Glossary

Maritime glossary, terms beginning with D (page 10)

All maritime glossary terms that begin with the letter D, drawn from every subject section. 2401 entries.

Showing 151 of 2401 terms (page 10 of 10).

Dubai Boat Show F4. Recreational Boating, Yachting and Sport: Major Middle Eastern marine industry exhibition.
Dubai International Boat Show X35. Yacht and Superyacht Industry: Annual yacht show held at Dubai Harbour.
Dubai Maritime City F3. Seafaring Life, Education, Professions and Institutions: Purpose-built maritime cluster in the UAE.
Dubai Petroleum Bunker Service X72. Bunkering Hubs and Bunker Suppliers: Limited bunker supply at Mina Rashid, Mina Jebel Ali, and offshore Persian Gulf anchorages.
Dubai-based Cash Buyer X118. Ship Recycling Yards, Beaches and Regulation: Subset of cash-buyer industry concentrated in Dubai including GMS Dubai, Best Oasis, and Star Asia Shipping.
Dublin X85. Ferries, Ro-Pax Operators and Routes: Irish capital port served by Stena Line, Irish Ferries, and P&O Ferries to Holyhead and Liverpool.
Dublin Swift X85. Ferries, Ro-Pax Operators and Routes: Irish Ferries high-speed craft operating Dublin to Holyhead in summer season.
Dubois Naval Architects X125. Superyacht Industry, Builders and Brokers: Late Ed Dubois's firm, designer of many large Royal Huisman and Vitters sailing yachts.
Dubrovnik X64. Cruise Industry Operators, Brands and Ships: Croatian Adriatic cruise port and UNESCO World Heritage Site.
Dubuque X103. US Inland Waterway Towing and Barge: An Iowa river city adjacent to Lock and Dam 11 on the Upper Mississippi.
DUC X123. Offshore Wind Installation Vessels and Operators: Dansk Undergrunds Consortium, original developer of Horns Rev 1 with Elsam, since reorganized.
Duct Burner X69. EGCS Scrubbers, SCR and Marine Air Emissions: Auxiliary burner used in some SCR arrangements to maintain catalyst inlet temperature.
Duct Keel (Fishing Vessel) X87. Fishing Vessels and Fisheries Management: Structural channel along the bottom of larger fishing vessels for piping runs and access.
Ducted propeller X38. Propellers, Stern Gear and Shaft Lines: Propeller operating inside a fixed annular nozzle (Kort 19A, 37, or 22), increasing thrust at heavy loading.
Ducted turbine X57. Ocean Energy Beyond Wind: General class of marine current device with a shroud around the rotor, used historically by OpenHydro.
Ductwork block X58. Shipbuilding Yards and Construction: Preassembled HVAC duct module installed in accommodation blocks before closure.
Dudgeon X42. Offshore Wind Installation and Cable Lay: UK offshore wind farm off Norfolk owned by Equinor, Masdar, and Statkraft.
Dudinka X52. Polar Code, Arctic and Antarctic Shipping: Russian port on the Yenisei River in Krasnoyarsk Krai handling nickel and copper concentrates from Norilsk via the NSR.
Due Diligence X29. Ship Sale and Purchase, Management Contracts and Valuation: Buyers' legal, technical, and commercial review before signing.
Due Diligence (Charterer) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The structured screening process a charterer performs on the vessel, owner, operator, and crew before fixture.
Due Diligence Audit, Cash Buyer X50. Ship Recycling, Demolition and Hong Kong Convention: The compliance review by cargo owners, financiers, and charterers of the recycling supply chain selected for a vessel.
Due Diligence Clause X53. Marine Insurance, P&I and Hull Clauses: A clause, particularly in IHC, conditioning cover on the assured exercising due diligence to maintain and operate the vessel.
Due process X152. Maritime Arbitration and Dispute Resolution: Fundamental fairness requirements protected under Article V(1)(b) of the New York Convention and reflected in national arbitration statutes.
Due Regard A6. Public international law of the sea: Standard of conduct between competing high seas freedoms (UNCLOS Article 87(2)).
Dues, Pilotage X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Fees charged for pilotage service, normally combining a base charge with tonnage-based, draft-based, and movement-based components.
Dufour Yachts F4. Recreational Boating, Yachting and Sport: French production yacht brand.
Duga X42. Offshore Wind Installation and Cable Lay: Historical Soviet radar; included only to disambiguate from offshore wind project naming.
Dugong X10. Marine Biology, Fisheries and Oceanography: *Dugong dugon*, a seagrass-grazing sirenian of the Indo-Pacific.
Duisburg X92. Marine Steel Suppliers and Shipbuilding Plate: ThyssenKrupp Steel Europe headquarters and main integrated steelmaking complex on the Rhine.
Duisburg-Ruhrort X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: The Rhine port at the mouth of the Ruhr, the largest inland port in Europe, operated by Duisport AG.
DUKC C2. Ship operations, crewing and technical management: Dynamic under-keel clearance management system.
DUKC system C4. Ports, terminals and coastal/marine civil engineering: Dynamic under-keel clearance system, used at deepwater ports.
Duke-class X62. Naval Warships and Combat Systems: Royal Navy Type 23 anti-submarine frigate class with ships named after British dukes.
Duke-class frigate X106. Naval Surface Combatants: Royal Navy Type 23 anti-submarine frigate class of sixteen ships built between 1985 and 2002.
Dumb Barge X33. Inland Navigation and Barge Operations: Non-propelled barge moved by tug or pusher.
Dummies X22. Piracy, Maritime Security and Armed Protection: Mannequins placed on deck to give the impression of a larger crew, a BMP passive measure.
Dummy minefield X77. Naval Mine Warfare and Mine Countermeasures: A field of inert objects laid to deceive enemy intelligence and impose mine countermeasures effort.
Dump cooler X19. Engine Room Watchkeeping and UMS Operations: Cooler dissipating excess heat from freshwater system when waste heat recovery exceeds demand.
Dump Valve X82. Saturation Diving and Offshore Diving Operations: Exhaust valve venting chamber gas during decompression.
Dumping at Sea D3. Marine environmental science, pollution and conservation: Disposal of wastes at sea, regulated under the London Convention.
Dunant X91. Submarines and Submarine Cable Systems: Google-sponsored trans-Atlantic submarine cable system, approximately 6,400 km, employing space-division multiplexing.
Dunant (cable system) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: 6,400 km transatlantic cable from Virginia Beach to Saint-Hilaire-de-Riez, France, the first Google private cable using 12 fiber pairs at 250 Tbps.
Duncan (HMS) D37 X106. Naval Surface Combatants: Sixth and final Royal Navy Type 45 Daring-class destroyer, commissioned 2013.
Dundee X39. Pre-1900 Maritime History: Scottish East Coast port and a major center of nineteenth-century whaling and jute-clipper construction.
Dungeness X39. Pre-1900 Maritime History: English headland on the Channel, a long-established pilotage and lookout station.
Dungeness crab X10. Marine Biology, Fisheries and Oceanography: *Metacarcinus magister*, an important North Pacific commercial crab.
Dunkerque X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: French North Sea bunker port served by TotalEnergies and Rubis Terminal.
Dunkerque Form 7 X113. Drydock and Ship Repair Yards: Large graving dock in Dunkirk, France, used by Damen Shiprepair Dunkerque for cruise ship and ULCC work.
Dunkerque-Escaut X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: The northern French canal corridor linking Dunkerque to the Belgian border, upgraded to CEMT Class Va.
Dunkirk X85. Ferries, Ro-Pax Operators and Routes: French port hosting DFDS Seaways services to Dover.
Dunkirk LNG X56. LNG/LPG Carriers and IGC Code: LNG import terminal at Loon-Plage, France, operated by Dunkerque LNG and commissioned in 2017.
Dunlaoghaire Institute of Art Design and Technology Maritime X121. Maritime Education, Academies and Universities: IADT Ireland; minor maritime media role rather than seafarer training.
Dunnage X1. Cargo Science, Commodities and Cargo Care: Disposable wood, mats, or air bags used to protect, separate, and chock cargo.
Dunnage Survey X5. Marine Surveying and Inspection: Verification of dunnage type, condition, and adequacy for cargo support.
Duplex 2205 X92. Marine Steel Suppliers and Shipbuilding Plate: Austenitic ferritic stainless steel UNS S32205 widely used for chemical tanker cargo tanks.
Duplex 2304 X92. Marine Steel Suppliers and Shipbuilding Plate: Lean duplex stainless steel UNS S32304 used where moderate corrosion resistance and strength are required.
Duplex 2507 X92. Marine Steel Suppliers and Shipbuilding Plate: Super duplex stainless steel UNS S32750 used for aggressive chemical service.
Duplex repair X122. Submarine Cable Laying, Repair Vessels and Operators: Repair method involving cutting out a damaged section and inserting a new cable bight with two final joints, the standard procedure where a single in-line joint is impractical.
Duplex stainless shaft X38. Propellers, Stern Gear and Shaft Lines: Tailshaft fabricated from duplex stainless steel (e.g., UNS S31803) for seawater-lubricated installations.
Duplex stainless steel B2. Marine Engineering: Used in seawater pumps and scrubber piping.
Duplicate Cell X73. Marine Hydrography, Charting and ENC: An ENC cell issued by more than one producer; resolved under IHO WEND principles in favour of the coastal state.
Duqm Bunker Service X72. Bunkering Hubs and Bunker Suppliers: Bunker supply at the Port of Duqm Oman by OQ Trading and Asyad Bunkering.
Durand Reef X167. Major Salvage Companies, Wreck Removals, and Equipment: Remote reef in New Caledonia where the KEA Trader grounded on 12 July 2017 and ultimately broke apart.
Duration Clause X53. Marine Insurance, P&I and Hull Clauses: The clause specifying when cover attaches and ceases, including the warehouse-to-warehouse provision in Institute Cargo Clauses.
Durban X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: South African east coast bunker port with Engen Marine and Astron Energy as suppliers, attending Anchorage at Buoy 8.
Durban Bunker Service X72. Bunkering Hubs and Bunker Suppliers: Bunker supply at the Port of Durban by Astron Energy, Engen, and Total Marine through ship to ship and truck to ship modes.
Durban Container Terminal X138. Global Container Terminal Operators and Port Equipment: South Africa's largest box facility operated by Transnet Port Terminals, 2.7 million TEU handled FY2023.
Durgapur X92. Marine Steel Suppliers and Shipbuilding Plate: SAIL integrated steel plant in West Bengal, India, producing plate, rail, and structural sections.
Dust Assessment X88. Marine Surface Preparation and Coatings Application: ISO 8502-3 method using transparent pressure-sensitive tape to evaluate dust quantity and size on blast-cleaned surfaces, rated by classes 0 to 5 for quantity and classes 0 to 5 for particle size.
Dust Cap X20. LNG Operations and Custody Transfer: Protective cap fitted on hard arm couplings between operations to prevent moisture ingress.
Dust contamination X45. Marine Paints, Coatings and Antifouling: Residue from blasting that must be removed to ISO 8502-3 limits before coating.
Dust Explosion X1. Cargo Science, Commodities and Cargo Care: Combustion of suspended fine combustible dust (grain, coal, sulfur).
Dust suppression X15. Ports, Terminals and Stevedoring: water spray, wind fences, or enclosed conveyors to control dust.
Dustpan dredger X124. Dredging Industry and Reclamation Contractors: USACE Mississippi River dredger with wide horizontal suction mouth, exemplified by Hurley and Jadwin.
Dutch Caribbean Ship Registry (SCR) X156. Superyacht Industry, Builders, and Yacht Charter Market: Curacao based open registry operating under the Kingdom of the Netherlands recognized for yachts.
Dutch East India Company (VOC) F1. Maritime History: Chartered 1602, the first multinational joint-stock company and dominant Asian trader of the seventeenth century.
Dutch GAAP X49. Ship Finance, Leasing and Maritime Capital Markets: National accounting framework relevant to certain ABN AMRO era ship financings.
Dutch Golden Age Marine Painting F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Seventeenth century genre with van de Velde, Bakhuizen, and Vroom.
Dutch Maritime Ministry X102. Seafarer Welfare and Maritime Charities: English name often used for Maritime Ministry Nederland, the Dutch ecumenical seafarers' chaplaincy.
Dutch Safety Board (Onderzoeksraad voor Veiligheid, OVV) X163. Marine Accident Investigation Agencies and Landmark Inquiries: Independent Dutch investigation board established under the Dutch Safety Board Act 2005, based in The Hague, whose maritime section investigates accidents involving Dutch-flag ships and incidents in…
Dutch Ship Registry X98. Ship Registries and Flag States: Netherlands national ship register administered by the Kadaster and the Inspectie Leefomgeving en Transport.
Dutch Tonnage Tax X98. Ship Registries and Flag States: EU-approved Netherlands tonnage tax regime applied to qualifying shipping companies.
Dutch West India Company (WIC) X39. Pre-1900 Maritime History: Trading company chartered in 1621 to operate in the Atlantic and the Americas.
Dutch Yacht Builders (DYB) X156. Superyacht Industry, Builders, and Yacht Charter Market: Trade association representing the leading Dutch superyacht shipyards and supply chain.
Dutchman's log X16. Nautical Science, Navigation and COLREGs: Crude speed measurement by timing a floating object along a known ship length.
Duty engineer X19. Engine Room Watchkeeping and UMS Operations: Officer holding the engineering watch or, in UMS mode, on call during the night.
Duty Free Stores X120. Marine Catering, Provisions and Ship Chandlers: See Bonded Stores.
Duty of Care of Cargo X51. Maritime Arbitration, Law and BIMCO Clauses: The carrier's obligation to load, handle, stow, carry, keep, care for, and discharge the goods properly and carefully.
Duty of Fair Presentation X4. Marine Insurance, P&I and Claims: assured's duty under section 3 of the Insurance Act 2015 to disclose every material circumstance known or which ought to be known.
Duty to Cooperate X99. Marine Salvage Awards and SCOPIC: Obligation of owner, master, cargo owner, and salvor under Article 8 to cooperate in salvage operations.
Duyfken (replica) X128. Sail Training Ships and Tall Ship Associations: Dutch replica built 1999 at Fremantle Western Australia of the 1606 VOC jacht, 20 m length, used for sail training and re enactment voyages.
DV X6. Container, Intermodal and Trade Codes: Dry van, North American term for a standard dry container.
DV20 X83. ISO Container Manufacturing and Leasing: Common marketing abbreviation for a 20-foot dry van container.
DV40 X83. ISO Container Manufacturing and Leasing: Common marketing abbreviation for a 40-foot dry van container.
DVB Bank X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: German transport finance bank and founding Poseidon Principles signatory.
DVB-RCS X68. Maritime Satcom and Telecommunications: Return channel via satellite standard historically used in some maritime VSAT systems.
DVB-S X68. Maritime Satcom and Telecommunications: Digital Video Broadcasting Satellite standard, the first generation modulation used on many VSAT carriers.
DVB-S2 X68. Maritime Satcom and Telecommunications: Second-generation DVB satellite standard widely used on maritime VSAT networks.
DVB-S2X X68. Maritime Satcom and Telecommunications: Extension of DVB-S2 adding more modulation and coding options for improved efficiency.
DVL X65. ROVs, AUVs, USVs and Marine Robotics: Doppler velocity log used to measure vehicle velocity over the seabed by bottom tracking acoustic returns.
DVZ-OWS X63. Marine Auxiliary Machinery and Pumps: Oily water separator series from DVZ-Services achieving the 15 ppm MARPOL limit.
DVZ-Services X63. Marine Auxiliary Machinery and Pumps: German manufacturer of marine oily water separators, including DVZ-SKA and DVZ-OWS series.
DVZ-SKA X63. Marine Auxiliary Machinery and Pumps: Coalescer-based bilge water separator from DVZ used widely on container ships.
DWDM (Dense Wavelength Division Multiplexing) X91. Submarines and Submarine Cable Systems: Optical transmission technique used on submarine cable systems to carry many wavelengths on each fiber pair.
Dwell time X15. Ports, Terminals and Stevedoring: duration containers or cargo remain in the terminal.
Dwight D. Eisenhower (USS) CVN-69 X106. Naval Surface Combatants: Second Nimitz-class aircraft carrier, commissioned 1977.
DWT X20. LNG Operations and Custody Transfer: Deadweight tonnage; conventional LNG carriers typically 80,000 to 100,000 DWT.
Dye Penetrant Test (DPT) X5. Marine Surveying and Inspection: NDT method for surface crack detection during structural surveys.
Dykstra Naval Architects X35. Yacht and Superyacht Industry: Dutch sailing-yacht specialist studio based in Amsterdam, known for classic and modern sailing superyachts.
Dynagas LNG Partners X134. LNG and LPG Carrier Operators and Containment Systems: NYSE listed master limited partnership owning six ice class LNGCs, sponsor George Prokopiou.
Dynagas Ltd X134. LNG and LPG Carrier Operators and Containment Systems: Greek parent of Dynagas LNG Partners operating fleet of 15 ice class LNG carriers in Arctic and conventional trades.
Dynamic Allowable Stress X54. Naval Architecture Software and IACS Rules: Higher permissible stress allowed under dynamic load cases in CSR-BC+OT compared to static cases.
Dynamic balancing (propeller) X38. Propellers, Stern Gear and Shaft Lines: Two-plane balancing of large propellers performed before fitting, mainly for high-speed and naval applications.
Dynamic Bandwidth Allocation X68. Maritime Satcom and Telecommunications: Mechanism that assigns capacity to terminals on demand based on traffic and contention rules.
Dynamic Brake Holding X30. Tug Operations and Harbour Towage: Winch brake performance under dynamic loading rather than static.
Dynamic Cable X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Submarine cable used on floating offshore structures designed to withstand cyclic loading from wave and current motion.
Dynamic Draft Correction X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Correction for vessel squat, settlement, and load changes applied to multibeam soundings to obtain true depth.
Dynamic Equilibrium Method X54. Naval Architecture Software and IACS Rules: Iterative scheme used in DFBI and Star-CCM+ to balance hydrodynamic forces and ship inertia.
Dynamic friction coefficient X76. Stevedoring, Lashing and Cargo Securing: Reduced friction value applied for cargo subject to vessel motions, used in CSS Annex 13.
Dynamic launch X58. Shipbuilding Yards and Construction: Launching method in which the hull slides into water under gravity from inclined ways.
Dynamic Positioning X13. Marine Salvage and Wreck Removal: Computer-controlled thruster station keeping for salvage and dive vessels.
Dynamic Positioning (DP) E4. Cruise, offshore energy and auxiliary/specialised fleets: Computer-controlled station-keeping via thrusters.
Dynamic Positioning (Fishing Vessel) X87. Fishing Vessels and Fisheries Management: Used on some well boats and large factory vessels for station keeping at quayside transfer.
Dynamic positioning (footprint) B1. Naval Architecture: Watch-circle radius in DP station-keeping.
Dynamic positioning (ice) X27. Polar Code, Ice Navigation and Polar Operations: DP operation in ice requires special equipment classes and ice management.
Dynamic Positioning Class 2 (DP2) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Redundancy standard for cable-lay and pipelay vessels enabling station-keeping without a single point of failure.
Dynamic Positioning Class 3 X67. Marine Electrical Systems and Shore Power: IMO MSC/Circ.645 DP notation requiring fully redundant power and electrical systems with physical separation.
Dynamic Positioning Cyber Risk X48. Maritime Cybersecurity: Risk that compromise of DP control, reference, or sensor systems leads to loss of position with safety consequences for offshore operations.
Dynamic positioning fuel use X34. Decarbonization, Alternative Fuels and Carbon Pricing: DP operation included in FuelEU and EU MRV scope when associated with covered voyages.
Dynamic Positioning Heavy Lift X60. Marine Salvage and Wreck Removal: Position keeping by DP-equipped crane vessels during platform installation and removal.
Dynamic Positioning Induction Course X55. Marine Simulators, Training and Maritime Academies: Nautical Institute-accredited entry course providing theoretical knowledge of DP systems and station-keeping.
Dynamic Positioning Operator (DPO) Certification X160. Maritime Academies, Universities, and STCW Certification: Nautical Institute scheme for DP operators required on offshore support vessels and DP class shuttle tankers.
Dynamic Positioning Simulator X144. Bridge Simulators, Engine Room Simulators, and Maritime Training Equipment: STCW A-II/1 and IMO Model Course 6.10 trainer for DP class 1, 2, and 3 vessel operators.
Dynamic Positioning Simulator Course X55. Marine Simulators, Training and Maritime Academies: Nautical Institute-accredited simulator course in which trainees operate a DP class 2 or 3 console under instructor scenarios.
Dynamic Positioning Software E3. Technology, digitalization and smart shipping: Control loop for thrusters maintaining heading/position.
Dynamic Positioning System (DPS) X139. Maritime Cybersecurity, OT Threats and Standards: Computer-controlled station-keeping system reliant on GNSS and gyro inputs, a Cat III CBS under IACS UR E26.
Dynamic positioning thruster X38. Propellers, Stern Gear and Shaft Lines: Azimuthing or tunnel thruster integrated in a DP system to maintain station against environmental loads.
Dynamic Positioning vessel (DP-1/2/3) B5. Ship Types and Individual Vessels: Vessel rated by DP redundancy.
Dynamic Question Set X40. Tanker Vetting, SIRE and VIQ: A SIRE 2.0 feature in which the questionnaire issued to a specific inspection is tailored to vessel type, trade, and prior inspection history.
Dynamic Seal X63. Marine Auxiliary Machinery and Pumps: Sealing arrangement that uses fluid motion or pressure differential to prevent leakage along a rotating shaft.
Dynamic stability X162. Naval Architecture, Stability, Resistance, and Structural Design: Energy required to heel the ship from upright to a given angle, equal to the area under the GZ curve between those angles times displacement.
Dynamic Stability Training X160. Maritime Academies, Universities, and STCW Certification: Component of master and chief mate syllabi covering intact and damaged stability assessment under STCW A-II/2.
Dynamic trim B1. Naval Architecture: Trim variation with speed due to sinkage moments.
Dynamic Trim Optimization X78. Voyage Optimization and Vessel Performance Software: A continuous process of computing and recommending the optimum trim for current speed, draft, and conditions to minimize hull resistance.
Dynamic viscosity X61. Marine Lubricants and Cylinder Oils: Absolute viscosity of a fluid expressed in pascal seconds or centipoise.
Dynamic Window Approach X109. Maritime Autonomous Surface Ships and MASS Code: A local motion planning algorithm that searches over admissible velocities in a short time window, used in marine autonomy.
Dynamite X75. IMDG Code, Classes, Packing and Segregation: UN 0081 Class 1.1D explosive based on nitroglycerin.
DynaPower X67. Marine Electrical Systems and Shore Power: Marine power electronic converters used in some battery-hybrid and shore-power conversion installations.
Dyneema F4. Recreational Boating, Yachting and Sport: High-modulus polyethylene running rigging line common in racing yachts.
Dyneema SK78 X94. Port Machinery and Quay Equipment Makers: DSM-developed high-modulus polyethylene fiber used by rope makers such as Lankhorst for mainline mooring ropes.
Dyneema sling X42. Offshore Wind Installation and Cable Lay: High modulus polyethylene synthetic sling used in lighter offshore wind rigging applications.