Glossary

Maritime glossary, terms beginning with L

All maritime glossary terms that begin with the letter L, drawn from every subject section. 1899 entries.

Showing 250 of 1899 terms (page 1 of 8).

L bend X19. Engine Room Watchkeeping and UMS Operations: Pipe expansion configuration absorbing thermal growth between two fixed supports.
L-band X68. Maritime Satcom and Telecommunications: Satellite frequency band around 1.5 to 1.6 GHz used by Inmarsat and Iridium maritime services.
L-Band Satcom E3. Technology, digitalization and smart shipping: Inmarsat/Iridium band for resilient comms.
L-Foil X84. Yacht Racing, Regattas and Sailing Governance: A foil shape with horizontal and vertical sections forming an L, used on AC72s and earlier IMOCA 60s.
L. Smit and Co X167. Major Salvage Companies, Wreck Removals, and Equipment: Original name of the Smit family salvage company founded in 1842 by Lambertus Smit.
L'Astrolabe X133. Polar Research Vessels and Polar Code Regimes: French Navy patrol icebreaker delivered 2017, supports French Southern and Antarctic Lands and Dumont d'Urville.
L'Austral X97. Polar Expedition Cruise and IAATO Operations: Ponant expedition cruise ship delivered in 2011 with 264 PAX.
L'Orient F1. Maritime History: French flagship destroyed at the Battle of the Nile, 1798.
L/B Ratio X54. Naval Architecture Software and IACS Rules: Length-to-beam ratio used as a primary parameter in Holtrop-Mennen and Hollenbach resistance methods.
L&T Shipbuilding X58. Shipbuilding Yards and Construction: Larsen and Toubro shipbuilding division at Kattupalli, Tamil Nadu.
L21/31 (MAN) X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions inline four-stroke medium-speed engine with 210 millimeter bore and 310 millimeter stroke for auxiliary and propulsion duty.
L23/30H (MAN) X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions inline four-stroke medium-speed auxiliary engine with 225 millimeter bore and 300 millimeter stroke.
L27/38 (MAN) X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions inline four-stroke medium-speed engine with 270 millimeter bore and 380 millimeter stroke for main propulsion and generator drive.
L32/40 (MAN) X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions inline four-stroke medium-speed engine with 320 millimeter bore and 400 millimeter stroke widely used on cruise ships and container vessels.
L35/44 G X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions inline four-stroke gas engine with 350 millimeter bore for pure gas propulsion and generator duty.
L3Harris ASV X65. ROVs, AUVs, USVs and Marine Robotics: L3Harris Technologies USV business unit formed from the acquisition of ASV Global.
L3Harris ASView X109. Maritime Autonomous Surface Ships and MASS Code: The autonomy software suite associated with the ASV Global lineage after acquisition by L3 and successor entities.
L3Harris Iver X65. ROVs, AUVs, USVs and Marine Robotics: L3Harris OceanServer Iver family of small AUVs used in academic and defense applications.
L3Harris Klein X65. ROVs, AUVs, USVs and Marine Robotics: L3Harris Klein Marine Systems business unit that supplies sidescan sonars.
L3Harris VMS X74. AIS Data, Vessel Tracking and Maritime Intelligence: Vessel Monitoring System used by fisheries authorities, complementary to AIS coverage.
L40/54 (MAN) X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions inline four-stroke medium-speed marine engine with 400 millimeter bore and 540 millimeter stroke.
L48/60CR (MAN) X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions inline four-stroke medium-speed common rail marine engine with 480 millimeter bore and 600 millimeter stroke.
L51/60DF (MAN) X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions inline four-stroke medium-speed dual-fuel marine engine with 510 millimeter bore and 600 millimeter stroke.
L58/64 (MAN) X90. Marine Engine Specific Model Enumeration: MAN Energy Solutions inline four-stroke medium-speed marine engine with 580 millimeter bore and 640 millimeter stroke for main propulsion.
L5G1 X6. Container, Intermodal and Trade Codes: ISO 6346 size-type code for 45 ft high-cube dry container.
La Boudeuse X128. Sail Training Ships and Tall Ship Associations: Various French expedition replicas; the modern brig La Boudeuse circumnavigated under Patrice Franceschi as a sail training vessel.
La Naval X123. Offshore Wind Installation Vessels and Operators: Spanish shipyard in Sestao that built ITF prototype floating wind platforms before liquidation 2019.
La Naval Sestao X137. Harbour Tugs, Towage Operators and Tug Builders: Basque shipyard that has built large escort tugs.
La Nina D1. Physical and chemical oceanography and marine meteorology: Cool phase of ENSO with enhanced trade winds and cooler eastern equatorial Pacific.
La Rance Tidal Power Station X57. Ocean Energy Beyond Wind: 240 MW tidal range plant on the Rance estuary in Brittany, France, commissioned in 1966 and operated by EDF.
La Rochelle Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Station de pilotage de La Rochelle serving the deep-water port of La Pallice on the French Atlantic coast.
La Spezia Container Terminal X138. Global Container Terminal Operators and Port Equipment: LSCT, Eurogate-controlled Italian Ligurian Sea facility handling 1.3 million TEU in 2023.
La Spezia Cruise Terminal X164. Cruise Industry, Brands, Ship Classes, and Terminals: The Ligurian cruise port serving Florence and Cinque Terre excursions, with berths at Molo Garibaldi and Molo Italia.
La Triennale Internazionale del Mare X119. Maritime Conferences, Trade Shows and Awards: Italian maritime trade fair held every three years in Trieste.
LA-Long Beach Pilots X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Combined reference to the Jacobsen Pilot Service at Long Beach and the Los Angeles Port Pilots licensed by the City of Los Angeles.
Lab Analysis X28. Ship Recycling and End-of-Life: Quantitative chemical testing of suspect samples for IHM materials.
Lab sample X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Portion of the bunker drip sample sent to a testing laboratory.
Label X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: A diamond-shaped (square-on-point) primary or subsidiary hazard marking of at least 100 mm x 100 mm on packages per 5.2.2.
Labels X75. IMDG Code, Classes, Packing and Segregation: Square on point hazard diamonds of side length 100 mm required on each package containing dangerous goods.
Labeo Net (Inland Fishery) X87. Fishing Vessels and Fisheries Management: Indian inland fishery gear, mentioned to distinguish from marine commercial nets.
Labor X3. Ship Handling, Seamanship and Deck Vocabulary: Pitch and roll heavily.
Labor Migrant X28. Ship Recycling and End-of-Life: Worker relocating from inland regions to recycling yards, typical at Chittagong and Alang.
Labor supplying State X21. STCW Certificates, Crewing and Seafarer Welfare: Country providing seafarers to ships flagged elsewhere, with duties under MLC Article V.
Laboratory analysis C2. Ship operations, crewing and technical management: Fuel analysis under ISO 8217 testing.
Laboratory Report X115. Marine Bunker and Cargo Surveying: Document issued by an accredited testing laboratory presenting analytical results for bunker or cargo samples.
Laboratory Survey X43. Marine Surveying and Warranty Surveying: A documentary and physical inspection of shoreside or shipboard laboratories supporting cargo sampling, particularly under petroleum custody transfer protocols.
Labour-Supplying Country X154. Maritime Welfare, Seafarer Charities, and MLC Rights: ILO category for major crewing nations such as the Philippines, India, Indonesia, China, Ukraine, and Russia.
Labrador Current X10. Marine Biology, Fisheries and Oceanography: Cold southward current along the east coast of Canada.
Labrador Sea X10. Marine Biology, Fisheries and Oceanography: Sea between Labrador and Greenland, site of deep convection.
Labrador Sea Water D1. Physical and chemical oceanography and marine meteorology: Intermediate water mass formed by deep convection in the Labrador Sea.
Labuan FSA X117. Marine Insurance Markets, Captives and Reinsurance: Labour Financial Services Authority regulating the Labuan captive market in Malaysia, with around 200 captives.
Labuan IBFC X117. Marine Insurance Markets, Captives and Reinsurance: Labuan International Business and Financial Centre marketing the jurisdiction for Asian captives.
Laches X51. Maritime Arbitration, Law and BIMCO Clauses: The equitable doctrine barring claims pursued without reasonable diligence to the prejudice of the defendant.
Laconia, The (Mardorf Peach v Attica Sea Carriers) [1977] AC 850 X143. Landmark Maritime Law Cases and Doctrines: House of Lords held that punctual payment of hire is a condition of NYPE charters justifying withdrawal.
Laconian Bay (Lakonikos) X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: A Greek anchorage on the Peloponnese coast that became a major STS transfer hub for Russian-origin crude after February 2022.
Lacq pilot X57. Ocean Energy Beyond Wind: Early French CCS pilot operated by Total at the Lacq gas field, referenced in offshore CCS technology transfer studies.
Lacquer X45. Marine Paints, Coatings and Antifouling: Single-pack solvent-evaporating coating, used historically for furniture and decorative trim and rarely for hull work.
Lactating Worker Accommodation X41. Cruise Ship Public Health and VSP/USPH: Food handler policy ensuring dedicated, sanitary pumping spaces away from food areas.
Lacustrine Sediment D2. Hydrography, tides, waves, bathymetry and marine geology: Sediment deposited in lakes; sometimes preserved in coastal sequences.
Lada class X11. Naval Vessels, Warship Systems and Naval Architecture: Russian Project 677 diesel-electric submarine, planned AIP fit.
Ladder X15. Ports, Terminals and Stevedoring: pilot ladder, accommodation ladder, or fixed quay ladder for personnel.
Ladder block X58. Shipbuilding Yards and Construction: Outfitting module containing engine room ladders and gratings, installed during engine room outfitting.
Ladder height limit X32. Marine Pilotage and Pilot Operations: 9 m maximum free hanging length of a pilot ladder over the ship's side.
Ladder identification tag X32. Marine Pilotage and Pilot Operations: Permanent label on each pilot ladder showing manufacturer, date, and standard.
Ladder lighting X32. Marine Pilotage and Pilot Operations: Permanently fitted ship's lighting illuminating the pilot ladder and over-side area at night.
Ladder maintenance X32. Marine Pilotage and Pilot Operations: Routine inspection, lubrication, and replacement of worn pilot ladder components.
Ladder rigging X32. Marine Pilotage and Pilot Operations: Process of deploying and securing the pilot ladder for pilot transfer.
Ladder securing X32. Marine Pilotage and Pilot Operations: Securing of pilot ladder to strong points well above deck level, not to ship's rails.
Ladder spotter X32. Marine Pilotage and Pilot Operations: Crew member stationed at the pilot embarkation deck during pilot transfer.
Ladder Survey X5. Marine Surveying and Inspection: Inspection of pilot, gangway, accommodation, and tank ladders for compliance.
Laden X6. Container, Intermodal and Trade Codes: Loaded with cargo.
Laden Repositioning X83. ISO Container Manufacturing and Leasing: Repositioning of containers in laden moves rather than empty.
Laden voyage C1. Commercial shipping, chartering, economics and finance: Voyage performed with revenue cargo.
Laden Voyage Call X86. Port Agency, Husbandry and Disbursement: Port call performed with cargo on board, in contrast to a ballast voyage call.
Laden Voyage Survey X5. Marine Surveying and Inspection: Inspection during cargo laden voyages for casualty or P&I purposes.
LADS Mk3 X129. Hydrographic Offices, Survey Vessels and Marine Cartography: Australian airborne lidar bathymetry system developed for the Royal Australian Navy, supporting AHO charting of shallow tropical waters.
Lady Lara X125. Superyacht Industry, Builders and Brokers: 91 m Lurssen delivered 2015 to Alexander Machkevitch.
Lady M (2013) X125. Superyacht Industry, Builders and Brokers: Palmer Johnson 65 m motoryacht.
Lady Maud X128. Sail Training Ships and Tall Ship Associations: 1907 British Thames sailing barge, 33 m sparred length, used in UK youth sail charters.
Lady Moura X125. Superyacht Industry, Builders and Brokers: 105 m Blohm+Voss delivered 1990 to Nasser Al-Rashid, with retractable beach club.
Lady Nelson (replica) X128. Sail Training Ships and Tall Ship Associations: 1988 Australian replica of the 1799 brig sloop, 19 m length, operated by the Tasmanian Sail Training Association at Hobart.
Lady Washington X128. Sail Training Ships and Tall Ship Associations: 1989 American replica of the 1750 brig, 34 m length, operated by Grays Harbor Historical Seaport, Washington's official ship.
Laem Chabang X138. Global Container Terminal Operators and Port Equipment: Thailand's principal container port with multiple operators including Hutchison Ports, ESCO and TIPS, 8.8 million TEU handled in 2023.
Laem Chabang Bunker Service X72. Bunkering Hubs and Bunker Suppliers: Bunker supply at the Port of Laem Chabang Thailand by Thaioil Marine and Sahacogen.
Lafayette X124. Dredging Industry and Reclamation Contractors: GLDD TSHD.
Lafayette class X11. Naval Vessels, Warship Systems and Naval Architecture: USN SSBN of 1960s, last conventional pre-Ohio boat.
LAFS X102. Seafarer Welfare and Maritime Charities: Lloyd's Agency Welfare Network reference for Lloyd's Agency Field Services supporting maritime casualty response.
Lagoon X10. Marine Biology, Fisheries and Oceanography: Shallow body of water separated from a larger body by a barrier such as a reef or barrier island.
Lagoon (tidal) X57. Ocean Energy Beyond Wind: Impoundment that does not span an estuary, used in concepts such as the cancelled Swansea Bay Tidal Lagoon.
Lagoon Catamarans X156. Superyacht Industry, Builders, and Yacht Charter Market: French builder at Bordeaux, part of the Beneteau group, producing cruising catamarans up to about 24 meters.
Lagos / Apapa X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Nigerian bunker market dominated by NNPC and local traders, with quality risk widely flagged by surveyors.
Lagos Bunker Anchorage X72. Bunkering Hubs and Bunker Suppliers: Nigerian bunker call at Lagos with formal supplies by NNPC Retail and Total Energies Marketing.
Lagrangian Drifter Network D5. Coastal processes, sea-level, cryosphere and ocean observation science: Set of free drifting floats or buoys.
Lagrangian Measurement D1. Physical and chemical oceanography and marine meteorology: Observation following a moving water parcel.
Lagrangian Particle Tracking X54. Naval Architecture Software and IACS Rules: Discrete phase technique in STAR-CCM+ and Fluent for spray and droplet studies.
Laid-Up Returns X108. Marine Insurance and P&I Clubs: Hull premium refunds payable when a vessel is laid up in a safe port for a continuous period of at least 30 days.
Laid-Up Survey X43. Marine Surveying and Warranty Surveying: A periodic condition inspection of vessels in cold or warm layup to monitor preservation measures and detect deterioration.
Laird Brothers X39. Pre-1900 Maritime History: Birkenhead shipbuilder founded by William Laird in 1828, predecessor of Cammell Laird.
Lake Charles Cracker X104. Project Cargo Forwarders and Heavy Transport: Sasol ethylene cracker project in Louisiana, a notable heavy module destination.
Lake Effect (Cryosphere) D5. Coastal processes, sea-level, cryosphere and ocean observation science: Polynyas behaving thermally like lakes.
Lake Freighter (Laker) B5. Ship Types and Individual Vessels: Self-unloading Great Lakes bulker.
Lake Pontchartrain X103. US Inland Waterway Towing and Barge: A Louisiana lake adjacent to the GIWW system used in limited towing service.
Lal Bahadur Shastri College of Advanced Maritime Studies X121. Maritime Education, Academies and Universities: LBS in Mumbai Port, founded 1949, post-sea maritime training college now part of IMU Mumbai Port Campus offering DGS modular and competency courses.
Lal Bahadur Shastri College of Advanced Maritime Studies and Research (LBS CAMSAR) X160. Maritime Academies, Universities, and STCW Certification: Indian DG Shipping operated institute at Powai Mumbai offering management-level officer upgrade courses.
Lamb (Frozen) X120. Marine Catering, Provisions and Ship Chandlers: IMPA 550908 frozen lamb cuts, New Zealand and Australian origin dominant.
Lamb reefer carriage X70. Reefer Containers and Cold Chain Shipping: Chilled lamb at minus 1.5 to zero degrees Celsius and frozen lamb at minus 18 degrees Celsius, with vacuum packaging extending chilled shelf life.
Lambda X123. Offshore Wind Installation Vessels and Operators: Cadeler-designed cable lay vessel ordered for 2026 delivery.
Lambda (Insulation Conductivity) X20. LNG Operations and Custody Transfer: Thermal conductivity of CCS insulation; perlite around 0.025 W/m.K, polyurethane foam around 0.022 W/m.K.
Lambda controller X19. Engine Room Watchkeeping and UMS Operations: Air to fuel ratio limiter on engine governor preventing smoke during load increase.
Lambda Cyhalothrin X75. IMDG Code, Classes, Packing and Segregation: Pesticide active ingredient that often classifies as UN 3349 Class 6.1.
Lambert Brothers X79. Tugs and Towage Industry: Historic British towage interest associated with London river towage.
Lambert conformal projection X16. Nautical Science, Navigation and COLREGs: Conic projection used for aeronautical and some nautical charts.
Lambertus Smit X167. Major Salvage Companies, Wreck Removals, and Equipment: Founder in 1842 of L. Smit and Co tugboat and salvage operation in Kinderdijk, Netherlands.
Lamella Separator X63. Marine Auxiliary Machinery and Pumps: Inclined plate settling unit used in some OWS designs to enhance gravity separation.
Lamellar pigment X165. Marine Coatings, Antifouling, and Hull Husbandry: Plate-shaped pigment such as glass flake or MIO that increases barrier path length within an organic coating.
Laminar flow regime (tidal) X57. Ocean Energy Beyond Wind: Idealized smooth flow regime contrasted with the turbulent reality at most tidal stream sites.
Lamma Channel X124. Dredging Industry and Reclamation Contractors: Hong Kong area dredged for power-station cooling intake.
Lamnalco X60. Marine Salvage and Wreck Removal: International integrated marine services provider with bases in the Middle East and Africa.
Lamor X60. Marine Salvage and Wreck Removal: Finnish manufacturer of oil spill response equipment including brush type skimmers.
Lamor Brush Skimmer X60. Marine Salvage and Wreck Removal: Oil recovery device using rotating brushes to lift oil from the water surface.
Lamp Test X5. Marine Surveying and Inspection: Functional test of indicator lamps on safety panels.
Lamprell X113. Drydock and Ship Repair Yards: UAE-based offshore fabricator and repairer with facilities at Hamriyah and Sharjah serving the oilfield equipment market.
LAMPS X11. Naval Vessels, Warship Systems and Naval Architecture: Light Airborne Multi-Purpose System, SH-60 ASW/ASuW helicopter.
LAN X107. Maritime Cybersecurity and OT Security: Local Area Network, a network limited to a single site such as a ship or office.
LAN Port X68. Maritime Satcom and Telecommunications: Ethernet interface on a satellite terminal connecting to vessel networks.
Lanai cabin X24. Cruise, Passenger Ship and Ferry Operations: Holland America stateroom with direct access to the Lower Promenade Deck.
Lancashire Energy Hub X123. Offshore Wind Installation Vessels and Operators: UK Northwest regional cluster including Walney, Walney Extension and Burbo Bank wind farms.
Lancashire Holdings X117. Marine Insurance Markets, Captives and Reinsurance: Bermuda and London specialty insurer and reinsurer writing marine and energy through Lloyd's Syndicate 2010 (LSM).
Land Based Bridge X109. Maritime Autonomous Surface Ships and MASS Code: A shore facility from which a remote operator monitors and, when required, controls a MASS at sea.
Land Based Pilot X109. Maritime Autonomous Surface Ships and MASS Code: A pilotage concept in which a pilot guides a vessel into port from a shore center using onboard sensors and links.
Land breeze X3. Ship Handling, Seamanship and Deck Vocabulary: Offshore wind at night caused by cooling land.
Land bridge X15. Ports, Terminals and Stevedoring: rail link connecting two seaboards through a port.
Land Earth Station X68. Maritime Satcom and Telecommunications: Earlier Inmarsat term for a gateway connecting the satellite network to terrestrial networks.
Land Or Discard Choice (Pre-Landing Obligation) X87. Fishing Vessels and Fisheries Management: Historical decision faced by EU vessels before the discard ban took full effect.
Land reclamation X124. Dredging Industry and Reclamation Contractors: Creation of new land by filling water with sand, gravel or rock.
Land SAR X80. Maritime Search and Rescue Coordination: Land-based SAR distinct from maritime SAR operations.
Land Survey Heavy Move X104. Project Cargo Forwarders and Heavy Transport: Topographic survey of a haul route to validate trailer combination feasibility.
Land Use Plan for the Sea (Polish MSP) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Poland's national marine spatial plan adopted in 2021 setting cable, pipeline, and wind zones.
Land-Based RAS D4. Fisheries, aquaculture, blue economy and marine resources: Recirculating aquaculture system located onshore.
Land-based recycling X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: A recycling method conducted on impermeable surfaces with full containment, recognized as the gold standard under the EU SRR.
Land-based test (LBT) X18. Ballast Water, Biofouling and Antifouling: BWMS performance test conducted at an accredited shore facility under MEPC.300(72).
Land-Fast Ice D5. Coastal processes, sea-level, cryosphere and ocean observation science: Sea ice attached to the coast.
Land-Locked State A6. Public international law of the sea: Right of access to and from the sea under UNCLOS Article 125.
Land-side X15. Ports, Terminals and Stevedoring: inland side of the terminal opposite the waterside.
Landbridge X6. Container, Intermodal and Trade Codes: Through service moving containers across a continent by rail rather than around it.
Landfall B3. Nautical Science: First sighting of land after ocean passage.
Landfall (subsea cable) X57. Ocean Energy Beyond Wind: Location where an offshore cable or pipeline transitions to onshore infrastructure, regulated as part of EIA processes.
Landing certificate X6. Container, Intermodal and Trade Codes: Customs proof of delivery into destination country.
Landing craft X11. Naval Vessels, Warship Systems and Naval Architecture: Small amphibious craft, e.g., LCAC, LCU, LCM.
Landing Craft Air Cushion (LCAC) E2. Naval, defence and maritime law enforcement: Hovercraft for amphibious landings.
Landing Declaration X87. Fishing Vessels and Fisheries Management: Statement of species and weights landed, required under EU Regulation 1224/2009 and most national systems.
Landing Helicopter Assault (LHA) E2. Naval, defence and maritime law enforcement: USN big-deck amphibious ship.
Landing Helicopter Dock (LHD) E2. Naval, defence and maritime law enforcement: USN amphibious ship with well deck.
Landing Mat X104. Project Cargo Forwarders and Heavy Transport: Heavy mat placed where a project unit will be set down by crane or trailer.
Landing Method X50. Ship Recycling, Demolition and Hong Kong Convention: A dismantling approach where the vessel is positioned on a sloped concrete or steel slipway, used at several European and Chinese yards.
Landing Obligation X87. Fishing Vessels and Fisheries Management: EU Common Fisheries Policy requirement to land all catches of TAC regulated species, phased in from 2015 to 2019.
Landing Obligation (EU) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Article 15 of the Common Fisheries Policy requiring all catches of quota species to be landed and counted against quota.
Landing Pier Method X28. Ship Recycling and End-of-Life: Recycling method with the bow pulled up a concrete slipway, used at Aliaga.
Landing Platform Dock (LPD) E2. Naval, defence and maritime law enforcement: Amphibious transport dock.
Landing Ship Tank (LST) E2. Naval, defence and maritime law enforcement: Bow-ramp amphibious ship.
Landings D4. Fisheries, aquaculture, blue economy and marine resources: Quantity of catch brought to port.
Landlord port C4. Ports, terminals and coastal/marine civil engineering: Governance model where port authority owns land, leases to private operators.
Landmark X73. Marine Hydrography, Charting and ENC: ENC object LNDMRK representing a conspicuous feature ashore used for visual navigation.
Landmark casualty inquiry X163. Marine Accident Investigation Agencies and Landmark Inquiries: Investigation whose findings produced significant changes to international or national maritime safety regulation, such as the British Wreck Commissioner inquiry into Titanic.
Landsat Coastal Mapping D2. Hydrography, tides, waves, bathymetry and marine geology: Use of Landsat imagery for coastal change analysis.
Landside apron X175. Port Engineering, Dredging, Breakwaters, and Quays: Paved area immediately behind a quay wall used for crane rails, container handling, or cargo storage.
Landside operations X15. Ports, Terminals and Stevedoring: gate, yard, and rail activities outside the quay zone.
Lane meter X85. Ferries, Ro-Pax Operators and Routes: Standard ro-pax and ro-ro freight capacity unit equal to one meter of two-meter-wide deck lane.
Langmuir Circulation D1. Physical and chemical oceanography and marine meteorology: Wind-driven helical roll cells in the surface mixed layer.
Langnas X85. Ferries, Ro-Pax Operators and Routes: Aland port used by Viking Line for Turku to Stockholm calls.
Language of arbitration X152. Maritime Arbitration and Dispute Resolution: Procedural language adopted for proceedings; English is standard in LMAA, SCMA, HKIAC, and SMA maritime references.
Lankhorst Ropes X94. Port Machinery and Quay Equipment Makers: Dutch rope manufacturer in Sneek producing MoorLine HMPE and polyester mooring ropes.
Lankoforce X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral: Lankhorst trade name for HMPE mooring line products targeting tanker and gas carrier moorings.
Lannion X122. Submarine Cable Laying, Repair Vessels and Operators: Orange Marine R and D and cable plant in Brittany producing repeaters and BUs for ASN systems.
Lantern X23. AIS, GMDSS, IALA Buoyage and Aids to Navigation: Optical assembly housing the light source of an aid.
Lanyard X3. Ship Handling, Seamanship and Deck Vocabulary: Short rope securing or making fast.
Lap link X3. Ship Handling, Seamanship and Deck Vocabulary: Repair link closing a parted chain.
Lapan Lapan Bunker Anchorage X72. Bunkering Hubs and Bunker Suppliers: Sabah east coast anchorage off Sandakan used for outport bunkering in Malaysian waters.
Lapping X61. Marine Lubricants and Cylinder Oils: Liner running-in process during which controlled cylinder oil feed develops the wear pattern that supports long-term ring sealing.
Laptev Sea X10. Marine Biology, Fisheries and Oceanography: Marginal Arctic sea between the Taymyr Peninsula and the New Siberian Islands.
Larboard X3. Ship Handling, Seamanship and Deck Vocabulary: Old term for port side, no longer used.
Lard Oil X93. IBC Code and Chemical Tanker Operations: Animal fat derived from rendered pork, carried in bulk as a Category Y product under MARPOL Annex II.
Large Commercial Yacht (LY) X156. Superyacht Industry, Builders, and Yacht Charter Market: Defined in the REG codes as a yacht of 24 meters and above load line length in commercial use carrying not more than 12 passengers.
Large Packaging X75. IMDG Code, Classes, Packing and Segregation: Packaging with mass over 400 kg or capacity over 450 liters but not more than 3 cubic meters, codes 50A and similar under IMDG 6.6.
Large Range 1 (LR1) X44. Shipping Indices, FFAs and Freight Markets: Product tanker class of approximately 55,000 to 80,000 deadweight tons whose routes include the TC5 and TC7 Baltic assessments.
Large Range 2 (LR2) X44. Shipping Indices, FFAs and Freight Markets: Product tanker class of approximately 80,000 to 120,000 deadweight tons used for long-haul clean and dirty product voyages.
Large Salvage Packaging X75. IMDG Code, Classes, Packing and Segregation: Packaging used to recover damaged dangerous goods packages, code 50AS under IMDG 6.6.
Large Yacht Code (LY3) X156. Superyacht Industry, Builders, and Yacht Charter Market: Red Ensign Group code published in 2013 setting construction, equipment, manning, and survey rules for commercial yachts of 24 meters and above.
Large Yacht Code (LY4) X156. Superyacht Industry, Builders, and Yacht Charter Market: Successor REG code published in 2024 consolidating and updating LY3 requirements for new and existing commercial yachts.
Large Yacht Code 3 X125. Superyacht Industry, Builders and Brokers: LY3, the MCA Code of Practice for yachts above 24 m load line length operating commercially up to 3,000 GT.
Large Yacht Code Edition 4 X125. Superyacht Industry, Builders and Brokers: Subsumed into the Red Ensign Group Yacht Code from 2019.
Largest cruise ship X64. Cruise Industry Operators, Brands and Ships: Title held by Royal Caribbean's Icon of the Seas at 248,663 GT as of 2024.
Larne X85. Ferries, Ro-Pax Operators and Routes: Northern Irish port hosting P&O Ferries services to Cairnryan.
Larose Yard X113. Drydock and Ship Repair Yards: Bollinger facility in Larose, Louisiana, supporting workboat and offshore vessel construction and repair.
LARS X14. Offshore Oil and Gas Marine Operations: Launch and recovery system for ROVs, bells, and AUVs.
LARS (launch and recovery system) X27. Polar Code, Ice Navigation and Polar Operations: Polar Code requires functionality at Polar Service Temperature.
Lars Thrane LT-3100S X95. GMDSS Equipment and Survival Craft Communications: Iridium SafetyCast capable GMDSS satellite terminal manufactured by Lars Thrane A/S of Denmark, type approved for the Iridium maritime safety service.
Larsen and Toubro Shipbuilding X137. Harbour Tugs, Towage Operators and Tug Builders: Indian builder of ASD and conventional tugs for Indian ports and navy.
Larsen Ice Shelf D5. Coastal processes, sea-level, cryosphere and ocean observation science: Antarctic ice shelf whose recent disintegrations are widely studied.
Larsen Method X5. Marine Surveying and Inspection: Specific draft survey calculation procedure for hogging or sagging vessels.
Larvacea X10. Marine Biology, Fisheries and Oceanography: Pelagic tunicates (Appendicularia) producing mucus houses that sink as marine snow.
Larvae X10. Marine Biology, Fisheries and Oceanography: Immature life stage morphologically distinct from the adult.
Larval Dispersal D3. Marine environmental science, pollution and conservation: Transport of larvae by ocean currents, influencing connectivity.
Larvik X85. Ferries, Ro-Pax Operators and Routes: Norwegian Vestfold port hosting Color Line SuperSpeed services to Hirtshals.
Laryngeal mask airway (LMA) X36. Shipboard Medical, Telemedicine and Seafarer Health: Supraglottic airway device on cruise-ship resuscitation trolleys.
Laryngoscope X36. Shipboard Medical, Telemedicine and Seafarer Health: Direct or video device used by physicians on passenger ships.
Las Palmas X116. Global Bunker Anchorages, Hubs and Supply Infrastructure: Canary Islands bunker hub for Atlantic crossings, supplied by Repsol, Cepsa, Petrologis Canarias, and Ducar.
Las Palmas Anchorage X72. Bunkering Hubs and Bunker Suppliers: Atlantic crossing bunker anchorage off Las Palmas de Gran Canaria served by CEPSA, DISA, and Vitol.
Las Palmas Cruise Terminal X164. Cruise Industry, Brands, Ship Classes, and Terminals: The cruise terminal at Puerto de Las Palmas in Gran Canaria, a key Canary Islands transit point.
Las Palmas Port Authority X72. Bunkering Hubs and Bunker Suppliers: Autoridad Portuaria de Las Palmas, licensing bunker suppliers in Las Palmas, Arrecife, and Puerto del Rosario.
Las Palmas Provisioning X120. Marine Catering, Provisions and Ship Chandlers: Major Atlantic crossroads hub on Gran Canaria, used for Africa and South America bound vessels.
Lascar Heritage F2. Maritime Culture, Heritage, Archaeology, Art and Museums: South Asian merchant seamen of the eighteenth to twentieth centuries.
Lascar Welfare X102. Seafarer Welfare and Maritime Charities: Historic UK term for welfare arrangements for South Asian seafarers, addressed by 19th-century Sailors' Homes.
Laser X84. Yacht Racing, Regattas and Sailing Governance: A single-handed dinghy designed by Bruce Kirby and Ian Bruce in 1971, now branded ILCA.
Laser 2000 F4. Recreational Boating, Yachting and Sport: Two-person trapeze dinghy.
Laser 4.7, ILCA 4 F4. Recreational Boating, Yachting and Sport: Smaller-rigged ILCA class for younger sailors.
Laser Cutting X50. Ship Recycling, Demolition and Hong Kong Convention: A precision cutting technology used selectively for non-ferrous components and equipment recovery.
Laser cutting (CO2/fiber) B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Plate cutting method.
Laser Pico F4. Recreational Boating, Yachting and Sport: Entry-level Laser-brand dinghy.
Laser Radial, ILCA 6 F4. Recreational Boating, Yachting and Sport: Women's Olympic dinghy.
Laser shaft alignment X38. Propellers, Stern Gear and Shaft Lines: Optical method using a laser source and target to measure shaft straightness and bearing offsets.
Laser, ILCA Dinghy F4. Recreational Boating, Yachting and Sport: Single-handed Bruce Kirby-designed dinghy, Olympic since 1996, now branded ILCA 7.
Lash X3. Ship Handling, Seamanship and Deck Vocabulary: Secure with rope or wire.
Lash barge X15. Ports, Terminals and Stevedoring: lighter aboard ship system, historic but still in spares trade.
LASH carrier B5. Ship Types and Individual Vessels: Lighter Aboard Ship.
Lashed Tow X33. Inland Navigation and Barge Operations: US river tow with barges rigidly secured to a pusher.
Lashing X6. Container, Intermodal and Trade Codes: Securing containers on a vessel with rods, turnbuckles, and twistlocks.
Lashing Bar X1. Cargo Science, Commodities and Cargo Care: See Container Lashing Bar.
Lashing bridge X6. Container, Intermodal and Trade Codes: Elevated platform above the hatch covers from which containers are lashed.
Lashing Calculation X104. Project Cargo Forwarders and Heavy Transport: Computation showing that fitted lashings can resist expected accelerations at sea.
Lashing Capacity (LC) X9. Cargo Securing, Lashing and Stability Vocabulary: Maximum lashing force declared by manufacturer per EN 12195-2 for web lashings.
Lashing certificate C2. Ship operations, crewing and technical management: Certificate for cargo securing under CSS.
Lashing charges C1. Commercial shipping, chartering, economics and finance: Charges for securing cargo on deck or in holds.
Lashing Code X54. Naval Architecture Software and IACS Rules: IMO Cargo Stowage and Securing Code influencing container vessel class notation calculations.
Lashing Computer X9. Cargo Securing, Lashing and Stability Vocabulary: Onboard software validating container lashing arrangements per class rules.
Lashing crew X76. Stevedoring, Lashing and Cargo Securing: Stevedoring team specializing in attaching and removing container lashing gear.
Lashing Detection (Stowaway) E1. Maritime security, geopolitics and risk: Inspection regimes for void spaces.
Lashing equipment certification B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: GL/DNV approved twistlocks.
Lashing Eye X9. Cargo Securing, Lashing and Stability Vocabulary: Forged or cast loop fitted to deck or cargo.
Lashing eye (RoRo) X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping: A deck-mounted D-ring on a RoRo or RoPax deck used to secure trailers and trade-vehicles with chains and webbings under IMO CSS Code.
Lashing Failure X13. Marine Salvage and Wreck Removal: Loss of container stack integrity that creates wreck and salvage demand.
Lashing Force Calculation X9. Cargo Securing, Lashing and Stability Vocabulary: Process detailed in CSS Annex 13 or class lashing rules.
Lashing Foundation X169. Container Terminal Cranes, Yard Equipment, and Lashing: Welded base on the hatch cover or deck that receives the eye of a lashing rod or the base of a twistlock.
Lashing Hook X9. Cargo Securing, Lashing and Stability Vocabulary: Hook terminating a lashing.
Lashing manual C3. Logistics, freight forwarding and multimodal trade: CSS aligned cargo lashing manual.
Lashing pattern X76. Stevedoring, Lashing and Cargo Securing: Defined arrangement of rods, turnbuckles, and twistlocks for a given container stack.
Lashing Plan X9. Cargo Securing, Lashing and Stability Vocabulary: Drawing showing lashing arrangement, included in CSM.
Lashing Plate X1. Cargo Science, Commodities and Cargo Care: Welded pad-eye in hold or on deck.
Lashing platform X15. Ports, Terminals and Stevedoring: portable platform at first tier for manual lashing.
Lashing Point X9. Cargo Securing, Lashing and Stability Vocabulary: Designated attachment for lashings, rated to a known MSL.