X103. US Inland Waterway Towing and Barge: An Ohio River navigation structure in Ohio, distinct from the Mississippi town.
Hannover Re X117. Marine Insurance Markets, Captives and Reinsurance: Hannover Rück SE, a German reinsurer in the top five global rankings with a marine and aviation segment.
Hans Jensen Lubricators X61. Marine Lubricants and Cylinder Oils: Danish manufacturer of cylinder lubrication systems including the Swirl Injection Principle and Pulse Lubrication System.
Hans Jensen SIP X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: Swirl Injection Principle developed by Hans Jensen Lubricators, distributing cylinder oil through angled nozzles to coat the liner via scavenge air swirl.
Hansa Heavy Lift X81. Project Cargo, Heavy-Lift and Module Carriers: Hamburg-based heavy-lift operator that emerged from the Beluga remnants in 2011 and entered insolvency in 2018.
Hansa Stavanger X127. Maritime Security, Anti-Piracy and PMSCs: German-owned, Antigua-and-Barbuda-flagged container ship hijacked 4 April 2009 off Somalia, released 3 August 2009 for approximately USD 2.75 million.
Hansa Tankers X93. IBC Code and Chemical Tanker Operations: German chemical and product tanker operator managing a fleet of vessels in European and intercontinental trades.
Hansa Treuhand X49. Ship Finance, Leasing and Maritime Capital Markets: German emissions house that arranged numerous KG ship funds during the boom.
Hansadok X113. Drydock and Ship Repair Yards: Repair drydock in the Port of Antwerp used historically by various Antwerp ship repair operators.
Hanseatic Inspiration X64. Cruise Industry Operators, Brands and Ships: Hapag-Lloyd Cruises expedition vessel delivered in 2019.
Hanseatic League F1. Maritime History: Medieval North European trading confederation centered on Lubeck.
Hanseatic Marine Catering X120. Marine Catering, Provisions and Ship Chandlers: Hamburg based catering management company with European fleet focus.
Hanseatic Museum, Bergen F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Norwegian museum at Bryggen.
Hanseatic Nature X64. Cruise Industry Operators, Brands and Ships: Hapag-Lloyd Cruises expedition vessel delivered in 2019.
Hanseatic P&I Service X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets: Hamburg-based managers of fixed-premium P&I cover.
Hanseatic Spirit X64. Cruise Industry Operators, Brands and Ships: Hapag-Lloyd Cruises expedition vessel delivered in 2021.
Hansewerft X128. Sail Training Ships and Tall Ship Associations: German shipyards that built or rebuilt several heritage tall ships and youth sail training schooners in the Baltic.
Hanwha Ocean X29. Ship Sale and Purchase, Management Contracts and Valuation: Korean shipbuilder, former Daewoo Shipbuilding and Marine Engineering.
Hanwha Ocean Ammonia Bunker Vessel X111. Methanol, Ammonia and Alternative Marine Fuels: Korean ammonia bunker barge program announced for delivery from 2025.
Hanwha Ocean Ammonia VLCC X140. Ammonia as Marine Fuel and Hydrogen Shipping: Hanwha AIP for 300,000 dwt NH3 dual-fuel crude tanker.
Hapag-Lloyd X6. Container, Intermodal and Trade Codes: German container carrier in the Gemini cooperation.
Hapag-Lloyd Agency X86. Port Agency, Husbandry and Disbursement: In-house and contracted agency network of Hapag-Lloyd at calling ports.
Hapag-Lloyd Cruises X64. Cruise Industry Operators, Brands and Ships: German luxury and expedition cruise brand owned by TUI AG and operated under the TUI Cruises umbrella.
Hapag-Lloyd Feeder X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: The intra-Mediterranean and intra-Baltic short sea feeder services of Hapag-Lloyd, since 2023 expanded after the SAAM Towage acquisition.
Hapag-Lloyd LIVE Trace X26. Reefer Containers and Cold Chain Logistics: Hapag-Lloyd online reefer tracking and exception monitoring platform.
Hapag-Lloyd Maritime Training F3. Seafaring Life, Education, Professions and Institutions: In-house training programs of Hamburg-based liner operator.
Hapag-Lloyd Password Reset 2017 X107. Maritime Cybersecurity and OT Security: Precautionary credential reset action taken by Hapag-Lloyd following observed cyber activity in 2017.
Hapag-Lloyd Phishing 2024 X25. Maritime Cybersecurity, OT and IT: Hamburg liner reported phishing attempts impersonating its booking and quotation systems in 2024.
Hapag-Lloyd terminal X15. Ports, Terminals and Stevedoring: equity stake terminals in Wilhelmshaven, JadeWeserPort, and others.
Hapag-Lloyd Triton Reefer X136. Reefer Vessels and Cool Chain Operators: Hapag-Lloyd reefer business unit named for the Triton brand, deploying around 100,000 reefer TEU across global services.