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Glossary

Maritime glossary, terms beginning with L (page 6)

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

Showing 250 of 1899 terms (page 6 of 8).

LNB X68. Maritime Satcom and Telecommunications
Low Noise Block downconverter at the antenna that amplifies and shifts the received signal to an intermediate frequency.
LNG X1. Cargo Science, Commodities and Cargo Care
Liquefied natural gas; ~-162 C, near atmospheric pressure.
LNG (Liquefied Natural Gas) X34. Decarbonization, Alternative Fuels and Carbon Pricing
Methane-dominant fuel liquefied at approximately minus 162 C; typical WtW reduction of 15 to 20 percent versus HFO is offset by methane slip.
LNG as Fuel A3. Marine environmental legislation: MARPOL and its annexes
Addressed under MARPOL Annex VI for emission control and IGF Code for safety.
LNG Boil-Off Gas (BOG) X1. Cargo Science, Commodities and Cargo Care
Vapor generated by heat ingress; used as fuel or reliquefied.
LNG bunker X47. Marine Fuel Quality and ISO 8217
Liquefied natural gas supplied at approximately minus 162 C as marine fuel, with quality addressed in ISO/TS 18683 and ISO 23306.
LNG Bunker Articulated Tug Barge (ATB) X110. LNG Bunkering Infrastructure and Vessels
Tug and barge unit configured for LNG bunker delivery, including the Crowley Quantum Park ATB at Jacksonville.
LNG Bunker Barge X33. Inland Navigation and Barge Operations
Barge supplying liquefied natural gas to vessels at inland or port locations.
LNG Bunker Checklist X110. LNG Bunkering Infrastructure and Vessels
Standardized pre-transfer, transfer, and post-transfer checklist developed under SGMF and ISO 20519 guidance.
LNG Bunker Loading Arm X72. Bunkering Hubs and Bunker Suppliers
Hard cryogenic articulated arm used in LNG bunker transfer in port to ship operations.
LNG bunker spec X2. Marine Bunker Fuels, Lubricants and Bunkering Operations
Quality requirements drawn from ISO 23306 and CWA 15375 for LNG used as marine fuel.
LNG Bunker Vessel (LBV) X110. LNG Bunkering Infrastructure and Vessels
Vessel dedicated to delivering LNG fuel to receiving ships, typically by ship-to-ship transfer.
LNG Bunkering D6. Decarbonization, emissions and alternative fuels
Process of supplying liquefied natural gas as marine fuel.
LNG bunkering manifold B2. Marine Engineering
ISO-standard transfer connection for LNG.
LNG Bunkering Pipeline X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines
Subsea or shore-to-ship pipeline transferring liquefied natural gas at bunkering terminals.
LNG Cargo Simulator X144. Bridge Simulators, Engine Room Simulators, and Maritime Training Equipment
STCW A-V/1-2 advanced LNG cargo handling simulator.
LNG Carrier E4. Cruise, offshore energy and auxiliary/specialised fleets
Vessel carrying liquefied natural gas at -162°C.
LNG carrier Arc7 X27. Polar Code, Ice Navigation and Polar Operations
Ice-class LNG carriers built for Yamal LNG; pioneered year-round NSR operations.
LNG Carrier Autonomy X109. Maritime Autonomous Surface Ships and MASS Code
The integration of autonomous navigation aids on liquefied natural gas carriers, exemplified by the Avikus enabled transatlantic voyage.
LNG Carrier Conversion FSRU X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels
Modification of existing LNG carriers into FSRUs with onboard regasification.
LNG Carrier Loading Rate X56. LNG/LPG Carriers and IGC Code
Volumetric rate at which LNG is transferred during loading, typically 10,000 to 14,000 cubic meters per hour at modern export terminals.
LNG carrier MOSS X162. Naval Architecture, Stability, Resistance, and Structural Design
Spherical independent Type B tank design originated by Moss Maritime (Norway), recognizable by external aluminum spheres.
LNG Carrier Survey X43. Marine Surveying and Warranty Surveying
A specialist class and operational inspection of liquefied natural gas carriers covering containment, custody transfer, and IGC Code compliance.
LNG Carriers Yamalmax X133. Polar Research Vessels and Polar Code Regimes
Arc7 ice class LNG carriers serving Sabetta terminal, 15 in series.
LNG Dual-fuel X69. EGCS Scrubbers, SCR and Marine Air Emissions
Engine technology offering an alternative compliance pathway to scrubbers and SCR.
LNG ferry X24. Cruise, Passenger Ship and Ferry Operations
Ro-pax fueled by liquefied natural gas, examples include Color Hybrid and Honfleur projects.
LNG Freight Assessment X44. Shipping Indices, FFAs and Freight Markets
Baltic BLNG family of assessments covering steam, TFDE, and Mark III class liquefied natural gas carriers on key Atlantic and Pacific routes.
LNG Fuel D6. Decarbonization, emissions and alternative fuels
Liquefied natural gas used as ship fuel.
LNG Gemini X56. LNG/LPG Carriers and IGC Code
125,000 cubic meter LNG carrier involved in the 1979 cargo leak incident at Cove Point, Maryland, where vapor migration into an electrical substation led to a fatal explosion ashore.
LNG Heel X1. Cargo Science, Commodities and Cargo Care
Residual liquid kept on board to maintain tank temperature.
LNG import terminal X15. Ports, Terminals and Stevedoring
regasification facility, e.g., Isle of Grain, Sabine Pass, Dahej.
LNG Membrane Stress X96. Hull Integrity Monitoring and Strain Gauges
Strain in the metallic membrane of containment systems on LNG carriers under thermal and mechanical loads.
LNG Plant Module X104. Project Cargo Forwarders and Heavy Transport
Prefabricated process module for liquefied natural gas facilities, often above 5,000 tonnes.
LNG Re-Export Ban (EU 14th Package) X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes
A prohibition on transshipment of Russian LNG via EU terminals to third countries, effective with a wind-down period.
LNG Ready X20. LNG Operations and Custody Transfer
Class notation for vessels with structural and arrangement provisions to be converted to LNG dual-fuel.
LNG Specific Chapter X40. Tanker Vetting, SIRE and VIQ
VIQ Chapter 13 sub-section addressing LNG cargo systems on dedicated carriers.
LNG STS Transfer Guidelines X20. LNG Operations and Custody Transfer
SIGTTO publication covering ship-to-ship transfer of LNG between carriers and FSU/FSRU.
LNG Sub-Sea Pipeline X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines
Cryogenic submarine pipeline studied for cross-bay LNG transfer projects.
LNG tanker coating X165. Marine Coatings, Antifouling, and Hull Husbandry
Tank coatings for LNG carrier cargo containment systems differ from oil tankers and use stainless or invar membranes, not paint.
LNG terminal C4. Ports, terminals and coastal/marine civil engineering
Onshore or offshore LNG receiving or export terminal.
LNG Terminal Operating Manual X20. LNG Operations and Custody Transfer
Local procedures aligning IGC, IGF, SIGTTO, and OCIMF/ICS terminal practice.
LNG Tug X30. Tug Operations and Harbour Towage
Tug fueled by liquefied natural gas; Sembcorp Marine introduced an LNG harbor tug in 2022.
LNG, Polar Fuel X52. Polar Code, Arctic and Antarctic Shipping
Liquefied natural gas, the alternative fuel used by several recent Arctic icebreakers and the Yamal LNG carrier fleet.
LNG2023, LNG2025 X119. Maritime Conferences, Trade Shows and Awards
Triennial conference of the International Gas Union, with maritime LNG focus.
LNGBKR Terms X72. Bunkering Hubs and Bunker Suppliers
BIMCO standard LNG bunker supply contract first published in 2018.
LNGC X15. Ports, Terminals and Stevedoring
Liquefied Natural Gas Carrier.
LNGVOY 2005 X17. Chartering, Shipbroking and Freight Trading
BIMCO voyage charter party for liquefied natural gas.
LO/LO X6. Container, Intermodal and Trade Codes
Lift-on/lift-off vessel operation.
Loa X58. Shipbuilding Yards and Construction
Length overall, a key newbuild dimension governing dock and berth selection.
LOA length overall X162. Naval Architecture, Stability, Resistance, and Structural Design
Maximum length of the hull including bulwarks, stem, and stern extensions.
LOA Process X127. Maritime Security, Anti-Piracy and PMSCs
Letter of Authorization process by flag states approving specific PMSC contracts and weapons.
LOA waypoint B3. Nautical Science
Wheelover/initial-turn point.
Load X75. IMDG Code, Classes, Packing and Segregation
Quantity of dangerous goods placed in a CTU, regulated under IMDG and CTU Code.
Load Balancing X68. Maritime Satcom and Telecommunications
Distribution of traffic across multiple links based on policy and conditions.
Load Bank Test X67. Marine Electrical Systems and Shore Power
Performance test using a resistive or reactive load to verify generator output and PMS response.
Load case X42. Offshore Wind Installation and Cable Lay
Combination of environmental and operational actions evaluated in offshore wind structural design.
Load case, lashing X76. Stevedoring, Lashing and Cargo Securing
Defined combination of accelerations and external loads applied in a lashing calculation.
Load Cell X104. Project Cargo Forwarders and Heavy Transport
Sensor measuring force in a sling or jack during a critical lift.
Load Centre X83. ISO Container Manufacturing and Leasing
Designated lifting centre point of an offshore container for safe handling.
Load Combination Factor X54. Naval Architecture Software and IACS Rules
Coefficient combining individual load components in CSR-BC+OT direct strength analysis.
Load Density X1. Cargo Science, Commodities and Cargo Care
Allowable mass per square meter on tank top, deck, or container floor.
Load dependent cylinder lubrication X19. Engine Room Watchkeeping and UMS Operations
Control of cylinder oil feed rate proportional to load and fuel sulphur.
Load Dependent Start X67. Marine Electrical Systems and Shore Power
PMS function that starts a standby generator when load on running sets exceeds a threshold.
Load diagram X19. Engine Room Watchkeeping and UMS Operations
Engine operating envelope showing power and speed limits.
Load Distribution Beam X104. Project Cargo Forwarders and Heavy Transport
Beam under a project unit that spreads its weight to multiple trailer rows.
Load factor (tidal) X57. Ocean Energy Beyond Wind
Ratio of average to rated output for a tidal device, generally higher than wave but lower than baseload thermal.
Load line B1. Naval Architecture
Statutory waterline mark per ICLL 1966.
Load line (ice) X27. Polar Code, Ice Navigation and Polar Operations
Special load line considerations for ships operating in ice and at Polar Service Temperature.
Load Line Cargo Capacity X1. Cargo Science, Commodities and Cargo Care
Cargo allowable to seasonal load line.
Load Line Certificate X9. Cargo Securing, Lashing and Stability Vocabulary
Statutory certificate issued under Load Line Convention.
Load Line Convention X9. Cargo Securing, Lashing and Stability Vocabulary
ICLL 1966 as amended by 1988 Protocol and 2003 amendments.
Load Line Deficiency X146. Port State Control Regimes, MoUs, and Inspection Systems
A 03xxx finding involving freeboard markings, deck line, draft marks, or weathertight closures.
Load Line Length X125. Superyacht Industry, Builders and Brokers
Statutory length used for application of class rules, defined under ICLL 1966.
Load line markings X45. Marine Paints, Coatings and Antifouling
Painted marks whose contrast against hull paint is regulated by classification societies.
Load Line Survey X5. Marine Surveying and Inspection
Annual and renewal survey of conditions of assignment.
Load Line zones X7. Flag State, Port State Control and Detention Vocabulary
Geographic seasonal zones defined in the 1966 Load Lines Convention, governing freeboard assignment.
Load Lines Convention 1966 A4. Other IMO and ILO conventions and codes
International Convention on Load Lines, 1966, as amended by the 1988 Protocol.
Load list C3. Logistics, freight forwarding and multimodal trade
Container load list for a service or vessel.
Load on Previous Cargo X155. Marine Surveying Practice and Cargo Inspection
A hold condition standard allowing the new cargo to be loaded on residues of the previous compatible cargo, used for some homogeneous bulk shipments.
Load on quay deck C4. Ports, terminals and coastal/marine civil engineering
Design load including stacks, vehicles, and equipment.
Load on Top X155. Marine Surveying Practice and Cargo Inspection
A historical tanker practice of loading new crude oil over slops retained from previous cargoes, surveyed by independent inspectors to define quantities.
Load on Top (LOT) X1. Cargo Science, Commodities and Cargo Care
Tanker practice retaining slops at bottom of clean cargo.
Load profile B2. Marine Engineering
Distribution of engine load with time used for design.
Load sharing X19. Engine Room Watchkeeping and UMS Operations
Equal distribution of kW and kVAr among parallel generators.
Load Shedding X67. Marine Electrical Systems and Shore Power
Automatic disconnection of non-essential loads to prevent overload of running generators.
Load Test Certificate X5. Marine Surveying and Inspection
Document evidencing proof load on cranes and lifting gear.
Loaded Compartment X75. IMDG Code, Classes, Packing and Segregation
Cargo space where dangerous goods have been placed, recorded in the manifest.
Loaded Displacement X98. Ship Registries and Flag States
Total weight of a vessel when loaded to her summer load line.
Loadicator C1. Commercial shipping, chartering, economics and finance
Approved onboard cargo planning and stress calculation software.
Loadicator Check X5. Marine Surveying and Inspection
Verification of loading computer against approved test conditions.
Loadicator Clause X17. Chartering, Shipbroking and Freight Trading
Tanker clause requiring use of an approved stress and stability calculator.
Loadicator Verification X40. Tanker Vetting, SIRE and VIQ
The periodic verification of the loading computer against an approved set of test conditions, reviewed under VIQ Chapter 8.
Loading arms X56. LNG/LPG Carriers and IGC Code
Articulated rigid pipes at the terminal jetty used to connect to the ship manifold for cargo transfer.
Loading Computer X54. Naval Architecture Software and IACS Rules
Onboard software approved by class for stability and longitudinal strength monitoring, such as NAPA Loading Computer.
Loading Computer Approval X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA
The class-approved loading instrument certificate verified during SIRE cargo and ballast chapter checks.
Loading Computer Survey X43. Marine Surveying and Warranty Surveying
A verification of onboard loading computer software, sensors, and outputs against the approved trim and stability documentation.
Loading Manual X8. IACS, Class Rules and Class Notations
class-approved document defining permissible cargo and ballast distributions.
Loading Master X104. Project Cargo Forwarders and Heavy Transport
Person directing the loading and securing of cargo aboard a heavy lift vessel.
Loading Master Survey X43. Marine Surveying and Warranty Surveying
A liaison role at oil and gas terminals where a contracted loading master oversees cargo transfer in coordination with the ship's officers.
Loading Plan X75. IMDG Code, Classes, Packing and Segregation
Stowage plan that for dangerous goods must comply with IMDG stowage and segregation tables.
Loading Plan Review X5. Marine Surveying and Inspection
Surveyor review of cargo plan against stress and stability limits.
Loading Sequence Plan X104. Project Cargo Forwarders and Heavy Transport
Document setting the order and timing of each lift during vessel loading.
Loading Survey X43. Marine Surveying and Warranty Surveying
An attendance during cargo loading to monitor sequence, quantity, securing, and trim against approved loading manuals.
Loadline X6. Container, Intermodal and Trade Codes
Markings on vessel hull indicating maximum permissible draft.
Loadline Disc Datum X159. Marine Pilotage, Pilot Districts, and Pilots' Associations
Reference point not used for the 9 meter freeboard determination, which is taken from the waterline at the time of transfer.
Loadline reference X170. SOLAS 1974 Convention: Chapter-by-Chapter Glossary
Although the ICLL 1966 Convention is separate, SOLAS II-1/22 references freeboard for damage stability and bulkhead deck definitions.
Loadline Survey X155. Marine Surveying Practice and Cargo Inspection
A statutory inspection by a flag administration or recognized organization confirming compliance with the International Convention on Load Lines 1966 as amended.
LoadMaster X15. Ports, Terminals and Stevedoring
brand of crane load monitoring system.
Loadometer Test X5. Marine Surveying and Inspection
Functional verification of stress monitoring system.
Loadout X42. Offshore Wind Installation and Cable Lay
Movement of fabricated components from quay to vessel deck for transport offshore.
Loan to Value X49. Ship Finance, Leasing and Maritime Capital Markets
Ratio of outstanding loan amount to vessel market value.
Loan-to-Value (LTV) X29. Ship Sale and Purchase, Management Contracts and Valuation
Mortgage covenant ratio of debt to vessel market value.
Lobe Pump X63. Marine Auxiliary Machinery and Pumps
Positive displacement pump using two or more rotating lobes, used for sludge and viscous fluids.
Lobo Marinho X124. Dredging Industry and Reclamation Contractors
Madeiran ferry company benefiting from dredged port access.
Lobster (Frozen) X120. Marine Catering, Provisions and Ship Chandlers
IMPA 551144 premium frozen tail, special order item for officer mess.
Lobster Boat X87. Fishing Vessels and Fisheries Management
Small inshore vessel rigged with a hauler and bait tank for setting and retrieving lobster traps.
LOC Group X43. Marine Surveying and Warranty Surveying
London Offshore Consultants, a global marine and engineering consultancy specializing in marine warranty surveying for offshore construction, towage, and renewables.
Local Action Cell X100. Marine Cathodic Protection and Anodes
A microscopic corrosion cell within a single metal surface caused by compositional or microstructural inhomogeneity.
Local Agency Fee Tariff X86. Port Agency, Husbandry and Disbursement
Tariff of local agency fees published by national associations.
Local apparent noon (LAN) X16. Nautical Science, Navigation and COLREGs
Instant when the Sun is on the observer's meridian.
Local Area Network X48. Maritime Cybersecurity
Network within a defined area such as a bridge, engine control room, or vessel.
Local content X42. Offshore Wind Installation and Cable Lay
Share of project value executed by domestic suppliers, frequently a tender criterion in EU and US offshore wind auctions.
Local control panel (LCP) B2. Marine Engineering
Engine-mounted control and indication panel.
Local control stand X19. Engine Room Watchkeeping and UMS Operations
Manoeuvering platform at the engine with telegraph and starting controls.
Local Currency Disbursement X86. Port Agency, Husbandry and Disbursement
Statement of disbursement expressed in local currency.
Local Discharge Ban X69. EGCS Scrubbers, SCR and Marine Air Emissions
Port or coastal restriction on open-loop EGCS washwater discharge.
Local Hour Angle (LHA) B3. Nautical Science
Hour angle measured from observer's meridian.
Local knowledge X32. Marine Pilotage and Pilot Operations
Detailed pilot familiarity with hydrography, traffic, and aids in a pilotage area.
Local mean time (LMT) X16. Nautical Science, Navigation and COLREGs
Mean time at the observer's meridian.
Local Notice to Mariners X73. Marine Hydrography, Charting and ENC
NM issued by a port, regional authority, or coastguard for a defined area.
Local Operating Network X67. Marine Electrical Systems and Shore Power
LON fieldbus used on some marine power management installations.
Local Path Planner X109. Maritime Autonomous Surface Ships and MASS Code
The autonomy module that generates short range maneuvers to follow the global plan while avoiding immediate obstacles.
Local Pilotage Charge X86. Port Agency, Husbandry and Disbursement
Charge for pilotage within port limits.
Local Place of Refuge Process X167. Major Salvage Companies, Wreck Removals, and Equipment
Coastal state procedure for assessing requests to bring damaged or salvaged ships into sheltered waters.
Local Plotting Sheet X129. Hydrographic Offices, Survey Vessels and Marine Cartography
Hydrographic working chart at survey scale used in the field to plan and monitor coverage.
Local Port Tariff X86. Port Agency, Husbandry and Disbursement
Schedule of port dues and charges published by the port authority.
Local Tariff Update X86. Port Agency, Husbandry and Disbursement
Notice from the agent of changes in local tariff structure.
Local Time X80. Maritime Search and Rescue Coordination
Wall clock time at the search area, often referenced alongside UTC in case files.
Locator Beacon X80. Maritime Search and Rescue Coordination
Generic term for 406 MHz distress beacons.
Lock C4. Ports, terminals and coastal/marine civil engineering
Navigation lock raising or lowering vessels.
Lock and Dam X103. US Inland Waterway Towing and Barge
A combined navigation structure used to maintain navigable depth and pass vessels across the dam.
Lock and Dam 1 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock at St. Paul, Minnesota.
Lock and Dam 11 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock at Dubuque, Iowa.
Lock and Dam 14 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock at LeClaire, Iowa.
Lock and Dam 15 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock at Davenport, Iowa.
Lock and Dam 2 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock at Hastings, Minnesota.
Lock and Dam 22 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock in the Hannibal, Missouri area.
Lock and Dam 24 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock at Clarksville, Missouri.
Lock and Dam 25 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock at Winfield, Missouri.
Lock and Dam 26 X103. US Inland Waterway Towing and Barge
The former Upper Mississippi River structure replaced by the Melvin Price Locks and Dam at Alton, Illinois.
Lock and Dam 27 X103. US Inland Waterway Towing and Barge
The Mississippi River lock complex at the lower end of the Chain of Rocks Canal near St. Louis.
Lock and Dam 3 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock near Welch, Minnesota.
Lock and Dam 4 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock at Alma, Wisconsin.
Lock and Dam 5 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock near Minneiska, Minnesota.
Lock and Dam 5A X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock near Winona, Minnesota.
Lock and Dam 8 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock near Genoa, Wisconsin.
Lock and Dam 9 X103. US Inland Waterway Towing and Barge
The Upper Mississippi River lock near Lynxville, Wisconsin.
Lock Approach X103. US Inland Waterway Towing and Barge
The reach of river immediately upstream or downstream of a lock used for queueing.
Lock Chamber X33. Inland Navigation and Barge Operations
Enclosed basin of a lock between gates.
Lock chamber (tidal range) X57. Ocean Energy Beyond Wind
Navigation facility at tidal barrages such as La Rance that allows ship transit through the impoundment.
Lock Fee X33. Inland Navigation and Barge Operations
Charge levied for transit of a lock by certain authorities.
Lock Fill Basin X33. Inland Navigation and Barge Operations
Side reservoir used to reduce water consumption during lockages.
Lock Gates X103. US Inland Waterway Towing and Barge
The miter, sector or tainter gates that close the chamber for lockage.
Lock Master X103. US Inland Waterway Towing and Barge
The USACE employee in charge of operating a lock.
Lock Queue X103. US Inland Waterway Towing and Barge
The sequence of tows awaiting lockage at a given structure.
Lock Wall X103. US Inland Waterway Towing and Barge
The concrete or stone wall forming the side of a lock chamber.
Lock-and-key (CPP) X38. Propellers, Stern Gear and Shaft Lines
Failsafe locking system fixing CPP blade angle if hydraulic control is lost.
Lock-out / lock-in (icebreaker) X27. Polar Code, Ice Navigation and Polar Operations
Status of a ship beset in pack ice unable to proceed independently.
Lock-out chamber X77. Naval Mine Warfare and Mine Countermeasures
A submarine compartment that allows clearance divers to deploy without surfacing the vessel.
Lockage X103. US Inland Waterway Towing and Barge
A single passage of a vessel or tow through a lock.
LockBit X25. Maritime Cybersecurity, OT and IT
Ransomware as a service group active from 2019, disrupted by Operation Cronos in February 2024.
LockBit 3.0 X139. Maritime Cybersecurity, OT Threats and Standards
Ransomware variant responsible for the July 2023 Port of Nagoya attack and numerous shipping logistics intrusions.
Locker (Bonded) X120. Marine Catering, Provisions and Ship Chandlers
Sealed store for spirits and tobacco, inventory recorded in master's bond book.
Locker Sounding Pipe X173. Mooring, Anchoring, OCIMF MEG4, and Equipment Numeral
Pipe used to measure water accumulation in the chain locker so that bilge alarms can be calibrated.
Lockheed Cyber Kill Chain X148. Maritime Cybersecurity, IACS Cyber Rules, and Incidents
A mental model occasionally applied to maritime intrusion analysis, though more commonly the MITRE ATT&CK ICS matrix is used.
Lockheed Martin X55. Marine Simulators, Training and Maritime Academies
U.S. defense contractor that has supplied bridge, navigation, and combat-system simulators to the U.S. Navy and allied services.
Lockheed Martin A2100 X68. Maritime Satcom and Telecommunications
Satellite bus used for some maritime-relevant geostationary platforms.
Lockheed Martin RMMV X77. Naval Mine Warfare and Mine Countermeasures
The Remote Multi-Mission Vehicle, a semi-submersible unmanned tow body designed to deploy the AN/AQS-20A sonar for LCS minehunting.
Lockheed P-8 X80. Maritime Search and Rescue Coordination
Boeing P-8A Poseidon maritime patrol aircraft used by several navies for SAR support.
Lockin X82. Saturation Diving and Offshore Diving Operations
Re-entry of the diver into the bell from the water.
Lockmaster X166. Inland Waterways, Ferries, RoRo, and Short Sea Shipping
The US Army Corps of Engineers official in charge of operating a specific lock-and-dam facility.
Lockout X82. Saturation Diving and Offshore Diving Operations
Transfer of a diver from the bell into the water at pressure.
Lockout tagout X19. Engine Room Watchkeeping and UMS Operations
Energy isolation procedure controlling work on machinery.
Lockout Tagout, Yard X50. Ship Recycling, Demolition and Hong Kong Convention
The yard energy isolation system applied to electrical and mechanical systems before dismantling.
Lockout-Tagout LOTO X28. Ship Recycling and End-of-Life
Energy isolation procedure for electrical and hydraulic systems during cutting.
Lockport Yard X113. Drydock and Ship Repair Yards
Bollinger Shipyards headquarters yard at Lockport, Louisiana, with floating drydock and marine railway.
Lockton X108. Marine Insurance and P&I Clubs
An international insurance broker active in marine, hull, and P&I placements.
Lockton Marine X157. Marine Loss Adjusters, GA Practice, and Casualty Firms
Marine practice of Lockton Companies, an employee-owned global insurance broker.
Lodbrog X122. Submarine Cable Laying, Repair Vessels and Operators
Orange Marine cable ship, 91 m LOA, built 1976 in Le Havre and one of the longest-serving operational cable ships, retired in 2024.
Lodestar Marine X145. P&I Clubs, War Risk Insurers, and Marine Insurance Markets
Fixed-premium P&I provider for small craft.
LOF 1892 X99. Marine Salvage Awards and SCOPIC
First standardized Lloyd's Open Form, introducing the no cure, no pay principle in a uniform contract.
LOF 1908 X60. Marine Salvage and Wreck Removal
Early standardized edition of the Lloyd's Open Form salvage agreement.
LOF 1924 X99. Marine Salvage Awards and SCOPIC
Revised Lloyd's Open Form reflecting changes in salvage practice.
LOF 1934 X99. Marine Salvage Awards and SCOPIC
Revision of the Lloyd's Open Form widely used through the mid-twentieth century.
LOF 1972 X99. Marine Salvage Awards and SCOPIC
Lloyd's Open Form revised to address modern arbitration and security practice.
LOF 1980 X99. Marine Salvage Awards and SCOPIC
First Lloyd's Open Form to introduce the safety net provision for environmental salvage following the Amoco Cadiz incident.
LOF 1990 X60. Marine Salvage and Wreck Removal
Edition introducing safety net protections for environmental salvors.
LOF 1995 X60. Marine Salvage and Wreck Removal
Edition incorporating refinements to special compensation procedures.
LOF 2000 X13. Marine Salvage and Wreck Removal
Edition incorporating Article 14 and SCOPIC by reference.
LOF 2011 X13. Marine Salvage and Wreck Removal
Edition with simplified arbitration and FIXED COST clauses.
LOF 2020 X13. Marine Salvage and Wreck Removal
Current Lloyd's Open Form with updated SCOPIC 2020 and digital signature.
LOF 2020 Box X167. Major Salvage Companies, Wreck Removals, and Equipment
Optional fillable area in the LOF 2020 form allowing parties to record a fixed price or settlement option upfront.
LOF agreement X12. Maritime Casualties and Investigation
Lloyd's Open Form salvage contract, often invoked in major casualties.
LOF No Cure No Pay X141. Marine Salvage Industry and Wreck Removal Contractors
Bedrock principle that salvor earns nothing unless salvage succeeds in whole or part.
LOF Notice X60. Marine Salvage and Wreck Removal
Notice provided to Lloyd's that a salvage operation has commenced under LOF.
LOF Statistics X99. Marine Salvage Awards and SCOPIC
Annual data published by Lloyd's on LOF cases, SCOPIC invocations, and awards.
LOF Survey X155. Marine Surveying Practice and Cargo Inspection
A surveyor attendance under Lloyd's Open Form salvage where the SCOPIC clause or the salved fund requires recording of values and condition.
Lofoten X85. Ferries, Ro-Pax Operators and Routes
Hurtigruten ro-pax built 1964 long deployed on the Norwegian Coastal Express and listed as a Norwegian Heritage Vessel.
Log X3. Ship Handling, Seamanship and Deck Vocabulary
Instrument measuring speed and distance run; daily journal.
Log (ship's) X16. Nautical Science, Navigation and COLREGs
Record of navigational events; or instrument for measuring speed/distance.
Log Aggregation X25. Maritime Cybersecurity, OT and IT
Centralized collection of logs for analysis, foundation of SIEM.
Log Reduction X41. Cruise Ship Public Health and VSP/USPH
Order-of-magnitude decrease in microbial population, the metric for disinfection efficacy verification.
Log4Shell X25. Maritime Cybersecurity, OT and IT
See CVE-2021-44228.
Log4Shell (CVE-2021-44228) X139. Maritime Cybersecurity, OT Threats and Standards
Apache Log4j RCE that triggered urgent fleet patching of shore and shipboard Java applications in December 2021.
Logbook (Master) B3. Nautical Science
Master's official log per SOLAS V/28.
Logbook Audit X5. Marine Surveying and Inspection
Review of deck, engine, oil record, and garbage logs.
Logger placement X26. Reefer Containers and Cold Chain Logistics
Sensor position inside cargo or air stream specified by USDA cold-treatment and pharma protocols.
Loggerhead turtle X10. Marine Biology, Fisheries and Oceanography
*Caretta caretta*, a temperate and tropical sea turtle.
Logging X48. Maritime Cybersecurity
Recording of system events for monitoring, troubleshooting, and forensics.
Logical Segmentation X107. Maritime Cybersecurity and OT Security
Separation of network traffic using VLANs or software policies rather than physical isolation.
Logipharma Annual Conference X119. Maritime Conferences, Trade Shows and Awards
Pharmaceutical logistics gathering with cold chain shipping focus, held in Montreux.
Logistic Vessel X14. Offshore Oil and Gas Marine Operations
General supply unit, see PSV.
Logistics Coordination X86. Port Agency, Husbandry and Disbursement
Coordination of crew, spares, and stores logistics by the agent.
Logistics Depot X83. ISO Container Manufacturing and Leasing
Combined storage, repair, and stuffing depot for container traffic.
Logistics Flight X31. Helicopter Operations on Ships
Routine transport rotation moving crew, mail, or cargo to and from offshore site.
Logistics University of Hong Kong Maritime X121. Maritime Education, Academies and Universities
Vocational provider for shipping logistics certificates.
LogProject Network (LPN) X104. Project Cargo Forwarders and Heavy Transport
Independent project forwarder cooperation network.
LogRhythm X107. Maritime Cybersecurity and OT Security
Security information and event management platform.
Logs, Deck Cargo X1. Cargo Science, Commodities and Cargo Care
Carried under IMO Timber Code with rigorous lashing.
LOHC X140. Ammonia as Marine Fuel and Hydrogen Shipping
Liquid Organic Hydrogen Carrier, including methylcyclohexane, dibenzyltoluene, and N-ethylcarbazole.
LOHC (Liquid Organic Hydrogen Carrier) X34. Decarbonization, Alternative Fuels and Carbon Pricing
Compounds such as dibenzyltoluene used to transport hydrogen.
LOI (Letter of Indemnity) X17. Chartering, Shipbroking and Freight Trading
Indemnity issued to the carrier for actions such as delivery without original bills of lading.
Loire X33. Inland Navigation and Barge Operations
French river with limited commercial navigation, partly canalized.