Glossary

Maritime glossary, terms beginning with R (page 3)

All maritime glossary terms that begin with the letter R, drawn from every subject section. 2097 entries.

Showing 250 of 2097 terms (page 3 of 9).

Recreational Facilities (MLC Regulation 3.1) X102. Seafarer Welfare and Maritime Charities: MLC 2006 requirement for on-board recreation including reading material, sports and exercise equipment, and access to communications.
Recreational Stores X120. Marine Catering, Provisions and Ship Chandlers: Sub-stock of board games, books, and DVDs, MLC Title 3 welfare requirement.
Recreational Water Facility (RWF) X41. Cruise Ship Public Health and VSP/USPH: VSP umbrella term for pools, spas, splash pads, and similar features inspected under Item 40.
Recreational Water Illness (RWI) X41. Cruise Ship Public Health and VSP/USPH: Disease such as cryptosporidiosis or pseudomonas folliculitis transmitted through inadequately treated water.
Recruitment D4. Fisheries, aquaculture, blue economy and marine resources: Addition of juvenile fish to a stock.
Recruitment and Placement Service X21. STCW Certificates, Crewing and Seafarer Welfare: Manning agency operating under MLC Regulation 1.4.
Recruitment and Placement Services (MLC 1.4) X154. Maritime Welfare, Seafarer Charities, and MLC Rights: Standard requiring licensing, no-fee placement, and complaint mechanisms.
Recruitment Overfishing D4. Fisheries, aquaculture, blue economy and marine resources: Reducing spawning biomass to the point that future recruitment is impaired.
Rectifier X100. Marine Cathodic Protection and Anodes: The shipboard or shore-based device that converts AC supply into the controlled DC output of an ICCP system.
Rectify at next port X7. Flag State, Port State Control and Detention Vocabulary: PSC action code 16, deficiency to be cleared at the next port of call.
Rectify before departure X7. Flag State, Port State Control and Detention Vocabulary: PSC action code 18, deficiency to be cleared prior to sailing.
Rectify deficiency X7. Flag State, Port State Control and Detention Vocabulary: PSC action code 15, generic instruction to correct the finding.
Rectify within 14 days X7. Flag State, Port State Control and Detention Vocabulary: PSC action code 17, deficiency to be cleared within 14 days from inspection.
Recurrent Survey X43. Marine Surveying and Warranty Surveying: A general term for any inspection that recurs on a fixed cycle, typically associated with class or statutory regimes.
Recurring fault X59. Offshore Wind O&M, CTVs and SOVs: Repeated occurrence of the same fault type on multiple turbines, triggering fleet wide investigation.
Recyclability X125. Superyacht Industry, Builders and Brokers: Increasingly tracked under Hong Kong Convention and EU SRR for large yachts.
Recyclable Abrasive X88. Marine Surface Preparation and Coatings Application: Abrasive sufficiently resistant to fracture that it can be collected, cleaned, and reused, including steel grit, steel shot, garnet, and aluminum oxide.
Recyclean X63. Marine Auxiliary Machinery and Pumps: Brand of marine OWS units produced for bilge water treatment.
Recyclecon X50. Ship Recycling, Demolition and Hong Kong Convention: The BIMCO standard agreement for the sale of vessels for recycling, widely used in demolition transactions.
RECYCLECON 2012 X28. Ship Recycling and End-of-Life: BIMCO standard sale contract for green recycling, paired with IRRC requirements.
Recycler's Acceptance Letter X28. Ship Recycling and End-of-Life: Yard's confirmation that it will accept the ship for recycling.
Recycling Capacity Disclosure X28. Ship Recycling and End-of-Life: EU SRR requirement for facilities to declare maximum annual recycling output.
Recycling Facility Plan (RFP) X50. Ship Recycling, Demolition and Hong Kong Convention: A short-form term for the Ship Recycling Facility Plan.
Recycling Facility Plan (SRFP) B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Ship Recycling Facility Plan per HKC.
Recycling of Ships Act 2019 India X28. Ship Recycling and End-of-Life: Indian implementing legislation for the HKC.
Recycling of Ships Rules 2020, India X50. Ship Recycling, Demolition and Hong Kong Convention: The Indian subordinate legislation operationalizing the 2019 Act, including yard authorization procedures.
Recycling Plan SRP X28. Ship Recycling and End-of-Life: Vessel-specific plan prepared by the yard, reviewed by competent authority or RO.
Recycling Plot Number X28. Ship Recycling and End-of-Life: Unique identifier for each beaching plot at Alang and Sosiya.
Recycling Sale X161. Shipbroking, Freight Derivatives, and Baltic Indices: S&P transaction in which a vessel is sold for demolition, typically documented on DEMOLISHCON or Saleform demolition variants.
Recycling State X50. Ship Recycling, Demolition and Hong Kong Convention: The state in which the recycling facility is located, with HKC obligations for authorization and supervision.
Recycling Yard Plan (RYP) X118. Ship Recycling Yards, Beaches and Regulation: Facility-level plan describing layout, hot and cold work areas, and storage of hazardous materials.
Recyship Gemi X118. Ship Recycling Yards, Beaches and Regulation: Aliaga ship recycling facility historically listed on the EU List of Approved Ship Recycling Facilities.
RED X57. Ocean Energy Beyond Wind: Reverse electrodialysis, a salinity gradient power technology that uses ion exchange membranes to generate electricity from concentration differences.
Red Cross SAR X80. Maritime Search and Rescue Coordination: Volunteer SAR support provided by national Red Cross societies.
Red Duster F1. Maritime History: Nickname for the British Merchant Navy red ensign.
Red Ensign X39. Pre-1900 Maritime History: The flag of the British merchant marine, carried since the seventeenth century and confirmed by the Merchant Shipping Act 1854.
Red Ensign Group A7. Compliance, certification and enforcement: Group of UK and British dependent flags coordinating standards.
Red Ensign Group (REG) X35. Yacht and Superyacht Industry: Group of UK, Crown Dependency, and Overseas Territory registries flying the Red Ensign.
Red Ensign Yacht Code X125. Superyacht Industry, Builders and Brokers: REG-YC, the harmonized commercial yacht code superseding LY3 from 2019 within REG registries.
Red Flag (Sanctions) E1. Maritime security, geopolitics and risk: Indicator of evasion (AIS gap, STS pattern, opaque ownership).
Red Funnel X85. Ferries, Ro-Pax Operators and Routes: Solent ferry operator running Southampton to East Cowes vehicle and Southampton to West Cowes Red Jet passenger services.
RED II / RED III X34. Decarbonization, Alternative Fuels and Carbon Pricing: EU Renewable Energy Directives 2018/2001 and 2023/2413; define sustainability and GHG criteria for fuels counted under FuelEU.
Red Jet 6 X132. High-Speed Craft, Hydrofoils and Ferry Operators: 41 m aluminium catamaran built 2016 by Shemara Refit Works for Red Funnel, carries 275 passengers.
Red Jet 7 X132. High-Speed Craft, Hydrofoils and Ferry Operators: Sister to Red Jet 6, built 2018, the largest in the Red Jet fleet.
Red List Species (IUCN, Commercial) X87. Fishing Vessels and Fisheries Management: IUCN classification used to flag conservation concern for commercially fished species.
Red Sea X10. Marine Biology, Fisheries and Oceanography: Marginal sea of the Indian Ocean between Africa and Arabia.
Red Sea Gateway Terminal X138. Global Container Terminal Operators and Port Equipment: RSGT, Jeddah container terminal owned by Saudi PIF, COSCO Shipping Ports and Bahri.
Red Sea GNSS Interference X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents: Recurrent jamming reported by transiting vessels in 2023-2024 alongside Houthi missile and drone activity.
Red Sea Risk E1. Maritime security, geopolitics and risk: Houthi-driven elevated war/strikes exposure since late 2023.
Red Sea Risk Premium X127. Maritime Security, Anti-Piracy and PMSCs: War-risks surcharge ranging from 0.5 to 1.0 percent of hull value applied to transits since November 2023.
Red Sea Special Area (Annex I) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: An Annex I oil special area effective from 2 October 1983.
Red Team X25. Maritime Cybersecurity, OT and IT: Internal or external team that simulates adversary attacks.
Red tide X10. Marine Biology, Fisheries and Oceanography: Common term for harmful algal blooms that discolor the sea, often by dinoflagellates such as *Karenia brevis*.
Red Triangle X103. US Inland Waterway Towing and Barge: The shape of a red daymark used on US inland waterways to mark the right descending side of the channel.
Redbubble (marine acoustic) X57. Ocean Energy Beyond Wind: Generic term for acoustic noise mitigation during pile driving at offshore renewable sites.
Redelivery X17. Chartering, Shipbroking and Freight Trading: Return of the vessel to the owner at the end of a time or bareboat charter.
Redelivery Notice X17. Chartering, Shipbroking and Freight Trading: Sequential notices to the owner forecasting redelivery.
Redelivery Survey X60. Marine Salvage and Wreck Removal: Final survey of salvage equipment after demobilization.
Redfern Schedule X152. Maritime Arbitration and Dispute Resolution: Tabular document production tool developed in international arbitration practice, listing requests, opposing comments, and tribunal rulings in four columns.
Redfish X10. Marine Biology, Fisheries and Oceanography: Slow-growing rockfishes of the genus *Sebastes*.
Redningsselskapet X80. Maritime Search and Rescue Coordination: NSSR, Norwegian Society for Sea Rescue.
Redox potential X42. Offshore Wind Installation and Cable Lay: Geochemical parameter relevant to cathodic protection design.
Reduced Capacity Tank X75. IMDG Code, Classes, Packing and Segregation: Portable tank with capacity below 1000 liters fitted with additional requirements per IMDG.
Reduced Pressure Zone (RPZ) Assembly X41. Cruise Ship Public Health and VSP/USPH: High-hazard backflow preventer with two check valves and a relief port, tested annually.
Reduced Risk Ship Targeting X146. Port State Control Regimes, MoUs, and Inspection Systems: The selection logic that increases the inspection interval for ships meeting low risk profile criteria.
Reduced Tide D2. Hydrography, tides, waves, bathymetry and marine geology: Tide adjusted for atmospheric and meteorological effects.
Reductant X69. EGCS Scrubbers, SCR and Marine Air Emissions: General term for the urea or ammonia agent dosed into an SCR system.
Reductant Dosing Unit X69. EGCS Scrubbers, SCR and Marine Air Emissions: Skid metering urea solution to SCR injection lances.
Reductant Storage Tank X69. EGCS Scrubbers, SCR and Marine Air Emissions: Insulated and heated tank carrying AUS40 or equivalent urea solution.
Reduction Factor A3. Marine environmental legislation: MARPOL and its annexes: CII Z factor reducing annually under MARPOL Annex VI.
Reduction Factor X X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Percentage in the Required EEDI formula representing the regulatory cut from the Reference Line.
Reduction Factor Z X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Percentage in the Required CII formula starting at 5 percent in 2023 and rising annually to 11 percent in 2026.
Reduction gear X19. Engine Room Watchkeeping and UMS Operations: Gearbox lowering engine speed to propeller speed on medium speed installations.
Reduction gear (polar) X27. Polar Code, Ice Navigation and Polar Operations: Must operate at PST for cold-soaked starts.
Reduction gearbox B2. Marine Engineering: Single or twin-input reduction unit between engine and shaft.
Redundant Control Link X109. Maritime Autonomous Surface Ships and MASS Code: A second independent ship to shore link that allows continued remote operation after primary link failure.
Redundant Steering X133. Polar Research Vessels and Polar Code Regimes: Polar Code requires steering arrangements operable after single failure.
Reed Smith X51. Maritime Arbitration, Law and BIMCO Clauses: An international law firm with a substantial transportation, shipping, and trade practice.
Reed Smith LLP X157. Marine Loss Adjusters, GA Practice, and Casualty Firms: Global law firm whose shipping practice was strengthened by 2007 merger with Richards Butler in London.
Reeder, John QC X99. Marine Salvage Awards and SCOPIC: Member of the Lloyd's Salvage Arbitrators panel.
Reef X3. Ship Handling, Seamanship and Deck Vocabulary: Reduce sail area by gathering and tying part of the sail.
Reef Fishery D4. Fisheries, aquaculture, blue economy and marine resources: Fishery targeting coral reef species.
Reef Knot F5. The Reference Layer: Glossary, Units, Signals and Information Sources: Square knot for reefing or tying small lines.
Reef Pilot X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Coastal pilot licensed under Australian Marine Order 54 for transits through the Great Barrier Reef.
Reef Points X39. Pre-1900 Maritime History: Short lines on a sail used to gather and tie a reef when shortening sail.
Reef-Forming Coral X10. Marine Biology, Fisheries and Oceanography: Hermatypic scleractinian corals depositing CaCO3 framework.
Reef-Friendly Sunscreen D3. Marine environmental science, pollution and conservation: Sunscreens excluding oxybenzone and similar compounds.
Reefcube X57. Ocean Energy Beyond Wind: Artificial reef structure occasionally co-located with marine renewable installations for biodiversity enhancement.
Reefer X6. Container, Intermodal and Trade Codes: Refrigerated container, ISO group R, common codes 22R1, 42R1, 45R1.
Reefer (no entry) X16. Nautical Science, Navigation and COLREGs: Cargo term, not navigation.
Reefer Bay X136. Reefer Vessels and Cool Chain Operators: Section of a container vessel with reefer plug capacity, with bay-row-tier coordinates identifying each plug.
Reefer broker X71. Shipbrokers and Brokerage Firms: Broker active in refrigerated cargo and reefer container chartering.
Reefer Cargo X53. Marine Insurance, P&I and Hull Clauses: Refrigerated cargo, often subject to specialized clauses addressing breakdown of refrigerating machinery.
Reefer Cargo Clause X51. Maritime Arbitration, Law and BIMCO Clauses: A bill of lading provision regulating carriage of refrigerated cargo, including temperature settings and pre-cooling.
Reefer Carrier (Fish) X87. Fishing Vessels and Fisheries Management: Refrigerated transport vessel carrying frozen fish from fishing grounds to shore, distinct from container reefers.
Reefer Compressor X63. Marine Auxiliary Machinery and Pumps: General term for compressors serving refrigerated cargo or provision spaces.
Reefer container C3. Logistics, freight forwarding and multimodal trade: Refrigerated container with integral plant.
Reefer Container (Stores) X120. Marine Catering, Provisions and Ship Chandlers: 20 ft or 40 ft refrigerated container used by chandlers for inter-port consolidation.
Reefer Container Compressor X63. Marine Auxiliary Machinery and Pumps: Refrigeration compressor used in containerized cargo refrigeration units.
Reefer Container Outlet X67. Marine Electrical Systems and Shore Power: Refrigerated container receptacle typically rated 32 A at 440 V, three-phase.
Reefer Container Survey X5. Marine Surveying and Inspection: PTI and condition inspection of refrigerated containers.
Reefer Containerization X136. Reefer Vessels and Cool Chain Operators: Long-term shift from conventional reefer ships to reefer container slots on container vessels, fundamentally reshaping the cool chain by the 2010s.
Reefer Demurrage X136. Reefer Vessels and Cool Chain Operators: Per diem charge applied to reefer containers held beyond free time, higher than dry due to energy and capacity opportunity cost.
Reefer Engineer F3. Seafaring Life, Education, Professions and Institutions: Specialist in refrigerated cargo systems.
Reefer Express X70. Reefer Containers and Cold Chain Shipping: Historical name associated with Reefer Shipping Line in the European trades, no longer active under that branding.
Reefer freight C1. Commercial shipping, chartering, economics and finance: Freight for refrigerated cargo or containers.
Reefer Live X70. Reefer Containers and Cold Chain Shipping: CMA CGM digital service for real-time reefer container monitoring across the carrier's network.
Reefer Mechanic X136. Reefer Vessels and Cool Chain Operators: Specialist port worker performing reefer plug-in, monitoring, alarm response, and PTI tasks at container terminals.
Reefer monitoring C3. Logistics, freight forwarding and multimodal trade: IoT monitoring of reefer set points and alarms.
Reefer Monitoring System X136. Reefer Vessels and Cool Chain Operators: Computer system monitoring reefer container set points, alarms, and temperature data, often integrated with TOS.
Reefer plant X19. Engine Room Watchkeeping and UMS Operations: Refrigeration installation for cargo, provisions, or containers.
Reefer Plant (Galley) X120. Marine Catering, Provisions and Ship Chandlers: Onboard ammonia or R404A system serving the provisions chiller and freezer.
Reefer Plug X1. Cargo Science, Commodities and Cargo Care: Onboard or terminal 440 V socket for reefer power.
Reefer Plug Allocation X86. Port Agency, Husbandry and Disbursement: Allocation of reefer plugs at the terminal for refrigerated containers.
Reefer plug bank X175. Port Engineering, Dredging, Breakwaters, and Quays: Group of refrigerated container power outlets installed on the landside apron of a container quay.
Reefer Plug Capacity X136. Reefer Vessels and Cool Chain Operators: Number of reefer plugs available on a vessel or terminal, a key competitive parameter for cool chain operators.
Reefer plug platform X76. Stevedoring, Lashing and Cargo Securing: Walkway and lashing platform giving access to refrigerated container plugs and lashings.
Reefer Plug Safety Distance X9. Cargo Securing, Lashing and Stability Vocabulary: Minimum clearance for reefer plug access and ventilation, typically 100 to 150 mm per OEM specification.
Reefer Pool X136. Reefer Vessels and Cool Chain Operators: Group of reefer ships placed under common management for charter, exemplified by Seatrade's Star Reefers pool.
Reefer pre-trip inspection C2. Ship operations, crewing and technical management: PTI before each reefer container voyage.
Reefer Pre-Trip Inspection (PTI) X155. Marine Surveying Practice and Cargo Inspection: A standardized functional test of a reefer unit before stuffing, the records of which the surveyor reviews in a damage claim.
Reefer rack C4. Ports, terminals and coastal/marine civil engineering: Stack with power supply for reefer containers.
Reefer Reach Stacker X94. Port Machinery and Quay Equipment Makers: Reach stacker fitted with a chiller plug attachment for short-distance reefer container moves.
Reefer Setpoint X1. Cargo Science, Commodities and Cargo Care: Target air-supply temperature.
Reefer ship B5. Ship Types and Individual Vessels: Refrigerated cargo ship for fruit/meat.
Reefer slot X70. Reefer Containers and Cold Chain Shipping: Container slot on board a vessel equipped with electrical supply and monitoring connections for reefer containers.
Reefer Socket X9. Cargo Securing, Lashing and Stability Vocabulary: Power outlet for reefer container.
Reefer Stack X9. Cargo Securing, Lashing and Stability Vocabulary: Stack of refrigerated containers requiring electrical service.
Reefer Survey X155. Marine Surveying Practice and Cargo Inspection: An inspection of a reefer ship's cargo holds, refrigeration plant, brine systems, and air circulation.
Reefer Telematics E3. Technology, digitalization and smart shipping: Remote monitoring of refrigerated containers.
Reefer terminal X15. Ports, Terminals and Stevedoring: terminal with extensive reefer rack capacity.
Reefer TEU Productivity X136. Reefer Vessels and Cool Chain Operators: Trade analytics metric for reefer container utilization, used in carrier financial reports.
Reefer Trade F1. Maritime History: Refrigerated meat and fruit trade from the late nineteenth century.
Reefer Vessel E4. Cruise, offshore energy and auxiliary/specialised fleets: Refrigerated cargo ship.
ReeferConnect X70. Reefer Containers and Cold Chain Shipping: ORBCOMM-branded reefer telematics service providing remote monitoring and command of reefer containers.
Reefing B3. Nautical Science: Reducing sail area in heavy weather.
Reefing earing X3. Ship Handling, Seamanship and Deck Vocabulary: Line at the reef cringle for hauling the reef tight.
Reefkeeping X123. Offshore Wind Installation Vessels and Operators: Environmental monitoring discipline for offshore wind foundations under OSPAR Recommendation 2003.
REEFLEX X26. Reefer Containers and Cold Chain Logistics: CMA CGM reefer telematics platform.
Reefs (Geomorphic) D2. Hydrography, tides, waves, bathymetry and marine geology: Wave-resistant constructional features built mostly by corals.
Reel-lay X14. Offshore Oil and Gas Marine Operations: Pipeline installation from a vertical reel onto seabed.
Reeve, Genoa F4. Recreational Boating, Yachting and Sport: Pass a line through a block.
Reference (LMAA) X152. Maritime Arbitration and Dispute Resolution: Common LMAA term for an individual arbitration matter.
Reference Cell X100. Marine Cathodic Protection and Anodes: Another term for a reference electrode used in CP measurements.
Reference Class X29. Ship Sale and Purchase, Management Contracts and Valuation: Class to which vessel is sold and to be maintained until delivery.
Reference Conditions X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: ISO 3046 ambient temperature, pressure, and humidity at which engine performance is declared, typically 25 deg C and 1.0 bar.
Reference Density X115. Marine Bunker and Cargo Surveying: Density value at 15 degrees C used as the basis for petroleum measurement and custody transfer.
Reference electrode X45. Marine Paints, Coatings and Antifouling: Electrode of known potential, such as silver-silver chloride, used to monitor cathodic protection.
Reference Electrode Array X100. Marine Cathodic Protection and Anodes: A set of permanent reference electrodes distributed across a hull or structure for continuous CP monitoring.
Reference for Determination X114. Maritime Arbitration and Shipping Law Firms: Process by which an English court refers an issue to an LMAA tribunal.
Reference Frame ITRF D5. Coastal processes, sea-level, cryosphere and ocean observation science: International Terrestrial Reference Frame used for geodesy.
Reference Line X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Curve of carbon intensity values defined per ship type, used to derive required EEDI and required CII.
Reference line (CII) X34. Decarbonization, Alternative Fuels and Carbon Pricing: Curve representing 2019 fleet-average AER values used to set required CII.
Reference Line (EEDI) D6. Decarbonization, emissions and alternative fuels: Reference EEDI value against which design is compared.
Reference Period X146. Port State Control Regimes, MoUs, and Inspection Systems: The three-year window used for calculating performance lists.
Reference Point X87. Fishing Vessels and Fisheries Management: Benchmark biomass or fishing mortality used in stock status determination.
Reference Receiver (GNSS) X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Static GNSS receiver providing differential corrections to a roving survey antenna, supporting RTK and PPK methods.
Reference Sample X115. Marine Bunker and Cargo Surveying: Sealed sample retained by surveyor, supplier, or receiver against which subsequent disputes are arbitrated.
Reference seabed conditions X57. Ocean Energy Beyond Wind: Baseline environmental dataset against which marine renewable and CCS impacts are evaluated.
Reference Site D3. Marine environmental science, pollution and conservation: Relatively undisturbed location used for environmental comparison.
Reference Temperature X20. LNG Operations and Custody Transfer: Standard temperature for LNG volume reporting, typically minus 161.5 degrees C per GIIGNL.
Reference Vessel X44. Shipping Indices, FFAs and Freight Markets: Standard ship design with defined deadweight, speed, and consumption used to calibrate Baltic route TCE calculations.
Reference Year D4. Fisheries, aquaculture, blue economy and marine resources: Baseline period used in management calculations.
References Incorporated Clause X51. Maritime Arbitration, Law and BIMCO Clauses: A provision incorporating named conventions, rules, or codes by reference into the contract.
Refinance Risk X49. Ship Finance, Leasing and Maritime Capital Markets: Risk that maturing debt cannot be refinanced on acceptable terms.
Refined Product Trade X44. Shipping Indices, FFAs and Freight Markets: Clean petroleum movements such as gasoline, diesel, and jet fuel that underpin the BCTI and TC route family.
Refined Products Barge X103. US Inland Waterway Towing and Barge: An inland tank barge carrying gasoline, diesel, jet fuel or other distillates.
Refinery 29 Rotterdam X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Shell Pernis complex feeding direct pipeline bunker product into the Rotterdam barge market.
Refinery blendstock X149. Marine Fuels, Bunkering, and Alternative Fuels: An intermediate refinery stream (slurry oil, VGO, cycle oil) combined to make VLSFO or HSFO.
Refinery Column X104. Project Cargo Forwarders and Heavy Transport: Tall distillation tower transported as a single project unit, often above 100 meters long.
Refinery Off-Spec Investigation X115. Marine Bunker and Cargo Surveying: Forensic study tracing off-specification fuel deliveries back to specific refinery streams or blending operations.
Refinery Vessel Hydrocracker X104. Project Cargo Forwarders and Heavy Transport: High pressure refinery reactor, frequently exceeding 1,000 tonnes per unit.
Refinitiv X74. AIS Data, Vessel Tracking and Maritime Intelligence: Financial data business now operating as LSEG Data and Analytics.
Refinitiv Eikon X101. Vessel Brokerage Software and Chartering Platforms: Market data and analytics terminal from Refinitiv, now part of the London Stock Exchange Group, with tanker and freight analytics modules.
Refinitiv World-Check X29. Ship Sale and Purchase, Management Contracts and Valuation: KYC and sanctions screening database, part of LSEG.
Refit X24. Cruise, Passenger Ship and Ferry Operations: Drydock or wet-dock period for cruise ship overhaul and revenue-area upgrades.
Refit period X156. Superyacht Industry, Builders, and Yacht Charter Market: Scheduled docking of a yacht at a refit yard such as MB92 or Pendennis to perform statutory surveys, paint, and upgrades, typically every five years aligned to class.
Refit Survey X43. Marine Surveying and Warranty Surveying: An attendance during major refit work covering specification, work in progress, and final acceptance.
Refit yard X35. Yacht and Superyacht Industry: Shipyard specializing in refurbishment, retrofit, and class renewals for existing yachts.
Reflag at Place of Safety X60. Marine Salvage and Wreck Removal: Administrative change of registration following arrival at port of refuge, sometimes required by owner restructuring.
Reflag Cable Vessel X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Vessel reflagged to operate in cabotage-restricted jurisdictions for cable repair.
Reflagging E1. Maritime security, geopolitics and risk: Change of flag, often to obscure identity or alter regulatory exposure.
Reflagging for Final Voyage X28. Ship Recycling and End-of-Life: Owner's transfer of registry to a flag accepting end-of-life vessels.
Reflagging for Recycling X50. Ship Recycling, Demolition and Hong Kong Convention: The transfer of a vessel to a flag of convenience before delivery to a recycling yard, increasingly scrutinized by NGOs and competent authorities.
Reflection Attack X48. Maritime Cybersecurity: Denial of service technique that abuses third party services to amplify traffic toward a victim.
Reflective topcoat X45. Marine Paints, Coatings and Antifouling: Light-colored coating used on cargo tanks of LPG and other vessels to limit solar heat gain.
Reflector X68. Maritime Satcom and Telecommunications: Curved surface of a parabolic antenna that focuses signals onto the feed.
Refloat X167. Major Salvage Companies, Wreck Removals, and Equipment: Salvage operation phase of restoring buoyancy and removing a casualty from its grounded position.
Refloating X13. Marine Salvage and Wreck Removal: Returning a stranded vessel to free-floating condition by lightening or pulling.
Refloating Analysis X54. Naval Architecture Software and IACS Rules: Damaged ship rescue analysis performed in NAPA and GHS for salvage operations.
Refloating Plan X141. Marine Salvage Industry and Wreck Removal Contractors: Approved engineering document governing the steps to lift a grounded hull.
Refloating Survey X155. Marine Surveying Practice and Cargo Inspection: A casualty inspection performed after a grounded vessel is refloated, addressing bottom damage and machinery soundness.
Reflux Valve X63. Marine Auxiliary Machinery and Pumps: Common term for a check valve preventing reverse flow.
Reformate X47. Marine Fuel Quality and ISO 8217: High-octane refinery stream not normally found in marine fuel except in trace blending excursions.
Reformate Content X115. Marine Bunker and Cargo Surveying: Aromatic blendstock occasionally found in residual fuel, monitored for stability and CCAI implications.
Reformer X34. Decarbonization, Alternative Fuels and Carbon Pricing: Onboard unit producing hydrogen from methanol, LNG, or ammonia for fuel cells.
Refraction D2. Hydrography, tides, waves, bathymetry and marine geology: Bending of waves as they enter shallower water.
Refraction (atmospheric) X16. Nautical Science, Navigation and COLREGs: Bending of light through the atmosphere.
Refraction (electromagnetic) B3. Nautical Science: Bending of radar/visual rays.
Refraction (waves) X10. Marine Biology, Fisheries and Oceanography: Bending of waves as they enter shallower water, aligning crests with depth contours.
Refraction Editor X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Post-processing tool that adjusts beam paths using improved sound velocity profiles to correct refraction artifacts in multibeam data.
Refractive index X61. Marine Lubricants and Cylinder Oils: Optical property occasionally used to screen for gross contamination in used oils.
Refractometer X19. Engine Room Watchkeeping and UMS Operations: Instrument measuring boiler water condensate quality from chlorides.
Refresher and Updating Training X160. Maritime Academies, Universities, and STCW Certification: STCW Manila Amendments mandated five-yearly refresher of PSCRB, FRB, AFF, and PST endorsements.
Refresher antifouling X45. Marine Paints, Coatings and Antifouling: Lightly applied antifouling between full drydock cycles to restore biocide release.
Refresher coat X165. Marine Coatings, Antifouling, and Hull Husbandry: A maintenance application of antifouling renewing biocide reservoir without full prior coat removal.
Refresher training X21. STCW Certificates, Crewing and Seafarer Welfare: STCW Regulation I/11 update training required at intervals of not more than 5 years for PSCRB, FRB, AFF, and MFA.
Refresher training (STCW VI/4) X36. Shipboard Medical, Telemedicine and Seafarer Health: 5-yearly retraining for medical first aid and medical care competencies.
Refrigerant X6. Container, Intermodal and Trade Codes: Working fluid in reefer machinery, typically R134a or R513A.
Refrigerant (polar) X27. Polar Code, Ice Navigation and Polar Operations: Refrigeration systems must function during outdoor cold soak.
Refrigerant charge X26. Reefer Containers and Cold Chain Logistics: Mass of refrigerant in reefer circuit, typical 3 to 6 kg depending on unit.
Refrigerant CO2 Equivalent D6. Decarbonization, emissions and alternative fuels: GHG impact of refrigerant leaks.
Refrigerant leak test X26. Reefer Containers and Cold Chain Logistics: Pre-trip electronic or dye-based leak survey.
Refrigerant Recovery Certificate X50. Ship Recycling, Demolition and Hong Kong Convention: The yard or shore contractor document confirming the proper recovery of refrigerants under the Montreal Protocol.
Refrigerated Ammonia Carrier X140. Ammonia as Marine Fuel and Hydrogen Shipping: Fully refrigerated Type A or B tanks at minus 33 deg C, capacity from 22,000 to 93,000 m3.
Refrigerated Cargo X1. Cargo Science, Commodities and Cargo Care: Goods carried below ambient under temperature control.
Refrigerated Cargo Distinction X120. Marine Catering, Provisions and Ship Chandlers: Stores reefer is separate from cargo reefer holds and is not under bill of lading carriage.
Refrigerated Cargo Survey X5. Marine Surveying and Inspection: Cold treatment and temperature verification during loading and voyage.
Refrigerated container leasing C3. Logistics, freight forwarding and multimodal trade: Leasing per IICL guidelines.
Refrigerated Liquefied Gas X75. IMDG Code, Classes, Packing and Segregation: Liquefied gas at very low temperature, Class 2 with portable tank instruction T75.
Refrigerated Liquefied Gases X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: Class 2.2 or 2.3 deeply refrigerated cryogens such as LNG (2.1), LIN (2.2), or LOX (2.2 + 5.1).
Refrigerated Sea Water (RSW) X87. Fishing Vessels and Fisheries Management: Chilled seawater used to preserve pelagic catch in dedicated tanks on purse seiners and pelagic trawlers.
Refrigerated terminal X15. Ports, Terminals and Stevedoring: facility for chilled and frozen perishables.
Refrigeration log X19. Engine Room Watchkeeping and UMS Operations: Daily record of compressor suction, discharge, oil pressure, and condenser conditions.
Refrigeration plant B2. Marine Engineering: HFC/HFO/CO2 refrigeration for provisions, reefer.
Refrigeration Plant Survey X5. Marine Surveying and Inspection: Class inspection of refrigerating machinery and insulation.
Refrigeration retrofit B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Conversion from R22 to R134a/R744.
Refuel Hydrant X31. Helicopter Operations on Ships: Fixed below-deck refueling point with retractable hose.
Refuel Manifold X31. Helicopter Operations on Ships: Pressurized fuel distribution unit connecting hose to dispenser nozzle.
Refuge Area X127. Maritime Security, Anti-Piracy and PMSCs: See Citadel.
Refugees and Migrants at Sea (UNHCR-IMO) E1. Maritime security, geopolitics and risk: Joint guidance on rescue and disembarkation.
Refund commission X71. Shipbrokers and Brokerage Firms: Address commission returned to the charterer through the broker.
Refund guarantee C1. Commercial shipping, chartering, economics and finance: Bank guarantee securing buyer's pre-delivery instalments.
Refund Guarantee (RG) X29. Ship Sale and Purchase, Management Contracts and Valuation: Bank guarantee securing yard repayment to buyer in newbuilding default.
Refurbished Container X83. ISO Container Manufacturing and Leasing: Used container restored to a marketable grade through cosmetic and structural repairs.
Refusal of access X7. Flag State, Port State Control and Detention Vocabulary: Banning order under Paris MoU or Tokyo MoU.
Refusal of Access Banning Order X146. Port State Control Regimes, MoUs, and Inspection Systems: The written order communicating a refusal-of-access decision to the master, owner, flag, and class.
Refusal of enforcement X152. Maritime Arbitration and Dispute Resolution: Court decision declining to enforce a foreign award on Article V grounds; recorded in the UNCITRAL CLOUT and ICCA Yearbook.
Refusal to sail X32. Marine Pilotage and Pilot Operations: Pilot's prerogative to decline pilotage if the ship is unseaworthy for the planned voyage.
Reg 1 (Annex I Definitions) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The definitions regulation including oil, oily mixture, oil tanker, segregated ballast, clean ballast, wing tank, centre tank, and combination carrier.
Reg 10 (Annex I Special Area Methods) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The regulation on methods for the prevention of oil pollution from ships while operating in special areas.
Reg 12 (Annex I Tanks for Oil Residues, Sludge) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The regulation requiring tanks of adequate capacity for oil residues sludge, with a standard pumping arrangement.
Reg 12A (Annex I Oil Fuel Tank Protection) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The regulation introduced by MEPC.141(54) requiring protection of oil fuel tanks on ships with an aggregate oil fuel capacity of 600 cubic metres and above contracted on or after 1 August 2007.
Reg 13 (Annex I SBT, CBT, COW) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The regulation establishing segregated ballast tanks, dedicated clean ballast tanks, and crude oil washing requirements for crude oil tankers and product carriers.
Reg 14 (Annex I ODMCS) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The regulation defining requirements for the oil discharge monitoring and control system on oil tankers.
Reg 15 (Annex I Discharge Controls) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The regulation on the control of discharge of oil including the 15 ppm machinery space limit and the cargo area discharge criteria.
Reg 16 (Annex I SOPEP) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The regulation requiring a Shipboard Oil Pollution Emergency Plan on every oil tanker of 150 GT and above and every ship other than an oil tanker of 400 GT and above.
Reg 17 (Annex I Oil Record Book) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The regulation establishing the Oil Record Book Part I for machinery space operations on ships of 400 GT and above.
Reg 18 (Annex I SBT Arrangements) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The regulation on pumping, piping, and discharge arrangements associated with segregated ballast.
Reg 19 (Annex I Double Hull and Bottom) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The regulation requiring double hull and double bottom construction in oil tankers above specified deadweight thresholds.