Glossary

Maritime glossary, terms beginning with W (page 5)

All maritime glossary terms that begin with the letter W, drawn from every subject section. 1357 entries.

Showing 250 of 1357 terms (page 5 of 6).

Wing wall X15. Ports, Terminals and Stevedoring: lateral retaining wall at lock or ramp.
WinGD X61. Marine Lubricants and Cylinder Oils: Winterthur Gas and Diesel, the company developing two-stroke crosshead engines descended from the Sulzer line, with associated cylinder oil specifications.
WinGD X-DF B2. Marine Engineering: Low-pressure dual-fuel two-stroke engine family.
WinGD X-DF (XDF) X110. LNG Bunkering Infrastructure and Vessels: Winterthur Gas and Diesel low-pressure dual-fuel two-stroke engine using a lean-burn Otto cycle, used on LNG-fueled merchant vessels.
WinGD X-DF Conversion X113. Drydock and Ship Repair Yards: Drydock retrofit converting WinGD low-pressure dual-fuel two-stroke engines to LNG operation.
WinGD X-DF Engine D6. Decarbonization, emissions and alternative fuels: Two-stroke dual-fuel engine running on LNG with pilot fuel.
WinGD X-DF-A B2. Marine Engineering: Ammonia dual-fuel two-stroke engine.
WinGD X-DF-M X34. Decarbonization, Alternative Fuels and Carbon Pricing: WinGD two-stroke methanol-capable dual-fuel engine.
WinGD X-DF2.0 X20. LNG Operations and Custody Transfer: Evolution of X-DF reducing methane slip via revised combustion timing.
WinGD X62 X19. Engine Room Watchkeeping and UMS Operations: Two stroke diesel engine of 620 mm bore.
WinGD X72 X19. Engine Room Watchkeeping and UMS Operations: Two stroke diesel engine of 720 mm bore.
WinGD X72DF-A X140. Ammonia as Marine Fuel and Hydrogen Shipping: WinGD ammonia-fueled two-stroke engine of 72 cm bore, planned 2025 release.
WinGD X92 X19. Engine Room Watchkeeping and UMS Operations: Two stroke diesel engine of 920 mm bore for large container ships.
WinGD X92-B B2. Marine Engineering: Two-stroke engine for ULCV.
WinGD X92DF-A X140. Ammonia as Marine Fuel and Hydrogen Shipping: WinGD ammonia dual-fuel engine on 92 cm bore for VLAC and large bulker propulsion.
Winona X103. US Inland Waterway Towing and Barge: A Minnesota town on the Upper Mississippi River adjacent to Lock and Dam 5A.
Winson, The [1982] AC 939 X143. Landmark Maritime Law Cases and Doctrines: House of Lords held that salvors have a possessory lien for storage charges following discharge at a port of refuge.
Winston and Strawn X114. Maritime Arbitration and Shipping Law Firms: International firm with a London arbitration practice including shipping matters.
Winter Load Line X9. Cargo Securing, Lashing and Stability Vocabulary: Load line for winter zones per Load Line Convention.
Winter navigation (Baltic) X27. Polar Code, Ice Navigation and Polar Operations: Finnish-Swedish Ice Class regime governs Baltic winter trade with icebreaker assistance.
Winter North Atlantic Load Line (WNA) X9. Cargo Securing, Lashing and Stability Vocabulary: More restrictive winter line for North Atlantic.
Winterization X14. Offshore Oil and Gas Marine Operations: Cold climate protection for offshore equipment.
Wintershall Dea X57. Ocean Energy Beyond Wind: Operator that has partnered in the Greensand CCS project and other North Sea CO2 storage studies.
Winterthur X90. Marine Engine Specific Model Enumeration: Swiss city housing the WinGD headquarters and inheriting the historical Sulzer two-stroke engine design lineage.
WIO RPRC X126. Marine Oil Spill Response and OPRC Regimes: Western Indian Ocean Regional Pollution Response Centre at Mombasa.
WIOCC X122. Submarine Cable Laying, Repair Vessels and Operators: West Indian Ocean Cable Company, owner-operator of EASSy, 2Africa landings and the new WIOCC Group cable depot at Mombasa.
Wiper X21. STCW Certificates, Crewing and Seafarer Welfare: Junior engine room rating performing cleaning and assistance duties.
Wiper Malware X25. Maritime Cybersecurity, OT and IT: Malware designed to destroy data, including NotPetya, Shamoon, HermeticWiper and CaddyWiper.
WiperMalware X139. Maritime Cybersecurity, OT Threats and Standards: Destructive code such as NotPetya and AcidRain, distinguished from ransomware by absence of recovery path.
WIPON (Whether in Port or Not) X17. Chartering, Shipbroking and Freight Trading: NOR qualifier permitting tendering before entering the port limits.
Wirana X28. Ship Recycling and End-of-Life: Singapore-based cash buyer active in the demolition market.
Wirana Shipping X101. Vessel Brokerage Software and Chartering Platforms: Singapore-headquartered ship recycling cash buyer, one of the largest by purchased tonnage.
Wirana Shipping (Singapore) X50. Ship Recycling, Demolition and Hong Kong Convention: A leading cash buyer of end-of-life vessels, headquartered in Singapore.
Wirana Shipping Corporation X118. Ship Recycling Yards, Beaches and Regulation: Singapore-headquartered cash-buyer founded in the 1980s, among the longest established in the sector.
Wire X103. US Inland Waterway Towing and Barge: A steel rope used in barge coupling and tow makeup.
Wire Boat X103. US Inland Waterway Towing and Barge: A small towboat dedicated to barge fleeting and wire handling.
Wire Cable Recovery X50. Ship Recycling, Demolition and Hong Kong Convention: The salvage of mooring wires, crane wires, and lifting tackle for resale to non-marine markets.
Wire Mesh Strapping X9. Cargo Securing, Lashing and Stability Vocabulary: Securing band; MSL = 0.6 x BL per CSS Annex 13.
Wire rope X3. Ship Handling, Seamanship and Deck Vocabulary: Rope made of steel strands.
Wire Rope Brake X169. Container Terminal Cranes, Yard Equipment, and Lashing: Wedge or roller brake that grips the hoist rope as a backup to drum brakes on safety-critical cranes.
Wire Rope Clamp X9. Cargo Securing, Lashing and Stability Vocabulary: Clip for forming eyes in wire rope.
Wire Rope Inspection X5. Marine Surveying and Inspection: Visual and dimensional inspection of wire ropes and terminations.
Wire Rope Recovery X28. Ship Recycling and End-of-Life: Removal of cargo gear and rigging wire ropes for non-ferrous recovery.
Wire Rope Sling (WRS) X104. Project Cargo Forwarders and Heavy Transport: Sling fabricated from steel wire rope, rated and tagged per ASME B30.9.
Wire Rope Tail X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral: Short wire connection between a synthetic mooring line and an end fitting, occasionally used in OCIMF mixed mooring systems.
Wire Saw Cutting X60. Marine Salvage and Wreck Removal: Use of diamond wire saws for severance of jacket members and pipe.
Wire sweep X77. Naval Mine Warfare and Mine Countermeasures: A mechanical sweep using a serrated or explosive-cutter-fitted wire towed at depth to cut moored mine cables.
Wire-Drag Survey X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Historic technique using a wire suspended between two vessels at a set depth to verify minimum clear depths over an area, now largely replaced by full-coverage multibeam.
Wirelane (cable system) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Internal placeholder name occasionally used in routing studies.
Wireless Access Point Hardening X48. Maritime Cybersecurity: Configuration measures that secure shipboard Wi Fi infrastructure.
Wireless Bridge X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents: A point-to-point link between ship and terminal, requiring authentication and encryption to avoid eavesdropping.
Wireline X14. Offshore Oil and Gas Marine Operations: Slickline or electric line operations through tree.
Wireline Profiler D5. Coastal processes, sea-level, cryosphere and ocean observation science: Profiler that crawls up and down a mooring cable.
Wireline Pull-In Head X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Termination on a cable or pipeline end used to attach the pull-in wire during landfall or J-tube pull-in.
Wireshark X25. Maritime Cybersecurity, OT and IT: Open source packet analyzer used in network forensics.
Wirral Met College Maritime X121. Maritime Education, Academies and Universities: See Birkenhead Wirral Met College Maritime.
Wirth X124. Dredging Industry and Reclamation Contractors: Cutter teeth supplier brand.
WiSAFE/WIMAX (Port) E3. Technology, digitalization and smart shipping: Wireless backhaul for port automation.
WisaMo X34. Decarbonization, Alternative Fuels and Carbon Pricing: Inflatable wing sail system developed by Michelin.
WISCO X92. Marine Steel Suppliers and Shipbuilding Plate: Wuhan Iron and Steel Company, Chinese integrated steelmaker now part of China Baowu Steel Group.
Wiska Cable Gland X96. Hull Integrity Monitoring and Strain Gauges: German brand of cable glands used in marine instrumentation enclosures.
Wismar Hochschule X121. Maritime Education, Academies and Universities: See Hochschule Wismar.
Wismar University of Applied Sciences X55. Marine Simulators, Training and Maritime Academies: Hochschule Wismar in Germany whose Warnemunde campus offers nautical and marine engineering programs.
WISTA AGM X119. Maritime Conferences, Trade Shows and Awards: Annual general meeting of the Women's International Shipping and Trading Association, founded 1974, rotating among member nations.
WISTA International Conference X119. Maritime Conferences, Trade Shows and Awards: Flagship annual conference combined with the WISTA AGM, attended by national chapters.
WISTA Marine Insurance Section X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets: Women's International Shipping and Trading Association insurance practitioner network.
WISTA Personality of the Year Award X119. Maritime Conferences, Trade Shows and Awards: Annual WISTA recognition presented at the AGM.
With Employment X29. Ship Sale and Purchase, Management Contracts and Valuation: Valuation including value of attached charter.
Withdrawal X17. Chartering, Shipbroking and Freight Trading: Owner's remedy of taking back the vessel for non-payment of hire under a time charter.
Withdrawal Clause X51. Maritime Arbitration, Law and BIMCO Clauses: A time charter provision entitling the owner to withdraw the vessel for charterer default, typically non-payment of hire.
Withdrawal of class X7. Flag State, Port State Control and Detention Vocabulary: See class withdrawal.
Withdrawal Survey X43. Marine Surveying and Warranty Surveying: An attendance during shaft withdrawal for class examination, including alignment checks and tail shaft renewal as required.
Witherbys Cyber Security Workbook X139. Maritime Cybersecurity, OT Threats and Standards: Reference manual covering policies, procedures, drills, and reporting for shipboard crews, 5th edition 2024.
Withholding Tax on Freight X86. Port Agency, Husbandry and Disbursement: Tax withheld on freight by some jurisdictions, supported by agent filings.
Without Benefit of Salvage X53. Marine Insurance, P&I and Hull Clauses: A historical policy form rendered void by Section 4 of the Marine Insurance Act 1906 as constituting a wagering contract.
Without Guarantee (WOG) X17. Chartering, Shipbroking and Freight Trading: Qualifier indicating information is given without warranty.
Without Prejudice A5. Maritime Law, private and commercial: Privilege over settlement communications.
Without Prejudice Communication X51. Maritime Arbitration, Law and BIMCO Clauses: A protected settlement communication inadmissible in evidence on the issues to which it relates.
Without prejudice communications X152. Maritime Arbitration and Dispute Resolution: Settlement-related communications protected from disclosure to the tribunal absent waiver.
Without Prejudice Save as to Costs X51. Maritime Arbitration, Law and BIMCO Clauses: A communication admissible on costs but not on the merits, common in arbitration.
Without Recourse X29. Ship Sale and Purchase, Management Contracts and Valuation: Sale or assignment without seller liability for buyer's later losses.
Witness conferencing X152. Maritime Arbitration and Dispute Resolution: Hot-tubbing of witnesses or experts to test contested issues collaboratively before the tribunal.
Witness Drill X66. Port State Control and Regional MOUs: PSC officer witnesses fire, abandon ship, or enclosed space rescue drill during inspection.
Witness Inspection X146. Port State Control Regimes, MoUs, and Inspection Systems: A combined inspection where two PSC authorities co-attend, often during PSCO training.
Witness interview protocol X12. Maritime Casualties and Investigation: Investigator method ensuring voluntary, recorded, and rights-respecting interviews under the Casualty Code.
Witness rights X163. Marine Accident Investigation Agencies and Landmark Inquiries: Procedural protections for witnesses interviewed in a marine safety investigation including being informed of the subject of the investigation and, where domestic law allows, the right not to…
Witness Statement X51. Maritime Arbitration, Law and BIMCO Clauses: A written record of a witness's evidence, served in advance of the hearing in lieu of evidence in chief.
Witness summons X152. Maritime Arbitration and Dispute Resolution: Court order under section 43 English Arbitration Act 1996 compelling attendance and document production by a witness in support of arbitration.
Witness Surveyor X5. Marine Surveying and Inspection: Surveyor attending operations to witness and certify events.
Witnessed Inspection X40. Tanker Vetting, SIRE and VIQ: A SIRE inspection conducted by a candidate inspector under the supervision of an accredited mentor.
Witnessed Sampling X115. Marine Bunker and Cargo Surveying: Sampling carried out in the presence of all parties to enhance evidential value of the resulting sample.
Witnessing of Bunker Sampling X86. Port Agency, Husbandry and Disbursement: Witnessing of bunker sample drawing by surveyor and agent.
Witnessing of Draft Survey X86. Port Agency, Husbandry and Disbursement: Witnessing of draft survey readings by the agent.
WJ-1 X88. Marine Surface Preparation and Coatings Application: SSPC-SP 12 water jetting cleanliness condition where the surface is free of visible matter when viewed without magnification.
WJ-2 X88. Marine Surface Preparation and Coatings Application: SSPC-SP 12 water jetting cleanliness condition allowing random staining of no more than 5 percent of each unit area.
WJ-3 X88. Marine Surface Preparation and Coatings Application: SSPC-SP 12 water jetting cleanliness condition allowing random staining of no more than 33 percent of each unit area.
WJ-4 X88. Marine Surface Preparation and Coatings Application: SSPC-SP 12 water jetting cleanliness condition allowing all loose rust, loose mill scale, and loose coatings to be removed with tightly adherent matter permitted to remain.
WKT (Well Known Text) D2. Hydrography, tides, waves, bathymetry and marine geology: Standard text representation of geographic features.
WLB X130. National Coast Guards and Cutter Fleets: USCG hull classification for seagoing buoy tender, Juniper-class.
WLBB X130. National Coast Guards and Cutter Fleets: USCG hull classification for buoy-tender icebreaker, Mackinaw (WLBB-30).
WLL X76. Stevedoring, Lashing and Cargo Securing: Working Load Limit of a lashing component for in-service use, typically below the MSL.
WLM X130. National Coast Guards and Cutter Fleets: USCG hull classification for coastal buoy tender, Keeper-class.
WMD Interdiction E1. Maritime security, geopolitics and risk: Boarding and seizure of WMD-related shipments under PSI/SUA.
WMD Trade Control Regulation X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: U.S. regulations under EO 13382 used to designate Iranian and DPRK shipping firms linked to proliferation.
WMEC X130. National Coast Guards and Cutter Fleets: USCG hull classification for Medium Endurance Cutter, Famous and Reliance classes.
WMO D1. Physical and chemical oceanography and marine meteorology: World Meteorological Organization, the UN agency for weather, climate, and water.
WMO (World Meteorological Organization) B3. Nautical Science: Standards for sea/weather observations.
WMO Marine Climatological Summary D5. Coastal processes, sea-level, cryosphere and ocean observation science: Summary of marine meteorological observations.
WMO No. 259 X52. Polar Code, Arctic and Antarctic Shipping: Publication number of the WMO Sea Ice Nomenclature.
WMO Sea Ice Concentration X27. Polar Code, Ice Navigation and Polar Operations: Reported in tenths in the egg code top row.
WMO Sea Ice Nomenclature X27. Polar Code, Ice Navigation and Polar Operations: WMO No. 259; international standard for ice terminology including egg code.
WMO Sea-Ice Egg Code X133. Polar Research Vessels and Polar Code Regimes: Standardized symbology for sea-ice charts referenced in Polar Code PWOM.
WMS C4. Ports, terminals and coastal/marine civil engineering: Warehouse management system.
WMSL X130. National Coast Guards and Cutter Fleets: USCG hull classification for Maritime Security Cutter Large, Legend-class.
WMSM X130. National Coast Guards and Cutter Fleets: USCG hull classification for Maritime Security Cutter Medium, Heritage-class.
WMTC (World Maritime Technology Conference) X144. Bridge Simulators, Engine Room Simulators, and Maritime Training Equipment: Hosts simulation track every four years.
WMU A1. The IMO and the international regulatory framework: World Maritime University, IMO's postgraduate institution in Malmo, Sweden.
WMU (World Maritime University) X146. Port State Control Regimes, MoUs, and Inspection Systems: The IMO university in Malmo, Sweden, providing PSC officer education at the postgraduate level.
WMU Annual Graduation X119. Maritime Conferences, Trade Shows and Awards: Annual graduation ceremony of the World Maritime University in Malmo.
WNI X168. Bridge Electronics: Radar, ECDIS, GMDSS, and IBS: Weathernews Inc, a major Asian provider of voyage routing and onboard weather services.
WNI (Weathernews Inc.) X78. Voyage Optimization and Vessel Performance Software: A global weather services company providing marine weather forecasts, routing services, and onboard products.
Wobbe Index X20. LNG Operations and Custody Transfer: GHV divided by square root of relative density; key gas quality parameter regulated by pipeline operators.
WOCE X10. Marine Biology, Fisheries and Oceanography: World Ocean Circulation Experiment (1990 to 2002), foundational global hydrography program.
WODA X175. Port Engineering, Dredging, Breakwaters, and Quays: World Organization of Dredging Associations, the umbrella body coordinating CEDA, WEDA, and EADA.
Wollongong X73. Marine Hydrography, Charting and ENC: The headquarters of the Australian Hydrographic Office.
Womar Tanker Pools X135. Chemical Tanker Operators and IBC Code Cargoes: Singapore and Stamford Connecticut commercial pool operator running stainless-steel chemical tankers in 19,000 to 33,000 dwt segment, founded by Womar Logistics.
Womar Tankers X93. IBC Code and Chemical Tanker Operations: Chemical tanker pool operator providing commercial management for participating owners in international parcel trades.
Women Seafarers X154. Maritime Welfare, Seafarer Charities, and MLC Rights: Particular welfare focus given that women make up roughly two percent of the global maritime workforce and face distinct risks.
Women Seafarers' Network (ISWAN) X102. Seafarer Welfare and Maritime Charities: ISWAN initiative supporting women working at sea through resources and peer networks.
Wonder class X24. Cruise, Passenger Ship and Ferry Operations: Informal designation for the Royal Caribbean Wonder of the Seas variant of Oasis class.
Wonder of the Seas X24. Cruise, Passenger Ship and Ferry Operations: Royal Caribbean Oasis class ship delivered 2022, 236,857 GT.
Wonderware X107. Maritime Cybersecurity and OT Security: Heritage brand of the InTouch human machine interface now within AVEVA.
Wong Partnership X114. Maritime Arbitration and Shipping Law Firms: Singapore firm with a maritime arbitration practice and frequent SCMA appointments.
Wonsan X124. Dredging Industry and Reclamation Contractors: North Korean port reference.
Wood Chips X1. Cargo Science, Commodities and Cargo Care: Group B self-heating; CO emission; oxygen depletion in holds.
Wood Group X57. Ocean Energy Beyond Wind: International engineering and consulting firm active in offshore CCS, hydrogen, and marine renewable engineering.
Wood packaging X6. Container, Intermodal and Trade Codes: Pallets and crates regulated under ISPM 15.
Wood Pellets X1. Cargo Science, Commodities and Cargo Care: Group B self-heating biofuel.
Wood Pulp X1. Cargo Science, Commodities and Cargo Care: Forest product breakbulk in bales.
Wood Pussy F4. Recreational Boating, Yachting and Sport: Vintage one-design catboat.
Wood Treated with Pentachlorophenol X75. IMDG Code, Classes, Packing and Segregation: Generally not regulated under IMDG.
Wood-and-fiberglass hull X11. Naval Vessels, Warship Systems and Naval Architecture: Construction common to MCM vessels for low magnetic signature.
Wood-chip carrier B5. Ship Types and Individual Vessels: High-cubic open-hatch bulker.
Wooden Box X75. IMDG Code, Classes, Packing and Segregation: Packaging code 4C1 ordinary or 4C2 sift proof.
Wooden hull MCMV X77. Naval Mine Warfare and Mine Countermeasures: A traditional low-magnetic-signature construction used in several mid-twentieth-century minesweeper classes including early Avenger-class hull material.
Woodside Energy X134. LNG and LPG Carrier Operators and Containment Systems: Australian LNG operator at Northwest Shelf, Pluto and Scarborough projects, charterer of dedicated LNG carrier fleet.
Woodward 2301A X67. Marine Electrical Systems and Shore Power: Analog load sharing and speed control unit historically used on marine genset paralleling.
Woodward easYgen X67. Marine Electrical Systems and Shore Power: Genset management and PMS controller family from Woodward used widely on commercial vessels.
Woodward UG-25 B2. Marine Engineering: Mechanical-hydraulic engine governor.
Woodward UG8 X19. Engine Room Watchkeeping and UMS Operations: Mechanical hydraulic governor still found on older auxiliaries.
Wool Clipper F1. Maritime History: Sailing ship in the Australian wool trade.
Woolwich Dockyard X39. Pre-1900 Maritime History: English royal dockyard founded by Henry VIII in 1512 and closed in 1869.
Work and Rest Hours Format X154. Maritime Welfare, Seafarer Charities, and MLC Rights: ILO/IMO joint guidelines model recording form used under MLC 2.3.
Work and rest hours record C2. Ship operations, crewing and technical management: STCW and MLC record.
Work and Rest Hours Records X40. Tanker Vetting, SIRE and VIQ: The MLC and STCW work-rest records reviewed under VIQ Chapter 3.
Work and Rest Records X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The MLC 2006-required records cross-referenced with logbooks during SIRE 2.0 inspections.
Work in Fishing Convention (ILO C188 2007) X87. Fishing Vessels and Fisheries Management: ILO Convention adopted in 2007 and in force from 16 November 2017 covering working conditions on fishing vessels.
Work permit X19. Engine Room Watchkeeping and UMS Operations: Hot work, enclosed space, electrical, and aloft permits required under SMS.
Work Restriction X41. Cruise Ship Public Health and VSP/USPH: Order limiting an ill food handler to non-food duties pending clearance to return to galley work.
Work-class ROV X65. ROVs, AUVs, USVs and Marine Robotics: Class III hydraulically powered tethered vehicle typically in the 150 to 250 horsepower range used for offshore intervention.
Workboat X59. Offshore Wind O&M, CTVs and SOVs: Generic term for small commercial vessels including CTVs, multicats, and survey craft.
Workboat Operator Simulator X144. Bridge Simulators, Engine Room Simulators, and Maritime Training Equipment: STCW Manila Amendments-aligned trainer for small craft.
Workboat Survey X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Hydrographic survey conducted from a small workboat in protected waters, typically with a shallow-water multibeam and integrated INS.
Workboat Tug X137. Harbour Tugs, Towage Operators and Tug Builders: Smaller dual-role tug used for general harbour duties beyond ship assist.
Worker Health Surveillance X118. Ship Recycling Yards, Beaches and Regulation: HKC Regulation 22 requirement for periodic medical examinations of workers exposed to asbestos and other hazards.
Worker safety committee X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: Yard level body required under HKC SRFP, including representation from cutting crews.
Worker Training Records X118. Ship Recycling Yards, Beaches and Regulation: Documentation of induction, hot-work, confined-space, and asbestos handling training maintained at the facility.
Worker Welfare Facilities X28. Ship Recycling and End-of-Life: ILO and HKC requirements covering sanitation, drinking water, canteens, and first aid.
Worker Welfare Plan, Yard X50. Ship Recycling, Demolition and Hong Kong Convention: The HKC-mandated yard provisions for worker accommodation, sanitation, medical care, and PPE.
Workers' Hostel (Alang) X118. Ship Recycling Yards, Beaches and Regulation: On-site or near-site dormitories housing approximately 25,000 to 35,000 migrant workers at peak demolition activity.
Workforce Cyber Competency X48. Maritime Cybersecurity: Set of cyber knowledge, skills, and behaviors expected of crew and shore personnel.
Workhorse Navigator X65. ROVs, AUVs, USVs and Marine Robotics: See Teledyne RDI Workhorse Navigator.
Working air X19. Engine Room Watchkeeping and UMS Operations: Compressed air at around 7 bar for general engine room use.
Working Aloft Inspection X5. Marine Surveying and Inspection: Inspection of safety arrangements for work at height.
Working anchor X3. Ship Handling, Seamanship and Deck Vocabulary: Bower anchor in regular use.
Working and Living Conditions Deficiency X66. Port State Control and Regional MOUs: 09000 series deficiency category, complementing MLC 2006 18000 series.
Working at Heights X59. Offshore Wind O&M, CTVs and SOVs: GWO BST module qualifying technicians to use harnesses and fall arrest systems on turbines.
Working Capital Facility X49. Ship Finance, Leasing and Maritime Capital Markets: Short term facility supporting day to day operations of a shipping company.
Working Cargo Gear Certificate X155. Marine Surveying Practice and Cargo Inspection: The Register of Ships' Cargo Handling Machinery (often Form 99) endorsed by the surveyor after testing and thorough examination.
Working Container X41. Cruise Ship Public Health and VSP/USPH: Smaller container into which bulk chemicals are transferred, required to be labeled with the contents.
Working Day Definition X86. Port Agency, Husbandry and Disbursement: Charter party definition of a working day affecting laytime calculation.
Working diving depth X10. Marine Biology, Fisheries and Oceanography: Operational depth limit for divers, ROVs, or submersibles.
Working Group A1. The IMO and the international regulatory framework: Subsidiary group within a committee or sub-committee tasked with specific items.
Working Group (ICES) D4. Fisheries, aquaculture, blue economy and marine resources: Scientific group preparing stock assessments and advice.
Working group on casualty analysis X163. Marine Accident Investigation Agencies and Landmark Inquiries: Correspondence and intersessional working groups of the III Sub-Committee that prepare lessons-learned outputs for adoption by IMO.
Working hatch X15. Ports, Terminals and Stevedoring: hatch currently being loaded or discharged.
Working hours X21. STCW Certificates, Crewing and Seafarer Welfare: MLC Regulation 2.3 alternative regime to rest hours, with comparable limits.
Working Hours Notice X86. Port Agency, Husbandry and Disbursement: Notice of working hours at the terminal for laytime purposes.
Working language X7. Flag State, Port State Control and Detention Vocabulary: SOLAS V/14 requirement, often verified in PSC under code 10.
Working language (Polar Code) X27. Polar Code, Ice Navigation and Polar Operations: PWOM and key procedures must be in the ship's working language.
Working language (SOLAS V/14) X36. Shipboard Medical, Telemedicine and Seafarer Health: Ship's working language must permit effective communication including in medical emergencies.
Working line X15. Ports, Terminals and Stevedoring: stevedore line of containers being moved.
Working Load Limit (WLL) X9. Cargo Securing, Lashing and Stability Vocabulary: Lifting equipment term; should not be confused with MSL.
Working Pressure X20. LNG Operations and Custody Transfer: Operating tank pressure typically 0.07 to 0.25 barg on membrane and Moss.
Working solution (chemical BWMS) X18. Ballast Water, Biofouling and Antifouling: Diluted active substance solution dosed into ballast water.
Working Stress Design X8. IACS, Class Rules and Class Notations: scantling philosophy used in pre-CSR rules, superseded by partial safety factors in CSR-H.
Working time X6. Container, Intermodal and Trade Codes: Hours during which a terminal operates.
Working Waterfront Heritage F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Living maritime industrial heritage districts.
Workington Cable Landing X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: UK landfall for the Western HVDC Link between Scotland and England.
Workman M-Values X82. Saturation Diving and Offshore Diving Operations: Maximum allowable supersaturation ratios from Robert Workman's tables.
Workman's compensation X21. STCW Certificates, Crewing and Seafarer Welfare: Coverage under MLC Regulation 4.2 for injury or death attributable to employment.
Workover X14. Offshore Oil and Gas Marine Operations: Repair or upgrade intervention on a producing well.
Workover Riser X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Riser system used to perform completion and workover activities on subsea wells.
Workplace Air Monitoring X28. Ship Recycling and End-of-Life: Sampling for asbestos, lead, and welding fume in worker breathing zones.
Workplace Exposure Limit X75. IMDG Code, Classes, Packing and Segregation: National hygiene limit such as OSHA PEL or ACGIH TLV; supports planning but is not an IMDG parameter.
Workplace Violence (Maritime) E1. Maritime security, geopolitics and risk: ILO-recognized risk including armed boarding.
Workscope Addition X113. Drydock and Ship Repair Yards: Additional items identified during drydock arrival inspection and added to the agreed repair specification with rate impact.
Workship X79. Tugs and Towage Industry: Offshore support vessel performing construction, diving, and standby duties, often grouped within tug operator fleets.
Workshop container X59. Offshore Wind O&M, CTVs and SOVs: Tool and parts container deployed to wind farms aboard SOVs to support repair campaigns.
Workshop survey of equipment X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: Sampling and analysis program performed on removable items to confirm their IHM classification.
Workshop, panel X58. Shipbuilding Yards and Construction: Fabrication shop housing the panel line.
Workstation X168. Bridge Electronics: Radar, ECDIS, GMDSS, and IBS: ECDIS or radar console designed as a multifunction node within an IBS.
Workstation Hardening X48. Maritime Cybersecurity: Application of security configuration to shipboard PCs including ECDIS and loading computer workstations.
World Bank CPPI X138. Global Container Terminal Operators and Port Equipment: Container Port Performance Index, joint publication with S and P Global Market Intelligence, latest 2023 edition ranked Yangshan first and Salalah second.
World Bunkering Conference X119. Maritime Conferences, Trade Shows and Awards: Annual flagship conference of the International Bunker Industry Association (IBIA), held since 1992 in rotating ports.
World Cable Submarine Database (TeleGeography) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Subscription database tracking submarine cable systems, routes, and capacities.
World class X24. Cruise, Passenger Ship and Ferry Operations: MSC Cruises LNG-fueled class led by MSC World Europa.
World Class MSC X164. Cruise Industry, Brands, Ship Classes, and Terminals: An MSC Cruises class of three planned ships including MSC World Europa, MSC World America, and MSC World Asia.
World Coal Leaders Network X119. Maritime Conferences, Trade Shows and Awards: Annual coal industry event with dry bulk shipping focus held in Barcelona.
World Container Index Forum X119. Maritime Conferences, Trade Shows and Awards: Annual Drewry container market event held in London.
World cruise X64. Cruise Industry Operators, Brands and Ships: Multi-month itinerary circumnavigating the globe, commonly offered by Cunard, Holland America, Princess, and Viking.
World Customs Organization Annual Symposium X119. Maritime Conferences, Trade Shows and Awards: Annual Brussels customs symposium with maritime supply chain track.
World Dredging Congress (WODCON) X119. Maritime Conferences, Trade Shows and Awards: Triennial WEDA event, founded 1967.
World Explorer X97. Polar Expedition Cruise and IAATO Operations: 172 PAX expedition ship chartered by Quark Expeditions and other operators.
World Fishing Exhibition X119. Maritime Conferences, Trade Shows and Awards: Periodic global fisheries trade fair held in Vigo and Spain.
World Fleet Register X71. Shipbrokers and Brokerage Firms: Vessel and ownership database produced by Clarksons Research.
World Fuel Services WFS Marine X72. Bunkering Hubs and Bunker Suppliers: Legacy name of the marine fuels business of World Fuel Services Corporation, now operating as Avior Marine.
World Geodetic System 1984 (WGS84) F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Standard geodetic datum used in GPS.
World Hydrogen MEA X119. Maritime Conferences, Trade Shows and Awards: Annual Middle East hydrogen conference with shipping segment.
World Islands X124. Dredging Industry and Reclamation Contractors: Nakheel reclamation 2003-2008 of 300 artificial islands totalling 9.34 km2 off Dubai, executed by Van Oord and partners.
World Kinect X149. Marine Fuels, Bunkering, and Alternative Fuels: The rebranded parent of World Fuel Services, active in marine bunker trading and supply.
World Kinect Energy Services X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Current name for the former World Fuel Services group.
World LNG Awards X119. Maritime Conferences, Trade Shows and Awards: Annual recognition presented at the World LNG Summit.
World LNG Summit X119. Maritime Conferences, Trade Shows and Awards: Annual gas industry summit organized by dmg events since 1999, held in major LNG hubs.
World Magnetic Model X73. Marine Hydrography, Charting and ENC: WMM, the US-UK joint model used to compute magnetic variation values on charts.
World Magnetic Model (WMM) X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Joint NGA and BGS magnetic field model updated every five years, used for compass variation on ENCs and paper charts.
World Maritime Day F3. Seafaring Life, Education, Professions and Institutions: Annual IMO commemoration on the last Thursday of September.
World Maritime Merchant Forum X119. Maritime Conferences, Trade Shows and Awards: Annual Hong Kong maritime conference.
World Maritime Rescue Congress X119. Maritime Conferences, Trade Shows and Awards: Quadrennial IMRF event since 1924, dedicated to search and rescue.
World Maritime Technology Conference X30. Tug Operations and Harbour Towage: International gathering of naval architects and marine engineers covering tug technology.
World Maritime University X55. Marine Simulators, Training and Maritime Academies: IMO postgraduate institution in Malmo, Sweden, offering Master's and Ph.D. programs in maritime affairs.
World Maritime University (WMU) X160. Maritime Academies, Universities, and STCW Certification: IMO postgraduate university in Malmo Sweden founded in 1983 offering MSc and PhD programs in maritime affairs.
World Maritime University Symposium X119. Maritime Conferences, Trade Shows and Awards: Annual academic symposium at WMU Malmo.
World Navigator X97. Polar Expedition Cruise and IAATO Operations: Atlas Ocean Voyages expedition yacht delivered in 2021 with 196 PAX.
World Ocean Circulation Experiment (WOCE) D1. Physical and chemical oceanography and marine meteorology: 1990s international program that produced global hydrographic and tracer datasets.
World Ocean Council Sustainable Ocean Summit X119. Maritime Conferences, Trade Shows and Awards: Annual cross-industry ocean sustainability conference since 2010.
World Ocean Database (WOD) D1. Physical and chemical oceanography and marine meteorology: NOAA collection of in situ ocean profile data.
World Petroleum Congress X119. Maritime Conferences, Trade Shows and Awards: Triennial WPC global gathering, founded 1933.
World Ports Conference (IAPH) X119. Maritime Conferences, Trade Shows and Awards: Biennial conference of the International Association of Ports and Harbors.
World Sailing F4. Recreational Boating, Yachting and Sport: Sport's international governing body, founded 1907 as IYRU.