Glossary

Maritime glossary, terms beginning with D (page 3)

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

Showing 250 of 2401 terms (page 3 of 10).

Deck Motion X31. Helicopter Operations on Ships: Combined pitch, roll, and heave of a vessel affecting landing limits.
Deck Officer F3. Seafaring Life, Education, Professions and Institutions: Navigation-watchkeeping officer holding an STCW deck CoC.
Deck Officer Cadet X160. Maritime Academies, Universities, and STCW Certification: Trainee enrolled in an MET institution pursuing the qualifications for STCW A-II/1 OOW Unlimited certification.
Deck Officer Familiarization Record X40. Tanker Vetting, SIRE and VIQ: Documentation that joining officers have completed vessel-specific familiarization, reviewed under VIQ Chapter 3.
Deck Officer Pre-Sea Training X55. Marine Simulators, Training and Maritime Academies: Pre-employment program meeting STCW Regulation II/1 academic and practical requirements for officer-in-charge certification.
Deck Offset X31. Helicopter Operations on Ships: Difference between helideck reference point and vessel motion center.
Deck Pad X9. Cargo Securing, Lashing and Stability Vocabulary: Pad eye welded to deck.
Deck paint X45. Marine Paints, Coatings and Antifouling: Coating system designed for atmospheric exposure of weather decks, often including antiskid aggregate.
Deck plan X24. Cruise, Passenger Ship and Ferry Operations: Schematic of cabins, public rooms, and safety equipment by deck.
Deck Rating F3. Seafaring Life, Education, Professions and Institutions: Non-officer crew member of the deck department.
Deck Reinforcement Plan X104. Project Cargo Forwarders and Heavy Transport: Drawings showing additional support fitted on a vessel deck for a heavy project unit.
Deck steward X24. Cruise, Passenger Ship and Ferry Operations: Pool-deck service crew member.
Deck Stores X120. Marine Catering, Provisions and Ship Chandlers: IMPA section 19 covering ropes, paints, and deck consumables, distinct from provisions.
Deck Stow X46. Container Terminal Operations: Container stowage above the hatch covers, secured by twistlocks, lashing rods, and turnbuckles.
Deck stow reefer X26. Reefer Containers and Cold Chain Logistics: On-deck reefer slot, often with better ambient air but more solar gain.
Deck Strength X81. Project Cargo, Heavy-Lift and Module Carriers: Specified maximum load per square meter on a vessel's weather deck, critical for module loading.
Deck Strength Drawing X104. Project Cargo Forwarders and Heavy Transport: Vessel plan stating allowable uniform and point loads across the deck.
Deck Survey X43. Marine Surveying and Warranty Surveying: An inspection of decks, hatch covers, cranes, mooring equipment, and deck outfitting for condition, corrosion, and operational integrity.
Deck tank X56. LNG/LPG Carriers and IGC Code: Independent IGC Type C tank installed above deck on small-scale LNG and LPG vessels.
Deck Tank Sounding X69. EGCS Scrubbers, SCR and Marine Air Emissions: Routine measurement of caustic, urea or sludge tank levels associated with EGCS operations.
Deck Tensioner X91. Submarines and Submarine Cable Systems: Linear cable engine on a cable ship's deck for controlling cable pay-out tension.
Deck Water Seal X93. IBC Code and Chemical Tanker Operations: Component of an inert gas system that prevents back-flow of hydrocarbon vapor from the cargo tanks into the inert gas plant.
Deck wetness B1. Naval Architecture: Frequency of green-water shipping on deck.
Deck Winch X103. US Inland Waterway Towing and Barge: A powered winch used to tension wires during coupling and breaking tow.
Decked Vessel X87. Fishing Vessels and Fisheries Management: Fishing vessel with a continuous weather deck, a structural threshold in FAO statistical categorization.
Deckhand X35. Yacht and Superyacht Industry: Junior deck crew member handling cleaning, lines, tenders, and watchkeeping.
Deckhead X3. Ship Handling, Seamanship and Deck Vocabulary: Underside of a deck, the ceiling of a compartment.
Decks and superstructure (icing) X27. Polar Code, Ice Navigation and Polar Operations: Subject to topside icing requiring removal in cold weather operations.
Declaration X4. Marine Insurance, P&I and Claims: notice to underwriters under an open cover or floating policy specifying the shipment to attach.
Declaration Linked Policy X4. Marine Insurance, P&I and Claims: cargo policy where the total sum insured is reduced as declarations are made.
Declaration of General Average X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: Formal declaration by the master or shipowner that an act constituting GA has occurred, triggering the adjustment process.
Declaration of Maritime Labour Compliance X21. STCW Certificates, Crewing and Seafarer Welfare: DMLC, two part document required under MLC Title 5 and Regulation 5.1.3.
Declaration of Maritime Labour Compliance (DMLC) X102. Seafarer Welfare and Maritime Charities: Two-part ship document required under MLC 2006, comprising Part I from the flag state and Part II from the shipowner.
Declaration of Non-Liability X51. Maritime Arbitration, Law and BIMCO Clauses: A claim form by which a putative defendant in a maritime dispute seeks a judicial finding that no liability exists.
Declaration of Salvage Services X13. Marine Salvage and Wreck Removal: Formal LOF notification served on owner and cargo interests.
Declaration of Salved Values X99. Marine Salvage Awards and SCOPIC: Statement by cargo and vessel interests of the values brought into safety, used for apportionment.
Declaration of Security X22. Piracy, Maritime Security and Armed Protection: ISPS document recording security responsibilities between a ship and a port facility or another ship.
Declaration of Security (DoS) E1. Maritime security, geopolitics and risk: ISPS-required agreement between ship and port or two ships.
Declared Cargo X1. Cargo Science, Commodities and Cargo Care: Cargo properly named per IMDG/IMSBC; opposite of misdeclared.
Declared Cargo Information X9. Cargo Securing, Lashing and Stability Vocabulary: Shipper documentation per SOLAS VI/2.
Declared gross mass X76. Stevedoring, Lashing and Cargo Securing: Container gross mass stated by the shipper, replaced under SOLAS VI/2 by the Verified Gross Mass.
Declination X16. Nautical Science, Navigation and COLREGs: Angular distance of a body north or south of the celestial equator.
Declination (dec) B3. Nautical Science: Celestial latitude of a body.
Declinational Tide D2. Hydrography, tides, waves, bathymetry and marine geology: Tidal constituent linked to lunar or solar declination.
Decline test X15. Ports, Terminals and Stevedoring: brake test on inclined ramps for ro-ro tractors.
Decommissioning X14. Offshore Oil and Gas Marine Operations: End-of-life removal or making safe of offshore facilities.
Decommissioning Heavy Lift X60. Marine Salvage and Wreck Removal: Single lift removal of offshore platform topsides and jackets, exemplified by Allseas Pioneering Spirit.
Decommissioning Notice X50. Ship Recycling, Demolition and Hong Kong Convention: The owner notification to the flag state of intent to recycle, paired with the application for the Ready for Recycling Certificate.
Decommissioning plan X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: The owner's documented plan for taking a vessel out of service and transferring it to recycling.
Decommissioning Pollution D3. Marine environmental science, pollution and conservation: Environmental impact of removing offshore infrastructure.
Decommissioning weight B1. Naval Architecture: Lightship weight after stripping, used in recycling estimates.
Decomposition X75. IMDG Code, Classes, Packing and Segregation: Chemical breakdown that for Class 5.2 peroxides drives the SADT used for stowage temperature controls.
Decomposition Temperature X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: Temperature reference for self-reactive Class 4.1 and organic peroxide Class 5.2 substances requiring temperature control.
Decompression X82. Saturation Diving and Offshore Diving Operations: Controlled reduction of ambient pressure to allow inert gas off-gassing.
Decompression Chamber X82. Saturation Diving and Offshore Diving Operations: Surface chamber for treatment or surface decompression of divers.
Decompression Computer X82. Saturation Diving and Offshore Diving Operations: Wrist or panel-mounted device calculating decompression obligation.
Decompression illness X36. Shipboard Medical, Telemedicine and Seafarer Health: Diving casualty managed with 100% oxygen, fluids, and urgent recompression; relevant for diving-support vessels.
Decompression Profile X82. Saturation Diving and Offshore Diving Operations: Schedule of stops and ascent rates for a given exposure.
Decompression Schedule X82. Saturation Diving and Offshore Diving Operations: Tabulated stop depths and times for a planned dive.
Decompression Sickness X75. IMDG Code, Classes, Packing and Segregation: Diving condition unrelated to IMDG, listed only to flag MFAG coverage of compressed gas exposures.
Decompression Stop X82. Saturation Diving and Offshore Diving Operations: Defined depth at which the diver waits to off-gas before continuing ascent.
Decompression Table X82. Saturation Diving and Offshore Diving Operations: Tabular set of schedules such as US Navy Air or DCIEM tables.
Decoy launcher X11. Naval Vessels, Warship Systems and Naval Architecture: Mk 36 SRBOC and Nulka systems for chaff, IR, and active decoys.
Decryption Key X48. Maritime Cybersecurity: Key required to recover encrypted data, sometimes withheld by ransomware operators after payment.
Dedicated Hose X41. Cruise Ship Public Health and VSP/USPH: Potable water hose used only for potable transfer, marked and stored to prevent cross-contamination.
Dedicated ladder lighting X32. Marine Pilotage and Pilot Operations: Lighting fitted by the ship to illuminate the pilot ladder and area of boarding during darkness, required by SOLAS V/23.
Dedicated LNG Bunker Vessel X110. LNG Bunkering Infrastructure and Vessels: Vessel specifically designed and operated to deliver LNG as fuel to receiving ships via ship-to-ship transfer.
Deductible X4. Marine Insurance, P&I and Claims: amount of each claim borne by the assured before the policy responds, also called franchise or excess.
Deductible Clause X4. Marine Insurance, P&I and Claims: ITC Hulls 1/10/83 clause 12 setting the per-event deductible, with heavy weather aggregation.
Deductions from Hire X17. Chartering, Shipbroking and Freight Trading: Charterer's offsets such as off-hire periods, owner's expenses or bunker disputes.
Deed of Covenant X29. Ship Sale and Purchase, Management Contracts and Valuation: Supplemental security document accompanying ship mortgage.
Deed of Gift Match X84. Yacht Racing, Regattas and Sailing Governance: An America's Cup contested under the bare terms of the 1887 Deed of Gift, as in the 33rd edition in 2010.
Deep X3. Ship Handling, Seamanship and Deck Vocabulary: Sounding between marked fathoms on the lead line.
Deep Cleaning X41. Cruise Ship Public Health and VSP/USPH: Scheduled disassembly cleaning of galley equipment between routine sanitation activities.
Deep Constructor X82. Saturation Diving and Offshore Diving Operations: TechnipFMC heavy construction vessel.
Deep Contour X73. Marine Hydrography, Charting and ENC: The depth contour selected by the ECDIS operator beyond which the vessel may safely navigate without grounding risk.
Deep cycle battery bank X59. Offshore Wind O&M, CTVs and SOVs: Battery installation aboard hybrid CTVs and SOVs providing peak shaving and harbor maneuvering power.
Deep Discoverer X82. Saturation Diving and Offshore Diving Operations: TechnipFMC subsea construction vessel.
Deep Diving Support X60. Marine Salvage and Wreck Removal: Use of saturation diving systems for wreck survey and intervention work below normal air diving depths.
Deep Draft Survey X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Survey designed to meet IHO S-44 Exclusive Order specifications for fairways used by commercial deep-draft vessels.
Deep Drain Cleaning X50. Ship Recycling, Demolition and Hong Kong Convention: The high-pressure jetting of cargo and slop tank drainage systems before gas free certification.
Deep Energy X82. Saturation Diving and Offshore Diving Operations: TechnipFMC 194 m rigid pipelay vessel commissioned 2014 with diving capability.
Deep frozen cargo X70. Reefer Containers and Cold Chain Shipping: Commodities such as tuna and certain seafood carried at minus 25 degrees Celsius or colder, sometimes to minus 60 degrees Celsius in specialty units.
Deep Inspector X82. Saturation Diving and Offshore Diving Operations: TechnipFMC IRM and survey vessel.
Deep Learning Perception X109. Maritime Autonomous Surface Ships and MASS Code: The use of deep neural networks for vessel and obstacle detection in MASS perception stacks.
Deep Marine Services X65. ROVs, AUVs, USVs and Marine Robotics: Subsea contractor that historically operated work-class ROVs in the Persian Gulf and Asia Pacific region.
Deep Packet Inspection X48. Maritime Cybersecurity: Network analysis technique that examines protocol payloads, used selectively in shipboard monitoring.
Deep Packet Inspection (DPI) E1. Maritime security, geopolitics and risk: Network-traffic analysis for cyber defense.
Deep Reach X124. Dredging Industry and Reclamation Contractors: Dredging Today industry term for deepwater operations beyond 30 m draft.
Deep saline aquifer X57. Ocean Energy Beyond Wind: Porous and permeable rock formation containing saltwater, the primary storage medium for projects like Northern Lights and Endurance.
Deep Salvage X13. Marine Salvage and Wreck Removal: Operations in water depths beyond saturation diving, dependent on ROV and lift systems.
Deep scattering layer (DSL) X10. Marine Biology, Fisheries and Oceanography: Sound-reflecting layer in the mesopelagic, formed by mesopelagic fish and invertebrates that vertically migrate diurnally.
Deep Sea Bottom Trawling Resolution X87. Fishing Vessels and Fisheries Management: UN General Assembly Resolutions 61/105 and 64/72 calling for protection of vulnerable marine ecosystems from bottom gears.
Deep Sea Drilling Project (DSDP) D2. Hydrography, tides, waves, bathymetry and marine geology: Predecessor of ODP and IODP that recovered seafloor cores.
Deep Sea Salvage X99. Marine Salvage Awards and SCOPIC: Salvage operations beyond coastal waters, often involving long ocean tows and weather routing.
Deep Sea Seafarer X102. Seafarer Welfare and Maritime Charities: Seafarer engaged on international voyages, the principal category covered by MLC 2006.
Deep sea sequestration X34. Decarbonization, Alternative Fuels and Carbon Pricing: Geological storage of CO2 beneath the seabed, e.g. Northern Lights.
Deep Sea Tankers Singapore X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Local operator of bunker tankers attending Eastern Petroleum Anchorage deliveries.
Deep Sea Towing X79. Tugs and Towage Industry: Towage operation conducted on ocean voyages, typically of unmanned barges, rigs, or dead ships.
Deep Seabed Mining A6. Public international law of the sea: Activities in the Area, regulated by ISA under UNCLOS Part XI and the 1994 Implementing Agreement.
Deep Submergence Rescue Vehicle (DSRV) E2. Naval, defence and maritime law enforcement: Submersible for stricken-submarine rescue.
Deep tank X18. Ballast Water, Biofouling and Antifouling: Cargo tank that can also be used as a ballast tank, more common on older vessels.
Deep Tow Sled X80. Maritime Search and Rescue Coordination: Underwater search asset used in subsurface SAR following loss of aircraft.
Deep Trekker DTG3 X65. ROVs, AUVs, USVs and Marine Robotics: Portable observation ROV from Deep Trekker designed for shallow inspection by a single operator.
Deep Trekker Revolution X65. ROVs, AUVs, USVs and Marine Robotics: Battery-powered observation ROV from Deep Trekker with a rotating thruster pod for hands-free heading control.
Deep U-type Scrubber X69. EGCS Scrubbers, SCR and Marine Air Emissions: Inverted U arrangement with extended absorber leg for increased gas-liquid contact.
Deep Water Horizon (Deepwater Horizon) X126. Marine Oil Spill Response and OPRC Regimes: Transocean semisubmersible whose April 20, 2010 blowout at MC252 released 4.9 million barrels of Macondo crude, the largest accidental marine oil spill in history.
Deep water mooring X42. Offshore Wind Installation and Cable Lay: Mooring systems for floating wind platforms in water depths typically beyond 100 meters.
Deep water quay X175. Port Engineering, Dredging, Breakwaters, and Quays: Quay wall designed for vessels with drafts greater than about 14 meters, typical of modern container, bulk, and tanker terminals.
Deep Water Recovery X167. Major Salvage Companies, Wreck Removals, and Equipment: Specialty salvage discipline using ROVs and saturation divers for casualties beyond air diving depth.
Deep Well Pump X63. Marine Auxiliary Machinery and Pumps: Submersible pump installed at the bottom of cargo tanks on chemical and product tankers.
Deep Western Boundary Current (DWBC) D1. Physical and chemical oceanography and marine meteorology: Equatorward flow of North Atlantic Deep Water along the western Atlantic.
Deep-draught route X16. Nautical Science, Navigation and COLREGs: Charted route surveyed for vessels of deep draught.
Deep-freeze container X26. Reefer Containers and Cold Chain Logistics: Reefer rated to approximately -29 to -35 C minimum, suitable for ice cream and frozen seafood.
Deep-laid mine X77. Naval Mine Warfare and Mine Countermeasures: A mine moored or bottomed at considerable depth to threaten submarines and deep-draft vessels.
Deep-Sea Archaeology F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Discipline using ROVs and AUVs to investigate abyssal wrecks.
Deep-Sea Cable Monitoring E3. Technology, digitalization and smart shipping: DAS-based fiber-cable surveillance.
Deep-Sea Fan D2. Hydrography, tides, waves, bathymetry and marine geology: Sediment fan built at the mouth of a submarine canyon.
Deep-sea lead B3. Nautical Science: Hand sounding lead, historical practice.
Deep-Sea Mining Vessel E4. Cruise, offshore energy and auxiliary/specialised fleets: Vessel for polymetallic nodule collection (developmental).
Deep-sea pilot X15. Ports, Terminals and Stevedoring: pilot navigating routes such as the English Channel or Skagerrak.
Deep-Tow Sonar D5. Coastal processes, sea-level, cryosphere and ocean observation science: Sonar towed close to the seabed for high resolution imaging.
Deep-water alongside method X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: Recycling at a permanent quay where the vessel remains afloat during dismantling, used in some Chinese and Turkish yards.
Deep-water S-lay X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Pipelay configuration using a long stinger and elevated tension to install pipelines in water depths beyond 1,500 m.
Deepening project C4. Ports, terminals and coastal/marine civil engineering: Capital dredging to increase channel depth.
Deepsea Worker X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Multi-purpose subsea support vessel formerly used by Subsea 7, configured for IRM and cable maintenance.
DeepStar Joint Industry Project X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: US Gulf of Mexico research consortium addressing deepwater pipeline, riser, and flow-assurance challenges.
Deepwater Drillship E4. Cruise, offshore energy and auxiliary/specialised fleets: Dynamically positioned drillship for ultra-deepwater wells.
Deepwater Horizon X14. Offshore Oil and Gas Marine Operations: Transocean semi-submersible lost 2010 at Macondo; 11 fatalities; largest US marine oil spill.
Deepwater Horizon Litigation (US) X143. Landmark Maritime Law Cases and Doctrines: Multidistrict litigation arising from the 2010 Macondo blowout.
Deepwater Nautilus X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Transocean fifth-generation semisubmersible based on the RBS-6 design rated for 8,000 foot water depth.
Deepwater Operations Conference X119. Maritime Conferences, Trade Shows and Awards: Annual upstream offshore event held in Galveston since 2003.
Deepwater port C4. Ports, terminals and coastal/marine civil engineering: Port capable of receiving large draft vessels.
Deepwater Saturation Diving X141. Marine Salvage Industry and Wreck Removal Contractors: Mixed-gas diving from a saturation system for work below 50 meters.
Deepwater Wind X42. Offshore Wind Installation and Cable Lay: US offshore wind developer behind Block Island, now part of Orsted US.
Deepwell Pump X1. Cargo Science, Commodities and Cargo Care: Submerged pump for chemical and product tankers.
DEF X69. EGCS Scrubbers, SCR and Marine Air Emissions: Diesel Exhaust Fluid, a US designation for urea-water solution used in SCR systems.
Default Award X51. Maritime Arbitration, Law and BIMCO Clauses: An award issued where one party fails to participate in the reference despite proper notice.
Default Credentials X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents: Unchanged factory passwords, the leading cause of compromise in satcom and bridge equipment as documented by Pen Test Partners' Maritime research.
Default Emission Factor D6. Decarbonization, emissions and alternative fuels: Standardized factor used when measured data are unavailable.
Default Interest X49. Ship Finance, Leasing and Maritime Capital Markets: Penalty rate charged on overdue amounts under a shipping loan.
Defect Reporting (TMSA Element 6) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The operator's structured process for capturing, categorizing, and closing defects, audited under TMSA.
Defective Container X83. ISO Container Manufacturing and Leasing: Box with damage exceeding cargo-worthy criteria pending repair.
Defective pilot ladder X32. Marine Pilotage and Pilot Operations: Non-conforming ladder identified during boarding, IMPA annual campaign documents incidents.
DeFelsko X88. Marine Surface Preparation and Coatings Application: US manufacturer of PosiTector coating inspection instruments and PosiTest adhesion testers.
Defence Cover X108. Marine Insurance and P&I Clubs: Insurance for the legal costs of pursuing or defending shipowners in commercial disputes, marketed as FD&D by P&I clubs.
Defence Cover (FDD) X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets: Freight, Demurrage, and Defence cover for legal costs in commercial disputes, offered by all IG clubs and standalone FD&D clubs.
Defender X65. ROVs, AUVs, USVs and Marine Robotics: VideoRay tethered observation ROV designed for defense, security and inspection missions with modular payload bays.
Defender (Cup) X84. Yacht Racing, Regattas and Sailing Governance: The yacht and syndicate selected by the holding club to defend the America's Cup.
Defender (HMS) D36 X106. Naval Surface Combatants: Royal Navy Type 45 Daring-class destroyer, commissioned 2013.
Defender for Endpoint X107. Maritime Cybersecurity and OT Security: Microsoft endpoint detection and response platform integrated with the Microsoft 365 security suite.
Defender for IoT X25. Maritime Cybersecurity, OT and IT: Microsoft OT and IoT detection platform incorporating CyberX technology.
Defender for Office 365 X107. Maritime Cybersecurity and OT Security: Microsoft secure email gateway providing protection against phishing and malicious attachments.
Defender-class X130. National Coast Guards and Cutter Fleets: USCG 25-foot Response Boat-Small operated by every USCG station, over 400 hulls.
Defense Articles E2. Naval, defence and maritime law enforcement: Items controlled under US ITAR.
Defense Cover X53. Marine Insurance, P&I and Hull Clauses: Cover for the legal costs of pursuing or defending disputes incidental to the operation of the entered vessel, often a separate FD&D class.
Defense in Depth X48. Maritime Cybersecurity: Layered security strategy combining technical, procedural, and physical controls.
Defense Sea Transportation Service F3. Seafaring Life, Education, Professions and Institutions: US wartime predecessor of MSC.
Defense Search and Rescue X80. Maritime Search and Rescue Coordination: Military-led SAR component coordinated with civil RCCs.
Defensive minefield X77. Naval Mine Warfare and Mine Countermeasures: A minefield laid by a friendly force to protect harbors, anchorages, and coastal approaches.
Deferred Call X108. Marine Insurance and P&I Clubs: A supplementary contribution levied by a P&I club after the policy year, reflecting actual underwriting and pool results.
Deferred Drawdown X49. Ship Finance, Leasing and Maritime Capital Markets: Loan facility under which advances are taken in tranches matched to construction milestones.
Deferred Month X44. Shipping Indices, FFAs and Freight Markets: FFA contract for a calendar month other than the front month, traded as part of forward curve strategy.
Deferred Premium X4. Marine Insurance, P&I and Claims: premium installment payable after inception.
Deferred rebate C1. Commercial shipping, chartering, economics and finance: Rebate paid to loyal liner shippers after a qualifying period.
Deferred Salvage Award X60. Marine Salvage and Wreck Removal: Award delayed pending arbitration outcomes or environmental assessment.
Defibrillator pads (adult and pediatric) X36. Shipboard Medical, Telemedicine and Seafarer Health: Dual-set electrodes for AED units on passenger ships.
Deficiency C2. Ship operations, crewing and technical management: PSC finding requiring rectification.
Deficiency category X7. Flag State, Port State Control and Detention Vocabulary: Two-digit numeric grouping of PSC findings by subject area, ranging from 01 to 18 in the IMO list.
Deficiency Claim X49. Ship Finance, Leasing and Maritime Capital Markets: Claim against the borrower for any shortfall between vessel sale proceeds and outstanding debt.
Deficiency Code X66. Port State Control and Regional MOUs: Five-digit numerical code identifying the nature of a deficiency in MOU databases.
Deficiency code 01 X7. Flag State, Port State Control and Detention Vocabulary: Certificates and documentation, including ship, crew and cargo certificates.
Deficiency Code 01000 X66. Port State Control and Regional MOUs: Certificates and Documentation.
Deficiency Code 01xxx (Certificates and Documentation) X146. Port State Control Regimes, MoUs, and Inspection Systems: The IMO PSC deficiency code group covering ship certificates and documentation.
Deficiency code 02 X7. Flag State, Port State Control and Detention Vocabulary: Structural conditions, including hull damage, corrosion and ballast tank coatings.
Deficiency Code 02000 X66. Port State Control and Regional MOUs: Structural Conditions.
Deficiency Code 02xxx (Structural Conditions) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering hull, watertight integrity, and structural deficiencies.
Deficiency code 03 X7. Flag State, Port State Control and Detention Vocabulary: Water and weathertight conditions, including hatch covers, doors and side scuttles.
Deficiency Code 03000 X66. Port State Control and Regional MOUs: Water/Weathertight Conditions.
Deficiency Code 03xxx (Water/Weathertight Conditions) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering load lines, hatch covers, and weathertight closures.
Deficiency code 04 X7. Flag State, Port State Control and Detention Vocabulary: Emergency systems, including emergency generator, fire pump and lighting.
Deficiency Code 04000 X66. Port State Control and Regional MOUs: Emergency Systems.
Deficiency Code 04xxx (Emergency Systems) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering emergency lighting, emergency generator, and emergency stops.
Deficiency code 05 X7. Flag State, Port State Control and Detention Vocabulary: Radio communications, including GMDSS equipment and batteries.
Deficiency Code 05000 X66. Port State Control and Regional MOUs: Radiocommunications.
Deficiency Code 05xxx (Radio Communications) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering GMDSS and radio installations.
Deficiency code 06 X7. Flag State, Port State Control and Detention Vocabulary: Cargo operations including equipment, covering loading, securing and cargo gear.
Deficiency Code 06000 X66. Port State Control and Regional MOUs: Cargo Operations including Equipment.
Deficiency Code 06xxx (Cargo Operations including Equipment) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering cargo handling gear and cargo system deficiencies.
Deficiency code 07 X7. Flag State, Port State Control and Detention Vocabulary: Fire safety, including fixed and portable extinguishing systems, fire doors and means of escape.
Deficiency Code 07000 X66. Port State Control and Regional MOUs: Fire Safety.
Deficiency Code 07xxx (Fire Safety) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering fire detection, fire-fighting equipment, and structural fire protection.
Deficiency code 08 X7. Flag State, Port State Control and Detention Vocabulary: Alarms, including general alarm, fire detection and bilge alarms.
Deficiency Code 08000 X66. Port State Control and Regional MOUs: Alarms.
Deficiency Code 08xxx (Alarms) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering general, machinery, and navigation alarms.
Deficiency code 09 X7. Flag State, Port State Control and Detention Vocabulary: Working and living conditions, covering accommodation, food and water.
Deficiency Code 09000 X66. Port State Control and Regional MOUs: Working and Living Conditions.
Deficiency Code 09xxx (Working and Living Conditions) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering MLC accommodation, food, and welfare items.
Deficiency code 10 X7. Flag State, Port State Control and Detention Vocabulary: Safety of navigation, including charts, publications, lights and bridge equipment.
Deficiency Code 10000 X66. Port State Control and Regional MOUs: Safety of Navigation.
Deficiency Code 10xxx (Safety of Navigation) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering nautical publications, charts, navigation lights, and bridge equipment.
Deficiency code 11 X7. Flag State, Port State Control and Detention Vocabulary: Life saving appliances, including lifeboats, liferafts, davits and immersion suits.
Deficiency Code 11000 X66. Port State Control and Regional MOUs: Life Saving Appliances.
Deficiency Code 11xxx (Life Saving Appliances) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering lifeboats, liferafts, immersion suits, and pyrotechnics.
Deficiency Code 12xxx (Dangerous Goods) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering IMDG and IMSBC compliance.
Deficiency code 13 X7. Flag State, Port State Control and Detention Vocabulary: Propulsion and auxiliary machinery, including main engine, generators and steering gear.
Deficiency Code 13000 X66. Port State Control and Regional MOUs: Propulsion and Auxiliary Machinery.
Deficiency Code 13xxx (Propulsion and Auxiliary Machinery) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering main propulsion, auxiliary engines, and steering gear.
Deficiency code 14 X7. Flag State, Port State Control and Detention Vocabulary: Pollution prevention MARPOL, covering Annex I to VI requirements.
Deficiency Code 14000 X66. Port State Control and Regional MOUs: Pollution Prevention (MARPOL Annexes I-VI).
Deficiency Code 14xxx (Pollution Prevention) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering MARPOL Annexes I through VI.
Deficiency code 15 X7. Flag State, Port State Control and Detention Vocabulary: ISM, non-conformities with the International Safety Management Code.
Deficiency Code 15000 X66. Port State Control and Regional MOUs: ISM (International Safety Management).
Deficiency Code 15xxx (ISM) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering International Safety Management Code deficiencies.
Deficiency Code 16000 X66. Port State Control and Regional MOUs: ISPS (International Ship and Port Facility Security).
Deficiency Code 16xxx (ISPS) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group covering ship security deficiencies.
Deficiency code 17 X7. Flag State, Port State Control and Detention Vocabulary: ISPS, non-conformities with the International Ship and Port Facility Security Code.
Deficiency Code 17000 X66. Port State Control and Regional MOUs: Other.
Deficiency Code 17xxx (Other) X146. Port State Control Regimes, MoUs, and Inspection Systems: The catch-all group for deficiencies not classified elsewhere.
Deficiency code 18 X7. Flag State, Port State Control and Detention Vocabulary: MLC, non-conformities with the Maritime Labour Convention, 2006.
Deficiency Code 18000 X66. Port State Control and Regional MOUs: MLC 2006 (Maritime Labour Convention).
Deficiency Code 18xxx (MLC, 2006) X146. Port State Control Regimes, MoUs, and Inspection Systems: The group for Maritime Labour Convention deficiencies introduced after 2013.
Deflagration X1. Cargo Science, Commodities and Cargo Care: Subsonic combustion wave; relevant to dust and vapor explosions.
Deflection Angle X9. Cargo Securing, Lashing and Stability Vocabulary: Angle of lashing from vertical or horizontal, affecting effective securing force.
Deflection Boom X126. Marine Oil Spill Response and OPRC Regimes: Boom angled to current to divert oil toward a collection point rather than fully containing it.
Deflection Correction X155. Marine Surveying Practice and Cargo Inspection: A draft survey correction that accounts for the ship's bending (hog or sag) between perpendiculars, derived from the six draft readings.
DEFLECTION CRITERIA X54. Naval Architecture Software and IACS Rules: Class limits on local panel and frame deflections under design loads.
Deflection Gauge X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: Dial micrometer instrument fitted between crankshaft webs to measure axial gap variation around one full revolution.
Deflection Monitoring X96. Hull Integrity Monitoring and Strain Gauges: Measurement of relative displacement between hull points to assess global deformation under load.
Defoe, Daniel X39. Pre-1900 Maritime History: English author whose 1719 novel Robinson Crusoe drew on the marooning of Alexander Selkirk.
Deformed ice X27. Polar Code, Ice Navigation and Polar Operations: Ice piled up by pressure into ridges, rafts, or hummocks.
Defrost cycle X26. Reefer Containers and Cold Chain Logistics: Periodic evaporator heating to clear frost; initiated by timer, demand sensor, or pressure differential.
Defueling X91. Submarines and Submarine Cable Systems: Process of removing nuclear fuel from a decommissioned submarine reactor.
Degaussing X77. Naval Mine Warfare and Mine Countermeasures: The active reduction of a ship's magnetic signature using onboard current-carrying coils to counter influence mines.
Degree 1 MASS X109. Maritime Autonomous Surface Ships and MASS Code: Ship with automated processes and decision support where seafarers are on board to operate and control shipboard systems.
Degree 2 MASS X109. Maritime Autonomous Surface Ships and MASS Code: Remotely controlled ship with seafarers on board, able to take control and operate shipboard systems.
Degree 3 MASS X109. Maritime Autonomous Surface Ships and MASS Code: Remotely controlled ship without seafarers on board.
Degree 4 MASS X109. Maritime Autonomous Surface Ships and MASS Code: Fully autonomous ship that determines and executes actions by itself.
Dehler Yachts F4. Recreational Boating, Yachting and Sport: German production cruiser-racer brand.
DEHP D3. Marine environmental science, pollution and conservation: Common phthalate plasticizer studied as marine micropollutant.
Dehradun X73. Marine Hydrography, Charting and ENC: The headquarters city of the Indian National Hydrographic Office.
Dehradun (Indian Naval Hydrographic Office) X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Headquarters of the National Hydrographic Office of India at 107A Rajpur Road, Dehradun, established in 1954 and producing Indian INT charts and INENC cells.
Dehumidification X1. Cargo Science, Commodities and Cargo Care: Removing moisture from cargo hold air using refrigerant or desiccant units.
Deicing equipment (Polar Code) X27. Polar Code, Ice Navigation and Polar Operations: Means to remove ice accretion required by Polar Code Part I-A Chapter 3.
Del Monte X70. Reefer Containers and Cold Chain Shipping: United States headquartered producer and shipper of bananas, pineapples, and other fresh produce moving in reefer containers and conventional reefer vessels.
Del Monte Fresh Produce X136. Reefer Vessels and Cool Chain Operators: US-headquartered fruit and vegetable major with Mediterranean Shipping reefer container contracts and historic reefer ship ownership through Network Shipping Limited.
Delamination X45. Marine Paints, Coatings and Antifouling: Separation of coating layers or of the coating from the substrate.
Delay charge X32. Marine Pilotage and Pilot Operations: Pilotage fee for time spent by a pilot waiting due to ship-caused delay.
Delegated Authority X117. Marine Insurance Markets, Captives and Reinsurance: The market segment where Lloyd's syndicates underwrite via coverholders and managing general agents.
Delegated Management Plan (RFMO) X87. Fishing Vessels and Fisheries Management: Plan adopted by a Regional Fisheries Management Organization for a specific stock or fishery.