Glossary

Maritime glossary, terms beginning with V

All maritime glossary terms that begin with the letter V, drawn from every subject section. 1066 entries.

Showing 250 of 1066 terms (page 1 of 5).

V Codes X75. IMDG Code, Classes, Packing and Segregation: IMDG bulk container codes such as V1 and V2 in 4.3 specifying allowable bulk transport modes.
V-band X68. Maritime Satcom and Telecommunications: Satellite frequency band above Ka used for some feeder links and considered for future high-capacity systems.
V-belt drive B2. Marine Engineering: Belt drive on auxiliary engines for water pumps and alternators.
V.Group X29. Ship Sale and Purchase, Management Contracts and Valuation: Parent of V.Ships, world's largest third-party ship manager.
V.Ships X29. Ship Sale and Purchase, Management Contracts and Valuation: Operating brand of V.Group, multiple regional offices.
V.Ships Asia X29. Ship Sale and Purchase, Management Contracts and Valuation: Asian arm of V.Group based in Singapore.
V.Ships Training Centres X160. Maritime Academies, Universities, and STCW Certification: V.Group operated cadet and officer training centers in Manila, Mumbai, and Latvia for V.Ships managed fleet.
V&A Cruise Terminal X164. Cruise Industry, Brands, Ship Classes, and Terminals: The Cape Town cruise terminal at the Victoria and Alfred Waterfront, operated by V&A Waterfront and Transnet National Ports Authority.
V12 (MTU) X90. Marine Engine Specific Model Enumeration: V configuration twelve-cylinder layout offered across MTU Series 396, 2000, and 4000 high-speed marine diesels.
V16 (MTU) X90. Marine Engine Specific Model Enumeration: V configuration sixteen-cylinder layout offered across MTU Series 396, 2000, and 4000 high-speed marine diesels.
V20 (MTU) X90. Marine Engine Specific Model Enumeration: V configuration twenty-cylinder layout offered in MTU Series 4000 high-speed marine diesels.
V32/40 (MAN) X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions V configuration four-stroke medium-speed engine with 320 millimeter bore and 400 millimeter stroke.
V51/60DF (MAN) X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions V configuration four-stroke medium-speed dual-fuel engine with 510 millimeter bore and 600 millimeter stroke.
Vaasa Novia Maritime Engineering Program X121. Maritime Education, Academies and Universities: Finnish marine engineering BEng at Novia Vaasa campus.
Vaasa works X90. Marine Engine Specific Model Enumeration: Wartsila headquarters site for marine four-stroke engine engineering and assembly in Finland.
VAB X114. Maritime Arbitration and Shipping Law Firms: Vesselink Arbitration Board reference in academic literature.
VAC Sample (Vacuum Sample) X5. Marine Surveying and Inspection: Tank residue sample used in cargo investigations.
Vacation of Award X114. Maritime Arbitration and Shipping Law Firms: United States Federal Arbitration Act remedy under Section 10 of Title 9 US Code.
Vacatur (US) X152. Maritime Arbitration and Dispute Resolution: US term for setting aside an award under section 10 FAA on grounds including corruption, fraud, evident partiality, and exceeding powers.
Vaccination record X36. Shipboard Medical, Telemedicine and Seafarer Health: Yellow Card (ICVP) plus owner-held immunization log.
Vaccine cold chain X26. Reefer Containers and Cold Chain Logistics: 2 to 8 C standard; -20 C frozen; -70 C ultra-cold for Pfizer-BioNTech COVID-19 vaccine.
Vaccine reefer carriage X70. Reefer Containers and Cold Chain Shipping: Pharmaceutical product shipped within validated temperature ranges, commonly plus two to plus eight degrees Celsius, or in ultra-low freezers for selected vaccines.
Vacuum Blast X88. Marine Surface Preparation and Coatings Application: Surface preparation method covered by ISO 8504-2 in which the blast nozzle is surrounded by a shroud connected to a vacuum that recovers spent abrasive and debris.
Vacuum blasting X45. Marine Paints, Coatings and Antifouling: Closed-loop blasting and recovery system used for environmental compliance and small areas.
Vacuum Box Test X5. Marine Surveying and Inspection: NDT method for weld tightness verification using a vacuum box.
Vacuum Breaker X41. Cruise Ship Public Health and VSP/USPH: Device installed downstream of the last shutoff valve to prevent back-siphonage from hoses and outlets.
Vacuum Circuit Breaker X67. Marine Electrical Systems and Shore Power: Medium-voltage breaker in which contacts interrupt current within an evacuated bottle, standard on marine MV systems.
Vacuum Collection Unit X63. Marine Auxiliary Machinery and Pumps: Sewage vacuum system pulling toilet effluent to the collecting tank by air pressure differential.
Vacuum condenser X19. Engine Room Watchkeeping and UMS Operations: Condenser operating below atmospheric pressure on turbine exhaust.
Vacuum Correction X115. Marine Bunker and Cargo Surveying: Conversion between mass in air and mass in vacuum for fiscal and custody-transfer purposes.
Vacuum Evaporator X63. Marine Auxiliary Machinery and Pumps: Fresh water generator operating below atmospheric pressure to lower the boiling temperature.
Vacuum gas oil X61. Marine Lubricants and Cylinder Oils: Refinery cut used as feedstock for many lubricant base oils.
Vacuum Gas Oil (VGO) X1. Cargo Science, Commodities and Cargo Care: Refinery feedstock; dirty product cargo.
Vacuum Insulation X75. IMDG Code, Classes, Packing and Segregation: Insulation method used in closed cryogenic receptacles and refrigerated tank containers.
Vacuum line X56. LNG/LPG Carriers and IGC Code: Vapor return line operating below atmospheric pressure used in some LPG cargo systems to manage tank pressure during discharge.
Vacuum mattress X36. Shipboard Medical, Telemedicine and Seafarer Health: Bead-filled body immobilizer for spinal injury transport.
Vacuum mooring X15. Ports, Terminals and Stevedoring: see Cavotec MoorMaster.
Vacuum Pressure X20. LNG Operations and Custody Transfer: Negative tank gauge limit per IGC, typically minus 1 kPa, monitored to prevent membrane collapse on Moss/membrane.
Vacuum Relief X75. IMDG Code, Classes, Packing and Segregation: Device fitted to tanks to prevent collapse under partial vacuum during cooling or unloading.
Vacuum sewage X19. Engine Room Watchkeeping and UMS Operations: Sewage collection system using vacuum transport, common on cruise ships.
Vacuum Tank X167. Major Salvage Companies, Wreck Removals, and Equipment: Recovery tank that uses negative pressure to draw oil and water mixture from a wreck through a hot tap connection.
Vacuum Test X75. IMDG Code, Classes, Packing and Segregation: Test on certain packagings to verify integrity under pressure differential.
Vacuum testing (tightness) B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Box test for fillet welds.
Vacuum Toilet X63. Marine Auxiliary Machinery and Pumps: Toilet fixture using small water volume and vacuum to transport black water.
Vacuum-pack beef X26. Reefer Containers and Cold Chain Logistics: Primal cuts in oxygen-barrier film; 60 to 120 day chilled shelf life.
Vacuum-pad alignment (laser) X38. Propellers, Stern Gear and Shaft Lines: Laser alignment with vacuum-mounted targets on flanges and bearings.
Vagn turbine X57. Ocean Energy Beyond Wind: Generic reference to small-scale tidal turbine prototypes evaluated in Nordic test sites.
Vagner X123. Offshore Wind Installation Vessels and Operators: GeoSea jack-up vessel re-flagged and rebranded under DEME consolidation.
Vahine X128. Sail Training Ships and Tall Ship Associations: Several French built tall ships have used the name; Class B participants in early Mediterranean STI events.
Vahterus Marine X137. Harbour Tugs, Towage Operators and Tug Builders: Finnish marine engineering supplier focused on heat exchanger systems aboard tugs.
Vaisala X88. Marine Surface Preparation and Coatings Application: Finnish manufacturer of meteorological and humidity measurement instruments including the HM41 handheld humidity and temperature meter.
Vaisala WMT700 X89. ECDIS and Bridge Equipment Makers: Ultrasonic anemometer from Vaisala used as a marine wind sensor.
Vajoliroja X125. Superyacht Industry, Builders and Brokers: Wally 50 m sailing yacht.
Vajra-class X130. National Coast Guards and Cutter Fleets: Indian Coast Guard 98-meter offshore patrol vessel built by Larsen and Toubro, six hulls commissioned 2017-2023, lead ship ICGS Vajra.
Valaris X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: London-headquartered offshore drilling contractor formed from the Ensco-Rowan merger and post-bankruptcy restructuring.
Valaris DS-15 X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Newbuild drillship in the Valaris fleet, formerly Atwood Archer.
Valaris DS-4 X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Drillship in the Valaris fleet, formerly Ensco DS-4.
Valaris MS-1 X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Harsh-environment semisubmersible in the Valaris fleet, formerly Atwood Osprey.
Valdez X27. Polar Code, Ice Navigation and Polar Operations: US Alaskan port and southern terminus of TAPS, subject to OPA 90 escort requirements.
Vale Tubarao X44. Shipping Indices, FFAs and Freight Markets: Brazilian iron ore export complex anchoring the Atlantic side of the C3 Capesize voyage.
Valemax B5. Ship Types and Individual Vessels: 400,000 DWT VLOC built for Vale/China iron ore trade.
Valencia X84. Yacht Racing, Regattas and Sailing Governance: Spanish city that hosted the America's Cup in 2007 and the Deed of Gift Match in 2010.
Valencia Port Authority X138. Global Container Terminal Operators and Port Equipment: Autoridad Portuaria de Valencia, owner of Mediterranean infrastructure leased to MSCTV, APM Terminals and Noatum-CSP.
Valeport Bathy2 Echosounder X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Single-beam echosounder from Valeport used for harbor and routine soundings.
Valeport miniSVP X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Portable sound velocity profiler from Valeport widely used for water-column sound speed casts.
Valeport miniSVS X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Compact sound velocity sensor from Valeport mounted at the multibeam sonar head for surface speed of sound input.
Valeport SWiFT CTD X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Profiling CTD from Valeport designed for rapid deployment from survey launches.
Valeport TideMaster X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Self-recording tide gauge from Valeport used for hydrographic tide reductions.
Valiant class X11. Naval Vessels, Warship Systems and Naval Architecture: Royal Navy SSN of 1960s.
Valiant, HMC X130. National Coast Guards and Cutter Fleets: UK Border Force 42-meter Damen Stan 4207 cutter, commissioned 2004.
Valid certification X15. Ports, Terminals and Stevedoring: confirmation that lifting gear is within inspection period.
Validation Site D5. Coastal processes, sea-level, cryosphere and ocean observation science: Reference site for assessing satellite product accuracy.
Validity period X21. STCW Certificates, Crewing and Seafarer Welfare: 5 years for most STCW CoCs and CoPs under Regulation I/11.
Validity Period, ICIHM X50. Ship Recycling, Demolition and Hong Kong Convention: The five-year maximum validity period of the International Certificate on Inventory of Hazardous Materials.
Validity Period, IRRC X50. Ship Recycling, Demolition and Hong Kong Convention: The three-month maximum validity period of the International Ready for Recycling Certificate, calibrated to imminent delivery to the yard.
Validity Window (SIRE Report) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The OCIMF-stipulated period (typically six months for VIQ inspections) within which a SIRE report supports charterer screening.
Vallejo California Maritime Academy X121. Maritime Education, Academies and Universities: See California Maritime Academy.
Valparaiso X66. Port State Control and Regional MOUs: Chilean city hosting the Acuerdo de Vina del Mar Secretariat.
Valparaiso Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Practicos de la Bahia de Valparaiso serving Chile's principal cruise and container port.
Valuation X125. Superyacht Industry, Builders and Brokers: Brokerage valuation typically referencing the Boat International index and recent comparables.
Valuation Certificate X29. Ship Sale and Purchase, Management Contracts and Valuation: Written opinion of market value issued by recognized broker.
Valuation for customs C3. Logistics, freight forwarding and multimodal trade: Customs valuation under WTO valuation agreement.
Valuation Mandate X49. Ship Finance, Leasing and Maritime Capital Markets: Engagement of an approved broker to value a vessel for covenant testing.
Valuation report C1. Commercial shipping, chartering, economics and finance: SP broker estimate of market value.
Valuation Survey X43. Marine Surveying and Warranty Surveying: A condition-based market valuation of a vessel, increasingly combined with broker desk analysis for financiers and owners.
Value of Equipment (Article 13(1)(j)) X99. Marine Salvage Awards and SCOPIC: Criterion accounting for the value of the salvor's specialized equipment.
Valued Policy X4. Marine Insurance, P&I and Claims: policy specifying the agreed value of the subject matter insured, per section 27 of the Marine Insurance Act 1906.
Valve X75. IMDG Code, Classes, Packing and Segregation: Component of cylinders and portable tanks regulated under IMDG 6.2 and 6.7 with periodic inspection.
Valve actuator X19. Engine Room Watchkeeping and UMS Operations: Pneumatic or electric actuator opening and closing process valves.
Valve Overhaul X113. Drydock and Ship Repair Yards: Drydock workscope refurbishing sea valves, ballast valves, and cargo valves with seat lapping and seal renewal.
Valve Protection X75. IMDG Code, Classes, Packing and Segregation: Cap or shroud protecting cylinder valves from impact during transport.
VAN DEN BOSCH Transporten X83. ISO Container Manufacturing and Leasing: Dutch transport company operating a large fleet of ISO tank containers and tank silos.
Van Geest Design X125. Superyacht Industry, Builders and Brokers: Naval architecture practice in the UK.
Van Oord X42. Offshore Wind Installation and Cable Lay: Dutch marine contractor active in offshore wind cable lay, foundation installation, and rock placement, operating Aeolus, Svanen, Nexus, and Boreas.
Van Oord Boreas X42. Offshore Wind Installation and Cable Lay: Van Oord next generation offshore wind installation vessel delivered for the European market.
Van Oord Offshore Wind X124. Dredging Industry and Reclamation Contractors: Subsidiary delivering balance-of-plant for European wind farms.
Van Oord Salvage Support X167. Major Salvage Companies, Wreck Removals, and Equipment: Dutch dredging contractor supplying assets to wreck and bunker removal projects.
Vanadium X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Trace metal in residual fuel; combines with sodium to cause high-temperature corrosion in turbines.
Vanadium Content X115. Marine Bunker and Cargo Surveying: Vanadium concentration in residual marine fuels determined per ISO 14597, linked to high-temperature corrosion of exhaust valves.
Vanadium Pentoxide X69. EGCS Scrubbers, SCR and Marine Air Emissions: Active phase in many SCR catalysts, requiring careful handling at end of life.
Vanadium to sodium ratio X47. Marine Fuel Quality and ISO 8217: Indicator of hot corrosion risk, traditionally targeted at three to one or higher.
Vanadium V X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: Heavy fuel oil contaminant accelerating exhaust valve seat corrosion at high temperature in the presence of sodium.
Vancouver X64. Cruise Industry Operators, Brands and Ships: Canadian cruise homeport for the Alaska season.
Vancouver Bunker Service X72. Bunkering Hubs and Bunker Suppliers: Bunker supply at the Port of Vancouver by Parkland Refining and Imperial Oil through barge delivery.
Vancouver Canada Place X164. Cruise Industry, Brands, Ship Classes, and Terminals: The Vancouver cruise terminal under the iconic sails of Canada Place, operated by VFPA and serving as the principal Canadian homeport for Alaska cruises.
Vancouver International Maritime Conference X119. Maritime Conferences, Trade Shows and Awards: Annual British Columbia event.
Vancouver Maritime Training School X121. Maritime Education, Academies and Universities: Western Marine Training, BC, Canada, Transport Canada-approved provider.
Vancouver Pilots X32. Marine Pilotage and Pilot Operations: Pacific Pilotage Authority pilots covering Vancouver and the BC coast.
Vanderbilt, Cornelius X39. Pre-1900 Maritime History: American shipping and railroad magnate (1794 to 1877), founder of the Accessory Transit Company and the New York Central system.
Vane Brothers X79. Tugs and Towage Industry: US bunker and tug operator headquartered in Baltimore with ATB and harbor operations on the East Coast and Gulf.
Vane Brothers Bunker Service X72. Bunkering Hubs and Bunker Suppliers: US east coast bunker barge operator serving Baltimore, Norfolk, Philadelphia, and New York.
Vane pump X19. Engine Room Watchkeeping and UMS Operations: Positive displacement pump with sliding vanes used for hydraulic and lube oil duties.
Vang X3. Ship Handling, Seamanship and Deck Vocabulary: Rope steadying the peak of a gaff or boom.
Vanguard class X11. Naval Vessels, Warship Systems and Naval Architecture: Royal Navy SSBN with Trident II D5.
Vanguard Reefer X136. Reefer Vessels and Cool Chain Operators: Reefer container leasing brand of Beacon Intermodal Leasing.
Vanguard USV X109. Maritime Autonomous Surface Ships and MASS Code: A vessel of the United States Navy Overlord program demonstrating sustained autonomous operation.
Vannamei Shrimp (Litopenaeus vannamei) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Pacific whiteleg shrimp, accounting for around 80% of farmed shrimp globally.
Vanning X6. Container, Intermodal and Trade Codes: North American term for stuffing a container.
Vantage Drilling X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Drilling contractor operating jackups and drillships including the Tungsten Explorer.
Vanuatu Financial Services Commission (VFSC) X117. Marine Insurance Markets, Captives and Reinsurance: Regulator of the Vanuatu captive insurance market, a small Pacific domicile.
Vanuatu Maritime Office X98. Ship Registries and Flag States: Office of the Maritime Regulator administering the Vanuatu Ship Registry from Port Vila and New York.
Vanuatu Maritime Services Limited X7. Flag State, Port State Control and Detention Vocabulary: Flag administration for Vanuatu, headquartered in New York.
Vanuatu PSC X66. Port State Control and Regional MOUs: Tokyo MOU member State.
Vapor Arm X20. LNG Operations and Custody Transfer: Cryogenic loading arm returning vapor displaced during loading to shore BOG handling.
Vapor Compression Distiller X63. Marine Auxiliary Machinery and Pumps: Fresh water generator that compresses vapor to provide its own heat source.
Vapor Crossover X20. LNG Operations and Custody Transfer: Header on jetty enabling vapor return without dedicated arm.
Vapor degreasing X45. Marine Paints, Coatings and Antifouling: Solvent cleaning using vapor of chlorinated or hydrocarbon solvent.
Vapor Dome X20. LNG Operations and Custody Transfer: Top tank dome through which vapor line and safety valves are installed.
Vapor Emission Control Survey X5. Marine Surveying and Inspection: USCG and class verification of vapor recovery systems.
Vapor Emission Control System X93. IBC Code and Chemical Tanker Operations: Equipment recovering or controlling cargo vapors during loading, mandated for benzene cargoes under USCG rules.
Vapor Header X20. LNG Operations and Custody Transfer: Common deck line connecting tank vapor domes to compressors and manifold.
Vapor Lock X115. Marine Bunker and Cargo Surveying: Closed device permitting insertion of sounding or sampling equipment into pressurized or inerted tanks without venting.
Vapor Lock Sample X5. Marine Surveying and Inspection: Tanker sample drawn through vapor lock without opening tank.
Vapor Power X63. Marine Auxiliary Machinery and Pumps: US manufacturer of compact watertube package boilers used in marine and industrial applications.
Vapor Power TPS X63. Marine Auxiliary Machinery and Pumps: Vapor Power coil-type package steam generator.
Vapor pressure X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Pressure exerted by fuel vapors at a given temperature, relevant for methanol and LNG.
Vapor Pressure (RVP) X1. Cargo Science, Commodities and Cargo Care: Reid vapor pressure of gasoline and crudes.
Vapor pressure (water) B1. Naval Architecture: Pressure at which boiling occurs, relevant to cavitation.
Vapor Recovery X103. US Inland Waterway Towing and Barge: A system that returns cargo vapors from a tank barge to shore facilities during transfer.
Vapor Recovery Unit X141. Marine Salvage Industry and Wreck Removal Contractors: Equipment connected to receiving tank during fuel transfer to prevent gas release.
Vapor return X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Return line carrying displaced vapors during LNG, methanol, or hot residual bunkering.
Vapor Return Blower X20. LNG Operations and Custody Transfer: Shore blower returning BOG from ship vapor manifold during loading.
Vapor return line B2. Marine Engineering: Cargo gas return between ship and shore on tankers/gas carriers.
Vapor Return Line (VRL) X20. LNG Operations and Custody Transfer: Pipework from ship's vapor manifold to shore during loading or discharge.
Vapor-compression cycle X70. Reefer Containers and Cold Chain Shipping: Thermodynamic cycle used in reefer machinery, comprising compressor, condenser, expansion device, and evaporator.
Vapour Density X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: A property informing Class 2.3 toxic gas stowage and ventilation planning; gases denser than air collect in low spaces.
Vapour Pressure (Tank Design) X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: The reference vapour pressure used in portable tank design per 6.7.2 and 6.7.3.
Vapour return line C2. Ship operations, crewing and technical management: Pipeline returning cargo vapours to shore.
Vaquita X10. Marine Biology, Fisheries and Oceanography: *Phocoena sinus*, the world's most endangered cetacean, endemic to the Gulf of California.
VAR (Value Added Reseller) X68. Maritime Satcom and Telecommunications: Channel partner that integrates and resells maritime satcom services.
Varanasi terminal X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: The upstream terminal of National Waterway 1 in India, inaugurated in November 2018 as the multimodal terminal at Varanasi.
Vard X35. Yacht and Superyacht Industry: Norwegian shipbuilder, builder of REV Ocean.
Vard Brattvaag X109. Maritime Autonomous Surface Ships and MASS Code: The Norwegian shipyard that built the Yara Birkeland and delivered the ship in November 2020.
Vard Group X58. Shipbuilding Yards and Construction: Norwegian shipbuilder owned by Fincantieri, building offshore and specialized vessels.
Vard Remote Operations Center X109. Maritime Autonomous Surface Ships and MASS Code: A remote operations center operated in support of the Yara Birkeland and associated vessels.
Vargon X124. Dredging Industry and Reclamation Contractors: Boskalis TSHD.
Vargronn X123. Offshore Wind Installation Vessels and Operators: Norwegian developer joint venture between Hitecvision and Plenitude, partner with SSE and Equinor on Dogger Bank C.
Variable depth channel C4. Ports, terminals and coastal/marine civil engineering: Channel with stepped or graded depths.
Variable Depth Sonar X11. Naval Vessels, Warship Systems and Naval Architecture: Body-towed sonar that can be positioned in different acoustic layers.
Variable Depth Sonar (VDS) X106. Naval Surface Combatants: Towed body containing a sonar transducer lowered below the thermocline for improved detection.
Variable Displacement Pump X63. Marine Auxiliary Machinery and Pumps: Pump with adjustable per-revolution volume, common in axial piston hydraulic pumps.
Variable Frequency Drive X67. Marine Electrical Systems and Shore Power: Power electronic drive controlling motor speed by varying voltage and frequency.
Variable Frequency Drive (VFD) X20. LNG Operations and Custody Transfer: Speed control for cargo and send-out pumps reducing electrical consumption.
Variable Geometry Turbocharger (VGT) B2. Marine Engineering: Turbocharger with variable nozzle vanes.
Variable injection timing X19. Engine Room Watchkeeping and UMS Operations: VIT, fuel pump control adjusting injection timing for load and fuel quality.
Variable injection timing (VIT) B2. Marine Engineering: System adjusting fuel injection timing with load.
Variable Speed Diesel X67. Marine Electrical Systems and Shore Power: Genset arrangement where the engine speed varies with load to optimize fuel consumption, requiring power electronic conversion.
Variable Turbine Area VTA X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: ABB and MAN turbocharger feature with adjustable nozzle ring vanes for improved part-load performance and Tier II tuning.
Variable Wind Coast D1. Physical and chemical oceanography and marine meteorology: Coastline where winds vary widely on synoptic timescales.
Variable-pitch propeller X38. Propellers, Stern Gear and Shaft Lines: Synonym for CPP, with hydraulically variable blade pitch.
Variance Memorandum X86. Port Agency, Husbandry and Disbursement: Memorandum explaining significant variances between PDA and FDA.
Variation F5. The Reference Layer: Glossary, Units, Signals and Information Sources: See magnetic variation; difference between true and magnetic north.
Variation (magnetic) B3. Nautical Science: Angle between true and magnetic north.
Variation Diagram F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Annual chart of magnetic isogonic lines.
Variation Margin X44. Shipping Indices, FFAs and Freight Markets: Daily cash flow exchanged between FFA counterparties and clearing house reflecting mark-to-market changes.
Variation of Charter X51. Maritime Arbitration, Law and BIMCO Clauses: A binding amendment to charter terms, requiring consideration and proper authority.
Variation order C1. Commercial shipping, chartering, economics and finance: Change order to a shipbuilding or repair contract.
Varicella vaccine X36. Shipboard Medical, Telemedicine and Seafarer Health: Chickenpox vaccine in some pre-employment schedules.
VARO Energy X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Vitol and Carlyle-backed downstream group operating refining and storage in the ARA region.
Varuna (INS) X128. Sail Training Ships and Tall Ship Associations: Earlier Indian Navy sail training schooner, predecessor to Tarangini.
Varyag X106. Naval Surface Combatants: Russian Navy Slava-class guided-missile cruiser, third of class and flagship of the Pacific Fleet.
Vasa F1. Maritime History: Swedish royal warship sunk on her maiden voyage in 1628, salvaged 1961.
Vasa Museum F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Stockholm museum housing the salvaged 1628 royal warship.
Vasco da Gama F1. Maritime History: Portuguese navigator who reached India by sea in 1498.
Vasco da Gama Cable X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: 5,200 km submarine cable connecting Lisbon, Sopelana, and the UK along the European Atlantic coast.
Vasco da Gama class X11. Naval Vessels, Warship Systems and Naval Architecture: Portuguese Navy MEKO 200 frigate.
Vasiliy Bykov-class Patrol X91. Submarines and Submarine Cable Systems: Russian surface patrol class operating in regions also patrolled by submarines; not a submarine class itself.
Vasopressor X36. Shipboard Medical, Telemedicine and Seafarer Health: Injectable vasoconstrictor (e.g., adrenaline) for shock; advanced use only.
VAT Exempt Stores X120. Marine Catering, Provisions and Ship Chandlers: Chandler invoices for international voyages typically zero rated under EU VAT Directive Article 148 (a) (b).
VAT yacht leasing X125. Superyacht Industry, Builders and Brokers: Maltese and Italian schemes that historically lowered effective VAT for cruising yachts.
Vattenfall X42. Offshore Wind Installation and Cable Lay: Swedish state utility with offshore wind portfolio including Horns Rev 1 and 2, Kriegers Flak, Hollandse Kust Zuid, and Norfolk Vanguard.
Vauban, Sebastien Le Prestre de X39. Pre-1900 Maritime History: French military engineer who fortified Brest, Toulon, and other royal arsenals from the 1670s.
Vaygach X52. Polar Code, Arctic and Antarctic Shipping: Russian shallow-draft nuclear icebreaker built in 1990, sister of Taymyr.
Vayla X73. Marine Hydrography, Charting and ENC: The Finnish Transport Infrastructure Agency, the Finnish HO.
VB10000 X167. Major Salvage Companies, Wreck Removals, and Equipment: Versabar twin hulled catamaran heavy lift vessel with 7,500 short ton lift capacity per gantry, used to remove offshore platforms and recently the Dali Francis Scott Key Bridge sections.
VBA X15. Ports, Terminals and Stevedoring: Vessel Berthing Aid, laser-based docking system.
VBM X54. Naval Architecture Software and IACS Rules: Vertical Bending Moment, primary load component in CSR-BC+OT and IACS UR S11.
VBMS X42. Offshore Wind Installation and Cable Lay: Former Van Oord cable installation subsidiary now reintegrated into Van Oord.
VBMS (Visserij-Beheers Mariene Spatial) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Dutch fishery management framework integrated with North Sea MSP.
VBPN (Virtual Bunker Pumping Notice) X149. Marine Fuels, Bunkering, and Alternative Fuels: Increasingly used digital bunker delivery documentation, recognized in Singapore's e-BDN initiative from 2023.
VBQ (Vessel Background Questionnaire) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: A vessel-specific operator-completed background form used in vetting.
VBS X15. Ports, Terminals and Stevedoring: Vehicle Booking System for truckers.
VBSS (Visit, Board, Search, Seizure) E1. Maritime security, geopolitics and risk: Naval boarding tactic for compliant/non-compliant vessels.
VBW X33. Inland Navigation and Barge Operations: Verein fur europaische Binnenschifffahrt und Wasserstrassen, German inland navigation industry association.
VC X6. Container, Intermodal and Trade Codes: Vessel call.
VC Distiller X63. Marine Auxiliary Machinery and Pumps: Vapor compression fresh water generator producing distillate efficiently.
VCB vertical center of buoyancy X162. Naval Architecture, Stability, Resistance, and Structural Design: Synonym for KB measured from the baseline.
VCF (Volume Correction Factor) X5. Marine Surveying and Inspection: Factor correcting petroleum volume to 15 degrees C.
VCG vertical center of gravity X162. Naval Architecture, Stability, Resistance, and Structural Design: Synonym for KG.
VCLT 1969 A6. Public international law of the sea: Vienna Convention on the Law of Treaties.
VCS (Verified Carbon Standard) X34. Decarbonization, Alternative Fuels and Carbon Pricing: Voluntary offset standard; not used for maritime compliance.
VDatum X129. Hydrographic Offices, Survey Vessels and Marine Cartography: NOAA software providing transformations among approximately 36 vertical datums in US waters, key to consolidating survey data with shoreline products.
VDES X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: VHF Data Exchange System, ITU-R M.2092, an evolution of AIS adding ASM and VHF Data Exchange channels with satellite component.
VDES (VHF Data Exchange System) E3. Technology, digitalization and smart shipping: ITU R-M.2092 next-generation VHF data.
VDL X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: VHF Data Link; the shared radio medium used by AIS and VDES.
VDL AEC X69. EGCS Scrubbers, SCR and Marine Air Emissions: Dutch industrial supplier active in marine and industrial emission control equipment.
VDL AGV X169. Container Terminal Cranes, Yard Equipment, and Lashing: Automated guided vehicle from VDL Steelweld in the Netherlands, used at automated container terminals.
VDL Containersystemen X46. Container Terminal Operations: A Dutch industrial group within the VDL family that has supplied AGVs and other heavy vehicle systems to container terminals.
VDL Industrial Products X138. Global Container Terminal Operators and Port Equipment: Dutch manufacturer of AGVs deployed at Rotterdam APM Maasvlakte II since 2015.
VDM/VDO X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: NMEA 0183 sentences for AIS received and own-vessel data.
VDR A2. Maritime safety legislation: SOLAS and its codes: Voyage Data Recorder, required under SOLAS V/20.
VDR (Voyage Data Recorder) B3. Nautical Science: SOLAS V/20 mandated black box per MSC.333(90).
VDR download protocol X163. Marine Accident Investigation Agencies and Landmark Inquiries: Procedures for forensic recovery, integrity protection, and analysis of voyage data recorder content used by national investigation bodies and recommended by IMO.
VDR Fixed Capsule X95. GMDSS Equipment and Survival Craft Communications: Fire and shock protected capsule mounted in a position likely to survive a sinking, retaining the last 12 to 48 hours of recorded data.
VDR Float Free Capsule X95. GMDSS Equipment and Survival Craft Communications: Capsule fitted with a hydrostatic release unit designed to float free of a sinking vessel and broadcast a 406 MHz locating signal.
VDR Performance Standards X158. IMO Conventions, Protocols, Codes, and Resolutions: Voyage Data Recorder standards in Resolution MSC.333(90), made mandatory under SOLAS V/20.
VDR Seafarer Welfare Use X154. Maritime Welfare, Seafarer Charities, and MLC Rights: Voyage data recorder material occasionally used in welfare investigations after casualty.
VDR Tampering X48. Maritime Cybersecurity: Manipulation of Voyage Data Recorder contents or interfaces, with implications for casualty investigation integrity.
VDS X11. Naval Vessels, Warship Systems and Naval Architecture: Variable Depth Sonar.
VDS body X77. Naval Mine Warfare and Mine Countermeasures: The towed fish containing the transducers of a variable-depth sonar.
VEC X19. Engine Room Watchkeeping and UMS Operations: Variable exhaust valve closing on slow speed engines for part load efficiency.
VeChain Test X113. Drydock and Ship Repair Yards: Not applicable; placeholder removed.
VECS X93. IBC Code and Chemical Tanker Operations: Vapor Emission Control System; the abbreviation used in US Coast Guard tank vessel regulations.
Vector X18. Ballast Water, Biofouling and Antifouling: Pathway by which an organism is transported; ballast water and hull fouling are dominant marine vectors.
Vector (Invasive) D3. Marine environmental science, pollution and conservation: Pathway by which invasive species are transported.
Vector Cathodic Protection X100. Marine Cathodic Protection and Anodes: A commercial supplier of cathodic protection products and services.
Vector Chart F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Layered digital chart used in ECDIS.
Vector Group X67. Marine Electrical Systems and Shore Power: Transformer winding configuration designation such as Dyn11 used on marine transformers.
Vector inverter X42. Offshore Wind Installation and Cable Lay: Reference power electronics component.
Veendam X64. Cruise Industry Operators, Brands and Ships: Former Holland America Line ship retired in 2020.
Veer X3. Ship Handling, Seamanship and Deck Vocabulary: Pay out cable; shift of wind in a clockwise direction in the Northern Hemisphere.
Veer and haul X3. Ship Handling, Seamanship and Deck Vocabulary: Alternately slack and pull on a rope.
Veering (wind) X16. Nautical Science, Navigation and COLREGs: Clockwise change of wind direction in the Northern Hemisphere.
Veering Chain X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral: Paying out anchor cable in a controlled manner using the windlass.
VEF X115. Marine Bunker and Cargo Surveying: Vessel Experience Factor calculated from historical reconciliations between shore and ship figures, used to correct vessel measurements.
Vega X27. Polar Code, Ice Navigation and Polar Operations: Steamship in which Nordenskiold completed the first Northeast Passage in 1878-1879.
Vega Asset Management X49. Ship Finance, Leasing and Maritime Capital Markets: Norwegian and London linked manager active in shipping credit and equity.
Vega Exposure X44. Shipping Indices, FFAs and Freight Markets: Option-on-FFA sensitivity to changes in implied volatility, managed by tanker and dry options books.
Vega Gamleby X128. Sail Training Ships and Tall Ship Associations: Swedish three masted schooner built 1909, 35 m length, used by youth sail training association in Smaland.
Vegetable Oil X120. Marine Catering, Provisions and Ship Chandlers: IMPA 550402 1 L bottle or 5 L jerrycan, dry stores staple.