Glossary

Maritime glossary, terms beginning with H (page 7)

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

Showing 250 of 1949 terms (page 7 of 8).

Howe Robinson Partners (HRP) X29. Ship Sale and Purchase, Management Contracts and Valuation: London headquartered S&P and chartering broker.
Hoy F1. Maritime History: Small English coasting vessel of the seventeenth and eighteenth centuries.
Hoyer Global X83. ISO Container Manufacturing and Leasing: German operator of one of the largest fleets of ISO tank containers for chemicals and gases.
HP140 X92. Marine Steel Suppliers and Shipbuilding Plate: Bulb flat profile with 140 mm web depth used as longitudinal stiffener in hull plating.
HP200 X92. Marine Steel Suppliers and Shipbuilding Plate: Bulb flat profile with 200 mm web depth used as stiffener in hull and deck structures.
HP240 X92. Marine Steel Suppliers and Shipbuilding Plate: Bulb flat profile with 240 mm web depth used as longitudinal stiffener in heavy hull structures.
HP280 X92. Marine Steel Suppliers and Shipbuilding Plate: Bulb flat profile with 280 mm web depth used in primary hull stiffening.
HP320 X92. Marine Steel Suppliers and Shipbuilding Plate: Bulb flat profile with 320 mm web depth used in primary hull and bulkhead stiffening.
HP380 X92. Marine Steel Suppliers and Shipbuilding Plate: Bulb flat profile with 380 mm web depth used in heavy primary stiffening.
HP430 X92. Marine Steel Suppliers and Shipbuilding Plate: Bulb flat profile with 430 mm web depth used in heavy hull longitudinal stiffening.
HPCL Vetting X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: Hindustan Petroleum Corporation Limited's marine vetting team screening tankers for Mumbai, Visakhapatnam, and Kochi terminals.
HPH Trust X138. Global Container Terminal Operators and Port Equipment: Singapore-listed trust holding Hutchison's deep-water Hong Kong and Yantian assets, restructured 2024.
HPHT X14. Offshore Oil and Gas Marine Operations: High pressure high temperature wells; specialized BOP and tree requirements.
HPNS X82. Saturation Diving and Offshore Diving Operations: High Pressure Nervous Syndrome.
HPU X65. ROVs, AUVs, USVs and Marine Robotics: Hydraulic power unit on a work-class ROV that supplies pressurized oil to manipulators, thrusters and tooling.
HQ X6. Container, Intermodal and Trade Codes: High Cube, alternative abbreviation.
HR X6. Container, Intermodal and Trade Codes: Hard-top container, code suffix; roof removed by crane.
HRA X22. Piracy, Maritime Security and Armed Protection: High Risk Area, formally reduced and renamed Voluntary Reporting Area in the Indian Ocean from 1 January 2023.
HRA (High Risk Area) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: A BMP-defined geography whose transit is subject to additional vetting scrutiny.
HRA (Indian Ocean) E1. Maritime security, geopolitics and risk: Formerly delimited area for BMP application.
HRA-IO X127. Maritime Security, Anti-Piracy and PMSCs: High Risk Area Indian Ocean, removed effective 1 January 2023 following industry consultation reflecting collapse in Somali piracy.
HRS X7. Flag State, Port State Control and Detention Vocabulary: High Risk Ship, see entry above.
HRU X80. Maritime Search and Rescue Coordination: Hydrostatic Release Unit releasing the float free EPIRB at depth.
HS chapter X6. Container, Intermodal and Trade Codes: Two-digit top level of the Harmonized System, 01 through 97.
HS code C3. Logistics, freight forwarding and multimodal trade: Harmonized System tariff classification.
HS Code Cargo Verification X60. Marine Salvage and Wreck Removal: Reconciliation of declared cargo descriptions during salvage to support general average and customs clearance.
HS heading X6. Container, Intermodal and Trade Codes: Four-digit subdivision within an HS chapter.
HSBC X29. Ship Sale and Purchase, Management Contracts and Valuation: Bank used as escrow agent and ship finance lender.
HSC X6. Container, Intermodal and Trade Codes: Harmonized System Convention.
HSC Code X24. Cruise, Passenger Ship and Ferry Operations: International Code of Safety for High-Speed Craft, MSC.97(73), 2000.
HSC Code 1994 X132. High-Speed Craft, Hydrofoils and Ferry Operators: International Code of Safety for High-Speed Craft adopted by Resolution MSC.36(63), in force from 1 January 1996.
HSC Code 2000 X132. High-Speed Craft, Hydrofoils and Ferry Operators: Revised code adopted by Resolution MSC.97(73), applicable to HSCs built on or after 1 July 2002.
HSC Safety Certificate A2. Maritime safety legislation: SOLAS and its codes: Required for high-speed craft.
HSC Simulator X144. Bridge Simulators, Engine Room Simulators, and Maritime Training Equipment: High-Speed Craft simulator required under HSC Code Chapter 18 for craft over 30 knots.
HSCS (Hong Kong-Guam Submarine Cable) X91. Submarines and Submarine Cable Systems: Trans-Pacific cable system NEC-built segment associated with 2020 service entry.
HSD (High Speed Data) X68. Maritime Satcom and Telecommunications: Legacy Inmarsat Fleet streaming IP service rated at fixed data rates such as 64 or 128 kbps.
HSE X14. Offshore Oil and Gas Marine Operations: UK Health and Safety Executive; offshore safety regulator UKCS.
HSE ACoP L103 X82. Saturation Diving and Offshore Diving Operations: Approved Code of Practice for commercial diving offshore.
HSE ACoP L104 X82. Saturation Diving and Offshore Diving Operations: Approved Code of Practice for inland and inshore commercial diving.
HSE ACoP L105 X82. Saturation Diving and Offshore Diving Operations: Approved Code of Practice for scientific and archaeological diving.
HSE ACoP L107 X82. Saturation Diving and Offshore Diving Operations: Approved Code of Practice for media diving.
HSE case X42. Offshore Wind Installation and Cable Lay: Vessel and project specific safety case documenting hazard identification and risk controls.
HSE Cyber Briefing X48. Maritime Cybersecurity: Inclusion of cyber safety in shipboard health, safety, and environment briefings.
HSE familiarization X21. STCW Certificates, Crewing and Seafarer Welfare: Company specific Health, Safety, and Environment induction supplementing STCW.
HSE Health Service Executive Ireland X25. Maritime Cybersecurity, OT and IT: Hit by Conti ransomware in May 2021, illustrative for incident response cost.
HSE management plan X59. Offshore Wind O&M, CTVs and SOVs: Project specific document governing health, safety, and environmental controls during wind farm O&M.
HSE Risk Register X109. Maritime Autonomous Surface Ships and MASS Code: The health, safety, and environment risk record maintained for a MASS trial program.
HSFO X61. Marine Lubricants and Cylinder Oils: High sulfur fuel oil with sulfur content above 0.5 percent, permitted on ships fitted with compliant exhaust gas cleaning systems.
HSFO (High Sulfur Fuel Oil) X149. Marine Fuels, Bunkering, and Alternative Fuels: Residual fuel oil with sulfur content above the 0.50% global cap, generally only usable with an approved scrubber.
HSFO (High Sulphur Fuel Oil) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Residual fuel with sulphur above the 0.50% m/m global cap, usable only with an approved scrubber.
HSH Nordbank X49. Ship Finance, Leasing and Maritime Capital Markets: Former German Landesbank that was once the world's largest shipping lender, restructured into Hamburg Commercial Bank.
HSL (Hydrographic Survey Launch) X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Generic class of survey launches typically 8 to 12 meters long with integrated multibeam, used as ship's boats on mother survey vessels.
HSM X15. Ports, Terminals and Stevedoring: Heerema heavy-lift vessel, occasionally calling project cargo berths.
HSS (High-Speed Craft) X9. Cargo Securing, Lashing and Stability Vocabulary: Subject to HSC Code rather than standard SOLAS lashing rules.
HSSC A2. Maritime safety legislation: SOLAS and its codes: Harmonized System of Survey and Certification under SOLAS, MARPOL, Load Lines, and BCH/IBC/IGC/BWM.
HSSD (Hydrographic Survey Specifications and Deliverables) X129. Hydrographic Offices, Survey Vessels and Marine Cartography: NOAA OCS document detailing survey accuracy, processing, and deliverable requirements for contract and in-house surveys.
HSSEQ (Health, Safety, Security, Environment, and Quality) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The integrated management discipline whose maturity is assessed through TMSA and SIRE.
HST Marine X105. Offshore Wind Farm Installation and Vessels: UK CTV operator running a fleet of crew transfer catamarans for offshore wind farms.
HSVA X162. Naval Architecture, Stability, Resistance, and Structural Design: Hamburgische Schiffbau-Versuchsanstalt (Hamburg Ship Model Basin), founded 1913, operating a deep-water tank, ice tank, and cavitation tunnel.
HTS X68. Maritime Satcom and Telecommunications: Common abbreviation for High Throughput Satellite.
HTSUS X6. Container, Intermodal and Trade Codes: Harmonized Tariff Schedule of the United States, 10-digit US import classification.
HTV X81. Project Cargo, Heavy-Lift and Module Carriers: Heavy Transport Vessel, a semi-submersible cargo ship that can submerge its deck to load and discharge floating cargo.
HTW Sub-Committee A1. The IMO and the international regulatory framework: Sub-Committee on Human Element, Training and Watchkeeping.
Hua An Long X124. Dredging Industry and Reclamation Contractors: CCCC trailing hopper, 21,000 m3 hopper.
Hua An Marine X135. Chemical Tanker Operators and IBC Code Cargoes: Chinese parent that acquired Chembulk Tankers in 2017, integrating the fleet into Asian parcel trades.
Hua Hai Heavy Industry X81. Project Cargo, Heavy-Lift and Module Carriers: Chinese heavy-lift shipowner operating multipurpose project carriers.
Hub X6. Container, Intermodal and Trade Codes: Major transhipment port served by multiple feeder services.
Hub (VSAT) X68. Maritime Satcom and Telecommunications: Central station that manages satellite carriers and provides backhaul for many remote terminals.
Hub Agency X86. Port Agency, Husbandry and Disbursement: Agency role for a network covering principal coordination from a hub location.
Hub Beach Joint X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Onshore manhole transition where a submarine cable is jointed to a terrestrial backhaul cable.
Hub cap fin (PBCF) X38. Propellers, Stern Gear and Shaft Lines: Mitsui propeller boss cap fins recovering hub-vortex energy; one of the most installed ESDs.
Hub City Project Office X104. Project Cargo Forwarders and Heavy Transport: Forwarder office located near a project hub such as Houston, Dubai, or Singapore.
Hub cone X38. Propellers, Stern Gear and Shaft Lines: Conical aft portion of the propeller hub, downstream of the blade roots.
Hub Generator X67. Marine Electrical Systems and Shore Power: Generator integrated within the propeller hub, used in some Voith Schneider and electric-pod concepts.
Hub height X42. Offshore Wind Installation and Cable Lay: Vertical distance from mean sea level to the rotor hub center, a key turbine selection parameter.
Hub height equivalent (tidal) X57. Ocean Energy Beyond Wind: Reference depth of the rotor center used to characterize current shear at a tidal site.
Hub port X15. Ports, Terminals and Stevedoring: port with high transshipment share, e.g., Singapore, Algeciras, Rotterdam.
Hub ratio (d/D) X38. Propellers, Stern Gear and Shaft Lines: Ratio of hub diameter to propeller diameter, larger in CPP than in FPP due to internal mechanism.
Hub Reduction X169. Container Terminal Cranes, Yard Equipment, and Lashing: Final gear stage in the wheel hub of yard tractors and reach stackers that multiplies axle torque.
Hub strake X19. Engine Room Watchkeeping and UMS Operations: Internal hub liner on controllable pitch propellers, not a watchkeeping item but referenced in shaft surveys.
Hub vortex X38. Propellers, Stern Gear and Shaft Lines: Coherent vortex shed from the propeller hub on the centerline, associated with hub erosion and rudder cavitation.
Hub-and-spoke feeder X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: A short sea pattern where deep-sea container ships call at a hub port and feeders distribute to regional ports.
Hubei X106. Naval Surface Combatants: People's Liberation Army Navy Type 075 amphibious assault ship, hull 34.
Hubless rim-drive thruster X38. Propellers, Stern Gear and Shaft Lines: Electric thruster with the motor stator in a duct rim and blades cantilevered to a hubless ring.
HUD X113. Drydock and Ship Repair Yards: Hong Kong United Dockyards acronym used for the Tsing Yi repair yard.
HUDDLE Test D5. Coastal processes, sea-level, cryosphere and ocean observation science: Field comparison test for autonomous platforms.
Hudig Veder Marine X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: Dutch marine claims and survey firm with historical roots in Rotterdam shipping.
Hudong Heavy Machinery (HHM) X90. Marine Engine Specific Model Enumeration: Chinese builder under CSSC licensed to produce MAN B&W two-stroke engines for domestic newbuildings.
Hudong-Zhonghua X29. Ship Sale and Purchase, Management Contracts and Valuation: Shanghai shipbuilder under CSSC, LNG carrier specialist.
Hudong-Zhonghua Shipbuilding X58. Shipbuilding Yards and Construction: CSSC subsidiary at Shanghai, leading Chinese builder of LNG carriers.
Hudson X124. Dredging Industry and Reclamation Contractors: NMDC TSHD of 11,650 m3 hopper.
Hudson Bay X10. Marine Biology, Fisheries and Oceanography: Large inland sea of northern Canada.
Hudson Canyon Pipeline Corridor X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Routing study area off New York and New Jersey balancing pipelines, cables, and fisheries.
Hudson, Henry X39. Pre-1900 Maritime History: English navigator who explored the Hudson Bay and Hudson River in 1610 and 1609 respectively.
Hudson's Bay Company X39. Pre-1900 Maritime History: English trading company chartered by Charles II on May 2, 1670, the oldest continuously operated commercial corporation in North America.
HudsonCyber X107. Maritime Cybersecurity and OT Security: Maritime cyber risk consultancy providing assessments and training.
HUEBA X31. Helicopter Operations on Ships: Helicopter Underwater Emergency Breathing Apparatus, 3 minute STASS air supply.
HUET X31. Helicopter Operations on Ships: Helicopter Underwater Escape Training, capsized cabin egress drill.
Hughes 5000C X168. Bridge Electronics: Radar, ECDIS, GMDSS, and IBS: Kelvin Hughes coastal X-band radar product family used by VTS authorities and patrol vessels.
Hughes friction line B1. Naval Architecture: CF formulation with form-factor approach.
Hughes Hubbard & Reed LLP X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: New York-headquartered US law firm with a longstanding admiralty and maritime practice.
Hugin X42. Offshore Wind Installation and Cable Lay: Reference autonomous underwater vehicle used in offshore wind seabed surveys.
HUGIN 1000 X65. ROVs, AUVs, USVs and Marine Robotics: Kongsberg autonomous underwater vehicle rated to 1,000 m for survey and reconnaissance.
HUGIN 3000 X65. ROVs, AUVs, USVs and Marine Robotics: Kongsberg deep water AUV variant rated to 3,000 m used in offshore oil and gas survey.
HUGIN 4500 X65. ROVs, AUVs, USVs and Marine Robotics: Kongsberg AUV rated to 4,500 m water depth used by commercial survey operators.
HUGIN 6000 X65. ROVs, AUVs, USVs and Marine Robotics: Kongsberg AUV rated to 6,000 m water depth for full ocean basin survey.
Hugin AUV D2. Hydrography, tides, waves, bathymetry and marine geology: Kongsberg autonomous underwater vehicle used in survey work.
HUGIN Endurance X65. ROVs, AUVs, USVs and Marine Robotics: Long endurance HUGIN class AUV with greatly extended battery capacity for very long missions.
HUGIN Superior X65. ROVs, AUVs, USVs and Marine Robotics: Latest generation HUGIN AUV with integrated synthetic aperture sonar and improved navigation suite.
Hugli Trade F1. Maritime History: Bengal-based East India trade with European factories.
Huisman X123. Offshore Wind Installation Vessels and Operators: Dutch crane and equipment manufacturer in Schiedam, supplies leg-encircling cranes to Aeolus, Cadeler X-Class and others.
Hulc X39. Pre-1900 Maritime History: A medieval cargo vessel of northern Europe distinguished from the cog by its rounded hull form.
Hull X58. Shipbuilding Yards and Construction: Watertight envelope of the ship, fabricated as blocks and assembled in the building dock.
Hull (port) X57. Ocean Energy Beyond Wind: UK port and home of the Siemens Gamesa blade factory that supports offshore wind and adjacent marine energy activities.
Hull and Machinery (H&M) X4. Marine Insurance, P&I and Claims: insurance of the ship and her machinery against physical loss or damage.
Hull and Machinery (H&M) Survey X5. Marine Surveying and Inspection: Insurance survey covering hull, machinery, and equipment.
Hull and Machinery Inspection X66. Port State Control and Regional MOUs: Component of expanded inspection.
Hull and machinery insurance C2. Ship operations, crewing and technical management: H&M, marine insurance for the vessel itself.
Hull and Machinery Insurance (H&M) X53. Marine Insurance, P&I and Hull Clauses: The class covering loss of or damage to the ship, her machinery, equipment, and certain liabilities.
Hull and Machinery Survey X43. Marine Surveying and Warranty Surveying: A condition inspection commissioned by hull and machinery underwriters to assess insurability and identify required repairs.
Hull and Machinery Surveyor X86. Port Agency, Husbandry and Disbursement: Surveyor for hull insurers attending damage and repair incidents.
Hull and Niche Area Inspection X165. Marine Coatings, Antifouling, and Hull Husbandry: An IMO MEPC.378(80) recommended underwater inspection focusing on sea chests, rope guards, and shaft housings.
Hull and Propeller Performance Monitoring X78. Voyage Optimization and Vessel Performance Software: The process of assessing and tracking the additional resistance and power required by a vessel due to hull fouling and propeller roughness over time.
Hull Anode X100. Marine Cathodic Protection and Anodes: A sacrificial anode welded or bolted directly to the ship hull below the waterline.
Hull Block Severance Sequence X50. Ship Recycling, Demolition and Hong Kong Convention: The structural sequencing plan for cutting the ship into transportable sections, included in the Ship Recycling Plan.
Hull cleaning C2. Ship operations, crewing and technical management: In-water hull cleaning subject to biofouling rules.
Hull Cleaning Coordination X86. Port Agency, Husbandry and Disbursement: Arrangement of underwater hull cleaning under port environmental rules.
Hull Cleaning Pre-Beaching X28. Ship Recycling and End-of-Life: Pre-arrival hull and tank cleaning to limit pollution risk on beaching.
Hull cleaning robot B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Crawler underwater hull cleaning unit.
Hull Cleaning Survey X5. Marine Surveying and Inspection: Inspection before and after in-water hull cleaning.
Hull coating X45. Marine Paints, Coatings and Antifouling: Composite coating system applied to underwater hull, including anticorrosive primer, tie coat, and antifouling topcoat.
Hull Condition Monitoring X96. Hull Integrity Monitoring and Strain Gauges: Broad practice of tracking structural condition including stress, vibration, corrosion, and cracking.
Hull crawler X18. Ballast Water, Biofouling and Antifouling: Magnetic or vacuum-attached robotic platform for inspection or cleaning.
Hull Cutting Schedule X167. Major Salvage Companies, Wreck Removals, and Equipment: Engineering plan defining section size, weight, and lift order in segmented wreck removal.
Hull Cyber Clause, JCC X117. Marine Insurance Markets, Captives and Reinsurance: Joint Cargo Committee clause excluding cyber as a cause of physical hull loss.
Hull damage X12. Maritime Casualties and Investigation: Casualty descriptor covering structural failure, fracture, or set-in plating not amounting to loss.
Hull down X3. Ship Handling, Seamanship and Deck Vocabulary: Hull below the horizon, only the upper works visible.
Hull efficiency eta_H X38. Propellers, Stern Gear and Shaft Lines: Defined as (1 - t) / (1 - w), accounting for thrust deduction and wake fraction.
Hull efficiency etaH X162. Naval Architecture, Stability, Resistance, and Structural Design: Ratio of effective to thrust power equal to (1 minus t) divided by (1 minus w).
Hull erection X58. Shipbuilding Yards and Construction: Sequence of placing and welding blocks together in the building dock.
Hull Form X79. Tugs and Towage Industry: Underwater shape of a tug determining its hydrodynamic performance in direct and indirect modes.
Hull form coefficients X162. Naval Architecture, Stability, Resistance, and Structural Design: Set of non-dimensional ratios (CB, CM, CP, CWP, CVP) characterizing fullness of the underwater hull.
Hull Form Generation X54. Naval Architecture Software and IACS Rules: Process of producing fair hull surfaces in NAPA, Rhinoceros, Maxsurf Modeler, or DELFTship.
Hull Form Optimization X109. Maritime Autonomous Surface Ships and MASS Code: A naval architecture activity that adapts a hull for autonomous operation, often informed by trial data from prior MASS demonstrators.
Hull fouling X45. Marine Paints, Coatings and Antifouling: Accumulation of marine organisms on the underwater hull causing increased frictional resistance.
Hull Fouling Clause 2013 X51. Maritime Arbitration, Law and BIMCO Clauses: The BIMCO clause allocating responsibility for fouling resulting from extended idle periods.
Hull Gauging Survey X43. Marine Surveying and Warranty Surveying: A thickness measurement programme performed by approved firms using ultrasonic equipment to determine remaining steel thickness for class.
Hull Girder Bending Moment X54. Naval Architecture Software and IACS Rules: Vertical and horizontal bending moments governed by IACS UR S11 and S11A.
Hull Girder Horizontal Bending Moment (HBM) X96. Hull Integrity Monitoring and Strain Gauges: Bending moment about the vertical axis arising from lateral wave and maneuvering loads.
Hull girder section modulus (Z) B1. Naval Architecture: Bending section modulus at deck and keel.
Hull Girder Torsion Moment (HTM) X96. Hull Integrity Monitoring and Strain Gauges: Twisting moment on the hull, particularly significant for container ships with large deck openings.
Hull Girder Ultimate Strength X8. IACS, Class Rules and Class Notations: limit-state capacity assessed under IACS Rec.78 and CSR-H.
Hull Girder Vertical Bending Moment (VBM) X96. Hull Integrity Monitoring and Strain Gauges: Bending moment about the transverse axis combining still water and wave-induced components.
Hull husbandry X18. Ballast Water, Biofouling and Antifouling: General term for inspection, cleaning, and maintenance of the underwater hull.
Hull Insurance A5. Maritime Law, private and commercial: Marine insurance on the vessel itself, often under ITCH or IHC 2003.
Hull Insurance Salvage Charges X60. Marine Salvage and Wreck Removal: Costs payable by hull underwriters for salvage rendered to the vessel.
Hull Interest X4. Marine Insurance, P&I and Claims: increased value or disbursements interest separately insured up to the ITC Hulls warranty limit.
Hull King George Dock X59. Offshore Wind O&M, CTVs and SOVs: Humberside dock hosting O&M operations for Yorkshire and Lincolnshire coast wind farms.
Hull line X58. Shipbuilding Yards and Construction: Geometric reference line on the hull form, used for fairing and plate development.
Hull Monitoring System (HMS) X8. IACS, Class Rules and Class Notations: optional class notation for installed hull strain and motion monitoring.
Hull Notation X142. Classification Societies and Class Notations: First element of class symbol relating to structural integrity, for example +100A1 or +A1.
Hull number X11. Naval Vessels, Warship Systems and Naval Architecture: Alphanumeric designation, e.g., CVN-78, used by USN for unique ship identification.
Hull Number Visit X102. Seafarer Welfare and Maritime Charities: Routine ITF inspector visit to a vessel in port to check CBA compliance and conditions on board.
Hull Patch X13. Marine Salvage and Wreck Removal: Steel or composite plate fitted over damage to permit dewatering.
Hull penetration X42. Offshore Wind Installation and Cable Lay: Welded sealed entry point of a J-tube or cable conduit through a vessel or platform hull.
Hull Performance Index X78. Voyage Optimization and Vessel Performance Software: A normalized indicator of hull condition derived from speed, power, and environmental corrections, typically aligned with the ISO 19030 method.
Hull Policy X103. US Inland Waterway Towing and Barge: A marine insurance policy covering physical damage to a barge or towboat hull and machinery.
Hull Policy 1/10/83 X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets: London market Institute Time Clauses Hulls 1/10/83.
Hull Policy 1/11/95 X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets: Institute Time Clauses Hulls 1/11/95, less commonly used.
Hull Potential X100. Marine Cathodic Protection and Anodes: The steel-to-electrolyte potential measured along the hull and compared against the CP criterion.
Hull Pressure (HP) X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral: Pressure imposed on the ship's shell by a fender's reaction force divided by contact area, typically limited to 200 to 250 kN/m^2 for VLCCs and similar.
Hull roughness X45. Marine Paints, Coatings and Antifouling: Average hull roughness Ra measured in micrometers, used to monitor antifouling and surface condition.
Hull Speed X84. Yacht Racing, Regattas and Sailing Governance: The theoretical maximum displacement speed of a hull, scaling with the square root of waterline length.
Hull Stress Monitoring E3. Technology, digitalization and smart shipping: Strain-gauge system on large vessels.
Hull Stress Monitoring (HSM) X20. LNG Operations and Custody Transfer: Strain-gauge system fitted to large LNG carriers monitoring global bending and slamming.
Hull stress monitoring system (HSMS) B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Strain gauges on deck, used at trial.
Hull Surf Studio X54. Naval Architecture Software and IACS Rules: Hull surface modeling package marketed for early-stage naval architecture design.
Hull Survey X43. Marine Surveying and Warranty Surveying: A class or commercial inspection focused on the structural condition of plating, framing, internals, and appendages.
Hull Treatment Survey X113. Drydock and Ship Repair Yards: ESP-related internal survey of bulk carrier and tanker structures supporting drydock condition assessment.
Hull Vane X132. High-Speed Craft, Hydrofoils and Ferry Operators: Stern-mounted hydrofoil that reduces resistance and improves seakeeping, retrofitted on some Damen FCS units.
Hull Vetting Inspection X5. Marine Surveying and Inspection: Charterer or terminal screening inspection of vessel condition.
Hull vibration mode B1. Naval Architecture: Natural vibration shape of the global hull girder.
Hull War Cover X117. Marine Insurance Markets, Captives and Reinsurance: Insurance against war perils for vessels, written by specialist marine war underwriters.
Hull War Risks X53. Marine Insurance, P&I and Hull Clauses: Insurance covering hull losses caused by war, strikes, piracy, terrorism, and related perils, typically excluded from primary hull cover.
Hull War, Strikes, Malicious Acts, Terrorism Clauses X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets: Standard war risk hull cover wordings, including JWLA 5/2003.
Hull-cargo interface X56. LNG/LPG Carriers and IGC Code: Region where cargo tanks transfer loads to hull structure, critical for Moss and SPB tanks.
Hull-mounted shaft brackets X38. Propellers, Stern Gear and Shaft Lines: Single- or twin-arm A-brackets and V-brackets supporting exposed shafts on twin-screw ships.
Hull, Kingston upon X39. Pre-1900 Maritime History: English east coast port and base of the Wilson Line and the Greenland whaling fleet.
HullPIC X119. Maritime Conferences, Trade Shows and Awards: Annual conference on hull performance and insight since 2016 organized by Volker Bertram.
HullSkater X165. Marine Coatings, Antifouling, and Hull Husbandry: Jotun proactive grooming robot launched 2020, deployed under the SeaQuantum Skate antifouling product warranty.
HullWiper X18. Ballast Water, Biofouling and Antifouling: Brush-free, ROV-based in-water cleaning service with filtration and capture.
Human element X12. Maritime Casualties and Investigation: Collective term for human, organizational, and cultural factors in casualty causation.
Human element analysis X163. Marine Accident Investigation Agencies and Landmark Inquiries: Investigation methodology informed by IMO Resolution A.884(21) and the MAIIF Human Element Working Group focusing on individual, task, and organisational factors.
Human Element, Leadership and Management (HELM) X160. Maritime Academies, Universities, and STCW Certification: STCW Manila Amendments mandated training in human resource management, leadership, and decision making at operational (HELM-O) and management (HELM-M) levels.
Human Factor Question X40. Tanker Vetting, SIRE and VIQ: A SIRE 2.0 question category assessing how individual crew members perform tasks, communicate, and apply procedures.
Human Machine Interface X48. Maritime Cybersecurity: Operator facing display and controls for a shipboard automation system, frequently a Windows or Linux PC.
Human Machine Interface (HMI) X139. Maritime Cybersecurity, OT Threats and Standards: Operator workstation for OT, frequently running unsupported Windows variants on vessels delivered before 2015.
Human Override Switch X109. Maritime Autonomous Surface Ships and MASS Code: A physical or software control that returns a MASS from autonomy to manual operation.
Humanitarian Carve-Out X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: A general license or licensing pathway permitting food, medicine, and medical-device shipments to comprehensively sanctioned jurisdictions.
Humber Estuary X124. Dredging Industry and Reclamation Contractors: UK estuarine maintenance program executed by ABP and Boskalis Westminster.
Humber Industrial Cluster X57. Ocean Energy Beyond Wind: UK regional grouping that anchors the East Coast Cluster CCS pipeline to the Endurance store.
Humber Maritime College Hull X121. Maritime Education, Academies and Universities: UK FE provider supporting offshore wind and small-craft training.
Humber Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Pilots of Associated British Ports licensed for the Humber estuary and the ports of Hull, Immingham, Grimsby, and Goole.
Humboldt Current D1. Physical and chemical oceanography and marine meteorology: Cold eastern boundary current along the west coast of South America.
Humidity X16. Nautical Science, Navigation and COLREGs: Water-vapor content of the atmosphere.
Humidity control X70. Reefer Containers and Cold Chain Shipping: Active management of relative humidity inside a reefer container, typically between 65 and 95 percent depending on commodity.
Humidity setpoint X26. Reefer Containers and Cold Chain Logistics: Target relative humidity, typical 85 to 95% for fresh produce, 70 to 85% for some commodities.
Hummingbird Stowable Dinghy F4. Recreational Boating, Yachting and Sport: Folding small craft type.
Hummock X27. Polar Code, Ice Navigation and Polar Operations: Hillock of broken ice forced up by pressure, weathered with time.
Hummocked ice X27. Polar Code, Ice Navigation and Polar Operations: Ice piled up haphazardly by pressure into a chaotic surface.
Hump Speed X132. High-Speed Craft, Hydrofoils and Ferry Operators: Speed at which planing craft transition through maximum resistance before climbing onto plane.
Humpback whale X10. Marine Biology, Fisheries and Oceanography: *Megaptera novaeangliae*, a cosmopolitan baleen whale known for breaching and song.
Humpline X103. US Inland Waterway Towing and Barge: A line rigged over an obstruction such as a barge cover or coaming.
HUMS X31. Helicopter Operations on Ships: Health and Usage Monitoring System, vibration analysis for rotor and gearbox condition.
Hung A Marine Bunker X72. Bunkering Hubs and Bunker Suppliers: Korean coastal bunker operator serving Busan and Ulsan.
Hunt-class X77. Naval Mine Warfare and Mine Countermeasures: A class of thirteen Royal Navy mine countermeasures vessels of GRP construction, commissioned from 1980, undergoing progressive decommissioning during the 2020s.
Hunter-class X62. Naval Warships and Combat Systems: Royal Australian Navy frigate program based on the BAE Systems Type 26 Global Combat Ship.
Hunter-class frigate X106. Naval Surface Combatants: Royal Australian Navy future anti-submarine frigate class of nine ships derived from the Type 26 design, building at Osborne Naval Shipyard.
Hunter-killer X11. Naval Vessels, Warship Systems and Naval Architecture: Mission category historically applied to SSN against SSBN.
Huntington District X103. US Inland Waterway Towing and Barge: The US Army Corps of Engineers district headquartered in Huntington, West Virginia with responsibility for portions of the Ohio River basin.
Huntington Ingalls Industries X11. Naval Vessels, Warship Systems and Naval Architecture: USN prime shipbuilder for Ford CVN and Virginia SSN.
Huntington Ingalls Industries Newport News Shipbuilding X91. Submarines and Submarine Cable Systems: US shipyard co-producing Virginia-class submarines with Electric Boat.
Huntington Ingalls Ingalls X62. Naval Warships and Combat Systems: Pascagoula, Mississippi shipyard building Arleigh Burke destroyers and amphibious assault ships.
Huntington Ingalls Newport News X62. Naval Warships and Combat Systems: Virginia shipyard building Nimitz and Ford-class aircraft carriers and Virginia-class submarines.
Hurricane X16. Nautical Science, Navigation and COLREGs: Tropical revolving storm with winds 64 knots or above in the North Atlantic and eastern North Pacific.
Hurricane Heat Potential D1. Physical and chemical oceanography and marine meteorology: Integrated upper-ocean heat content above 26 degrees Celsius.
Hurtigruten X24. Cruise, Passenger Ship and Ferry Operations: Norwegian coastal and expedition cruise operator.
Hurtigruten Coastal Express X110. LNG Bunkering Infrastructure and Vessels: Norwegian coastal voyage operator, with LNG and LNG-battery hybrid vessels in its expedition fleet.
Hurtigruten Expeditions X97. Polar Expedition Cruise and IAATO Operations: Former brand for Hurtigruten's expedition arm, restructured in 2024 into Hurtigruten Norway and HX.
Hurtigruten Norway X97. Polar Expedition Cruise and IAATO Operations: Post-2024 brand for the traditional Norwegian coastal voyage operations of the historic Hurtigruten company.
Husbandry Account X86. Port Agency, Husbandry and Disbursement: Disbursement account specific to husbandry services rather than port call dues.
Husbandry Agent X120. Marine Catering, Provisions and Ship Chandlers: Port agent appointed solely for crew, stores, and CTM, not cargo operations.
Husbandry Call X86. Port Agency, Husbandry and Disbursement: Port call performed primarily for crew, stores, and personal services.
Husbandry Quote X86. Port Agency, Husbandry and Disbursement: Estimate of husbandry costs prepared before the port call.
Hutchison Logistics X83. ISO Container Manufacturing and Leasing: Depot and container services unit of CK Hutchison's port-related logistics group.
Hutchison Ports X15. Ports, Terminals and Stevedoring: global terminal operator headquartered in Hong Kong.
Hutchison Ports Yantian X76. Stevedoring, Lashing and Cargo Securing: Container terminal operator in Shenzhen, China, providing stevedoring for one of the largest container ports.
Hutchison Sokhna Bunker Service X72. Bunkering Hubs and Bunker Suppliers: Bunker supply at Sokhna port Egypt through truck to ship by Misr Petroleum and Cooperative for Petroleum.
HV Compressor X63. Marine Auxiliary Machinery and Pumps: Hatlapa HV series of vertical starting air compressors.
HV hydraulic oil X61. Marine Lubricants and Cylinder Oils: ISO grade hydraulic fluid with shear stable viscosity index improver per ISO 6743-4 type HV.
HVAC X105. Offshore Wind Farm Installation and Vessels: High Voltage Alternating Current transmission used for offshore wind export cables typically up to 245 kV.
HVAC export (marine) X57. Ocean Energy Beyond Wind: High-voltage alternating current export system used by most existing offshore renewable installations.
HVAC export cable X42. Offshore Wind Installation and Cable Lay: Three core armored submarine cable transmitting offshore wind power at voltages from 132 kV to 275 kV.
HVAF thermal spray (shaft) X38. Propellers, Stern Gear and Shaft Lines: High-velocity air-fuel thermally sprayed coating used to repair shaft journal wear at seal positions.
HVDC X105. Offshore Wind Farm Installation and Vessels: High Voltage Direct Current transmission preferred for long export distances generally above 80 to 100 km, requiring converter platforms.
HVDC (High Voltage Direct Current) X91. Submarines and Submarine Cable Systems: Transmission technology used on most long submarine power interconnectors.
HVDC converter platform X42. Offshore Wind Installation and Cable Lay: Offshore platform housing AC to DC conversion equipment for long distance wind power transmission.
HVDC export cable X42. Offshore Wind Installation and Cable Lay: Mass impregnated or extruded XLPE submarine cable transmitting offshore wind power as direct current.
HVDC interconnector X57. Ocean Energy Beyond Wind: High-voltage direct current cable system that links offshore generation, including ocean energy, with onshore grids.
HVO X33. Inland Navigation and Barge Operations: Hydrotreated vegetable oil, a drop-in renewable diesel used in inland vessel engines.