Glossary

Maritime glossary, terms beginning with V (page 4)

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

Showing 250 of 1066 terms (page 4 of 5).

Visual Check X28. Ship Recycling and End-of-Life: Onboard inspection of suspected hazardous materials by the HazMat Expert.
Visual Check, IHM Development X50. Ship Recycling, Demolition and Hong Kong Convention: The non-intrusive inspection component of IHM development, complemented by sampling checks.
Visual Display Unit X82. Saturation Diving and Offshore Diving Operations: Monitor in the dive control room showing bell and diver helmet video.
Visual Examination X5. Marine Surveying and Inspection: Initial method of survey using sight aided by lighting and access.
Visual fix B3. Nautical Science: Position from two or more visual bearings.
Visual identification (VI) X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: The first stage of an IHM survey using existing drawings and walkthrough inspections to identify hazardous materials.
Visual impact assessment X57. Ocean Energy Beyond Wind: Component of marine renewable consenting that addresses seascape and coastal landscape effects.
Visual inspection X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Quick check of fuel sample for color, water, and visible solids before lab testing.
Visual Inspection (VT) B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Welder visual inspection per ISO 17637.
Visual Lookout X80. Maritime Search and Rescue Coordination: Crew member maintaining visual search from an SRU.
Visual Sampling Check Plan VSCP X28. Ship Recycling and End-of-Life: IHM Part I plan combining visual checks and sampling locations.
Visual standards X165. Marine Coatings, Antifouling, and Hull Husbandry: ISO 8501-1 photographic comparators showing prepared steel surfaces at each grade.
Visual Wall Wash X155. Marine Surveying Practice and Cargo Inspection: A surveyor inspection of cargo tank walls after solvent or detergent washing to verify cleanliness for sensitive parcels.
Vita Food Products Inc v Unus Shipping Co Ltd [1939] AC 277 X143. Landmark Maritime Law Cases and Doctrines: Privy Council on choice of law in bills of lading.
Vital System X48. Maritime Cybersecurity: System whose failure would compromise safety of life, ship, or environment.
Vitamin Premix (Bread) X120. Marine Catering, Provisions and Ship Chandlers: Folic acid and iron fortification permitted under EC Regulation 1925/2006.
Vito FPS X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Shell Vito semisubmersible floating production system in the US Gulf of Mexico.
Vitol X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: International commodity trader and Sea Cargo Charter signatory.
Vitol Bunkers X72. Bunkering Hubs and Bunker Suppliers: Marine fuels business of Vitol with physical supply at Fujairah, Singapore, Rotterdam, Las Palmas, Panama, and Houston.
Vitol Bunkers Singapore X72. Bunkering Hubs and Bunker Suppliers: Singapore office of Vitol Bunkers with MPA bunker supplier license.
Vitol Vetting X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The Geneva-based trader's vetting function applied to its very active tanker chartering book.
Vitruvius Yachts X125. Superyacht Industry, Builders and Brokers: Philippe Briand's series of long range motoryachts, examples being Galileo G and Najiba.
Vitters Shipyard X35. Yacht and Superyacht Industry: Dutch sailing-superyacht builder in Zwartsluis.
VIV Suppression Strakes X14. Offshore Oil and Gas Marine Operations: Helical fairings on risers reducing VIV.
Viva Energy Marine X72. Bunkering Hubs and Bunker Suppliers: Australian marine fuels arm of Viva Energy supplying bunkers at Geelong, Sydney, Brisbane, and Port Hedland.
Vivacity 20 Trailer Sailer F4. Recreational Boating, Yachting and Sport: 1960s family cruiser.
VLA X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Vertical Loaded Anchor designed to resist near-vertical loads from taut-leg mooring systems.
Vlaanderen XIX X124. Dredging Industry and Reclamation Contractors: DEME backhoe dredger.
VLAC Very Large Ammonia Carrier X140. Ammonia as Marine Fuel and Hydrogen Shipping: New category of 90,000 to 100,000 m3 dedicated NH3 carriers.
Vladimir Rusanov X134. LNG and LPG Carrier Operators and Containment Systems: Arc7 ice class LNG carrier of 172,600 m3 delivered 2018 by DSME for Mitsui OSK Lines Yamal LNG fleet.
Vladivostok State Maritime University Admiral Nevelskoy X160. Maritime Academies, Universities, and STCW Certification: Russian Far Eastern federal maritime university in Vladivostok founded in 1890.
Vladivostok State University of Economics and Service Maritime X121. Maritime Education, Academies and Universities: Russian Far East maritime logistics program.
VLAN X107. Maritime Cybersecurity and OT Security: Virtual Local Area Network, a logical subdivision of a physical network.
VLAN Virtual LAN X25. Maritime Cybersecurity, OT and IT: Layer 2 segmentation of a switched network.
VLCC B5. Ship Types and Individual Vessels: Very Large Crude Carrier, 200,000-320,000 DWT.
VLCC (Very Large Crude Carrier) E4. Cruise, offshore energy and auxiliary/specialised fleets: Tanker between 200,000 and 320,000 DWT.
VLCC Berthing Plan X30. Tug Operations and Harbour Towage: Procedure assigning typically three to four tugs of 60 to 80 tonnes bollard pull each to a Very Large Crude Carrier.
VLCC Bow Slamming X96. Hull Integrity Monitoring and Strain Gauges: Bow slamming event on a very large crude carrier in heavy head seas.
VLCC broker X71. Shipbrokers and Brokerage Firms: Specialist tanker broker focused on Very Large Crude Carriers.
VLCC Casualty X60. Marine Salvage and Wreck Removal: Salvage involving very large crude carriers with significant pollution potential.
VLCC Drydock X113. Drydock and Ship Repair Yards: Drydock with internal length over 380 m and beam over 60 m capable of accepting a fully loaded very large crude carrier.
VLCC FSO Conversion X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Conversion of a very large crude carrier into a floating storage and offloading unit for field service.
VLCO2C X57. Ocean Energy Beyond Wind: Conceptual class of very large CO2 carriers under study for inter-regional offshore CCS transport.
VLCS X169. Container Terminal Cranes, Yard Equipment, and Lashing: Very Large Container Ship, a vessel class between Post-Panamax and Ultra Large Container Ship sizes.
VLEC X56. LNG/LPG Carriers and IGC Code: Very Large Ethane Carrier, a gas carrier of 85,000 cubic meters or more configured for ethane transport, exemplified by vessels serving Reliance Industries.
VLF (Very Low Frequency) X91. Submarines and Submarine Cable Systems: Radio band used for one-way communication to submerged submarines.
VLF Hi-Pot Test X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Very low-frequency dielectric test method for installed submarine power cables.
VLGC B5. Ship Types and Individual Vessels: Very Large Gas Carrier, ~84,000 m3 LPG.
VLGC (Very Large Gas Carrier) X17. Chartering, Shipbroking and Freight Trading: LPG carrier of about 70,000 to 93,000 cbm.
Vlieland Strandings F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Dutch heritage of beach-stranded vessels.
Vlissingen X35. Yacht and Superyacht Industry: Dutch port that hosts Damen Yachting and Amels.
Vlissingen HZ University of Applied Sciences Maritime Officer X121. Maritime Education, Academies and Universities: Dutch BSc Maritiem Officier program in Vlissingen, in cooperation with STC Group.
Vlissingen Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Loodswezen Scheldemonden branch serving the Western Scheldt approaches and the locks at Terneuzen.
Vlissingen Sail Training X128. Sail Training Ships and Tall Ship Associations: Dutch port hosting STI Tall Ships Races and home of the Eendracht foundation.
Vlissingen Yard X113. Drydock and Ship Repair Yards: Damen Shiprepair Vlissingen-Oost facility on the Westerschelde with multiple drydocks for large tonnage.
VLOC B5. Ship Types and Individual Vessels: Very Large Ore Carrier, 200,000-400,000 DWT.
VLOC Pilot X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Endorsement for handling Very Large Ore Carriers, common at Brazilian, Australian, and Chinese iron-ore ports.
VLR Compressor X63. Marine Auxiliary Machinery and Pumps: Designation used for vertical low pressure marine air compressors in some catalogs.
VLS X11. Naval Vessels, Warship Systems and Naval Architecture: Vertical Launching System.
VLS (Vertical Launching System) X106. Naval Surface Combatants: Below-decks missile launcher arrangement enabling rapid simultaneous firing of multiple weapons.
VLS (Volunteer Life Squad) X128. Sail Training Ships and Tall Ship Associations: Not a sail training body; excluded.
VLSFO X61. Marine Lubricants and Cylinder Oils: Very Low Sulfur Fuel Oil with sulfur content at or below 0.5 percent mass, used to meet IMO 2020 outside emission control areas.
VLSFO (Very Low Sulfur Fuel Oil) X34. Decarbonization, Alternative Fuels and Carbon Pricing: 0.50% sulfur compliant residual fuel; FuelEU's 91.16 g CO2eq/MJ reference value is broadly based on its energy and CO2 characteristics.
VLSFO (Very Low Sulphur Fuel Oil) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Residual or hybrid fuel with sulphur not exceeding 0.50% m/m for global cap compliance.
VLSFO compatibility X61. Marine Lubricants and Cylinder Oils: Behavior of a cylinder oil when used with very low sulfur fuels, where excessive BN can lead to calcium-rich deposits.
VLSFO Singapore X72. Bunkering Hubs and Bunker Suppliers: Most heavily traded VLSFO benchmark grade with MPA quality assurance under SS 600.
VLSFO Swap X44. Shipping Indices, FFAs and Freight Markets: Cleared derivative settling against very low sulphur fuel oil price assessments at Singapore, Rotterdam, or US Gulf hubs.
VLSFO-B24 X111. Methanol, Ammonia and Alternative Marine Fuels: VLSFO blend containing approximately 24 percent biofuel offered as a marine bunker grade in Singapore.
VLSFO-B30 X111. Methanol, Ammonia and Alternative Marine Fuels: VLSFO blend containing approximately 30 percent biofuel used in commercial marine bunkering.
VMDR X107. Maritime Cybersecurity and OT Security: Vulnerability Management, Detection, and Response platform from Qualys.
VME (Vulnerable Marine Ecosystem) D4. Fisheries, aquaculture, blue economy and marine resources: Sensitive deep-sea habitat protected under UNGA resolutions.
VMG Calculation F4. Recreational Boating, Yachting and Sport: Standard polar-based race-tactic tool.
VMS X74. AIS Data, Vessel Tracking and Maritime Intelligence: Vessel Monitoring System used by fisheries authorities, distinct from AIS but often integrated in compliance dashboards.
VO65 X84. Yacht Racing, Regattas and Sailing Governance: The Volvo Ocean 65 one-design offshore monohull, introduced for the 2014-2015 edition.
VO70 X84. Yacht Racing, Regattas and Sailing Governance: The Volvo Open 70 box-rule offshore monohull, used from 2005 to 2012.
VOC F1. Maritime History: Dutch East India Company, chartered 1602.
VOC (Volatile Organic Compounds) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: Compounds whose emissions from cargo of tankers are controlled in designated ports or terminals under MARPOL Annex VI Reg 15.
VOC (Vortex-Induced Oscillation Control) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Strakes or fairings installed on pipeline free spans and risers to suppress vortex-induced vibration.
VOC management X57. Ocean Energy Beyond Wind: Volatile organic compound controls relevant to CO2 capture facilities upstream of offshore transport.
VOC Management Plan X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The plan required under MARPOL Annex VI Reg 15.6 on every tanker carrying crude oil, describing the operating and maintenance procedures for the VOC control equipment.
VOC Monitoring X13. Marine Salvage and Wreck Removal: Continuous gas measurement around casualty for entry and pumping safety.
VOC Wrecks F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Dutch East India Company wrecks studied by archaeologists.
VOCs (Marine) D3. Marine environmental science, pollution and conservation: Volatile organic compounds emitted from oil cargoes and operations.
Voestalpine X92. Marine Steel Suppliers and Shipbuilding Plate: Austrian integrated steel and technology group with main steelmaking at Linz.
Voice Over IP X68. Maritime Satcom and Telecommunications: Carriage of voice services as IP packets across a satellite link.
Voice over IP (VoIP) X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents: A bridge and accommodation telephony technology that bridges OT and IT in some installations.
Void Compartment X91. Submarines and Submarine Cable Systems: Sealed empty compartment within a submarine hull for buoyancy or damage tolerance.
Voids X75. IMDG Code, Classes, Packing and Segregation: Empty spaces in cargo holds and CTUs that must be filled to prevent shifting of dangerous goods packages.
Voids Inspection X5. Marine Surveying and Inspection: Examination of void spaces for tightness and corrosion.
Voids, Stowage X1. Cargo Science, Commodities and Cargo Care: Empty spaces between cargo, often filled with dunnage.
Voima X52. Polar Code, Arctic and Antarctic Shipping: Finnish state icebreaker originally built in 1954 and extensively rebuilt, operated by Arctia.
Voith Inline Thruster B2. Marine Engineering: Tunnel thruster with permanent magnet motor.
Voith Inline Thruster (VIT) X38. Propellers, Stern Gear and Shaft Lines: Voith permanent-magnet rim-drive thruster integrated in a duct.
Voith Linear Jet X38. Propellers, Stern Gear and Shaft Lines: Voith axial pump propulsor with stator vanes and a rim, used on workboats and OPVs.
Voith Roll Stabilization (VRSTAB) X137. Harbour Tugs, Towage Operators and Tug Builders: Active roll-damping system derived from VSP technology used on some larger tugs.
Voith Schneider B2. Marine Engineering: Cycloidal propeller for tugs and ferries.
Voith Schneider Propeller X15. Ports, Terminals and Stevedoring: cycloidal propeller used on Voith Water Tractors.
Voith Schneider propulsion X77. Naval Mine Warfare and Mine Countermeasures: A cycloidal propulsion system fitted to the Sandown-class and other minehunters to provide low-speed maneuverability for hunting station-keeping.
Voith Schneider retrofit B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: VSP installation on tugs.
Voith Water Tractor X38. Propellers, Stern Gear and Shaft Lines: Tug arrangement with two VSPs forward and a skeg aft, providing 360-degree thrust direction.
Voith Water Tractor (VWT) X30. Tug Operations and Harbour Towage: Tractor tug with two VSP units forward and a skeg aft.
Voith-Schneider propeller (VSP) B1. Naval Architecture: Cycloidal vertical-axis propeller.
Volatile organic compound (VOC) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Hydrocarbon vapors released during fuel handling.
Volatile organic compounds (VOC) X149. Marine Fuels, Bunkering, and Alternative Fuels: Hydrocarbon vapors released during cargo and bunker handling, regulated under MARPOL Annex VI Regulation 15 for some tankers.
Volatile Organic Compounds VOCs X28. Ship Recycling and End-of-Life: Emissions monitored during paint stripping and coating removal.
Volcanic Arc D2. Hydrography, tides, waves, bathymetry and marine geology: Curved chain of volcanoes above a subduction zone.
Volcanic Origin Coast Survey X126. Marine Oil Spill Response and OPRC Regimes: SCAT subcategory for Mauritius and Iceland shorelines.
Volcano Insurance Solutions X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets: Bermuda-based niche.
Volendam X64. Cruise Industry Operators, Brands and Ships: Holland America Line R-class ship delivered in 1999.
Volendam Shipyard Heritage F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Wooden-vessel building tradition.
Volga X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: The longest river in Europe, 3,530 km navigable from the upper headwaters to Astrakhan on the Caspian Sea.
Volga Maritime Forum X119. Maritime Conferences, Trade Shows and Awards: Annual Russian inland waterway conference held in Nizhny Novgorod.
Volga Patrol Vessel X80. Maritime Search and Rescue Coordination: Russian Coast Guard surface SAR asset of the Volga class.
Volga Shipping Cluster F3. Seafaring Life, Education, Professions and Institutions: Russian inland maritime community.
Volga-Baltic Waterway X33. Inland Navigation and Barge Operations: Russian inland route linking the Volga to the Baltic via Lake Onega and Lake Ladoga.
Volga-Caspian Canal X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: The seasonal navigation channel through the Volga delta giving Caspian access to Volga river-sea vessels.
Volga-Dnepr Airlines X104. Project Cargo Forwarders and Heavy Transport: Russian air freight operator with An-124 and Il-76 fleets used for project charters.
Volga-Don Canal X33. Inland Navigation and Barge Operations: 101 km canal opened 1952 connecting the Volga with the Don and Sea of Azov.
Volgo-Balt class X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: Soviet-built river-sea cargo vessels (project 2-95A) of about 3,000 t, named for the Volga-Baltic Waterway.
Volgo-Don class X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: A series of large Soviet river-sea cargo ships of about 5,000 t deadweight, sized to the Volga-Don Canal locks.
Volgograd Lock X124. Dredging Industry and Reclamation Contractors: Russian inland waterway dredging.
Volgoneft X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: Soviet-built river-sea oil tankers (project 550 and 1577), with the Volgoneft 250 series of about 4,800 t deadweight.
Volker Stevin X124. Dredging Industry and Reclamation Contractors: Dutch construction firm associated with reclamation historically.
Vollenhove X35. Yacht and Superyacht Industry: Dutch town and seat of Royal Huisman.
VOLOS Marine X63. Marine Auxiliary Machinery and Pumps: Manufacturer of marine sewage treatment plants compliant with MEPC.227(64).
Volta Redonda X92. Marine Steel Suppliers and Shipbuilding Plate: CSN integrated steelworks in Rio de Janeiro state, Brazil.
Voltage Dip X67. Marine Electrical Systems and Shore Power: Short reduction in bus voltage caused by motor starting or fault clearance.
Voltage Gradient X100. Marine Cathodic Protection and Anodes: The spatial variation of potential in the electrolyte around an anode or holiday.
Voltage gradient test X122. Submarine Cable Laying, Repair Vessels and Operators: Pre-launch verification of cable jacket and insulation system integrity under PFE-injected DC voltage.
Voltage Imbalance X67. Marine Electrical Systems and Shore Power: Inequality between the three phase voltages, limited by class rules to typically 2 to 3 percent.
Voltage regulator X19. Engine Room Watchkeeping and UMS Operations: AVR maintaining generator terminal voltage at set point.
Voltage Surge Protection X48. Maritime Cybersecurity: Electrical protection whose failure can cascade into cyber relevant equipment outages.
Voltage, reefer X26. Reefer Containers and Cold Chain Logistics: Common values 380 V (50 Hz), 440 V (60 Hz), 460 V (60 Hz).
VoltaInfrasea X42. Offshore Wind Installation and Cable Lay: Reference earlier vessel name; included for context.
Voltaire X42. Offshore Wind Installation and Cable Lay: Jan De Nul jack-up installation vessel delivered in 2022 with a 3,000 t main crane for next generation offshore wind turbines.
Voltri X124. Dredging Industry and Reclamation Contractors: Genoa container terminal dredging.
Volturno, The [1921] 2 AC 544 X143. Landmark Maritime Law Cases and Doctrines: House of Lords on currency conversion of damages in collision.
VolturnUS X123. Offshore Wind Installation Vessels and Operators: US floating wind concrete semi-submersible developed by University of Maine, deployed in 1:8 scale 2013, full-scale 11 MW planned.
Volume 1 (IMDG) X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: Contains Part 1 General, Part 2 Classification, Part 4 Packing and Tank Provisions, Part 5 Consignment Procedures, Part 6 Construction and Testing of Packagings, and Part 7 Operational Provisions.
Volume 2 (IMDG) X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: Contains Part 3 Dangerous Goods List, Limited and Excepted Quantities exceptions, with the index and appendices.
Volume at Reference X20. LNG Operations and Custody Transfer: Cargo volume corrected to minus 161.5 degrees C and 1.01325 bar per GIIGNL.
Volume coefficient (CV) B1. Naval Architecture: Volume divided by L^3.
Volume Concession Discount X28. Ship Recycling and End-of-Life: Owner's discount for offering multiple ships under a single demolition deal.
Volume correction factor X47. Marine Fuel Quality and ISO 8217: Multiplier applied to observed volume to convert to standard temperature, drawn from ASTM/IP tables 54B/54D for bunker fuels.
Volume Flow Rate X69. EGCS Scrubbers, SCR and Marine Air Emissions: Washwater flow rate sized to engine power, typically 45 m3/MWh for open-loop scrubbers as a reference.
Volume of Fluid X54. Naval Architecture Software and IACS Rules: Free surface tracking method used in STAR-CCM+, Fluent, and OpenFOAM.
Volume solids X45. Marine Paints, Coatings and Antifouling: Percentage of a wet coating that becomes dry film, used in spreading-rate calculation.
Volumetric coefficient CV X162. Naval Architecture, Stability, Resistance, and Structural Design: Non-dimensional ratio of displaced volume to length cubed, used in resistance regressions.
Volumetric Custody Transfer X20. LNG Operations and Custody Transfer: Method computing energy from volume, density (KMR or PR EoS), and GHV (ISO 6976/GPA 2172).
Volumetric efficiency X19. Engine Room Watchkeeping and UMS Operations: Ratio of actual to theoretical air intake on reciprocating engines and compressors.
Voluntary biofouling guidance X18. Ballast Water, Biofouling and Antifouling: Generic term for non-mandatory guidelines such as IMO MEPC.207(62) and MEPC.378(80).
Voluntary Carbon Market (VCM) X34. Decarbonization, Alternative Fuels and Carbon Pricing: Market for non-compliance carbon credits; relevant for shipowner net-zero claims.
Voluntary Cession X117. Marine Insurance Markets, Captives and Reinsurance: A facultative reinsurance offer the reinsurer may accept or decline at its discretion.
Voluntary Guidelines for Securing Sustainable Small-Scale Fisheries (SSF Guidelines) D4. Fisheries, aquaculture, blue economy and marine resources: FAO guidance adopted in 2014.
Voluntary HKC Compliance X50. Ship Recycling, Demolition and Hong Kong Convention: The yard or shipowner pre-entry into force adoption of HKC standards, common across major operators since 2015.
Voluntary IMO Member State Audit Scheme X66. Port State Control and Regional MOUs: Verified compliance of flag States with IMO instruments; relevant context for PSC.
Voluntary Industry Code X154. Maritime Welfare, Seafarer Charities, and MLC Rights: Various employer-led codes such as the Neptune Declaration that complement MLC.
Voluntary inspection X7. Flag State, Port State Control and Detention Vocabulary: PSC inspection conducted at the request of master or owner outside the targeting schedule, rare.
Voluntary Notation X142. Classification Societies and Class Notations: Class notation taken at owner's option.
Voluntary Pilotage X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Use of a pilot by a master not legally required to take one, often selected for insurance or local-knowledge reasons.
Voluntary Reporting X127. Maritime Security, Anti-Piracy and PMSCs: Submission to UKMTO, MSCHOA, MARLO, JMIC, MDAT-GoG or ReCAAP ISC of position, course and speed.
Voluntary Reporting Area (VRA) E1. Maritime security, geopolitics and risk: UKMTO Indian Ocean reporting zone.
Voluntary Reporting Area Gulf of Guinea X22. Piracy, Maritime Security and Armed Protection: Area established by MDAT-GoG covering West African waters.
Voluntary Reporting Area Indian Ocean X22. Piracy, Maritime Security and Armed Protection: Area established 1 January 2023 replacing the Indian Ocean HRA.
Voluntary reporting scheme X163. Marine Accident Investigation Agencies and Landmark Inquiries: Confidential industry reporting channel (such as CHIRP Maritime) used alongside formal investigation regimes.
Voluntary routeing measure (Bering Strait) X27. Polar Code, Ice Navigation and Polar Operations: IMO-adopted in 2018; first IMO routing in Arctic.
Voluntary Salvage X60. Marine Salvage and Wreck Removal: Salvage rendered without prior contractual engagement, an essential element of traditional salvage law.
Voluntary Self-Disclosure (VSD) X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: A submission to OFAC of an apparent violation, which may significantly reduce civil monetary penalties.
Voluntary Service Award Schemes F3. Seafaring Life, Education, Professions and Institutions: National long-service awards.
Voluntary Thickness Reduction X5. Marine Surveying and Inspection: Owner accepted thickness reduction within class allowable.
Volunteer Reserve X39. Pre-1900 Maritime History: British naval reserve formed under the Naval Reserve Act 1859.
Volunteer Search and Rescue X80. Maritime Search and Rescue Coordination: SAR organizations staffed by trained volunteers.
Volute X10. Marine Biology, Fisheries and Oceanography: Marine gastropod of the family Volutidae.
Volute Casing X63. Marine Auxiliary Machinery and Pumps: Spiral pump casing converting velocity to pressure at the impeller outlet.
Volute Casing Analysis X54. Naval Architecture Software and IACS Rules: Centrifugal pump casing FEA sometimes performed for marine machinery.
Volute pump B2. Marine Engineering: Single-stage centrifugal pump with volute casing.
Volvo Ocean Race F4. Recreational Boating, Yachting and Sport: Former name of The Ocean Race.
Volvo Penta X90. Marine Engine Specific Model Enumeration: Marine division of Volvo Group producing D-Series diesels and the Inboard Performance System pod drive.
Volvo Penta IPS X38. Propellers, Stern Gear and Shaft Lines: Forward-facing, twin contra-rotating tractor pod system for fast craft.
Volvo Penta Marine Engines F4. Recreational Boating, Yachting and Sport: Common recreational marine power.
Volzhsky X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: A Soviet-built river-sea cargo class (project 05074M) of about 5,000 t, in service since the 1980s.
VOMM Survey X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Vessel-mounted multibeam survey campaign for cable and pipeline routes in deep water.
Von Bertalanffy growth function (VBGF) X10. Marine Biology, Fisheries and Oceanography: Equation describing fish length-at-age, with parameters L-infinity, K, and t0.
Voortrekker Maritime Lines F1. Maritime History: South African historical coastal carriers.
Vopak X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Royal Vopak operates tank terminals at Rotterdam Botlek, Vlaardingen, Europoort, Fujairah Horizon, and Singapore Sebarok serving the bunker market.
Vopak Ammonia Terminal Rotterdam X140. Ammonia as Marine Fuel and Hydrogen Shipping: 80,000 m3 fully refrigerated NH3 storage at Botlek under expansion.
Vopak ARA X72. Bunkering Hubs and Bunker Suppliers: Royal Vopak terminals in ARA storing bunker grade product for delivery into the bunker barge fleet.
Vorpal Tide D2. Hydrography, tides, waves, bathymetry and marine geology: Not standard.
Vortex Induced Vibration (VIV) X14. Offshore Oil and Gas Marine Operations: Cyclic riser/pipeline motion from cross-flow.
Vortex lattice method B1. Naval Architecture: Panel method using horseshoe vortices for foil and propeller analysis.
Vortex Ring State X31. Helicopter Operations on Ships: Aerodynamic condition during low forward speed descent where rotor enters own downwash.
Vortex Skimmer X126. Marine Oil Spill Response and OPRC Regimes: Skimmer using induced rotation to draw oil into a central drain, e.g., Megator type.
Vortexa X74. AIS Data, Vessel Tracking and Maritime Intelligence: London-based commodity intelligence firm founded in 2016 specializing in oil and gas flow analytics from AIS.
Vortice Bunker Pump X72. Bunkering Hubs and Bunker Suppliers: Generic term for cargo pump on a bunker barge used for stem transfer.
Vorticity D1. Physical and chemical oceanography and marine meteorology: Curl of the velocity field, measuring local rotation.
VOS (Voluntary Observing Ship) D5. Coastal processes, sea-level, cryosphere and ocean observation science: Merchant ship voluntarily providing weather observations.
VOS Power X105. Offshore Wind Farm Installation and Vessels: Vroon Offshore Services walk-to-work and emergency response and rescue vessel serving offshore wind farms.
VOS Stone X105. Offshore Wind Farm Installation and Vessels: Vroon Offshore Services walk-to-work vessel operating in the offshore wind sector.
Voskhod X132. High-Speed Craft, Hydrofoils and Ferry Operators: Soviet-era 27 m surface-piercing hydrofoil, successor to the Raketa, built by Feodosia Shipyard.
Vostok Station X133. Polar Research Vessels and Polar Code Regimes: Russian inland Antarctic year-round station, 3488 m elevation, site of lowest natural surface temperature minus 89.2 deg C.
Voucher System X68. Maritime Satcom and Telecommunications: Crew Wi-Fi prepaid model in which seafarers purchase scratch cards or codes for internet access.
Vox Africana X175. Port Engineering, Dredging, Breakwaters, and Quays: Trailing suction hopper dredger operated by Van Oord.
Vox Alexia X124. Dredging Industry and Reclamation Contractors: Van Oord TSHD of 17,600 m3 hopper.
Vox Amalia X124. Dredging Industry and Reclamation Contractors: Van Oord TSHD of 18,000 m3.
Vox Apolonia X124. Dredging Industry and Reclamation Contractors: Van Oord LNG dual-fuel TSHD of 18,000 m3, delivered 2021.
Vox Ariane X124. Dredging Industry and Reclamation Contractors: Van Oord TSHD.
Vox Maxima X124. Dredging Industry and Reclamation Contractors: Van Oord TSHD of 31,200 m3 hopper.
Vox Vesuvius X124. Dredging Industry and Reclamation Contractors: Van Oord TSHD.
Voyage X3. Ship Handling, Seamanship and Deck Vocabulary: Passage between ports.
Voyage Account Reconciliation X86. Port Agency, Husbandry and Disbursement: Reconciliation of all costs and revenues for a voyage including agency items.
Voyage Allocation X83. ISO Container Manufacturing and Leasing: Allocation of container slots by an operator to specific shipments on a given sailing.
Voyage broker X71. Shipbrokers and Brokerage Firms: Broker arranging single-voyage charters.
Voyage Bunker Reconciliation X115. Marine Bunker and Cargo Surveying: Comparison of bunker ROB, consumption, and supply for a complete voyage to detect leakage or measurement error.
Voyage Charter A5. Maritime Law, private and commercial: Charter for a specific voyage between named ports.
Voyage charter arbitration X152. Maritime Arbitration and Dispute Resolution: Disputes over freight, demurrage, despatch, deviation, and cargo claims under voyage charterparties such as Gencon 1994 and ASBATANKVOY.
Voyage Charter Optimization E3. Technology, digitalization and smart shipping: Algorithmic cargo-vessel matching.
Voyage Charter Survey X5. Marine Surveying and Inspection: Cargo or condition survey under a voyage charter.
Voyage Charterer's Liability X53. Marine Insurance, P&I and Hull Clauses: Cover for voyage charterers' liabilities under charterparties and to third parties.
Voyage Cost Optimization X78. Voyage Optimization and Vessel Performance Software: The process of selecting voyage parameters such as speed, route, and bunker stems to minimize total voyage cost under contractual and operational constraints.
Voyage data recorder C2. Ship operations, crewing and technical management: VDR or S-VDR under SOLAS.
Voyage Data Recorder (VDR) F5. The Reference Layer: Glossary, Units, Signals and Information Sources: SOLAS V/20 black-box equivalent for ships.
Voyage Data Recorder (VDR) Annual Performance Test X5. Marine Surveying and Inspection: Independent test of VDR functionality.
Voyage Data Recorder Recovery X60. Marine Salvage and Wreck Removal: Recovery of the VDR from a wreck for casualty investigation.
Voyage data system C4. Ports, terminals and coastal/marine civil engineering: Coastal traffic management data system.
Voyage estimate C1. Commercial shipping, chartering, economics and finance: Pro forma calculation of voyage economics.
Voyage Estimate Input X86. Port Agency, Husbandry and Disbursement: Input of port cost data to voyage estimates for chartering teams.
Voyage Estimation X44. Shipping Indices, FFAs and Freight Markets: Process of projecting voyage costs and revenues to derive TCE, used by chartering and FFA desks to evaluate trades.
Voyage Estimator X101. Vessel Brokerage Software and Chartering Platforms: Veson IMOS module used by chartering desks to compute time charter equivalent earnings for prospective voyages.
Voyage Frustration X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: Discharge of the carriage contract due to events rendering performance impossible, with consequences for freight and GA.
Voyage instructions C1. Commercial shipping, chartering, economics and finance: Charterer's orders for the voyage.
Voyage Manager F3. Seafaring Life, Education, Professions and Institutions: Commercial role coordinating voyage logistics.
Voyage Number to Recycling X118. Ship Recycling Yards, Beaches and Regulation: Custom voyage identifier used by cash buyers and managers for handover documentation.
Voyage of Discovery F1. Maritime History: Generic term for organized scientific or exploratory expedition.
Voyage of HMS Beagle, Darwin F2. Maritime Culture, Heritage, Archaeology, Art and Museums: 1839 published narrative.
Voyage Optimization X109. Maritime Autonomous Surface Ships and MASS Code: A planning function that adjusts route, speed, and trim for fuel and time efficiency on MASS.
Voyage Optimization Software D6. Decarbonization, emissions and alternative fuels: Routing and trim software reducing fuel use.
Voyage P&L X71. Shipbrokers and Brokerage Firms: Profit and loss summary for a completed voyage, frequently prepared with broker input.
Voyage Plan A2. Maritime safety legislation: SOLAS and its codes: Required under SOLAS V/34.
Voyage Plan, Final Voyage X50. Ship Recycling, Demolition and Hong Kong Convention: The navigational planning for the final voyage to the recycling yard, often subject to additional flag and class conditions.
Voyage Planning X78. Voyage Optimization and Vessel Performance Software: The structured process of planning a passage from berth to berth covering appraisal, planning, execution, and monitoring stages.
Voyage planning (Polar Code) X27. Polar Code, Ice Navigation and Polar Operations: Polar Code Chapter 11 sets specific voyage planning items including ice information sources and SAR.
Voyage Policy X4. Marine Insurance, P&I and Claims: policy from one place to another, as defined in section 25 of the Marine Insurance Act 1906.
Voyage Provisioning Plan X120. Marine Catering, Provisions and Ship Chandlers: Master and cook agreed plan for fresh, frozen, and dry stores across a passage.
Voyage Restriction X8. IACS, Class Rules and Class Notations: limitation imposed by class on geographic service, recorded on the certificate.
Voyage Survey X43. Marine Surveying and Warranty Surveying: An inspection covering a single voyage from loading through discharge, typically commissioned by a charterer or trader.
Voyage Tracking and Tracing X33. Inland Navigation and Barge Operations: VTT, RIS service for monitoring vessel positions and voyages.
Voyager of the Seas X64. Cruise Industry Operators, Brands and Ships: First Royal Caribbean Voyager-class ship delivered in 1999.
Voyager Worldwide 2023 X48. Maritime Cybersecurity: January 2023 cyber incident at maritime voyage planning software provider Voyager Worldwide that disrupted services used by shipping customers.
Voyageur Spirit FPSO X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Teekay Offshore FPSO formerly operating on the Huntington field in the UK North Sea.
Voylayrules 1993 X114. Maritime Arbitration and Shipping Law Firms: BIMCO and FONASBA standard definitions used in laytime arbitration.