Glossary

Maritime glossary, terms beginning with M (page 6)

All maritime glossary terms that begin with the letter M, drawn from every subject section. 2781 entries.

Showing 250 of 2781 terms (page 6 of 12).

Med Marine X30. Tug Operations and Harbour Towage: Turkish shipyard and tug operator based in Istanbul.
Med Mooring F4. Recreational Boating, Yachting and Sport: Stern-to anchoring style common in Mediterranean marinas.
MED MoU X146. Port State Control Regimes, MoUs, and Inspection Systems: The Mediterranean Memorandum of Understanding on Port State Control, signed in Malta on 11 July 1997.
MED MoU Information System (MEDMIS) X146. Port State Control Regimes, MoUs, and Inspection Systems: The information system used by Mediterranean MoU members.
MED-AIS X74. AIS Data, Vessel Tracking and Maritime Intelligence: Mediterranean regional AIS data exchange among coastal states.
Med-arb X152. Maritime Arbitration and Dispute Resolution: Hybrid process where the same neutral acts first as mediator and, failing settlement, as arbitrator; more common in CMAC and CIETAC practice than in LMAA.
MED-Wheelmark Galley Equipment X120. Marine Catering, Provisions and Ship Chandlers: EU Marine Equipment Directive mark required on fitted galley equipment forming part of vessel's safety equipment.
MedAire X36. Shipboard Medical, Telemedicine and Seafarer Health: Phoenix, Arizona-based provider of maritime telemedicine through MedLink Global Response Center.
MEDESS-4MS X126. Marine Oil Spill Response and OPRC Regimes: Mediterranean Decision Support System for Marine Safety oil drift forecasting.
Medetomidine X18. Ballast Water, Biofouling and Antifouling: Antifouling active substance acting as octopamine receptor agonist on barnacle larvae, used in some Selektope formulations.
MEDEVAC X36. Shipboard Medical, Telemedicine and Seafarer Health: Medical evacuation by ship, helicopter, or fixed-wing aircraft.
MEDEVAC Quotation X86. Port Agency, Husbandry and Disbursement: Cost estimate for medical evacuation services arranged by the agent.
Median Floe Size D5. Coastal processes, sea-level, cryosphere and ocean observation science: Statistical measure of sea ice floe sizes.
Mediation X152. Maritime Arbitration and Dispute Resolution: Voluntary non-binding facilitated settlement process, increasingly combined with arbitration through tiered clauses including the BIMCO Mediation Clause.
Mediation Clause X51. Maritime Arbitration, Law and BIMCO Clauses: A multi-tier dispute resolution provision requiring mediation as a step before arbitration or litigation.
Medical Care X21. STCW Certificates, Crewing and Seafarer Welfare: STCW Regulation VI/4 paragraph 2 course for officers in charge of medical care onboard.
Medical Care (STCW VI/4-2) X36. Shipboard Medical, Telemedicine and Seafarer Health: Higher-level STCW competency for officers in charge via Model Course 1.15.
Medical Care On Board (MLC Regulation 4.1) X102. Seafarer Welfare and Maritime Charities: MLC 2006 requirements on access to medical care, on-board medical chest, and qualified personnel.
Medical Care on Board Ship X36. Shipboard Medical, Telemedicine and Seafarer Health: Title of MLC 2006 Regulation 4.1 covering health protection and treatment.
Medical Care on Board Ship Course X55. Marine Simulators, Training and Maritime Academies: STCW Regulation VI/4 course for officers designated to take charge of medical care, aligned with IMO Model Course 1.15.
Medical certificate X32. Marine Pilotage and Pilot Operations: Periodic fitness certificate required of active pilots.
Medical Certificate STCW I/9 X36. Shipboard Medical, Telemedicine and Seafarer Health: Mandatory pre-employment and periodic fitness certificate per STCW Regulation I/9.
Medical chest X36. Shipboard Medical, Telemedicine and Seafarer Health: Lockable cabinet containing pharmaceuticals and equipment per flag-state and IMGS quantification.
Medical chest inspection X36. Shipboard Medical, Telemedicine and Seafarer Health: Annual inspection by flag-state-recognized pharmacist or doctor.
Medical Evacuation Arrangement X86. Port Agency, Husbandry and Disbursement: Arrangement of medical evacuation by the agent.
Medical Examination Certificate X102. Seafarer Welfare and Maritime Charities: STCW Regulation I/9 medical fitness certificate required for service at sea.
Medical First Aid X21. STCW Certificates, Crewing and Seafarer Welfare: STCW Regulation VI/4 paragraph 1 short course.
Medical First Aid (STCW VI/4-1) X36. Shipboard Medical, Telemedicine and Seafarer Health: STCW competency at first-aid level via Model Course 1.14.
Medical First Aid on Board Ship Course X55. Marine Simulators, Training and Maritime Academies: STCW Regulation VI/4 course aligned with IMO Model Course 1.14.
Medical Fitness Certificate X21. STCW Certificates, Crewing and Seafarer Welfare: STCW I/9 document, valid up to two years for seafarers and one year for those under 18.
Medical fitness examination X36. Shipboard Medical, Telemedicine and Seafarer Health: Pre-employment and periodic examination per ILO/IMO Guidelines on Medical Examinations of Seafarers, 2013 revision.
Medical Lock X82. Saturation Diving and Offshore Diving Operations: Small lock used to pass medical supplies into pressurized chambers.
Medical Log X41. Cruise Ship Public Health and VSP/USPH: General clinical record at the medical center supplementing the dedicated AGE log.
Medical Log Book X36. Shipboard Medical, Telemedicine and Seafarer Health: Record of every medical event, treatment, and TMAS consultation on board.
MEDICO X80. Maritime Search and Rescue Coordination: Telemedical advice service for vessels at sea.
MEDICO call X36. Shipboard Medical, Telemedicine and Seafarer Health: VHF or Inmarsat call requesting medical advice; addressed to coast radio station or TMAS.
MEDICOM Madrid X36. Shipboard Medical, Telemedicine and Seafarer Health: Spanish TMAS service operated by Instituto Social de la Marina.
Medina Panel X87. Fishing Vessels and Fisheries Management: Mesh section in tuna purse seine nets that facilitates dolphin release during backdown.
Mediterranean Action Plan (MAP) D3. Marine environmental science, pollution and conservation: UNEP regional plan for Mediterranean protection.
Mediterranean Bluefin Tuna Farm X87. Fishing Vessels and Fisheries Management: Tuna farming operation receiving live bluefin from purse seine, regulated under ICCAT Recommendation on bluefin farming.
Mediterranean Bunker Range X72. Bunkering Hubs and Bunker Suppliers: Geographic supply region covering Algeciras, Gibraltar, Ceuta, Augusta, Piraeus, Istanbul, Malta, and Barcelona.
Mediterranean Cable Maintenance Agreement (MECMA) X122. Submarine Cable Laying, Repair Vessels and Operators: Regional MMA covering the Mediterranean and Black Sea with vessels including Sovereign and Raymond Croze previously contracted.
Mediterranean Cluster X113. Drydock and Ship Repair Yards: Concentration of repair yards across Spain, France, Italy, Greece, and Turkey serving Mediterranean and short-sea traffic.
Mediterranean Cruising F4. Recreational Boating, Yachting and Sport: Popular leisure sailing area.
Mediterranean ECA X72. Bunkering Hubs and Bunker Suppliers: Emission control area for sulfur covering the Mediterranean Sea entering force 1 May 2025 limiting bunker sulfur to 0.10 percent.
Mediterranean Galley System F1. Maritime History: Long-running oared warship culture of Venice, Genoa, Spain, and the Ottoman Empire.
Mediterranean GNSS Interference X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents: Recurrent jamming reported by shipping near Libya, Cyprus, and the Levant.
Mediterranean Hub Agency X86. Port Agency, Husbandry and Disbursement: Agency presence at Mediterranean hubs such as Algeciras, Piraeus, and Gioia Tauro.
Mediterranean Maritime Archaeology F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Long history including Ulu Burun, Kyrenia, and Madrague de Giens.
Mediterranean moor X3. Ship Handling, Seamanship and Deck Vocabulary: Mooring stern-to with both anchors out forward.
Mediterranean MoU A7. Compliance, certification and enforcement: PSC regime for the Mediterranean.
Mediterranean OTEC X57. Ocean Energy Beyond Wind: Conceptual OTEC siting studies in eastern Mediterranean and adjacent tropical seas.
Mediterranean Outflow Water D1. Physical and chemical oceanography and marine meteorology: Saline water exiting the Mediterranean through the Strait of Gibraltar.
Mediterranean Pass X39. Pre-1900 Maritime History: A document issued by the Royal Navy from 1662 to protect British merchant ships from Barbary corsairs.
Mediterranean Salvage Operators X60. Marine Salvage and Wreck Removal: Regional cluster of salvors based in Greece, Italy, Malta, and Turkey.
Mediterranean Sea X10. Marine Biology, Fisheries and Oceanography: Marginal sea between Europe, Africa, and Asia.
Mediterranean Sea Emission Control Area (SOx) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The Reg 14.3 SOx ECA in the Mediterranean Sea, in effect from 1 May 2025.
Mediterranean Sea Special Area (Annex I) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: An Annex I oil special area in force from 2 October 1983.
Mediterranean Sea Special Area (Annex V) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: An Annex V garbage special area, effective from 1 May 2009.
Mediterranean season X35. Yacht and Superyacht Industry: Summer charter period running roughly from May to September from the Balearics to the Aegean.
Mediterranean SECA X69. EGCS Scrubbers, SCR and Marine Air Emissions: Sulfur Emission Control Area covering the Mediterranean Sea, in force from 1 May 2025.
Mediterranean Shipping Company X15. Ports, Terminals and Stevedoring: MSC, owns terminals via Terminal Investment Limited.
Mediterranean Shipping Company (MSC) X118. Ship Recycling Yards, Beaches and Regulation: Container line that has used HKC-compliant Alang plots for selected disposals; verify with cash-buyer announcements.
Mediterranean Shipping Forum X119. Maritime Conferences, Trade Shows and Awards: Annual regional event held in Naples or Genoa.
Mediterranean Shipping Towage (MST) X30. Tug Operations and Harbour Towage: Towage group operating Mediterranean harbor services.
Mediterranean Shipping Tugs X137. Harbour Tugs, Towage Operators and Tug Builders: Generic for harbour towage at large Med transshipment ports like Gioia Tauro and Piraeus.
Mediterranean shore approach X42. Offshore Wind Installation and Cable Lay: Specific landfall planning context for southern European projects.
Mediterranean SOx ECA X149. Marine Fuels, Bunkering, and Alternative Fuels: An IMO-designated SOx ECA in force from 1 May 2025 applying the 0.10% m/m sulfur cap across the Mediterranean Sea.
Mediterranean Submarine Cable (MedNautilus) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Regional submarine cable network connecting Mediterranean countries with rings centered on Israel, Greece, and Italy.
Mediterranean Swordfish X87. Fishing Vessels and Fisheries Management: Xiphias gladius stock managed by ICCAT under Recommendation 16-05 and subsequent updates.
Medium Expansion Foam X31. Helicopter Operations on Ships: AFFF foam type producing expansion ratio 20 to 200 for helideck deluge.
Medium speed engine X19. Engine Room Watchkeeping and UMS Operations: Four stroke engine in the 400 to 1000 rpm range.
Medium Voltage Switchgear X67. Marine Electrical Systems and Shore Power: Switchgear rated above 1 kV and up to 36 kV used on cruise ships, large LNG carriers, and offshore vessels.
MEDIVAC X31. Helicopter Operations on Ships: Medical evacuation flight to remove casualty from offshore installation.
MedLink X36. Shipboard Medical, Telemedicine and Seafarer Health: TMAS service operated by MedAire from Phoenix, Arizona.
MEDLOG Agency X86. Port Agency, Husbandry and Disbursement: MSC group logistics and agency arm operating at various ports.
MedMOU X66. Port State Control and Regional MOUs: Mediterranean MOU on Port State Control, signed 11 July 1997 in Valletta, with Secretariat in Alexandria.
MedMOU Information System X66. Port State Control and Regional MOUs: MedMOU IS, regional PSC database.
MedMOU Member States X66. Port State Control and Regional MOUs: Algeria, Cyprus, Egypt, Israel, Jordan, Lebanon, Malta (observer status varied over time), Morocco, Tunisia, and Turkey.
MEDPOL X126. Marine Oil Spill Response and OPRC Regimes: UNEP/MAP Mediterranean pollution assessment programme.
MEDS X66. Port State Control and Regional MOUs: Mediterranean Memorandum's regional PSC tool used by member authorities.
MEDSLIK-II X126. Marine Oil Spill Response and OPRC Regimes: Open-source Mediterranean oil drift and fate model maintained by OGS and CMRE.
Medusa X10. Marine Biology, Fisheries and Oceanography: Free-swimming adult life stage of jellyfish.
Medway X42. Offshore Wind Installation and Cable Lay: UK reference port for offshore wind logistics support.
Meerwind Sud Ost X123. Offshore Wind Installation Vessels and Operators: 288 MW German wind farm commissioned 2014, Blackstone operated alongside WindMW, 80 Siemens 3.6 MW turbines.
Mefloquine X36. Shipboard Medical, Telemedicine and Seafarer Health: Weekly antimalarial; contraindicated with history of neuropsychiatric disorders.
MEG X14. Offshore Oil and Gas Marine Operations: Monoethylene glycol; hydrate inhibitor injected into subsea flowlines.
MEG-China VLCC X44. Shipping Indices, FFAs and Freight Markets: Middle East Gulf to China voyage defining the TD3C Baltic Dirty Tanker route on VLCC class vessels.
MEG-East Africa MR X44. Shipping Indices, FFAs and Freight Markets: Voyage forming the basis of Baltic TC17 for Medium Range tankers carrying clean petroleum products.
MEG-Japan LR1 X44. Shipping Indices, FFAs and Freight Markets: Voyage forming the basis of Baltic TC5 for LR1 product tankers from the Middle East Gulf to Japan.
MEG3 X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral: OCIMF Mooring Equipment Guidelines, 3rd Edition (2008), now superseded by MEG4.
MEG3 (Mooring Equipment Guidelines, 3rd Edition) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The 2008 OCIMF mooring guidance superseded by MEG4 in 2018 but still referenced for legacy designs.
MEG4 A2. Maritime safety legislation: SOLAS and its codes: OCIMF Mooring Equipment Guidelines, referenced for SOLAS II-1/3-8.
MEG4 (Mooring Equipment Guidelines, 4th Edition) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The 2018 OCIMF guideline introducing LDBF, SDMBL, and mooring system management plans.
MEG4 Addendum X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral: 2020 supplement to MEG4 introducing clarifications on tails, mixed mooring systems, and human factors.
MEG4 LDBF (Line Design Break Force) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA: The new MEG4 metric replacing MBL as the design basis for mooring line strength.
Mega Express X85. Ferries, Ro-Pax Operators and Routes: Corsica Ferries fast monohull and catamaran class deployed on Toulon and Nice to Corsica.
Mega Express Five X132. High-Speed Craft, Hydrofoils and Ferry Operators: Corsica Ferries Italian-built monohull HSC of 175 m, serving Toulon and Nice to Corsica.
Mega Yacht Notation X54. Naval Architecture Software and IACS Rules: Class notation addressing yacht-specific requirements such as LY3 or REG Yacht Code.
Mega-Guard X109. Maritime Autonomous Surface Ships and MASS Code: A Praxis Automation product family that includes autonomous navigation and integrated bridge components.
Mega-hopper X124. Dredging Industry and Reclamation Contractors: TSHD class above 30,000 m3 hopper capacity.
Mega-vessel X6. Container, Intermodal and Trade Codes: Containership above approximately 18,000 TEU.
Mega-Yacht E4. Cruise, offshore energy and auxiliary/specialised fleets: Yacht typically over 80 m.
Megablock X58. Shipbuilding Yards and Construction: Very large preassembled hull section, often weighing 1,000 tonnes or more.
Megafauna X10. Marine Biology, Fisheries and Oceanography: Large marine animals, often defined as greater than 45 kg.
Megamax X6. Container, Intermodal and Trade Codes: Largest ULCV class, around 24,000 TEU.
Megamax-24 X138. Global Container Terminal Operators and Port Equipment: STS crane size class capable of serving 24 container rows across deck of latest 24,000 TEU ULCS vessels.
Megaripple D2. Hydrography, tides, waves, bathymetry and marine geology: Large bedform produced by strong tidal currents.
Megastar X85. Ferries, Ro-Pax Operators and Routes: Tallink LNG dual-fuel ro-pax built 2017 operating Tallinn to Helsinki in just over two hours.
Megayacht X35. Yacht and Superyacht Industry: Informal term for a yacht over roughly 50 m.
MEGC X75. IMDG Code, Classes, Packing and Segregation: Multiple Element Gas Container, assembly of cylinders or tubes for transport of compressed gas under IMDG 6.7.5.
Megger X19. Engine Room Watchkeeping and UMS Operations: Insulation resistance tester used on motors and switchgear.
Megger Test X67. Marine Electrical Systems and Shore Power: Insulation resistance measurement using a high-voltage DC ohmmeter, named after the original Megger Limited instrument.
MEGI X20. LNG Operations and Custody Transfer: MAN ME-GI gas-injection engine, common on Q-Flex retrofits, US-built LNGCs, and many post-2016 newbuilds.
Megi mount X38. Propellers, Stern Gear and Shaft Lines: Resilient mount type used in propulsion auxiliaries; relevant for vibration isolation though not in the main shaft path.
MEGTOP X70. Reefer Containers and Cold Chain Shipping: Mitsubishi Heavy Industries reefer container machinery family for ocean reefer service.
MEGURI 2040 X109. Maritime Autonomous Surface Ships and MASS Code: A Mitsui OSK Lines led Japanese project demonstrating autonomous coastal vessels in the 2020s.
MEHQ X93. IBC Code and Chemical Tanker Operations: Hydroquinone monomethyl ether, a common polymerization inhibitor for vinyl and acrylate monomers carried as IBC Code cargoes.
MEHRA X73. Marine Hydrography, Charting and ENC: Marine Environmental High Risk Area, charted via specific UK ENC overlays.
Mein Schiff X164. Cruise Industry, Brands, Ship Classes, and Terminals: The TUI Cruises German market brand operating a fleet of seven modern ships built primarily at Meyer Turku.
Mein Schiff 1 X64. Cruise Industry Operators, Brands and Ships: TUI Cruises ship delivered in 2018.
Mein Schiff 2 X64. Cruise Industry Operators, Brands and Ships: TUI Cruises ship delivered in 2019.
Mein Schiff 3 X64. Cruise Industry Operators, Brands and Ships: TUI Cruises ship delivered in 2014.
Mein Schiff 4 X64. Cruise Industry Operators, Brands and Ships: TUI Cruises ship delivered in 2015.
Mein Schiff 5 X64. Cruise Industry Operators, Brands and Ships: TUI Cruises ship delivered in 2016.
Mein Schiff 6 X64. Cruise Industry Operators, Brands and Ships: TUI Cruises ship delivered in 2017.
Mein Schiff 7 X64. Cruise Industry Operators, Brands and Ships: TUI Cruises ship delivered in 2024.
Mein Schiff Relax X64. Cruise Industry Operators, Brands and Ships: TUI Cruises LNG dual-fuel ship delivered in 2025.
MEK 11 X47. Marine Fuel Quality and ISO 8217: Designation associated with Mitsubishi self-cleaning centrifugal separator models in marine fuel and lube oil service.
Meko 200 X11. Naval Vessels, Warship Systems and Naval Architecture: Blohm + Voss modular frigate, exported widely.
MEKO A-100 X62. Naval Warships and Combat Systems: Compact MEKO corvette and patrol vessel design.
MEKO A-200 X62. Naval Warships and Combat Systems: Modular frigate design used by South Africa and Algeria.
Mekong X33. Inland Navigation and Barge Operations: Southeast Asian river navigable in sections through Vietnam, Cambodia, Laos, Thailand, and China.
Mekong Delta X10. Marine Biology, Fisheries and Oceanography: Major river delta on the South China Sea coast of Vietnam.
MEL (Mooring Equipment List) X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral: MEG4 document for each ship listing every mooring line, tail, shackle, hook, and fairlead with its certified properties.
Melbourne Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Port Phillip Sea Pilots Pty Ltd, the licensed pilot provider for the Port of Melbourne and Port Phillip Heads.
Meldahl Locks and Dam X103. US Inland Waterway Towing and Barge: An Ohio River navigation structure in Ohio and Kentucky.
Melges 24 F4. Recreational Boating, Yachting and Sport: International high-performance sportsboat by Reichel/Pugh and Melges.
Melges 32 F4. Recreational Boating, Yachting and Sport: International one-design sportsboat.
Mellon, USCGC (WHEC-717) X130. National Coast Guards and Cutter Fleets: Hamilton-class WHEC decommissioned 2020, last of class to retire.
Melville, Herman F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Author of Moby-Dick, Billy Budd, and Typee.
Melvin Price Locks and Dam X103. US Inland Waterway Towing and Barge: The Upper Mississippi River navigation structure at Alton, Illinois that replaced the original Lock and Dam 26.
Member State A1. The IMO and the international regulatory framework: One of the parties to the IMO Convention, currently 176 plus three Associate Members.
Member State Audit A7. Compliance, certification and enforcement: See IMSAS.
Membership of Multiport X86. Port Agency, Husbandry and Disbursement: Membership in the Multiport Ship Agencies Network.
Membrane Bioreactor X63. Marine Auxiliary Machinery and Pumps: STP technology combining biological treatment with membrane filtration, used in PureSewage and Evac MBR units.
Membrane containment X56. LNG/LPG Carriers and IGC Code: Cargo containment system in which the cargo load is supported by the inner hull through thin metallic primary and secondary membranes and load-bearing insulation.
Membrane Containment System X20. LNG Operations and Custody Transfer: Thin metal primary barrier supported continuously by insulation transferring loads to inner hull.
Membrane coupling X38. Propellers, Stern Gear and Shaft Lines: Diaphragm-style flexible coupling accommodating axial and angular misalignment in some gear-driven shaft lines.
Membrane LNG carrier X56. LNG/LPG Carriers and IGC Code: LNG carrier using a GTT membrane containment system in cargo tanks.
Membrane Tank (LNG) X1. Cargo Science, Commodities and Cargo Care: GTT Mark III or NO96 thin steel membrane against insulated hull.
Memoranda X142. Classification Societies and Class Notations: Information items recorded on the class certificate, not affecting class status.
Memorandum Agency Agreement X86. Port Agency, Husbandry and Disbursement: Short form agreement covering specific calls.
Memorandum of agreement C1. Commercial shipping, chartering, economics and finance: MOA, sale and purchase contract for ships.
Memorandum of Agreement (MoA) X29. Ship Sale and Purchase, Management Contracts and Valuation: Binding sale contract for a secondhand ship.
Memorandum of Class X5. Marine Surveying and Inspection: List of outstanding class conditions and recommendations.
Memorandum of Understanding X7. Flag State, Port State Control and Detention Vocabulary: MOU, regional cooperative agreement among port states for harmonized PSC.
Memorandum of Understanding (MoU) X29. Ship Sale and Purchase, Management Contracts and Valuation: Preliminary, often non-binding, statement of terms.
Memorial style X152. Maritime Arbitration and Dispute Resolution: Submission style with full pleadings and supporting evidence filed together, more common in ICC and HKIAC than in LMAA pleading-style references.
Memorial University Marine Institute X55. Marine Simulators, Training and Maritime Academies: Canadian post-secondary institution in St. John's, Newfoundland, offering nautical science, marine engineering, and offshore safety programs.
Memphis District X103. US Inland Waterway Towing and Barge: The US Army Corps of Engineers district responsible for a reach of the Lower Mississippi River.
MEMS Accelerometer X96. Hull Integrity Monitoring and Strain Gauges: Microelectromechanical systems device measuring acceleration using micromachined silicon proof masses.
Menck X105. Offshore Wind Farm Installation and Vessels: German manufacturer of hydraulic impact hammers including the MHU 3500S, MHU 4000S, and MHU 8000S used for monopile installation.
Mendelssohn Hebrides Overture F2. Maritime Culture, Heritage, Archaeology, Art and Museums: 1830 musical work inspired by Fingal's Cave.
Mendocino Cable Landing X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: California landing site historically used for trans-Pacific cables including the original SEA-US system.
Mendocino Fracture Zone X10. Marine Biology, Fisheries and Oceanography: Major Pacific seafloor fracture zone off northern California.
Mengi-Yay X156. Superyacht Industry, Builders, and Yacht Charter Market: Turkish builder at Tuzla producing steel and aluminum motor yachts including the Virtus series.
Mengi-Yay Yachts X125. Superyacht Industry, Builders and Brokers: Istanbul, Turkey builder of custom yachts.
Meningitis vaccine (ACWY) X36. Shipboard Medical, Telemedicine and Seafarer Health: Required for crew on Hajj pilgrim ships and certain ports.
Mental Health Awareness X154. Maritime Welfare, Seafarer Charities, and MLC Rights: Programmatic priority of Sailors' Society, ISWAN, and Mission to Seafarers since 2015.
Mental Health Awareness Training (ISWAN) X102. Seafarer Welfare and Maritime Charities: ISWAN training program for shipping companies on supporting seafarer mental wellbeing.
Mental Health Support Solutions (MHSS) X36. Shipboard Medical, Telemedicine and Seafarer Health: German-based provider of 24/7 psychological support to seafarers.
MEO X68. Maritime Satcom and Telecommunications: Medium Earth Orbit, generally between 2,000 and 35,786 km, used by some emerging maritime services.
MEOSAR X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Medium Earth Orbit segment of Cospas-Sarsat on GPS, Galileo and GLONASS, enabling rapid global localization.
MEPC A1. The IMO and the international regulatory framework: Marine Environment Protection Committee.
MEPC (IMO) B2. Marine Engineering: Marine Environment Protection Committee.
MEPC 80 D6. Decarbonization, emissions and alternative fuels: 80th session of the Marine Environment Protection Committee, adopting the 2023 GHG Strategy.
MEPC 80 Ammonia Recognition X140. Ammonia as Marine Fuel and Hydrogen Shipping: IMO MEPC 80 in July 2023 adopted revised GHG strategy and recognized NH3 as zero-carbon fuel candidate.
MEPC 80 finance metric C1. Commercial shipping, chartering, economics and finance: Carbon intensity considerations affecting Poseidon-aligned lending.
MEPC 83 D6. Decarbonization, emissions and alternative fuels: 83rd session, adopting the 2025 IMO Net-Zero Framework as draft MARPOL amendments.
MEPC Guidelines on Inventory X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: Collective term for MEPC.197(62), MEPC.269(68), and MEPC.379(80) on IHM development.
MEPC Marine Environment Protection Committee X28. Ship Recycling and End-of-Life: IMO committee adopting HKC implementing guidelines.
MEPC Resolutions X66. Port State Control and Regional MOUs: IMO Marine Environment Protection Committee resolutions verified by PSC where transposed into national law.
MEPC Tier II X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: IMO MEPC NOx emission standard applicable to engines installed on or after 1 January 2011.
MEPC Tier III X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: IMO MEPC NOx emission standard applicable in designated ECAs, met by SCR, EGR, or dual-fuel operation.
MEPC.1/Circ.684 X34. Decarbonization, Alternative Fuels and Carbon Pricing: Guidelines for voluntary use of the Energy Efficiency Operational Indicator (EEOI).
MEPC.1/Circ.792 X18. Ballast Water, Biofouling and Antifouling: 2012 Guidance for Minimizing the Transfer of Invasive Aquatic Species as Biofouling for Recreational Craft.
MEPC.1/Circ.815 B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Guidelines for using ISO 15016 in EEDI verification.
MEPC.1/Circ.892 X27. Polar Code, Ice Navigation and Polar Operations: 2018 IMO circular on voluntary use of cleaner alternative fuels to reduce black carbon in the Arctic.
MEPC.1/Circ.906 X18. Ballast Water, Biofouling and Antifouling: 2023 Revised Guidelines for the Reduction of Underwater Radiated Noise from Shipping.
MEPC.107(49) X19. Engine Room Watchkeeping and UMS Operations: IMO resolution on 15 ppm bilge separators and bilge alarms.
MEPC.108(49) X19. Engine Room Watchkeeping and UMS Operations: IMO standard for sewage treatment plants under MARPOL Annex IV.
MEPC.141(54) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The IMO resolution adopting Annex I Reg 12A on protection of fuel oil tanks for ships of 600 cubic metres or more, applied to ships delivered on or after 1 August 2010.
MEPC.176(58) X133. Polar Research Vessels and Polar Code Regimes: 2008 amendment adopting MARPOL Annex VI revised text.
MEPC.179(59) X50. Ship Recycling, Demolition and Hong Kong Convention: The 2009 guidance from the IMO Marine Environment Protection Committee informing the HKC adoption package.
MEPC.182(59) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: IMO Guidelines for sampling of fuel oil for determination of compliance with MARPOL Annex VI.
MEPC.184(59) X47. Marine Fuel Quality and ISO 8217: IMO Marine Environment Protection Committee resolution setting the 2009 Guidelines for exhaust gas cleaning systems, complementary to bunker quality controls.
MEPC.196(62) X50. Ship Recycling, Demolition and Hong Kong Convention: HKC guidelines for surveys, adopted 2011.
MEPC.197(62) X50. Ship Recycling, Demolition and Hong Kong Convention: HKC guidelines for inspections, adopted 2011.
MEPC.201(62) X171. MARPOL 73/78: Annex-by-Annex Detailed Glossary: The IMO resolution adopting the revised MARPOL Annex V in 2011, entering into force 1 January 2013.
MEPC.203(62) X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Resolution of 2011 adopting EEDI and SEEMP amendments to MARPOL Annex VI.
MEPC.207(62) X18. Ballast Water, Biofouling and Antifouling: 2011 IMO Guidelines for the Control and Management of Ships' Biofouling, the original biofouling guidelines.
MEPC.210(63) X50. Ship Recycling, Demolition and Hong Kong Convention: HKC guidelines for the Inventory of Hazardous Materials, adopted 2012.
MEPC.211(63) X50. Ship Recycling, Demolition and Hong Kong Convention: HKC guidelines for authorization of ship recycling facilities, adopted 2012.
MEPC.215(82) X165. Marine Coatings, Antifouling, and Hull Husbandry: IMO resolution adopting the Performance Standard for Protective Coatings for Dedicated Seawater Ballast Tanks, in force 1 July 2008.
MEPC.222(64) X50. Ship Recycling, Demolition and Hong Kong Convention: HKC guidelines for the Ship Recycling Plan, adopted 2012.
MEPC.223(64) X50. Ship Recycling, Demolition and Hong Kong Convention: HKC guidelines for the Statement of Compliance, adopted 2012.
MEPC.227(64) X54. Naval Architecture Software and IACS Rules: IMO Marine Environment Protection Committee resolution on guidelines for approval of ballast water management systems.
MEPC.244(66) X19. Engine Room Watchkeeping and UMS Operations: Standard specification for shipboard incinerators.
MEPC.245(66) X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Resolution providing the 2014 Guidelines on the Method of Calculation of the Attained EEDI for new ships.
MEPC.259(68) X69. EGCS Scrubbers, SCR and Marine Air Emissions: 2015 IMO EGCS guidelines superseding MEPC.184(59).
MEPC.264(68) X27. Polar Code, Ice Navigation and Polar Operations: Adopted environmental provisions of the Polar Code, May 2015.
MEPC.269(68) X50. Ship Recycling, Demolition and Hong Kong Convention: Revised HKC guidelines for the IHM Parts I, II, and III, adopted 2015.
MEPC.275(70) X63. Marine Auxiliary Machinery and Pumps: IMO resolution defining stricter sewage discharge standards in the Baltic Sea special area.
MEPC.288(87) X165. Marine Coatings, Antifouling, and Hull Husbandry: IMO resolution adopting the Performance Standard for Protective Coatings for Cargo Oil Tanks of Crude Oil Tankers, in force 1 January 2013.
MEPC.295(71) X126. Marine Oil Spill Response and OPRC Regimes: IMO resolution on sampling and identification of oil spills.
MEPC.297(72) X158. IMO Conventions, Protocols, Codes, and Resolutions: Resolution of 13 April 2018 amending BWM Convention regulation B-3 implementation schedule.
MEPC.300(72) X18. Ballast Water, Biofouling and Antifouling: 2018 Code for Approval of Ballast Water Management Systems (BWMS Code), mandatory under the BWM Convention.
MEPC.304(72) X34. Decarbonization, Alternative Fuels and Carbon Pricing: IMO Initial Strategy on Reduction of GHG Emissions from Ships (2018).
MEPC.305(73) X158. IMO Conventions, Protocols, Codes, and Resolutions: Resolution adopting the Initial IMO Strategy on Reduction of GHG Emissions from Ships, adopted 13 April 2018.
MEPC.320(74) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: 2019 IMO Guidelines for consistent implementation of the 0.50% sulphur limit.
MEPC.328(76) X34. Decarbonization, Alternative Fuels and Carbon Pricing: Adoption of MARPOL Annex VI amendments establishing EEXI, CII rating, and enhanced SEEMP.
MEPC.329(76) X52. Polar Code, Arctic and Antarctic Shipping: See IMO MEPC.329(76).
MEPC.331(76) X18. Ballast Water, Biofouling and Antifouling: 2021 AFS Convention amendment adding cybutryne to the prohibited active substances.
MEPC.334(76) X158. IMO Conventions, Protocols, Codes, and Resolutions: Resolution adopting amendments to the AFS Convention to control cybutryne, entered into force 1 January 2023.
MEPC.335(76) X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: Guidelines on the shaft or engine power limitation system to comply with the EEXI requirements.
MEPC.336(76) X34. Decarbonization, Alternative Fuels and Carbon Pricing: 2021 Guidelines on operational carbon intensity indicators and the calculation methods.
MEPC.337(76) X112. IMO GHG Strategy, CII, EEXI and EU Maritime Regulation: 2021 Guidelines on the reference lines for use with operational carbon intensity indicators.
MEPC.338(76) X34. Decarbonization, Alternative Fuels and Carbon Pricing: 2021 Guidelines on the reference lines for use with operational carbon intensity indicators.
MEPC.339(76) X111. Methanol, Ammonia and Alternative Marine Fuels: IMO resolution adopting the CII rating framework for ships of 5,000 GT and above.
MEPC.340(77) X69. EGCS Scrubbers, SCR and Marine Air Emissions: 2021 IMO EGCS Guidelines currently in force.
MEPC.346(78) X69. EGCS Scrubbers, SCR and Marine Air Emissions: 2022 IMO resolution related to Annex VI implementation.
MEPC.359(78) X61. Marine Lubricants and Cylinder Oils: International Maritime Organization resolution that adopted amendments to MARPOL Annex VI relating to sulfur fuel and related operational provisions.
MEPC.376(80) X34. Decarbonization, Alternative Fuels and Carbon Pricing: IMO guidelines on lifecycle GHG intensity of marine fuels (LCA).
MEPC.377(80) X34. Decarbonization, Alternative Fuels and Carbon Pricing: IMO 2023 Revised Strategy on Reduction of GHG Emissions from Ships.
MEPC.378(80) X18. Ballast Water, Biofouling and Antifouling: 2023 Revised Guidelines for the Control and Management of Ships' Biofouling.
MEPC.379(80) X50. Ship Recycling, Demolition and Hong Kong Convention: Revised HKC guidelines for inspection of ships, adopted 2023.
MEPC.380(80) X50. Ship Recycling, Demolition and Hong Kong Convention: Revised HKC guidelines for survey and certification of ships, adopted 2023.
MEPC.381(80) X50. Ship Recycling, Demolition and Hong Kong Convention: Revised HKC guidelines for authorization of ship recycling facilities, adopted 2023.
MEPC.391(81) X158. IMO Conventions, Protocols, Codes, and Resolutions: Resolution adopting MARPOL Annex VI amendments for Mediterranean SOx ECA, adopted 22 March 2024.
MEPC.96(47) X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: IMO Guidelines for in-use fuel oil sampling.
Meraviglia Class X164. Cruise Industry, Brands, Ship Classes, and Terminals: An MSC Cruises class of four ships including MSC Meraviglia, MSC Bellissima, MSC Virtuosa, and MSC Euribia.
Mercaptan X45. Marine Paints, Coatings and Antifouling: Reactive curing agent class used in fast-cure epoxy primers for low-temperature application.
Mercator X124. Dredging Industry and Reclamation Contractors: Boskalis Mega Hopper TSHD of 25,000 m3.
Mercator (museum) X128. Sail Training Ships and Tall Ship Associations: Belgian four masted barquentine built 1932 at Leith, 79 m length, sail training to 1960, today preserved at Oostende.
Mercator Ocean International D5. Coastal processes, sea-level, cryosphere and ocean observation science: French organization producing ocean analyses for CMEMS.
Mercator projection B3. Nautical Science: Conformal chart projection with rhumb lines as straight.
Mercator Sailing X78. Voyage Optimization and Vessel Performance Software: A traditional navigation calculation method that derives course and distance between two points using Mercator chart geometry and meridional parts.
Merchant Adventurers X39. Pre-1900 Maritime History: Sixteenth-century English trading company specializing in cloth exports to the Low Countries.
Merchant haulage C1. Commercial shipping, chartering, economics and finance: Container haulage arranged by the shipper, not the carrier.