Glossary

Maritime glossary, terms beginning with C (page 5)

All maritime glossary terms that begin with the letter C, drawn from every subject section. 4427 entries.

Showing 250 of 4427 terms (page 5 of 18).

CCS CSA X54. Naval Architecture Software and IACS Rules: China Classification Society additional notation CSA for direct strength and fatigue assessment of hull structures.
CCS Cybersecurity Notation X107. Maritime Cybersecurity and OT Security: China Classification Society notation addressing cyber security capabilities of classed ships.
CCS GreenShip X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Decarbonization platform from the China Classification Society for CII, EEXI, and EU compliance reporting.
CCS Hong Kong Convention Yard Certification X50. Ship Recycling, Demolition and Hong Kong Convention: Statements of Compliance issued by China Classification Society for yards in China and Pakistan.
CCS HSM X96. Hull Integrity Monitoring and Strain Gauges: Hull stress monitoring class notation issued by China Classification Society.
CCS hub X57. Ocean Energy Beyond Wind: Shared transport and storage infrastructure aggregating CO2 from multiple emitters into a common offshore sink.
CCS LNG Bunkering Notation X110. LNG Bunkering Infrastructure and Vessels: China Classification Society notation for vessels arranged for LNG bunkering.
CCS Provider X20. LNG Operations and Custody Transfer: GTT (membrane), KOGAS (KC-1), Moss Maritime/Kvaerner (spherical), IHI (SPB) are the principal designers.
CCS Surveyor X43. Marine Surveying and Warranty Surveying: A surveyor employed by China Classification Society to carry out classification and statutory work on Chinese-flag and other vessels.
CCS-Coupled Ammonia X140. Ammonia as Marine Fuel and Hydrogen Shipping: Blue NH3 with CO2 stored in Northern Lights, Greensand, or Quest sequestration sites.
CCS-Ready Methanol X111. Methanol, Ammonia and Alternative Marine Fuels: Methanol produced from natural gas with capture of process CO2, yielding lower lifecycle greenhouse gas intensity than conventional methanol.
CCSBT X10. Marine Biology, Fisheries and Oceanography: Commission for the Conservation of Southern Bluefin Tuna.
CCSBT Effective Catch Limit X87. Fishing Vessels and Fisheries Management: National allocations for Thunnus maccoyii agreed by the extended commission for three year management periods.
CCTV (Closed-Circuit Television) X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents: Shipboard surveillance often running on dedicated NVRs with weak default credentials, used as a pivot point in red-team exercises.
CCTV Analytics E3. Technology, digitalization and smart shipping: AI vision for berth and engine-room safety.
CCTV Integration X109. Maritime Autonomous Surface Ships and MASS Code: The use of closed circuit television feeds as input to onboard perception and as situational awareness for remote operators.
CCTV monitoring, lashing X76. Stevedoring, Lashing and Cargo Securing: Camera coverage of lashing bridges and exposed stacks used by some lines for damage forensics.
CCU (Carbon Capture and Utilization) X34. Decarbonization, Alternative Fuels and Carbon Pricing: Use of captured CO2 as feedstock for fuels, chemicals, or materials.
CCUS X57. Ocean Energy Beyond Wind: Carbon capture, utilization, and storage, the broader policy category that includes offshore storage projects.
CCWG X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Clean Cargo Working Group, container shipping emissions benchmarking initiative managed by BSR since 2003.
CD-adapco X54. Naval Architecture Software and IACS Rules: Original developer of STAR-CCM+ acquired by Siemens in 2016 to form Siemens Digital Industries Software.
CDB Leasing X49. Ship Finance, Leasing and Maritime Capital Markets: Leasing subsidiary of China Development Bank, a major maritime lessor.
CDB Subsea X82. Saturation Diving and Offshore Diving Operations: Chinese state-owned subsea construction division with diving capability.
CDC C1. Commercial shipping, chartering, economics and finance: Charterers' default clause.
CDC 1253 X41. Cruise Ship Public Health and VSP/USPH: Maritime Conveyance Illness or Death Investigation Form used to document AGE cases reportable to the CDC.
CDC Foreign Quarantine Regulations X41. Cruise Ship Public Health and VSP/USPH: 42 CFR Part 71 authority under which the Vessel Sanitation Program operates.
CDC Maritime Unit X41. Cruise Ship Public Health and VSP/USPH: Branch of the CDC Division of Global Migration and Quarantine that administers the VSP and receives AGE reports.
CDC Quarantine Station X41. Cruise Ship Public Health and VSP/USPH: Field office at major US ports of entry that responds to ill traveler notifications from cruise vessels.
CDC VSP X24. Cruise, Passenger Ship and Ferry Operations: US Centers for Disease Control and Prevention Vessel Sanitation Program inspecting cruise ships calling at US ports.
CDC Yellow Book X41. Cruise Ship Public Health and VSP/USPH: Health Information for International Travel reference cited by ship medical staff for itinerary-related guidance.
CDEM A4. Other IMO and ILO conventions and codes: Construction, Design, Equipment and Manning standards, the typical scope of flag-state rules.
CDI A7. Compliance, certification and enforcement: Chemical Distribution Institute, ship-inspection scheme for chemical and gas tankers.
CDI (Chemical Distribution Institute) X146. Port State Control Regimes, MoUs, and Inspection Systems: A vetting and inspection body whose CDI Marine reports are widely consulted alongside PSC findings on chemical tankers.
CDI Inspection Report X40. Tanker Vetting, SIRE and VIQ: A structured report generated through the CDI software platform after an accredited inspector completes an MIQ-based inspection.
CDI Marine Packed Cargo (MPC) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The CDI audit scheme for road and rail tankers and IBC operations supporting chemical logistics.
CDI MIQ X40. Tanker Vetting, SIRE and VIQ: The Marine Inspection Questionnaire used by CDI inspectors for chemical and gas tanker inspections.
CDI Report Validity X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The 12 month validity window of a CDI report from inspection date, after which a fresh inspection is generally required.
CDI Ship Inspection Report Exchange X40. Tanker Vetting, SIRE and VIQ: The CDI online system through which subscribing receivers and operators access marine inspection reports.
CDI Ship Owner X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The role within the CDI scheme that commissions inspections, pays inspector fees, and submits operator comments.
CDI SIR (Ship Inspection Report) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The structured CDI inspection report covering navigation, cargo, ballast, machinery, safety, and crew chapters.
CDI Submission Window X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The 14 day period within which the inspecting company must upload the CDI report to the database.
CDI-IMPCAS X40. Tanker Vetting, SIRE and VIQ: The CDI International Marine Packed Cargo Audit Scheme, governing inspection of vessels carrying packaged dangerous goods in marine trade.
CDI-M X40. Tanker Vetting, SIRE and VIQ: The marine inspection scheme operated by the Chemical Distribution Institute for chemical and gas tankers, complementary to SIRE for those trades.
CDI-M (CDI Marine) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The CDI module covering seagoing chemical tankers and gas carriers, using the Ship Inspection Report (SIR).
CDI-T (CDI Terminals) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The CDI module assessing marine terminals handling chemicals, supporting reciprocal terminal-vessel due diligence.
CDM Smith X15. Ports, Terminals and Stevedoring: international port and dredging engineering consultancy.
CDWE X42. Offshore Wind Installation and Cable Lay: Compañía De Wind, an offshore wind installation joint venture; placeholder excluded; see CDWE entry below.
CDWE Green Jade X42. Offshore Wind Installation and Cable Lay: Heavy lift installation vessel jointly operated by CSBC and DEME for Taiwan offshore wind projects.
CDWS Compressed Air Diving System X167. Major Salvage Companies, Wreck Removals, and Equipment: Air supply package used by salvage divers for shallow water cutting and patching work.
CE marking (recreational craft) B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: EU recreational craft directive marking.
CE Marking, Recreational Craft Directive F4. Recreational Boating, Yachting and Sport: EU conformity mark required for craft sold in the EU.
Cebu X58. Shipbuilding Yards and Construction: Site of Tsuneishi Heavy Industries Cebu, a Japanese-Filipino yard producing bulk carriers in the Philippines.
Cebu Doctors University Maritime Education and Training Center X121. Maritime Education, Academies and Universities: Philippine MTC providing STCW Basic Safety and Advanced Fire Fighting.
Cebu Shipyard and Engineering Works X113. Drydock and Ship Repair Yards: Tsuneishi-affiliated repair yard in Cebu, Philippines, with multiple drydocks for bulker and tanker repair.
CEC X11. Naval Vessels, Warship Systems and Naval Architecture: Cooperative Engagement Capability, USN sensor netting between Aegis ships.
CEC (Cooperative Engagement Capability) X106. Naval Surface Combatants: US Navy sensor netting system enabling shared real-time fire-control quality tracks across platforms.
Cecil Wright X125. Superyacht Industry, Builders and Brokers: London headquartered brokerage founded by Cecil Wright in 2004, known for representing the largest new build orders.
Cecil Wright & Partners X156. Superyacht Industry, Builders, and Yacht Charter Market: UK based superyacht sales brokerage specializing in central agency listings for large motor and sailing yachts.
CECON Yard X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: Historic facility name found in Alang plot registers.
CEDA X175. Port Engineering, Dredging, Breakwaters, and Quays: Central Dredging Association, the European branch of WODA, headquartered in Delft.
Cedant X4. Marine Insurance, P&I and Claims: insurer ceding risk to a reinsurer.
Cedent X117. Marine Insurance Markets, Captives and Reinsurance: The insurer transferring risk to a reinsurer under a reinsurance contract.
Cedervall X38. Propellers, Stern Gear and Shaft Lines: Swedish manufacturer of seawater-lubricated stern-tube bearings and rope guards, now part of Wartsila.
CEDEX X6. Container, Intermodal and Trade Codes: Container Equipment Data Exchange, IICL-era specification for transmitting equipment damage and repair data.
CEDRE X13. Marine Salvage and Wreck Removal: Centre of Documentation, Research and Experimentation on Accidental Water Pollution, France.
Cefitra X93. IBC Code and Chemical Tanker Operations: Brazilian chemical tanker operator providing coastal and short-sea transportation services along the South American Atlantic coast.
Cefixime X36. Shipboard Medical, Telemedicine and Seafarer Health: Oral third-generation cephalosporin listed in some flag-state ship chests.
Cefor X108. Marine Insurance and P&I Clubs: The Nordic Association of Marine Insurers, headquartered in Oslo, publishing market statistics and supporting NMIP.
Cefor (Nordic Association of Marine Insurers) X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets: Oslo-based association founded 1911; publishes Cefor Hull Trend statistics and the Nordic Marine Insurance Plan.
CEFOR Hull Index X117. Marine Insurance Markets, Captives and Reinsurance: A Nordic hull claim frequency index produced from member data, widely cited in IUMI presentations.
Cefotaxime X36. Shipboard Medical, Telemedicine and Seafarer Health: Injectable third-generation cephalosporin for severe sepsis on Category A ships.
Celebes Sea X10. Marine Biology, Fisheries and Oceanography: Western Pacific marginal sea in the Coral Triangle.
Celebrity Apex X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Edge-class ship delivered in 2020.
Celebrity Ascent X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Edge-class ship delivered in 2023.
Celebrity Beyond X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Edge-class ship delivered in 2022.
Celebrity Constellation X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Millennium-class ship delivered in 2002.
Celebrity Cruises X24. Cruise, Passenger Ship and Ferry Operations: Premium brand within Royal Caribbean Group.
Celebrity Eclipse X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Solstice-class ship delivered in 2010.
Celebrity Edge X24. Cruise, Passenger Ship and Ferry Operations: Lead ship of the Edge class delivered 2018.
Celebrity Equinox X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Solstice-class ship delivered in 2009.
Celebrity Flora X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Galapagos expedition vessel delivered in 2019.
Celebrity Infinity X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Millennium-class ship delivered in 2001.
Celebrity Millennium X64. Cruise Industry Operators, Brands and Ships: First Celebrity Cruises Millennium-class ship delivered in 2000.
Celebrity Reflection X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Solstice-class ship delivered in 2012.
Celebrity Silhouette X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Solstice-class ship delivered in 2011.
Celebrity Solstice X64. Cruise Industry Operators, Brands and Ships: First Celebrity Cruises Solstice-class ship delivered in 2008.
Celebrity Summit X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Millennium-class ship delivered in 2001.
Celebrity Xpedition X64. Cruise Industry Operators, Brands and Ships: Celebrity Cruises Galapagos vessel acquired in 2004.
Celestial equator X16. Nautical Science, Navigation and COLREGs: Projection of Earth's equator onto the celestial sphere.
Celestial fix B3. Nautical Science: Position from intercept of two or more celestial LOPs.
Celestial horizon X16. Nautical Science, Navigation and COLREGs: Great circle 90 degrees from the observer's zenith.
Celestial meridian X16. Nautical Science, Navigation and COLREGs: Great circle passing through the celestial poles and the observer's zenith.
Celestial navigation X16. Nautical Science, Navigation and COLREGs: Position determination by observing altitudes of celestial bodies.
Celestial Navigation Endorsement X160. Maritime Academies, Universities, and STCW Certification: Operational-level competency required for unlimited OOW deck officers covering sextant sights, time calculations, and astronomical position lines.
Celestial pole X16. Nautical Science, Navigation and COLREGs: Projection of Earth's pole onto the celestial sphere.
Celestial sphere B3. Nautical Science: Imaginary sphere with stars projected onto it.
Cell X45. Marine Paints, Coatings and Antifouling: Discrete electrochemical area on a steel surface where corrosion or protection currents flow.
Cell (ENC) X129. Hydrographic Offices, Survey Vessels and Marine Cartography: S-57 file containing chart data for a defined geographic area, named with an eight-character code where the first two letters identify the producer nation.
Cell Fender X79. Tugs and Towage Industry: Cylindrical rubber fender comprising an inner cell core and front frame used on tug bows and harbor structures.
Cell Guide X9. Cargo Securing, Lashing and Stability Vocabulary: Vertical structure in container hold positively locating containers without lashings.
Cell Permit X73. Marine Hydrography, Charting and ENC: An S-63 encrypted authorisation that unlocks one ENC cell for a defined period.
Cellula Solus-LR X65. ROVs, AUVs, USVs and Marine Robotics: Long-range AUV from Cellula Robotics with hydrogen fuel cell power for extended endurance survey.
Cellula Solus-XR X65. ROVs, AUVs, USVs and Marine Robotics: Extended-range AUV from Cellula Robotics designed for under-ice and trans-basin missions on fuel cell power.
Cellular 4G LTE X109. Maritime Autonomous Surface Ships and MASS Code: The mobile broadband technology used as a coastal data link for MASS, often as the primary path within harbor and near shore zones.
Cellular 5G X109. Maritime Autonomous Surface Ships and MASS Code: The newer mobile broadband generation offering higher throughput and lower latency for near shore MASS communications.
Cellular at Sea X68. Maritime Satcom and Telecommunications: Onboard GSM base station service permitting crew and passengers to roam over a maritime cellular network.
Cellular Backup X68. Maritime Satcom and Telecommunications: Use of 3G, 4G, or 5G as a complementary or backup channel to VSAT when a vessel is near shore.
Cellular caisson X175. Port Engineering, Dredging, Breakwaters, and Quays: Reinforced concrete caisson with internal cells that are flooded or filled with sand to provide stability against sliding and overturning.
Cellular cofferdam X175. Port Engineering, Dredging, Breakwaters, and Quays: Circular or diaphragm sheet pile structure filled with granular material, used as quay walls or temporary works in deep water.
Cellular Concrete Mattress X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Pre-cast concrete block mat placed over cables and pipelines for crossing or impact protection.
Cellular container ship B5. Ship Types and Individual Vessels: Container ship with cell guides.
Cellular respiration X26. Reefer Containers and Cold Chain Logistics: Living-cargo metabolism producing CO2, water, and heat; basis for CA setpoint selection.
Cellular vessel X15. Ports, Terminals and Stevedoring: container ship with vertical cell guides for stowage.
Cellulose Acetate Tape X88. Marine Surface Preparation and Coatings Application: Material of the Testex Press-O-Film replica tape used to capture a reverse impression of surface profile for measurement under ISO 8503-5.
Cellulose Nitrate X75. IMDG Code, Classes, Packing and Segregation: UN entries 2059, 2555, 2556, 2557 depending on form, Class 4.1 self reactive.
CELT X126. Marine Oil Spill Response and OPRC Regimes: Coastal Emergency Logistics Team within the US National Response Corporation.
Celtic Interconnector X91. Submarines and Submarine Cable Systems: HVDC interconnector planned between Ireland and France, rated 700 MW, with commissioning targeted in the mid-2020s.
Celtic Sea X10. Marine Biology, Fisheries and Oceanography: Atlantic shelf sea south of Ireland and west of Brittany.
CEM III/B cement B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Marine concrete binder used in caissons.
Cemas Demtas X118. Ship Recycling Yards, Beaches and Regulation: Aliaga ship recycling plot historically EU-listed, operated by Cemas Denizcilik.
Cement Asbestos Sheeting X50. Ship Recycling, Demolition and Hong Kong Convention: Older bulkhead and ceiling lining material historically used in machinery space construction, sampled during IHM development.
Cement Barge X103. US Inland Waterway Towing and Barge: A specialized covered hopper or pneumatic barge moving bulk Portland cement.
Cement Box Patch X167. Major Salvage Companies, Wreck Removals, and Equipment: Underwater concrete and timber form used to seal large hull breaches before refloating.
Cement Carrier X81. Project Cargo, Heavy-Lift and Module Carriers: Specialized self-discharging vessel for bulk cement, occasionally used in project supply chains for plant construction.
Cement Carrier Demolition X28. Ship Recycling and End-of-Life: Recycling of self-discharging cement vessels, frequently with heavy structural reinforcement.
Cement Clinker X1. Cargo Science, Commodities and Cargo Care: Lumpy IMSBC Group C, abrasive.
Cement Loader X94. Port Machinery and Quay Equipment Makers: Pneumatic or mechanical shiploader designed for dust-controlled loading of bulk cement, supplied by FLSmidth or IBAU Hamburg.
Cement terminal X15. Ports, Terminals and Stevedoring: specialized dry bulk terminal with silos and pneumatic systems.
Cement, Bulk X1. Cargo Science, Commodities and Cargo Care: Powdery Group C cargo; loaded by pneumatic systems; very dusty.
Cementing the Stinger X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Use of jacket concrete weight coating on a stinger during S-lay operations on Castoro Sei to control pipe stress.
Cemre Shipyard X113. Drydock and Ship Repair Yards: Turkish builder and repairer in the Yalova region producing fishing vessels, ferries, and offshore support craft.
CEMS X69. EGCS Scrubbers, SCR and Marine Air Emissions: Continuous Emission Monitoring System used to verify regulated pollutant concentrations in the exhaust.
CEMT X33. Inland Navigation and Barge Operations: Conference Europeenne des Ministres des Transports, the European Conference of Ministers of Transport, now the International Transport Forum.
CEMT class C4. Ports, terminals and coastal/marine civil engineering: European inland waterway class system from Class I to Class VII.
CEMT Class I X33. Inland Navigation and Barge Operations: Peniche, 38.5 m by 5.05 m, 250 to 400 tonnes capacity.
CEMT Class II X33. Inland Navigation and Barge Operations: Kempenaar, 50 to 55 m by 6.6 m, 400 to 650 tonnes.
CEMT Class III X33. Inland Navigation and Barge Operations: Gustav Konig type, 67 to 80 m by 8.2 m, 650 to 1,000 tonnes.
CEMT Class IV X33. Inland Navigation and Barge Operations: Johann Welker type, 80 to 85 m by 9.5 m, 1,000 to 1,500 tonnes.
CEMT Class Va X33. Inland Navigation and Barge Operations: Grosses Rheinschiff, 95 to 110 m by 11.4 m, 1,500 to 3,000 tonnes.
CEMT Class Vb X33. Inland Navigation and Barge Operations: Pushed convoy 172 to 185 m by 11.4 m.
CEMT Class VIa X33. Inland Navigation and Barge Operations: Wide vessel or pushed convoy 95 to 110 m by 22.8 m.
CEMT Class VIb X33. Inland Navigation and Barge Operations: Pushed convoy 185 to 195 m by 22.8 m.
CEMT Class VIc X33. Inland Navigation and Barge Operations: Large pushed convoy 270 m by 22.8 m.
CEMT Class VII X33. Inland Navigation and Barge Operations: Largest pushed convoy class, 285 m by 33 m.
CENIT Bunker Hub X72. Bunkering Hubs and Bunker Suppliers: Generic designation used by some Mediterranean traders for the Algeciras Gibraltar combined hub.
Census Date X83. ISO Container Manufacturing and Leasing: Reference date used in publication of the global container fleet census by Drewry and others.
Centaur X85. Ferries, Ro-Pax Operators and Routes: P&O Ferries hybrid ro-pax of the Fusion class delivered for Dover to Calais service.
Centennial Variability D1. Physical and chemical oceanography and marine meteorology: Climate variations on timescales of about a century.
Center for International Maritime Security (CIMSEC) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Independent forum publishing analyses on subsea cable resilience and maritime security policy.
Center for Internet Security Controls X48. Maritime Cybersecurity: Prioritized set of cybersecurity safeguards adapted by some shipping companies for fleet wide use.
Center for Mariner Advocacy X102. Seafarer Welfare and Maritime Charities: Seamen's Church Institute of New York and New Jersey program providing legal services and advocacy for merchant mariners.
Center for Maritime Studies National University of Singapore X121. Maritime Education, Academies and Universities: CMS NUS, founded 2004, conducts maritime economics and policy research alongside Singapore Maritime Academy.
Center for Seafarers' Rights X154. Maritime Welfare, Seafarer Charities, and MLC Rights: New York-based legal-aid program founded by the Seamen's Church Institute.
Center of buoyancy (B) B1. Naval Architecture: Centroid of the displaced volume.
Center of flotation (F) B1. Naval Architecture: Centroid of the waterplane area.
Center of Gravity (CoG) X104. Project Cargo Forwarders and Heavy Transport: Three-dimensional balance point of a project unit, critical for slinging and trailer placement.
Center of gravity (G) B1. Naval Architecture: Mass centroid of the ship.
Center of lateral resistance (CLR) B1. Naval Architecture: Effective center of underwater side-force.
Center Post X83. ISO Container Manufacturing and Leasing: Vertical structural member of a flatrack with collapsible ends.
Center Pump Room X103. US Inland Waterway Towing and Barge: The midships pump house of an inland tank barge housing cargo and stripping pumps.
Centerboard X84. Yacht Racing, Regattas and Sailing Governance: A retractable keel-like foil used on dinghies and some keelboats for lateral resistance.
Centerlead X79. Tugs and Towage Industry: Towing fairlead positioned on the centerline of the bow or stern.
Centerline X3. Ship Handling, Seamanship and Deck Vocabulary: Fore-and-aft line dividing the ship into port and starboard halves.
Centerline Cut X60. Marine Salvage and Wreck Removal: Longitudinal hull severance technique used in wreck dismantling.
Centerline keel block X58. Shipbuilding Yards and Construction: Lowest building block laid first on the dock blocks, establishing the keel reference.
Centerline Slot Jackup X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Slot-type jackup with the drilling slot located within the hull rather than cantilevered overboard.
Centi-bar X16. Nautical Science, Navigation and COLREGs: Unit equal to 10 millibars; rarely used at sea.
Centistoke (cSt) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Unit of kinematic viscosity, 1 cSt = 1 mm2/s.
Centistokes X75. IMDG Code, Classes, Packing and Segregation: Unit of kinematic viscosity referenced in some IMDG entries for viscous flammable liquids.
Central agent X125. Superyacht Industry, Builders and Brokers: The exclusive listing broker for sale or charter of a specific yacht.
Central Bank of Iran X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: A body designated under EO 13599 and subsequent measures, relevant to letter-of-credit-based shipping payments.
Central Commission for Navigation of the Rhine X73. Marine Hydrography, Charting and ENC: CCNR, the inland regulator whose Inland ENC specification predates the S-100 framework.
Central Control Room X82. Saturation Diving and Offshore Diving Operations: Compartment from which the Saturation Control Supervisor manages the dive.
Central Control Station X170. SOLAS 1974 Convention: Chapter-by-Chapter Glossary: Continuously manned station with safety and fire-protection equipment indication required for periodically unattended machinery spaces (SOLAS II-1/E).
Centralised cooling X19. Engine Room Watchkeeping and UMS Operations: System using sea water only in central cooler, with freshwater serving all engine room consumers.
Centralised Route Scheduling X73. Marine Hydrography, Charting and ENC: CRS+, a ChartCo ENC update management service.
Centralized Information System X146. Port State Control Regimes, MoUs, and Inspection Systems: A generic term covering THETIS, APCIS, CIALA, and similar PSC databases that exchange inspection results among member authorities.
Centralized Surveillance X41. Cruise Ship Public Health and VSP/USPH: VSP system that compiles AGE reports across the cruise fleet for trend monitoring and outbreak detection.
Centre for Coastal and Ocean Mapping (CCOM) X129. Hydrographic Offices, Survey Vessels and Marine Cartography: University of New Hampshire research center partnering with NOAA on multibeam algorithms and the Open Navigation Surface BAG format.
Centre for Effective Dispute Resolution X114. Maritime Arbitration and Shipping Law Firms: London mediation provider offering shipping mediations under CEDR Rules.
Centre for Maritime Studies X55. Marine Simulators, Training and Maritime Academies: Singapore-based academic unit at the National University of Singapore researching shipping economics and policy.
Centre for Maritime Studies of the University of Wollongong X121. Maritime Education, Academies and Universities: UoW research centre supporting the Australian National Centre for Ocean Resources and Security.
Centre for Maritime Studies, Singapore F3. Seafaring Life, Education, Professions and Institutions: NUS-based maritime research center.
Centre for Seafarers' Rights X102. Seafarer Welfare and Maritime Charities: Earlier name of the Seamen's Church Institute legal advocacy program serving US mariners.
Centre Hull (Trimaran) X132. High-Speed Craft, Hydrofoils and Ferry Operators: Main load-bearing hull of a trimaran HSC such as Austal's Benchijigua Express, flanked by two smaller amas.
Centre Lead X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral: Fairlead located on the ship's centreline at the bow or stern, often a closed Panama chock on ocean-going ships.
Centre of Buoyancy (B) X9. Cargo Securing, Lashing and Stability Vocabulary: Geometric center of underwater volume.
Centre of Flotation (F) X9. Cargo Securing, Lashing and Stability Vocabulary: Centroid of waterplane area.
Centre of Gravity (G) X9. Cargo Securing, Lashing and Stability Vocabulary: Point where total weight is considered to act.
Centre Tank (Reg 1 Annex I) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: A cargo tank inboard of a longitudinal bulkhead, defined in Reg 1.10 of Annex I for use in tank size and arrangement calculations.
Centreline shaft alignment X59. Offshore Wind O&M, CTVs and SOVs: Optical or laser based check of the geometric alignment of generator and gearbox shafts on a turbine drivetrain.
Centric diatom X18. Ballast Water, Biofouling and Antifouling: Group of phytoplankton commonly found in ballast water, target of the 10 to 50 micron D-2 size class.
Centrica X42. Offshore Wind Installation and Cable Lay: UK energy company that previously held stakes in Race Bank and Lincs offshore wind farms.
Centrica Energy X123. Offshore Wind Installation Vessels and Operators: UK utility operator of Lincs and Lynn and Inner Dowsing wind farms, divested most stakes to ESB and others.
Centrifugal pump X19. Engine Room Watchkeeping and UMS Operations: Rotodynamic pump with impeller, used for sea water, ballast, fire, and bilge service.
Centrifugal purifier B2. Marine Engineering: Self-cleaning separator for fuel and lube oil (Alfa Laval, GEA).
Centrifugal separator X47. Marine Fuel Quality and ISO 8217: Rotating bowl device that uses density difference to remove water and solids from fuel, with disc stack configurations dominating marine practice.
Centrifugal Wheel Blast X88. Marine Surface Preparation and Coatings Application: Airless surface preparation method covered by ISO 8504-2 in which a rotating bladed wheel throws abrasive against the workpiece.
Centrifuge X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Purifier or clarifier separating water and solids from fuel and lube oil.
Centro Internazionale Radio Medico (CIRM) X36. Shipboard Medical, Telemedicine and Seafarer Health: Rome-based TMAS founded 1935 by Guido Guida; provides free 24/7 medical advice in multiple languages.
Centrocon X17. Chartering, Shipbroking and Freight Trading: BIMCO grain voyage charter party for River Plate trade.
CENTROCON Arbitration Clause X51. Maritime Arbitration, Law and BIMCO Clauses: A historic centralized London arbitration clause once standard in grain charters.
Centrocon Strike Clause X51. Maritime Arbitration, Law and BIMCO Clauses: A traditional clause allocating strike risk in voyage charters.
Centroid Position X91. Submarines and Submarine Cable Systems: Calculated mid-point of cable slack used during repair grapnel runs.
Centurion X65. ROVs, AUVs, USVs and Marine Robotics: Work-class ROV originally built by Perry Slingsby Systems and operated by Subsea 7, now under the Forum Energy Technologies portfolio.
Cepsa X61. Marine Lubricants and Cylinder Oils: Spanish energy company that supplies marine lubricants and bunker fuels in Iberian and selected international ports.
Cepsa Marine X61. Marine Lubricants and Cylinder Oils: Marine business unit of Cepsa providing cylinder, system, and auxiliary lubricants.
CEPSA Tenerife Refinery X72. Bunkering Hubs and Bunker Suppliers: Refining source for bunker grades delivered into Santa Cruz de Tenerife anchorage.
CEPT X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: European Conference of Postal and Telecommunications Administrations, source of inland AIS and ATIS regulations.
Cepton LiDAR X109. Maritime Autonomous Surface Ships and MASS Code: A solid state LiDAR product family with marine hardened variants used in some MASS perception stacks.
Ceramic Nozzle X88. Marine Surface Preparation and Coatings Application: Blast nozzle liner of silicon carbide, boron carbide, or tungsten carbide selected for wear life and cost relative to expected hours of service.
Cereal Grains X1. Cargo Science, Commodities and Cargo Care: Wheat, rye, oats, barley, corn; covered by International Grain Code.
Cerium Slabs Ingots or Rods X75. IMDG Code, Classes, Packing and Segregation: UN 1333, Class 4.1 flammable solid.
Cermaq X87. Fishing Vessels and Fisheries Management: Norwegian and Chilean salmon farming company operating well boats and service craft, owned by Mitsubishi Corporation.
Cermaq Group AS X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Salmon farmer headquartered in Oslo and owned by Mitsubishi Corporation since 2014, operating in Norway, Chile and Canada with around 200,000 tonnes harvested annually.
CERSAT D5. Coastal processes, sea-level, cryosphere and ocean observation science: French center processing satellite sea ice data.
CERT-EU X139. Maritime Cybersecurity, OT Threats and Standards: EU Computer Emergency Response Team, source of advisories relevant to European-flagged operators.
CERT-FR X25. Maritime Cybersecurity, OT and IT: French government CERT operated by ANSSI.
CERT-Maritime X48. Maritime Cybersecurity: Generic label for maritime sector computer emergency response capabilities, with national equivalents such as Singapore's MarSec and France's M-CERT.
Certas Energy Marine X72. Bunkering Hubs and Bunker Suppliers: UK independent supplier providing bunkers and lubricants at multiple British ports.
Certificate Authority X48. Maritime Cybersecurity: Entity that issues digital certificates used for ship to shore TLS and code signing.
Certificate of Approval X75. IMDG Code, Classes, Packing and Segregation: Document issued by competent authority for portable tanks, MEGCs and certain Class 1 packagings.
Certificate of approval, CSC X76. Stevedoring, Lashing and Cargo Securing: Document issued by an administration or its agent confirming a container design or examination programme meets the CSC Convention.
Certificate of Class X5. Marine Surveying and Inspection: Document issued by class confirming the vessel is in class.
Certificate of Class Withdrawal X28. Ship Recycling and End-of-Life: Class society document confirming the ship has ceased to be classed for recycling.
Certificate of Competency X21. STCW Certificates, Crewing and Seafarer Welfare: CoC, primary STCW qualification issued by a flag State after examination and sea service.
Certificate of Competency (CoC) X160. Maritime Academies, Universities, and STCW Certification: National maritime authority issued license attesting that a seafarer meets STCW competency standards for a specific capacity.
Certificate of Competency (Skipper, Fishing) X87. Fishing Vessels and Fisheries Management: National qualification for command of a fishing vessel, structured around STCW-F categories.
Certificate of Compliance (ISPS) E1. Maritime security, geopolitics and risk: International Ship Security Certificate (ISSC) issued by RSO/flag.
Certificate of Compliance (STCW-F) X87. Fishing Vessels and Fisheries Management: Document evidencing that a fishing vessel officer or crew member meets STCW-F 1995 standards.
Certificate of Entry X53. Marine Insurance, P&I and Hull Clauses: The document issued by a P&I club evidencing the terms of entry of a vessel for the policy year.
Certificate of Financial Responsibility X167. Major Salvage Companies, Wreck Removals, and Equipment: Document required under the Nairobi Wreck Removal Convention proving insurance to cover wreck removal costs.
Certificate of Financial Responsibility (COFR) X53. Marine Insurance, P&I and Hull Clauses: Evidence required by the US Coast Guard under OPA 90 that a vessel has the financial means to meet pollution liabilities in US waters.
Certificate of Fitness X40. Tanker Vetting, SIRE and VIQ: The IBC or IGC Code certificate naming the cargoes the vessel is permitted to carry, central to chemical and gas tanker vetting.
Certificate of Fitness (COF) X5. Marine Surveying and Inspection: Statutory certificate for chemical and gas carriers under IBC and IGC Codes.
Certificate of Free Pratique X86. Port Agency, Husbandry and Disbursement: Health authority document allowing the vessel to commence port operations.
Certificate of Insurance X4. Marine Insurance, P&I and Claims: document issued under an open cover evidencing insurance on a specific shipment.
Certificate of Insurance (WRC) X99. Marine Salvage Awards and SCOPIC: Document required under the Nairobi Wreck Removal Convention evidencing insurance for wreck removal liabilities.
Certificate of Inventory of Hazardous Materials X28. Ship Recycling and End-of-Life: International certificate under HKC Regulation 5 and Appendix 3.
Certificate of Medical Fitness to Dive X82. Saturation Diving and Offshore Diving Operations: Document issued by a Diving Medical Examiner.
Certificate of Origin (Provisions) X120. Marine Catering, Provisions and Ship Chandlers: Required by some customs authorities for meat and dairy on chandler deliveries.
Certificate of Polar Ship X27. Polar Code, Ice Navigation and Polar Operations: Polar Ship Certificate issued by Administration or RO certifying compliance with Polar Code Part I-A.
Certificate of Proficiency X21. STCW Certificates, Crewing and Seafarer Welfare: CoP, STCW certificate for short courses such as PSCRB or AFF, separate from a CoC.
Certificate of Proficiency (CoP) X160. Maritime Academies, Universities, and STCW Certification: STCW document issued for specific endorsements such as PSCRB, AFF, Medical Care, or tanker familiarization.
Certificate of Quality X115. Marine Bunker and Cargo Surveying: Laboratory document accompanying a bunker delivery summarizing test results against the ISO 8217 grade specification.
Certificate of Quantity X115. Marine Bunker and Cargo Surveying: Surveyor or terminal document stating the measured quantity of cargo or bunkers delivered, expressed in cubic meters and metric tons.
Certificate of Registry F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Ship's document evidencing flag registration.
Certificate of Salvage Performance X13. Marine Salvage and Wreck Removal: Document signed by master and salvor on contract termination.
Certificate of Sanitary Construction X41. Cruise Ship Public Health and VSP/USPH: Document issued by the VSP after a satisfactory construction inspection of a new build or major refit.
Certificate of Survey X5. Marine Surveying and Inspection: Document recording satisfactory completion of a statutory or class survey.