Glossary
Maritime glossary, terms beginning with T (page 6)
All maritime glossary terms that begin with the letter T, drawn from every subject section. 2313 entries.
Showing 250 of 2313 terms (page 6 of 10).
- Tomakomai X124. Dredging Industry and Reclamation Contractors
- Japanese port dredged by Penta-Ocean and Toa.
- Tomato Paste X120. Marine Catering, Provisions and Ship Chandlers
- IMPA 550111 double concentrate, 850 g tin, ambient store.
- Tombigbee River X103. US Inland Waterway Towing and Barge
- An Alabama river forming part of the Black Warrior-Tombigbee Waterway and the southern leg of the Tenn-Tom.
- Tomlinson, Hon. Sir Stephen X99. Marine Salvage Awards and SCOPIC
- Retired English Court of Appeal judge serving as a Lloyd's Salvage Arbitrator.
- TOMSA (Trial Operations Master Service Agreement) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA
- A commercial agreement that may incorporate vetting acceptance as a precedent.
- Tonengeneral Sekiyu X61. Marine Lubricants and Cylinder Oils
- Predecessor company to current Eneos arrangements that distributed Mobilgard marine lubricants in Japan.
- Tonga Maritime Registry X98. Ship Registries and Flag States
- National registry of the Kingdom of Tonga.
- Tonga Trench X10. Marine Biology, Fisheries and Oceanography
- Deep ocean trench in the southwest Pacific.
- Tongariki Cable Landing X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines
- Pacific cable landing in Vanuatu serving regional connectivity projects.
- Tongue (water mass) X10. Marine Biology, Fisheries and Oceanography
- Elongated lobe of a water mass with distinct properties extending into surrounding water.
- Tonnage X64. Cruise Industry Operators, Brands and Ships
- General term for the size or carrying capacity of a vessel.
- Tonnage (GT, Fishing Vessel) X87. Fishing Vessels and Fisheries Management
- Gross tonnage measured under the 1969 Tonnage Convention, applied to fishing vessels of 24 meters and above.
- Tonnage 1969 X158. IMO Conventions, Protocols, Codes, and Resolutions
- International Convention on Tonnage Measurement of Ships, adopted 23 June 1969 and entered into force 18 July 1982.
- Tonnage Act 1773 X39. Pre-1900 Maritime History
- British statute regulating the measurement of merchant ships for duties.
- Tonnage Certificate X5. Marine Surveying and Inspection
- Statutory certificate of gross and net tonnage.
- Tonnage Certificate Deficiency X146. Port State Control Regimes, MoUs, and Inspection Systems
- A 01xxx deficiency relating to the International Tonnage Certificate (1969).
- Tonnage Convention X54. Naval Architecture Software and IACS Rules
- IMO 1969 convention defining gross and net tonnage used in many class fees.
- Tonnage Convention 1969 A4. Other IMO and ILO conventions and codes
- International Convention on Tonnage Measurement of Ships, defining GT and NT.
- Tonnage Cross-Reference A2. Maritime safety legislation: SOLAS and its codes
- SOLAS applies to ships of various sizes; tonnage measured under Tonnage 1969.
- Tonnage demolished annually X147. Ship Recycling, Hong Kong Convention, and Recycling Yards
- Industry metric, typically quoted in LDT or DWT, used to size the global recycling market (roughly 600 to 900 ships per year).
- Tonnage Limitation X51. Maritime Arbitration, Law and BIMCO Clauses
- Limitation of liability calculated by reference to the tonnage of the vessel under LLMC 1976 or the 1996 Protocol.
- Tonnage List X44. Shipping Indices, FFAs and Freight Markets
- Shipbroker compilation of vessels open for fixture in a given region, indirectly informing FFA sentiment.
- Tonnage Measurement Survey X43. Marine Surveying and Warranty Surveying
- A statutory inspection under the International Convention on Tonnage Measurement of Ships to determine gross and net tonnage.
- Tonnage opening C2. Ship operations, crewing and technical management
- Manhole on tonnage deck.
- Tonnage Pricing per LDT X50. Ship Recycling, Demolition and Hong Kong Convention
- The fundamental commercial unit of demolition pricing, expressed in US dollars per LDT.
- Tonnage report X71. Shipbrokers and Brokerage Firms
- Weekly broker report listing sales and purchases by sector.
- Tonnage tax C1. Commercial shipping, chartering, economics and finance
- Alternative tax regime based on ship tonnage rather than profits.
- Tonnage Wars F1. Maritime History
- Twentieth-century Allied versus Axis merchant attrition campaigns.
- Tonne F5. The Reference Layer: Glossary, Units, Signals and Information Sources
- Metric ton of 1000 kilograms.
- Tonne CO2 equivalent B2. Marine Engineering
- Common unit for FuelEU and EU ETS reporting.
- Tonne per centimeter immersion (TPC) B1. Naval Architecture
- Mass required to sink the ship one centimeter.
- Tonnes Bollard Pull X79. Tugs and Towage Industry
- Standard unit for stating a tug's pulling capability, abbreviated tbp.
- Tonnes per centimeter immersion TPC X162. Naval Architecture, Stability, Resistance, and Structural Design
- Mass that must be added to immerse the hull by one centimeter, equal to (Aw times rho) divided by 100.
- Tonometry (no entry) X16. Nautical Science, Navigation and COLREGs
- Not navigation.
- Toochi X124. Dredging Industry and Reclamation Contractors
- Inland Indian river dredging by DCI.
- Tooke Gauge X88. Marine Surface Preparation and Coatings Application
- Destructive cross-section instrument measuring dry film thickness by microscopic examination of a cut through the coating per ASTM D4138.
- Tool port C4. Ports, terminals and coastal/marine civil engineering
- Governance model where port authority owns and operates assets, private labour.
- Tool, fairing X58. Shipbuilding Yards and Construction
- Hydraulic clamp or jack used during fit-up.
- Toolox X92. Marine Steel Suppliers and Shipbuilding Plate
- SSAB branded family of prehardened tool and engineering steels supplied as plate.
- Toothed whale X10. Marine Biology, Fisheries and Oceanography
- Member of suborder Odontoceti.
- Top Bracing X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring
- Hydraulic or mechanical lateral support between engine top platform and hull structure to suppress H-mode vibration.
- Top Bridge Fitting X9. Cargo Securing, Lashing and Stability Vocabulary
- Connector across tops of two adjacent containers.
- Top Discharge (Separator) X63. Marine Auxiliary Machinery and Pumps
- Configuration in which clean oil is removed from the top of the separator bowl.
- Top dressing X124. Dredging Industry and Reclamation Contractors
- Final placement of clean material over reclamation surface.
- Top Fishing Nations X87. Fishing Vessels and Fisheries Management
- Per FAO SOFIA, principal capture producers include China, Indonesia, India, Peru, Russia, and the United States.
- Top hamper X3. Ship Handling, Seamanship and Deck Vocabulary
- Weight aloft.
- Top handler X15. Ports, Terminals and Stevedoring
- empty container forklift with top spreader.
- Top hat X42. Offshore Wind Installation and Cable Lay
- Reference flange detail nickname.
- Top Kill X126. Marine Oil Spill Response and OPRC Regimes
- Source control method of pumping kill mud into a flowing well, attempted unsuccessfully at Macondo.
- Top Lift X75. IMDG Code, Classes, Packing and Segregation
- Method of lifting containers by top corner castings; tank containers must withstand top lift loads per ISO standards.
- Top Lift Beam X104. Project Cargo Forwarders and Heavy Transport
- Lift beam connected at the top of a project unit to suspend it from the crane hook.
- Top Lift Frame X83. ISO Container Manufacturing and Leasing
- Lifting frame engaging only the top corner castings, used by reach stackers and gantry cranes.
- Top Lifter X46. Container Terminal Operations
- A counterbalanced lift truck fitted with a top-lift spreader used for laden containers in lower stacks.
- Top Pick X169. Container Terminal Cranes, Yard Equipment, and Lashing
- Top-lift forklift used for stacking empty containers, typically up to seven or eight high.
- Top ring zone X61. Marine Lubricants and Cylinder Oils
- Region of the cylinder liner near top dead center where peak temperatures and pressures stress the lubricant film.
- Top Side Rail X83. ISO Container Manufacturing and Leasing
- Longitudinal frame member running along the top of the container side wall.
- Top Tensioned Riser X14. Offshore Oil and Gas Marine Operations
- Vertical riser kept in tension by surface tensioners.
- Top Tier X9. Cargo Securing, Lashing and Stability Vocabulary
- Highest tier in a container stack; usually requires lashing.
- Top Up Equity X49. Ship Finance, Leasing and Maritime Capital Markets
- Additional sponsor equity injected to maintain loan to value compliance.
- Top-Down Control D4. Fisheries, aquaculture, blue economy and marine resources
- Predator influence on lower trophic levels.
- Top-Lift Truck X94. Port Machinery and Quay Equipment Makers
- Counterbalanced forklift with overhead twistlock spreader for stacking containers, distinct from a reach stacker.
- Topaz X125. Superyacht Industry, Builders and Brokers
- 147 m Lurssen delivered 2012 to Mansour bin Zayed.
- TOPAZ Capping Stack X126. Marine Oil Spill Response and OPRC Regimes
- OSRL's 18-3/4 inch 15,000 psi subsea capping stack at Stavanger.
- Topaz Dinghy F4. Recreational Boating, Yachting and Sport
- Topper International rotomolded class.
- Topcoat X45. Marine Paints, Coatings and Antifouling
- Final coat of an atmospheric exposure system, providing color, gloss, and weather resistance.
- TOPEX/Poseidon D5. Coastal processes, sea-level, cryosphere and ocean observation science
- Pioneering NASA-CNES altimetry mission.
- Topgallant X3. Ship Handling, Seamanship and Deck Vocabulary
- Mast or sail above the topmast.
- TOPIA X108. Marine Insurance and P&I Clubs
- The Tanker Oil Pollution Indemnification Agreement, a voluntary IGP&I arrangement supplementing the IOPC Supplementary Fund for larger tanker spills.
- Topical anesthetic eye drops X36. Shipboard Medical, Telemedicine and Seafarer Health
- Tetracaine or proxymetacaine for foreign-body removal.
- Toplis Marine X78. Voyage Optimization and Vessel Performance Software
- A marine consultancy and services group involved in performance, technical, and claims related work.
- Topmark X16. Nautical Science, Navigation and COLREGs
- Shape mounted atop a buoy or beacon for identification.
- Topmast X3. Ship Handling, Seamanship and Deck Vocabulary
- Second section of a mast above the lower mast.
- Topographic Slope D2. Hydrography, tides, waves, bathymetry and marine geology
- Gradient of the seabed.
- Topographic survey X175. Port Engineering, Dredging, Breakwaters, and Quays
- Land survey of elevations and features behind a quay or above the high water mark.
- Topper Dinghy F4. Recreational Boating, Yachting and Sport
- 11-foot plastic single-handed dinghy.
- Topping lift X3. Ship Handling, Seamanship and Deck Vocabulary
- Rope supporting the outboard end of a boom or derrick.
- Topping off C1. Commercial shipping, chartering, economics and finance
- Final cargo intake to reach desired loadline.
- Topping out X58. Shipbuilding Yards and Construction
- Erection of the highest block of a structure, sometimes ceremoniously marked.
- TOPS (RBS) X46. Container Terminal Operations
- A terminal operating system product of Realtime Business Solutions used at container terminals worldwide.
- Topsail Schooner X39. Pre-1900 Maritime History
- A schooner carrying square topsails on the foremast, sometimes called a hermaphrodite brig in older American usage.
- Topside X3. Ship Handling, Seamanship and Deck Vocabulary
- Side of the hull above the waterline.
- Topside Cable Pull-In X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines
- Operation lifting a submarine cable end from the seabed up through an OSP J-tube into the topside switchgear.
- Topside icing X27. Polar Code, Ice Navigation and Polar Operations
- Accretion of ice on superstructure, masts, and rigging from spray and precipitation.
- Topside Lift X167. Major Salvage Companies, Wreck Removals, and Equipment
- Crane lift of structures or sections from a wreck or platform onto a transport barge.
- Topside Manifold X20. LNG Operations and Custody Transfer
- Ship deck assembly hosting cargo presentation flanges, drip trays, and emergency shutdown valves.
- Topside Structural Analysis X54. Naval Architecture Software and IACS Rules
- FEA of offshore topsides performed in Sesam GeniE, MAESTRO, or SACS.
- Topside Tank Inspection X5. Marine Surveying and Inspection
- Close-up survey of topside ballast tanks in bulk carriers.
- Topsides X84. Yacht Racing, Regattas and Sailing Governance
- The hull area between the waterline and the deck edge.
- Topsides Installation X81. Project Cargo, Heavy-Lift and Module Carriers
- Offshore operation in which an integrated platform topside is set onto its substructure, increasingly by single lift.
- TopSlip Joint X123. Offshore Wind Installation Vessels and Operators
- Connection method for monopile to transition piece without grout or bolts, deployed at Borssele V demonstration site.
- Topsoe SynCOR Ammonia X140. Ammonia as Marine Fuel and Hydrogen Shipping
- Autothermal reformer technology enabling smaller blue NH3 footprint.
- Topsoil placement X124. Dredging Industry and Reclamation Contractors
- Application of fertile cap over reclaimed land for revegetation.
- Tor Station X133. Polar Research Vessels and Polar Code Regimes
- Norwegian Polar Institute summer-only station in Queen Maud Land.
- Tornado X84. Yacht Racing, Regattas and Sailing Governance
- A 20-foot catamaran designed by Rodney March in 1967, an Olympic class from 1976 to 2008.
- Tornado II X165. Marine Coatings, Antifouling, and Hull Husbandry
- Jotun chlorinated rubber legacy antifouling brand largely retired in favor of tin-free SPCs.
- Tornado-class X77. Naval Mine Warfare and Mine Countermeasures
- A historical Royal Navy minesweeping motor launch class.
- Tornado, International F4. Recreational Boating, Yachting and Sport
- Olympic catamaran 1976 to 2008.
- Tornio X92. Marine Steel Suppliers and Shipbuilding Plate
- Outokumpu integrated stainless steelworks in northern Finland.
- Torpedo Anchor X14. Offshore Oil and Gas Marine Operations
- Free-fall finned penetrator anchor used by Petrobras.
- Torpedo Pile X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels
- Free-fall installed steel pile shaped like a torpedo used as deepwater mooring anchor, pioneered in Brazil.
- Torque (propeller) X38. Propellers, Stern Gear and Shaft Lines
- Shaft torque absorbed by the propeller, equal to KQ rho n^2 D^5 in open water.
- Torque meter X38. Propellers, Stern Gear and Shaft Lines
- Strain-gauge or magneto-elastic device on the intermediate shaft measuring shaft torque continuously.
- Torque tool X65. ROVs, AUVs, USVs and Marine Robotics
- API 17D class subsea hydraulic tool deployed by an ROV manipulator to operate subsea valve stems and overrides.
- Torque wrench X59. Offshore Wind O&M, CTVs and SOVs
- Calibrated tool used to verify bolt preload on foundation, tower, and drivetrain joints.
- Torque-Speed Diagram X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring
- Engine load diagram defining permissible operating area bounded by torque-rich and speed-rich limits.
- Torremolinos Convention (1977) X87. Fishing Vessels and Fisheries Management
- Original IMO convention on the safety of fishing vessels, never entered into force.
- Torremolinos Protocol (1993) X87. Fishing Vessels and Fisheries Management
- Protocol updating the 1977 Convention, superseded by the 2012 Cape Town Agreement.
- Torres Strait pilot X32. Marine Pilotage and Pilot Operations
- AMSA-licensed pilot for compulsory pilotage of Torres Strait since 6 October 2006.
- Torres Strait Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations
- Reef pilots licensed under Australian Marine Order 54 for compulsory pilotage through the Prince of Wales and Great North East Channels.
- Torres Strait PSSA X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary
- The Particularly Sensitive Sea Area in the strait between Australia and Papua New Guinea, designated by IMO in 2005 with associated pilotage measures.
- Torrey Canyon X126. Marine Oil Spill Response and OPRC Regimes
- 1967 grounding off Cornwall releasing 119,000 tonnes of Kuwaiti crude, catalyst for IMO MARPOL development.
- Torrey Canyon (1967) X12. Maritime Casualties and Investigation
- Liberian tanker grounded on Seven Stones reef on 18 March 1967 spilling about 119,000 tonnes; spurred the 1969 Intervention Convention and CLC.
- Torrey Canyon casualty (1967) X163. Marine Accident Investigation Agencies and Landmark Inquiries
- Liberian-flag VLCC that grounded on Pollard's Rock, Seven Stones, on 18 March 1967 spilling about 119,000 tonnes of crude oil, investigated by Liberia as flag State and the subject of a UK…
- Torsion meter X19. Engine Room Watchkeeping and UMS Operations
- Strain gauge or magnetic device measuring shaft torque.
- Torsional fatigue X42. Offshore Wind Installation and Cable Lay
- Failure mode considered in dynamic cable design under repeated twisting.
- Torsional vibration X19. Engine Room Watchkeeping and UMS Operations
- Cyclic twist in shaft system, design limited by class.
- Torsional vibration calculation (TVC) B2. Marine Engineering
- Class-approved shafting analysis.
- Tortola X35. Yacht and Superyacht Industry
- Largest of the British Virgin Islands and home of the BVI Charter Yacht Society.
- Tortola, BVI X156. Superyacht Industry, Builders, and Yacht Charter Market
- Main island of the British Virgin Islands and the central yacht charter hub of the Eastern Caribbean with bases at Road Town and Nanny Cay.
- Tortue FLNG X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels
- Greater Tortue Ahmeyim FLNG project served by Gimi FLNG offshore Mauritania and Senegal.
- TOS C3. Logistics, freight forwarding and multimodal trade
- Terminal operating system.
- Toss oars X3. Ship Handling, Seamanship and Deck Vocabulary
- Raise oars vertically in salute.
- Total X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation
- TotalEnergies, French oil company and Sea Cargo Charter signatory.
- Total (TotalEnergies Marine Fuels) X149. Marine Fuels, Bunkering, and Alternative Fuels
- TotalEnergies' marine fuels business and operator of major LNG bunker vessels including Gas Agility and Gas Vitality.
- Total acid number X61. Marine Lubricants and Cylinder Oils
- Measure of acidic constituents in a lubricant determined by potentiometric titration per ASTM D664.
- Total acid number (TAN) X47. Marine Fuel Quality and ISO 8217
- Milligrams of potassium hydroxide required to neutralize the acids in one gram of fuel, measured by ASTM D664 or IP 575.
- Total Activity X75. IMDG Code, Classes, Packing and Segregation
- Sum of radioactivity of all radionuclides in a package, basis for Class 7 categorization.
- Total Alkalinity (TA) D1. Physical and chemical oceanography and marine meteorology
- Excess of proton acceptors over proton donors in seawater.
- Total Allowable Catch (TAC) X10. Marine Biology, Fisheries and Oceanography
- Maximum quantity of a stock that may be caught in a defined period.
- Total Anac Marine X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring
- TotalEnergies marine lube oil analysis programme offering global laboratory network and online trending.
- Total Calculated Volume (TCV) X5. Marine Surveying and Inspection
- GSV plus free water in petroleum quantity calculations.
- Total Carbon Footprint D6. Decarbonization, emissions and alternative fuels
- Full carbon emissions associated with a voyage or company.
- Total catch (centrifuge) B2. Marine Engineering
- Sludge mass per processed feed in separator.
- Total Catch Quota (RFMO) X87. Fishing Vessels and Fisheries Management
- Aggregate limit set by an RFMO for a stock under its mandate.
- Total Constructive Loss X13. Marine Salvage and Wreck Removal
- Synonym for constructive total loss in salvage and underwriting.
- Total correction (altitude) X16. Nautical Science, Navigation and COLREGs
- Combined altitude corrections for a celestial body.
- Total Crew Cost (TCC) X154. Maritime Welfare, Seafarer Charities, and MLC Rights
- Wage framework expressing all seafarer-related costs as a total per crew member.
- Total Discharge X63. Marine Auxiliary Machinery and Pumps
- Full empty-bowl cleaning cycle of a centrifugal separator.
- Total Energies X134. LNG and LPG Carrier Operators and Containment Systems
- French oil major and LNG portfolio player, charterer of fleet including Jules Verne and other modern LNGCs.
- Total Energies Vetting X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA
- The French integrated major's marine assurance function in La Defense screening crude, product, LNG, and chemicals.
- Total existent sediment X47. Marine Fuel Quality and ISO 8217
- Sediment measured by ISO 10307-1 without aging.
- Total Hazardous Material Survey X50. Ship Recycling, Demolition and Hong Kong Convention
- The comprehensive inventory of all regulated substances aboard, distinct from the IHM Part I, II, and III breakdown.
- Total head pump X56. LNG/LPG Carriers and IGC Code
- Cargo pump rated by total developed head used during discharge to the terminal.
- Total loss C2. Ship operations, crewing and technical management
- Actual or constructive total loss for insurance purposes.
- Total Loss Container X83. ISO Container Manufacturing and Leasing
- Container deemed beyond economic repair and removed from the active fleet.
- Total loss criterion X163. Marine Accident Investigation Agencies and Landmark Inquiries
- Casualty Investigation Code criterion for the very serious marine casualty category based on the total loss of the ship.
- Total Loss Only (TLO) X4. Marine Insurance, P&I and Claims
- cover responding only to actual or constructive total loss.
- Total Loss Survey X43. Marine Surveying and Warranty Surveying
- An attendance to confirm and document a constructive or actual total loss following a major casualty for insurance purposes.
- Total Lubmarine X61. Marine Lubricants and Cylinder Oils
- Marine lubricants division of TotalEnergies that markets the Talusia, Aurelia, and Disola product ranges.
- Total Maximum Daily Load (TMDL) D3. Marine environmental science, pollution and conservation
- US regulatory limit on pollutant load to a water body.
- Total Mortality (Z) D4. Fisheries, aquaculture, blue economy and marine resources
- Sum of natural and fishing mortality.
- Total Observed Volume (TOV) X5. Marine Surveying and Inspection
- Total volume in tank at observed temperature.
- Total potential sediment (TSP) X47. Marine Fuel Quality and ISO 8217
- Combination of existent and accelerated sediment, used historically; superseded operationally by TSA.
- Total productive maintenance X59. Offshore Wind O&M, CTVs and SOVs
- Reliability philosophy emphasizing involvement of operators in maintenance and continuous improvement.
- Total Propagated Uncertainty X73. Marine Hydrography, Charting and ENC
- TPU, the combined horizontal and vertical uncertainty assigned to each sounding under S-44.
- Total quality plan X58. Shipbuilding Yards and Construction
- Yard's overall quality assurance program covering production and inspection.
- Total Recovery Mass X28. Ship Recycling and End-of-Life
- Mass of materials extracted and weighed during dismantling.
- Total Residual Oxidant (TRO) X18. Ballast Water, Biofouling and Antifouling
- Concentration of oxidizing species in treated water; controlled to meet discharge limits.
- Total Resistance X54. Naval Architecture Software and IACS Rules
- Sum of frictional, wave-making, and appendage resistance computed for ship powering.
- Total resistance RT X162. Naval Architecture, Stability, Resistance, and Structural Design
- Sum of frictional, viscous-pressure, wave-making, air, and appendage components acting opposite to motion.
- Total Return Swap X49. Ship Finance, Leasing and Maritime Capital Markets
- Derivative referencing a bond or loan, used by some credit investors.
- Total Sea Level (TSL) D5. Coastal processes, sea-level, cryosphere and ocean observation science
- Sum of tide, surge, and mean sea level.
- Total sediment accelerated (TSA) X47. Marine Fuel Quality and ISO 8217
- Sediment measured after thermal aging per ISO 10307-2 Procedure A, capped at 0.10 percent mass in ISO 8217 RM grades.
- Total Sediment Aged X115. Marine Bunker and Cargo Surveying
- Sediment measurement after thermal aging of residual fuel per ISO 10307-2, indicating storage stability.
- Total Sediment Load D2. Hydrography, tides, waves, bathymetry and marine geology
- Sum of bed load and suspended load.
- Total Sediment Potential X115. Marine Bunker and Cargo Surveying
- Sediment measurement on accelerated aging samples, used as a stability indicator in residual fuel testing.
- Total sediment, aged (TSA) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations
- Sediment after thermal aging per ISO 10307-2.
- Total sediment, potential (TSP) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations
- Sediment after accelerated aging per ISO 10307-2 Procedure A.
- Total turn time X15. Ports, Terminals and Stevedoring
- gate-in to gate-out duration for a truck.
- TotalEnergies X42. Offshore Wind Installation and Cable Lay
- French energy major with offshore wind interests including Seagreen with SSE, Eolmed floating, Erebus floating, and US Atlantic leases.
- TotalEnergies Marine Fuels X72. Bunkering Hubs and Bunker Suppliers
- Global marine fuels business of TotalEnergies with desks in Singapore, Rotterdam, Fujairah, Houston, and Marseille.
- TotalEnergies Singapore Bunker X72. Bunkering Hubs and Bunker Suppliers
- Singapore office of TotalEnergies Marine Fuels with MPA license.
- TotalEnergies Vetting X40. Tanker Vetting, SIRE and VIQ
- The vessel screening function of TotalEnergies SE, formerly Total S.A., a founding OCIMF member.
- TOTSA Trading Vetting X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA
- TotalEnergies Trading SA's specific vetting interface for its trading desk fixtures.
- Touax Group X83. ISO Container Manufacturing and Leasing
- French container, modular building, and rail freight lessor headquartered near Paris.
- Touch-up X45. Marine Paints, Coatings and Antifouling
- Local repair coating applied to damage or holidays before service.
- Touch-up paint X165. Marine Coatings, Antifouling, and Hull Husbandry
- Coating applied to localized damage in service, normally compatible with the underlying system.
- Touchdown monitoring X122. Submarine Cable Laying, Repair Vessels and Operators
- ROV-assisted observation of cable contact with seabed during deepwater lay to verify slack control.
- Touchdown Monitoring System (TDMS) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines
- ROV-based system that continuously monitors pipeline touchdown during S-lay installation.
- Touchless Faucet X41. Cruise Ship Public Health and VSP/USPH
- Hands-free fixture at handwash sinks reducing recontamination after handwashing.
- Toulon X39. Pre-1900 Maritime History
- French Mediterranean naval port and arsenal developed under Vauban from the 1670s.
- Tourism Carrying Capacity D3. Marine environmental science, pollution and conservation
- Maximum tourist load a coastal ecosystem can sustain.
- Tournament Fishing D4. Fisheries, aquaculture, blue economy and marine resources
- Regulated recreational fishing competitions.
- Tourniquet (CAT) X36. Shipboard Medical, Telemedicine and Seafarer Health
- Combat Application Tourniquet for severe extremity hemorrhage.
- TOVAL Skimmer X126. Marine Oil Spill Response and OPRC Regimes
- Generic abbreviation for various lipophilic vacuum skimmer.
- Tow X3. Ship Handling, Seamanship and Deck Vocabulary
- Pull through the water.
- Tow Approval Survey X43. Marine Surveying and Warranty Surveying
- A marine warranty attendance issuing the certificate of approval to tow following inspection and document review.
- Tow Bar Heavy Haul X104. Project Cargo Forwarders and Heavy Transport
- Rigid drawbar between tractor and trailer used in heavy combinations.
- Tow Bridle X30. Tug Operations and Harbour Towage
- Two-leg towing connection to the tow.
- Tow Hook X79. Tugs and Towage Industry
- Quick-release hook used on conventional tugs in place of a winch for the working line.
- Tow Knee X33. Inland Navigation and Barge Operations
- Padded steel projection on the bow of a US push boat for engaging barges.
- Tow Light X103. US Inland Waterway Towing and Barge
- A navigation light displayed by a tow to indicate its dimensions and arrangement.
- Tow Line X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral
- Heavy rope or wire used to tow a vessel, distinct from mooring lines in design and certification.
- Tow Master X14. Offshore Oil and Gas Marine Operations
- Person in charge during rig moves and ocean tows.
- Tow path X175. Port Engineering, Dredging, Breakwaters, and Quays
- Marine corridor along which a tug and tow safely navigate to a port or berth.
- Tow Size X103. US Inland Waterway Towing and Barge
- The number and arrangement of barges in a tow, often expressed as rows by columns.
- Tow Wire X103. US Inland Waterway Towing and Barge
- A wire used to make up or extend a tow.
- Tow Wire Tension Monitoring X60. Marine Salvage and Wreck Removal
- Real time measurement of tow line tension to detect surge or imminent failure.
- Towage C4. Ports, terminals and coastal/marine civil engineering
- Provision of tugs for harbour and ocean tow.
- Towage and Pilotage X159. Marine Pilotage, Pilot Districts, and Pilots' Associations
- Combined service category in some ports where the towage operator employs pilots and provides an integrated berthing service.
- Towage Contract A5. Maritime Law, private and commercial
- BIMCO TOWHIRE/TOWCON or industry-standard offshore towage contracts.
- Towage Contract Reference X86. Port Agency, Husbandry and Disbursement
- Reference to towage contracts under which tugs are provided.
- Towage Distinguished from Salvage X99. Marine Salvage Awards and SCOPIC
- Distinction between ordinary towage services and salvage services rendered to a vessel in danger.
- Towage Liability X4. Marine Insurance, P&I and Claims
- P&I cover for liability arising under customary or contractual towage.
- Towage Plan X79. Tugs and Towage Industry
- Documented arrangement of tugs, lines, and procedures for a specific ship movement.
- Towage Salvage X99. Marine Salvage Awards and SCOPIC
- Salvage services that take the form of emergency towage of a disabled vessel.
- Towage Survey X43. Marine Surveying and Warranty Surveying
- A general term for warranty attendance covering the planning and execution of marine towage operations.
- Towage, block X58. Shipbuilding Yards and Construction
- Movement of large blocks between yards or hardstands using barges or pontoons.
- Towboat X30. Tug Operations and Harbour Towage
- US term for an inland vessel pushing barges.
- TOWCON 2008 X13. Marine Salvage and Wreck Removal
- BIMCO international ocean towage agreement, lump sum.
- TOWCON 2021 X13. Marine Salvage and Wreck Removal
- Updated BIMCO international ocean towage agreement, lump sum.
- Towed array minehunting sonar X77. Naval Mine Warfare and Mine Countermeasures
- A class of sonars deployed astern of a tow body to keep the sensor below thermal layers and avoid hull noise.
- Towed-Array Sonar E2. Naval, defence and maritime law enforcement
- Passive sonar streamed astern of ship/submarine.
- Tower X105. Offshore Wind Farm Installation and Vessels
- Tubular steel structure mounted on the foundation that supports the nacelle and rotor at hub height.
- Tower bolt X59. Offshore Wind O&M, CTVs and SOVs
- High strength bolt joining tower flanges, periodically retorqued and inspected.
- Tower Bridge Engine Room Heritage F2. Maritime Culture, Heritage, Archaeology, Art and Museums
- Adjacent to Pool of London maritime history.
- Tower crane X15. Ports, Terminals and Stevedoring
- alternative to STS in some breakbulk yards.
- Tower Crane Project X104. Project Cargo Forwarders and Heavy Transport
- Tall tower crane used for high lifts on industrial and infrastructure sites.
- Tower internal lift X59. Offshore Wind O&M, CTVs and SOVs
- Service elevator inside the turbine tower used by technicians and small cargo.
- Tower Lashing X9. Cargo Securing, Lashing and Stability Vocabulary
- Lashing pattern for tall slender cargo.
- Tower section X42. Offshore Wind Installation and Cable Lay
- Tubular steel cylinder section assembled to form the wind turbine tower.
- Tower Section Wind X104. Project Cargo Forwarders and Heavy Transport
- Steel tower segment for a wind turbine, typically 30 to 35 meters per section.
- Tower's Liability X53. Marine Insurance, P&I and Hull Clauses
- Liability of a tug for damage to its tow, often covered by P&I or tower's liability extensions.
- TOWHIRE 2008 X13. Marine Salvage and Wreck Removal
- BIMCO international ocean towage agreement, daily hire.
- TOWHIRE 2021 X30. Tug Operations and Harbour Towage
- Revised BIMCO daily hire towage agreement.
- Towhook 4000 X30. Tug Operations and Harbour Towage
- Mampaey quick-release towing hook commonly used on modern tugs.
- Towing (ice) X27. Polar Code, Ice Navigation and Polar Operations
- Tow-notch on icebreaker stern allows close coupling of escorted ships in heavy ice.
- Towing Bridle X79. Tugs and Towage Industry
- Y-shaped assembly connecting a single towline to two attachment points on the towed object.
- Towing convoy (delivery) B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling
- Wet/dry tow for newbuild delivery.
- Towing Hawser X103. US Inland Waterway Towing and Barge
- A heavy synthetic or wire line used in coastwise or assist towage.
- Towing Hook X30. Tug Operations and Harbour Towage
- Deck fitting securing the working end of the towline on a conventional tug.
- Towing Officer's Assessment Record X103. US Inland Waterway Towing and Barge
- See TOAR.
- Towing Pin X30. Tug Operations and Harbour Towage
- Retractable pin used to guide the towline on stern-drive tugs.
- Towing Staple X30. Tug Operations and Harbour Towage
- Closed fairlead at the tow point through which the line is led.
- Towing tank B1. Naval Architecture
- Long basin for resistance and self-propulsion tests.
- Towing Vessel Inspection Bureau X103. US Inland Waterway Towing and Barge
- A USCG-recognized third-party organization performing inspections under Subchapter M.
- Towline X3. Ship Handling, Seamanship and Deck Vocabulary
- Heavy rope used in towing.
- Towline (emergency) X170. SOLAS 1974 Convention: Chapter-by-Chapter Glossary
- Pre-rigged towing arrangement on tankers of 20,000 DWT and above per SOLAS II-1/3-4.
- Toxic by Inhalation (TIH) X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers
- A subset of Class 6.1 substances classified by inhalation toxicity criteria in 2.6.2.2.4 and assigned hazard zones.
- Toxic Gas X75. IMDG Code, Classes, Packing and Segregation
- Class 2.3 gas.
- Toxic Inventory Reporting X28. Ship Recycling and End-of-Life
- Yard-level reporting of hazardous waste flows to competent authority.
- Toxic Liquid Inorganic NOS X75. IMDG Code, Classes, Packing and Segregation
- UN 3287, Class 6.1.
- Toxic Liquid Organic NOS X75. IMDG Code, Classes, Packing and Segregation
- UN 2810, Class 6.1.
- Toxic Liquid Organic NOS UN 2810 X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers
- A Class 6.1 generic entry, packing group I, II, or III based on LD50 and LC50 data with technical name.
- Toxic Solid Inorganic NOS X75. IMDG Code, Classes, Packing and Segregation
- UN 3288, Class 6.1.
- Toxic Solid Organic NOS X75. IMDG Code, Classes, Packing and Segregation
- UN 2811, Class 6.1.
- Toxic Substances Control Act (TSCA) X118. Ship Recycling Yards, Beaches and Regulation
- US law restricting PCB import; affects US-flag vessels routed to non-US recyclers.
- Toxicity (Ammonia Fuel) D6. Decarbonization, emissions and alternative fuels
- Safety concern requiring strict mitigation for ammonia bunkering.
- Toxin Hazard X41. Cruise Ship Public Health and VSP/USPH
- Food safety hazard arising from chemicals or natural toxins such as ciguatera, requiring sourcing controls.
- Toyama National College of Maritime Technology X121. Maritime Education, Academies and Universities
- Japanese KOSEN with maritime engineering specialization.