Glossary

Maritime glossary, terms beginning with B (page 7)

All maritime glossary terms that begin with the letter B, drawn from every subject section. 2894 entries.

Showing 250 of 2894 terms (page 7 of 12).

Blending on board X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Mixing two fuels in ship tanks, generally discouraged due to stability risk.
Blending plant X61. Marine Lubricants and Cylinder Oils: Facility where base oils and additive packages are combined to produce finished marine lubricants for bunker supply.
Blending ratio X2. Marine Bunker Fuels, Lubricants and Bunkering Operations: Volumetric proportion of distillate to residual used to achieve a target viscosity or sulphur content.
Blending Ratio Calculation X115. Marine Bunker and Cargo Surveying: Volumetric or mass calculation of component proportions when residual and distillate or biofuel components are combined for a bunker stem.
BLG Sub-Committee A1. The IMO and the international regulatory framework: Former Sub-Committee on Bulk Liquids and Gases, restructured in 2013 into PPR and CCC.
BLH Nobel X96. Hull Integrity Monitoring and Strain Gauges: Force and weighing instrumentation brand with a heritage in load cells and strain-based measurement, part of the VPG group.
Bligh Reef X10. Marine Biology, Fisheries and Oceanography: Marine feature in Prince William Sound where Exxon Valdez ran aground in 1989.
Bligh, William F2. Maritime Culture, Heritage, Archaeology, Art and Museums: Captain of HMS Bounty, central to literary and dramatic depictions.
Blind Sample X115. Marine Bunker and Cargo Surveying: Sealed sample whose identity is withheld from the testing laboratory to ensure unbiased analytical results.
Blistering X5. Marine Surveying and Inspection: Coating defect with localized swelling; recorded during ballast tank inspections.
BLNG1 X161. Shipbroking, Freight Derivatives, and Baltic Indices: Baltic LNG route Ras Laffan to Gladstone benchmarking Australia to Asia long-haul economics.
BLNG2 X161. Shipbroking, Freight Derivatives, and Baltic Indices: Baltic LNG route Sabine Pass to Gate terminal Rotterdam benchmarking US Atlantic to Northwest Europe.
BLNG3 X161. Shipbroking, Freight Derivatives, and Baltic Indices: Baltic LNG route Sabine Pass to Futtsu benchmarking US Atlantic to Japan via Panama Canal.
Block X3. Ship Handling, Seamanship and Deck Vocabulary: Pulley used with rope to make a tackle.
Block and Tackle X104. Project Cargo Forwarders and Heavy Transport: Multi-sheave rigging arrangement that multiplies pulling force for project lifts.
Block Cipher X107. Maritime Cybersecurity and OT Security: Symmetric algorithm operating on fixed size blocks of plaintext, such as AES.
Block coat X165. Marine Coatings, Antifouling, and Hull Husbandry: A coating system applied to pre-fabricated ship blocks prior to erection, typically including shop primer and ballast tank epoxy.
Block coating X45. Marine Paints, Coatings and Antifouling: Application of coatings to hull and superstructure blocks during pre-erection in a shipyard.
Block Coefficient X54. Naval Architecture Software and IACS Rules: Ratio of displaced volume to the product of length, beam, and draft, a key input to empirical resistance methods.
Block coefficient (CB) B1. Naval Architecture: Ratio of displaced volume to L*B*T.
Block coefficient (ice) X27. Polar Code, Ice Navigation and Polar Operations: Relevant to icebreaking resistance and hull form design for polar service.
Block Coefficient Effect X28. Ship Recycling and End-of-Life: Hull form parameter influencing the LDT estimate used in demolition pricing.
Block coefficient verification (sea trial) B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Light-condition draft survey.
Block construction X58. Shipbuilding Yards and Construction: Modular shipbuilding method in which the hull is fabricated as discrete blocks joined in the dock.
Block erection X58. Shipbuilding Yards and Construction: Stage of joining preassembled blocks into the complete hull within a building dock.
Block erection schedule B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Master plan for joining hull blocks.
Block Island X42. Offshore Wind Installation and Cable Lay: First US offshore wind farm, a 30 MW jacket-founded project off Rhode Island commissioned in 2016 by Deepwater Wind.
Block Island Wind Farm X105. Offshore Wind Farm Installation and Vessels: First US offshore wind farm, a 30 MW project off Rhode Island developed by Deepwater Wind and commissioned in 2016.
Block joint X58. Shipbuilding Yards and Construction: Welded seam between two blocks, designed with adequate root opening and access for inspection.
Block Lifting X118. Ship Recycling Yards, Beaches and Regulation: Removal of pre-cut hull sections by crawler crane to a secondary cutting area on the impermeable floor, central to landing-method yards.
Block list X71. Shipbrokers and Brokerage Firms: Roster of counterparties a principal will not deal with, maintained discreetly by brokers.
Block Search X80. Maritime Search and Rescue Coordination: Search pattern subdividing an area into rectangular blocks assigned to multiple SRUs.
Block storage area X58. Shipbuilding Yards and Construction: Open hardstand where completed blocks await transport to the building dock.
Block stow X6. Container, Intermodal and Trade Codes: Loading containers of one destination together to speed discharge.
Block stowage C1. Commercial shipping, chartering, economics and finance: Carrying cargo of one shipper or destination in a contiguous block.
Block Trade X44. Shipping Indices, FFAs and Freight Markets: Privately negotiated FFA transaction reported to a clearing house for novation, subject to minimum size and time stamping rules.
Block train X6. Container, Intermodal and Trade Codes: Dedicated unit train moving containers between two terminals without intermediate switching.
Block Up Converter X68. Maritime Satcom and Telecommunications: See BUC.
Block Valve Station X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: Above-ground or subsea facility on a pipeline allowing isolation of a segment for maintenance or emergency shutdown.
Block weight X58. Shipbuilding Yards and Construction: Combined steel and outfitting mass of a block, governing crane lift capacity and transport equipment selection.
Block-and-Tackle Rig X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Old method of hoisting a pilot ladder, replaced by the requirement for ladders to be secured at deck level.
Block-cutting X147. Ship Recycling, Hong Kong Convention, and Recycling Yards: The secondary phase of dismantling where pre-cut hull sections are reduced to manageable steel plates ashore.
Block-work quay X175. Port Engineering, Dredging, Breakwaters, and Quays: Gravity quay wall built from stacked precast concrete blocks bedded on a prepared rubble foundation.
Blockade E2. Naval, defence and maritime law enforcement: Belligerent measure preventing ingress/egress of an enemy coast; requires effectiveness and notification.
Blockchain Bill of Lading E3. Technology, digitalization and smart shipping: Tokenized eBL on distributed ledger.
Blocked Person X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: Any person whose property is blocked under U.S. sanctions, including SDNs and entities owned 50 percent or more by SDNs.
Blocked Property X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: Any asset of a Blocked Person within U.S. jurisdiction or in the possession of a U.S. person, which must be frozen and reported to OFAC.
Blocked stowage X26. Reefer Containers and Cold Chain Logistics: Reefer cargo loaded tight against bulkheads, restricting air circulation; cause of hot spots.
Blocking X9. Cargo Securing, Lashing and Stability Vocabulary: Use of timber, steel or other material to prevent cargo movement.
Blocking and Trapping X53. Marine Insurance, P&I and Hull Clauses: A war risks peril covering loss of earnings or detention of a vessel prevented from leaving a port by hostile action.
Blocking Capacitor X91. Submarines and Submarine Cable Systems: Component in submarine cable Power Feed Equipment that prevents low-frequency current intrusion.
Blocking Sanctions X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes: Comprehensive U.S. measures that freeze all property and prohibit all transactions, as distinct from sectoral or list-based restrictions.
Blocking Statute E1. Maritime security, geopolitics and risk: EU Regulation 2271/96 protecting EU operators from extraterritorial US sanctions.
Blocklist X48. Maritime Cybersecurity: Set of network addresses, domains, or files denied by a shipboard security control.
Blohm+Voss X35. Yacht and Superyacht Industry: Hamburg shipyard with a long history of superyacht builds including Eclipse.
Blood glucose monitor (glucometer) X36. Shipboard Medical, Telemedicine and Seafarer Health: Capillary glucose testing device for suspected diabetes or hypoglycemia.
Blood pressure cuff X36. Shipboard Medical, Telemedicine and Seafarer Health: Manual aneroid or digital sphygmomanometer carried in all categories.
Bloom X10. Marine Biology, Fisheries and Oceanography: Rapid increase in plankton biomass, especially of phytoplankton.
Bloom Energy SOFC X140. Ammonia as Marine Fuel and Hydrogen Shipping: Solid-oxide fuel cell tested by Samsung Heavy on a 300 kW ammonia-fed shipboard genset.
Blow by X19. Engine Room Watchkeeping and UMS Operations: Combustion gas leakage past piston rings into the crankcase, detected by oil mist or pressure rise.
Blow Down X20. LNG Operations and Custody Transfer: Controlled depressurization of cargo or fuel gas piping to the vent mast or GCU.
Blow down valve X19. Engine Room Watchkeeping and UMS Operations: Boiler valve discharging concentrated water to control total dissolved solids.
Blowdown X63. Marine Auxiliary Machinery and Pumps: Removal of concentrated boiler water to control TDS, performed as bottom or surface blowdown.
Blowdown Bottom X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: Boiler discharge procedure removing sludge from the lowest mud drum or shell, typically performed at the start of each watch.
Blowdown Surface X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: Continuous or intermittent skimming of boiler water at the working level to control total dissolved solids and chloride concentration.
Blower (Boiler) X63. Marine Auxiliary Machinery and Pumps: Forced draft fan supplying combustion air to oil-fired auxiliary boilers.
Blower Hatch Cover X1. Cargo Science, Commodities and Cargo Care: Hatch with built-in trunked ventilation outlets.
Blower Side Cleaning X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring: Turbocharger compressor wheel water washing carried out during operation by injecting fresh water at the air intake to remove fouling deposits.
Blowing Down X50. Ship Recycling, Demolition and Hong Kong Convention: The sequenced depressurization of boilers, steam systems, and pressure vessels prior to cutting, mandated under the Ship Recycling Plan.
Blowing Tanks X91. Submarines and Submarine Cable Systems: Procedure of expelling water from ballast tanks with compressed air to surface a submarine.
Blowout X14. Offshore Oil and Gas Marine Operations: Uncontrolled release of formation fluids from a well.
BLPG1 X161. Shipbroking, Freight Derivatives, and Baltic Indices: Baltic VLGC route Ras Tanura to Chiba benchmarking Middle East to Japan LPG long-haul.
BLPG2 X161. Shipbroking, Freight Derivatives, and Baltic Indices: Baltic VLGC route Houston to Flushing benchmarking US Gulf to Northwest Europe LPG arbitrage.
BLPG3 X161. Shipbroking, Freight Derivatives, and Baltic Indices: Baltic VLGC route Houston to Chiba benchmarking US to Far East LPG long-haul.
BLU Code (Bulk Loading/Unloading) X170. SOLAS 1974 Convention: Chapter-by-Chapter Glossary: MSC.71(69) Code of Practice for the Safe Loading and Unloading of Bulk Carriers, recommendatory under SOLAS VI/7.
Bludworth Coupler X79. Tugs and Towage Industry: US-designed articulated tug barge coupling system using a pin engaging notches in the barge.
Blue Ammonia D6. Decarbonization, emissions and alternative fuels: Ammonia produced from natural gas with CCS.
Blue Anchor X15. Ports, Terminals and Stevedoring: PSA/Hutchison-style berth scheduling protocol used in some Asian ports.
Blue Asbestos X28. Ship Recycling and End-of-Life: Crocidolite, the most hazardous asbestos type historically used in marine insulation.
Blue Board X33. Inland Navigation and Barge Operations: Inland navigation signal board displayed on the starboard side to indicate non-standard passing arrangement.
Blue Bond D4. Fisheries, aquaculture, blue economy and marine resources: Debt instrument financing ocean conservation and sustainable use.
Blue Carbon D3. Marine environmental science, pollution and conservation: Carbon stored in coastal ecosystems such as mangroves, seagrass, and saltmarsh.
Blue Card X4. Marine Insurance, P&I and Claims: certificate issued by a P&I club evidencing insurance for liabilities under CLC 1992, Bunker Convention 2001, Wreck Removal Convention 2007, or Athens 2002.
Blue Card (P&I) X154. Maritime Welfare, Seafarer Charities, and MLC Rights: Certificate issued by a P&I club evidencing the financial security required by MLC 2014 amendments for abandonment cover.
Blue Cone X33. Inland Navigation and Barge Operations: ADN signal of one, two, or three blue cones indicating the dangerous goods hazard class carried.
Blue Economy D4. Fisheries, aquaculture, blue economy and marine resources: Sustainable use of ocean resources for economic growth.
Blue Economy Data Platform E3. Technology, digitalization and smart shipping: Multi-source maritime data integration.
Blue Economy Summit X119. Maritime Conferences, Trade Shows and Awards: Annual cross-sector conference on ocean industries hosted by various governments since 2014.
Blue Food D4. Fisheries, aquaculture, blue economy and marine resources: Food from aquatic systems, including fisheries and aquaculture.
Blue Hydrogen D6. Decarbonization, emissions and alternative fuels: Hydrogen from fossil sources combined with carbon capture and storage.
Blue Label (Class 4.3) X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers: The Class 4.3 hazard label depicting a flame on a blue background, indicating substances dangerous when wet that emit flammable gases on contact with water.
Blue marlin X10. Marine Biology, Fisheries and Oceanography: *Makaira nigricans*, a large pelagic billfish.
Blue methanol X34. Decarbonization, Alternative Fuels and Carbon Pricing: Methanol from natural gas with CCS on the production process.
Blue mussel X10. Marine Biology, Fisheries and Oceanography: *Mytilus edulis*, a widely farmed temperate bivalve.
Blue Ridge class X11. Naval Vessels, Warship Systems and Naval Architecture: USN amphibious command ship LCC-19 and LCC-20.
Blue shark X10. Marine Biology, Fisheries and Oceanography: *Prionace glauca*, an oceanic pelagic shark.
Blue smoke X19. Engine Room Watchkeeping and UMS Operations: Exhaust indication of lube oil burning, often from worn rings or valve stems.
Blue Star Ferries X85. Ferries, Ro-Pax Operators and Routes: Attica Group brand operating Aegean services to the Cyclades, Dodecanese, and Crete from Piraeus.
Blue Star Naxos X85. Ferries, Ro-Pax Operators and Routes: Blue Star Ferries ro-pax built 2002 deployed on Cyclades routes.
Blue Star Paros X85. Ferries, Ro-Pax Operators and Routes: Blue Star Ferries ro-pax built 2002 deployed on Cyclades routes.
Blue Star Patmos X85. Ferries, Ro-Pax Operators and Routes: Blue Star Ferries ro-pax built 2012 deployed on Dodecanese routes.
Blue Stream X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: 1,213 km natural gas pipeline across the Black Sea from Russia to Turkey, commissioned in 2003.
Blue Team X107. Maritime Cybersecurity and OT Security: Internal defensive group responsible for protecting and monitoring systems against attack.
Blue Tern X42. Offshore Wind Installation and Cable Lay: Cadeler X-class wind turbine installation vessel, originally part of the Swire Blue Ocean fleet.
Blue Water Navy E2. Naval, defence and maritime law enforcement: Force capable of sustained global ocean operations.
Blue Water Yachting X125. Superyacht Industry, Builders and Brokers: Antibes based crew agency and yacht management firm.
Blue whale X10. Marine Biology, Fisheries and Oceanography: *Balaenoptera musculus*, the largest animal on Earth.
Blue Whiting X87. Fishing Vessels and Fisheries Management: Micromesistius poutassou, a pelagic gadid targeted by Faroese, Norwegian, Russian, and EU midwater trawlers.
Blue Whiting (Micromesistius poutassou) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Pelagic gadid fished by Faroese, Norwegian, Russian, Icelandic and EU vessels, principally for fishmeal and fish oil with a 2024 TAC of 1.529 million tonnes.
Blue X X57. Ocean Energy Beyond Wind: Half-scale wave energy converter built by Mocean Energy and tested at EMEC in Orkney.
Blue-green algae fouling B2. Marine Engineering: Biofouling concern in seawater cooling systems.
BlueAngel X34. Decarbonization, Alternative Fuels and Carbon Pricing: German voluntary environmental label including a ship-design sub-scheme.
Blueberry carriage X26. Reefer Containers and Cold Chain Logistics: 0 C, 90 to 95% RH, MA packaging 5 to 10% CO2 inhibits Botrytis.
BlueBorne X25. Maritime Cybersecurity, OT and IT: 2017 set of eight Bluetooth vulnerabilities affecting Android, Linux, Windows and iOS devices.
BlueBriefs X28. Ship Recycling and End-of-Life: Market intelligence service publishing demolition prices and recycling activity reports.
BlueDrive PlusC X67. Marine Electrical Systems and Shore Power: Diesel-electric and hybrid propulsion product family from Siemens Energy Marine.
Bluefin Catch Document (BCD) X87. Fishing Vessels and Fisheries Management: ICCAT and CCSBT trade tracking document accompanying bluefin tuna from harvest to market.
Bluefin tuna X10. Marine Biology, Fisheries and Oceanography: Common name for three species (Atlantic, Pacific, southern) of large *Thunnus*.
Bluefin Tuna Ranching X131. Commercial Fisheries, Trawler Fleets and Seafood Processors: Capture of juvenile bluefin tuna in purse seines and grow-out in offshore cages, practiced in the Mediterranean, Mexico and Australia.
Bluefin-12 X65. ROVs, AUVs, USVs and Marine Robotics: Mid-size AUV from Bluefin Robotics with modular payload bays for survey and defense missions.
Bluefin-21 X65. ROVs, AUVs, USVs and Marine Robotics: Heavy AUV from Bluefin Robotics rated to 4,500 m, notable for use in the 2014 MH370 search.
Bluefin-9 X65. ROVs, AUVs, USVs and Marine Robotics: Compact lightweight AUV from Bluefin Robotics, now General Dynamics Mission Systems, used for shallow survey and search.
BlueKeep (CVE-2019-0708) X139. Maritime Cybersecurity, OT Threats and Standards: RDP vulnerability that prompted urgent patching of bridge and ECR Windows assets fleet-wide.
Bluenose X39. Pre-1900 Maritime History: Canadian fishing and racing schooner launched at Lunenburg in 1921 (terminus of the working-schooner tradition).
Bluenose II X128. Sail Training Ships and Tall Ship Associations: Canadian gaff rigged knockabout schooner launched 1963 in Lunenburg Nova Scotia as a replica of the 1921 Bluenose, 49 m sparred length, provincial sail training and ambassador vessel.
BlueOS X73. Marine Hydrography, Charting and ENC: Open-source ROV operating system used in small-platform hydrographic surveys.
BlueRobotics X65. ROVs, AUVs, USVs and Marine Robotics: California manufacturer of low-cost thrusters, electronics and the BlueROV2 vehicle widely used in academic and small commercial work.
BlueROV2 X65. ROVs, AUVs, USVs and Marine Robotics: Small open-architecture electric observation ROV from BlueRobotics offered in heavy and standard configurations.
BlueScope Steel X92. Marine Steel Suppliers and Shipbuilding Plate: Australian flat steel producer operating the Port Kembla Steelworks in New South Wales.
BlueVault X67. Marine Electrical Systems and Shore Power: Lithium-ion battery storage system from Siemens Energy used on hybrid ferries and offshore vessels.
BlueVoyant Maritime X74. AIS Data, Vessel Tracking and Maritime Intelligence: Cyber and supply chain risk service that incorporates vessel tracking signals into compliance workflows.
Bluewater X153. Offshore Drilling Rigs, FPSOs, and Offshore Vessels: Netherlands-based FPSO contractor operating units such as Aoka Mizu, Glas Dowr, and Bleo Holm.
Bluewater Cruising F4. Recreational Boating, Yachting and Sport: Long-distance ocean cruising under sail or power.
Bluewater Energy Services X81. Project Cargo, Heavy-Lift and Module Carriers: Hoofddorp-based FPSO and SPM operator.
Bluewater Yachting X35. Yacht and Superyacht Industry: Antibes-based charter, brokerage, crew training, and management group.
Bluewater Yachts X125. Superyacht Industry, Builders and Brokers: Antibes headquartered brokerage and crew training school.
BlueWaters X46. Container Terminal Operations: A maritime software vendor producing stowage planning, ship operations, and terminal interface products used by container lines.
BlueWeek X119. Maritime Conferences, Trade Shows and Awards: Annual sustainable shipping forum hosted by the European Commission, paired with European Maritime Day.
BMD X11. Naval Vessels, Warship Systems and Naval Architecture: Ballistic missile defense.
BMP Asia X127. Maritime Security, Anti-Piracy and PMSCs: Regional Guide to Counter Piracy and Armed Robbery against Ships in Asia, published by ReCAAP ISC, fifth edition 2022.
BMP East Africa E1. Maritime security, geopolitics and risk: Earlier BMP edition focused on Somali piracy region.
BMP West Africa E1. Maritime security, geopolitics and risk: Guidance tailored to Gulf of Guinea threat profile.
BMP4 X22. Piracy, Maritime Security and Armed Protection: Best Management Practices Version 4, published August 2011, focused on Somalia based piracy.
BMP5 X22. Piracy, Maritime Security and Armed Protection: Best Management Practices Version 5, published June 2018, replacing BMP4 and covering the wider Indian Ocean.
BMPH X15. Ports, Terminals and Stevedoring: Berth Moves Per Hour, productivity metric across all cranes working a vessel.
BMS Ballast Water Management System X25. Maritime Cybersecurity, OT and IT: See BWMS.
BMT X74. AIS Data, Vessel Tracking and Maritime Intelligence: UK maritime consultancy whose REMBRANDT and SMART ship-tracking simulators use AIS data.
BMT Group X54. Naval Architecture Software and IACS Rules: UK maritime engineering consultancy whose REMBRANDT simulator and SeaSafe tools are used in naval architecture.
BMT Nigel Gee X35. Yacht and Superyacht Industry: UK naval architecture practice (now part of BMT) active in large yacht design.
BMT Salvage X43. Marine Surveying and Warranty Surveying: The casualty response and salvage consultancy arm of the BMT Group, providing naval architects and surveyors to LOF and SCOPIC operations.
BMW Oracle Racing X84. Yacht Racing, Regattas and Sailing Governance: The American syndicate, backed by Larry Ellison, that won the 33rd America's Cup in 2010 in Valencia.
BN X19. Engine Room Watchkeeping and UMS Operations: Base number of lube oil expressed in mg KOH per gram, monitored by drip test or laboratory.
BN depletion X61. Marine Lubricants and Cylinder Oils: Reduction of Base Number in service as alkaline additives are consumed by acid neutralization and oil drainage.
BN reserve X61. Marine Lubricants and Cylinder Oils: Remaining Base Number in a used cylinder oil sample relative to the fresh oil specification.
BNP Paribas X49. Ship Finance, Leasing and Maritime Capital Markets: French bank with a global shipping finance platform serving major international owners.
BNWAS X89. ECDIS and Bridge Equipment Makers: Bridge Navigational Watch Alarm System, mandated by SOLAS V/19.2.2.3 and specified by IMO Resolution MSC.128(75), alerting backup officers if the watchkeeper becomes incapacitated.
BNWAS (Bridge Navigational Watch Alarm System) X139. Maritime Cybersecurity, OT Threats and Standards: Required by SOLAS V/19.2.2.3, a watchkeeping monitor whose alarm logic is a candidate target for tampering.
BNWAS Stage 1 X168. Bridge Electronics: Radar, ECDIS, GMDSS, and IBS: Initial visual indication on the bridge approximately every 3 to 12 minutes of inactivity.
BNWAS Stage 2 X168. Bridge Electronics: Radar, ECDIS, GMDSS, and IBS: Audible alarm on the bridge after a further 15 seconds without reset.
BNWAS Stage 3 X168. Bridge Electronics: Radar, ECDIS, GMDSS, and IBS: Escalation alarm to backup officers and master after a further 90 seconds without reset.
BOA X59. Offshore Wind O&M, CTVs and SOVs: Basic O&M agreement, a Vestas service contract tier limiting the manufacturer's scope to scheduled maintenance and selected unscheduled work.
BOA Offshore X72. Bunkering Hubs and Bunker Suppliers: Norwegian operator of small bunker barges in the North Sea decommissioning support trade.
Boa Sub-C X59. Offshore Wind O&M, CTVs and SOVs: Norwegian subsea contractor operating cable lay and repair vessels chartered into the offshore wind sector.
Board of inquiry X163. Marine Accident Investigation Agencies and Landmark Inquiries: Generic term for a formal panel of investigators convened by a flag State, port State, or coastal State to inquire into a marine casualty.
Boarding X66. Port State Control and Regional MOUs: Physical embarkation by PSC officer for inspection purposes.
Boarding arrangements X32. Marine Pilotage and Pilot Operations: Means provided by the ship for pilot embarkation and disembarkation per SOLAS V/23.
Boarding Ground X159. Marine Pilotage, Pilot Districts, and Pilots' Associations: Designated charted position offshore at which a pilot embarks or disembarks a vessel.
Boarding ladder X32. Marine Pilotage and Pilot Operations: General term for the rope ladder used in pilot transfer, specified in SOLAS V/23.
Boarding Officer E2. Naval, defence and maritime law enforcement: Officer in charge of a VBSS team.
Boarding Party E1. Maritime security, geopolitics and risk: Armed team conducting visit, search and seizure under naval authority.
Boarding Phase X22. Piracy, Maritime Security and Armed Protection: Stage when pirates physically climb on board, typically via grappling hooks, ladders or knotted ropes.
Boarding speed X32. Marine Pilotage and Pilot Operations: Vessel speed during pilot embarkation, typically 5 to 7 knots to provide a lee while allowing pilot boat control.
Boarding Team X22. Piracy, Maritime Security and Armed Protection: Naval personnel inserted to recover a vessel held by pirates.
BOAS (Buoy Ocean Acoustic Sensor) D5. Coastal processes, sea-level, cryosphere and ocean observation science: Acoustic mooring sensor.
Boat Builder Awards X119. Maritime Conferences, Trade Shows and Awards: Annual awards by IBI Magazine presented at METSTRADE in Amsterdam.
Boat drill X21. STCW Certificates, Crewing and Seafarer Welfare: Periodic launching and recovery exercise of survival craft and rescue boats per SOLAS III/19.
Boat Drill Verification X5. Marine Surveying and Inspection: Witnessing scheduled abandonment ship drill during MLC and ISM audits.
Boat Drills X66. Port State Control and Regional MOUs: Required under SOLAS III/19; PSC may witness during inspection.
Boat fall X3. Ship Handling, Seamanship and Deck Vocabulary: Tackle for hoisting and lowering boats from davits.
Boat International X125. Superyacht Industry, Builders and Brokers: London publisher of Boat International magazine and the Global Order Book.
Boat International Design and Innovation Awards X119. Maritime Conferences, Trade Shows and Awards: Annual superyacht awards held at the Cortina Symposium in Italy since 2005.
Boat landing X59. Offshore Wind O&M, CTVs and SOVs: Steel ladder and fender structure on a turbine transition piece against which a CTV pushes for technician transfer.
Boat Lift X33. Inland Navigation and Barge Operations: Mechanical structure that raises or lowers vessels between water levels, alternative to lock staircases.
Boat note X6. Container, Intermodal and Trade Codes: Tally document confirming containers loaded or discharged at a terminal.
Boat-deployed influence sweep X77. Naval Mine Warfare and Mine Countermeasures: A magnetic and acoustic sweep array towed from small craft or unmanned surface vessels.
Boatbookings X125. Superyacht Industry, Builders and Brokers: Online charter platform aggregating central agent listings.
Boating Industry Training Standards X160. Maritime Academies, Universities, and STCW Certification: Recreational and yacht crew training framework distinct from STCW but referenced by superyacht crew progression.
Boatman Service X86. Port Agency, Husbandry and Disbursement: Mooring boat handling vessel lines at berth, billed through agency disbursement.
Boatmaster X33. Inland Navigation and Barge Operations: Master of an inland navigation vessel holding the required national or EU certificate.
Boatswain X3. Ship Handling, Seamanship and Deck Vocabulary: Senior unlicensed deck rating; bosun.
Boatswain (Bosun) F3. Seafaring Life, Education, Professions and Institutions: Senior deck rating responsible for deck maintenance and crew supervision.
Boatswain (Bosun) Endorsement X160. Maritime Academies, Universities, and STCW Certification: Senior deck rating role typically held by an STCW A-II/5 Able Seafarer Deck with leadership over the deck crew.
Boatswain Call X89. ECDIS and Bridge Equipment Makers: Traditional pipe used aboard naval and merchant vessels, retained on some bridge wing displays for ceremonial purposes.
Boatswain's Chair F4. Recreational Boating, Yachting and Sport: Rigging device used in mast climbing.
Bob Knight Capesize Index (legacy BCI) X161. Shipbroking, Freight Derivatives, and Baltic Indices: Original Capesize index basket prior to the BCI 5TC redesign that retired routes C2, C3, C4, C5, C7, C11, and C12.
Bobbin Gear X87. Fishing Vessels and Fisheries Management: Large rubber or steel rollers attached along the ground rope to enable trawling on uneven bottom.
BoBo (Roll-Lift) B5. Ship Types and Individual Vessels: Combined Ro-Ro/lift ship.
BOC Isotainer X83. ISO Container Manufacturing and Leasing: Industrial gas branch of Linde formerly known as BOC, operating cryogenic and compressed gas ISO tanks.
BOC Welding and Cutting X50. Ship Recycling, Demolition and Hong Kong Convention: A historical industrial gas supplier brand whose oxy-fuel equipment is widely used in recycling yards.
Bochum X92. Marine Steel Suppliers and Shipbuilding Plate: ThyssenKrupp Steel processing site in the Ruhr, Germany, historically associated with heavy plate.
BoComm Financial Leasing X49. Ship Finance, Leasing and Maritime Capital Markets: Leasing subsidiary of Bank of Communications with a maritime portfolio.
Bocomm Leasing X29. Ship Sale and Purchase, Management Contracts and Valuation: Bank of Communications Financial Leasing, major Chinese lessor.
Body bag X36. Shipboard Medical, Telemedicine and Seafarer Health: Cadaver pouch held aboard for management of death at sea pending repatriation or burial.
Body of Christ Seafarers Mission X154. Maritime Welfare, Seafarer Charities, and MLC Rights: Local seafarer ministry archetype operating welfare centers in port cities globally.
Body plan X58. Shipbuilding Yards and Construction: Drawing showing transverse section curves of the hull, used to fair the lines and define plate geometry.
Boeing 702HP X68. Maritime Satcom and Telecommunications: Satellite bus used for several maritime-relevant Ka-band and L-band platforms, including the Inmarsat I-5 Global Xpress series.
Boeing 929 Jetfoil X132. High-Speed Craft, Hydrofoils and Ferry Operators: Fully submerged hydrofoil designed by Boeing Marine Systems in Seattle, 250 passenger waterjet propelled craft, later built under licence by Kawasaki Heavy Industries.
BOEM X14. Offshore Oil and Gas Marine Operations: US Bureau of Ocean Energy Management; offshore leasing and resource evaluation.
BOEM (Bureau of Ocean Energy Management) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines: US Department of the Interior agency managing offshore energy and mineral leasing on the Outer Continental Shelf.
Bofors 40 mm X11. Naval Vessels, Warship Systems and Naval Architecture: Swedish gun in 40/60 and 40/70 marks widely used as light AA.
Bofors 57 mm Mk 3 X11. Naval Vessels, Warship Systems and Naval Architecture: Naval gun on LCS, Constellation, and Visby classes.
BOG X15. Ports, Terminals and Stevedoring: Boil-Off Gas handling at LNG import terminals.
BOG (Boil-Off Gas) X34. Decarbonization, Alternative Fuels and Carbon Pricing: Vapor evolving from cryogenic LNG, LH2, or NH3 tanks; managed by re-liquefaction, combustion, or reuse as fuel.
BOG Compressor X20. LNG Operations and Custody Transfer: Low-temperature centrifugal compressor sending vapor to engine fuel gas system, GCU, recondenser, or reliquefaction unit.
BOG Recondenser X20. LNG Operations and Custody Transfer: Onshore vessel where send-out LNG absorbs BOG before high-pressure pumping to vaporizers.
Bogacay Series X30. Tug Operations and Harbour Towage: Sanmar Shipyards range of compact ASD harbor tugs built in Turkey.
Bogacay XLI X30. Tug Operations and Harbour Towage: Variant within the Sanmar Bogacay series, an enlarged ASD design.
Bohai Leasing X83. ISO Container Manufacturing and Leasing: Chinese parent company of Florens Container Services and Avolon, listed in Shenzhen.
Bohai Sea X10. Marine Biology, Fisheries and Oceanography: Innermost gulf of the Yellow Sea on the north coast of China.
Bohai Shipbuilding X58. Shipbuilding Yards and Construction: CSSC yard at Huludao, Liaoning, building tankers, bulkers, and naval vessels.
Bohr Technology BridgePilot X107. Maritime Cybersecurity and OT Security: Bridge navigation and automation product referenced in maritime OT integration discussions.
Boil off gas X19. Engine Room Watchkeeping and UMS Operations: Vaporized cargo from LNG tanks used as fuel in ME-GI or DFDE plants.
Boil Order X41. Cruise Ship Public Health and VSP/USPH: Precautionary directive to boil potable water prior to consumption following loss of disinfection or contamination event.
Boil-off X26. Reefer Containers and Cold Chain Logistics: Vaporization of cryogenic refrigerant (LN2, dry ice) used in expendable refrigeration units.
Boil-off gas (BOG) B2. Marine Engineering: Vapor from LNG cargo or fuel tanks managed by reliquefaction or use.
Boil-off rate X56. LNG/LPG Carriers and IGC Code: Daily percentage of cargo volume lost as vapor, typically 0.10 to 0.15 percent per day on modern membrane LNG carriers.
Boil-Off Rate (BOR) X20. LNG Operations and Custody Transfer: Daily BOG generation as a percent of tank volume, typically 0.10 to 0.15 percent for modern membrane carriers, around 0.08 percent for latest GTT Mark III Flex+.
Boiler Drain Down X50. Ship Recycling, Demolition and Hong Kong Convention: The complete water removal from main and auxiliary boilers, including economizer sections, before hot cutting begins.
Boiler Drum X63. Marine Auxiliary Machinery and Pumps: Cylindrical pressure vessel of a water-tube boiler housing the water-steam interface.
Boiler Drum Lift X104. Project Cargo Forwarders and Heavy Transport: Tandem lift of a steam drum onto a power plant boiler structure.
Boiler Feed Pump X63. Marine Auxiliary Machinery and Pumps: High-pressure multistage centrifugal or reciprocating pump supplying water to the boiler at working pressure.
Boiler gauge glass X19. Engine Room Watchkeeping and UMS Operations: Bi color or reflex sight glass showing drum water level, blown down each watch.
Boiler hydrostatic test B4. Shipbuilding, Materials, Sea Trials, Retrofits and Recycling: Pressure test at 1.5x MAWP.
Boiler Mountings X63. Marine Auxiliary Machinery and Pumps: Safety and operational fittings such as safety valves, water level gauges, and stop valves.
Boiler safety valve B2. Marine Engineering: PSV per ASME Section I or class rules.
Boiler survey C2. Ship operations, crewing and technical management: Class survey of boilers, typically twice in five years.
Boiler Trim X63. Marine Auxiliary Machinery and Pumps: Auxiliary fittings including blowdown, sample, and feed connections on a boiler shell.
Boilerplate, Steel X1. Cargo Science, Commodities and Cargo Care: Heavy steel plates; require even bedding to avoid set damage.
Boiling Point X75. IMDG Code, Classes, Packing and Segregation: Temperature at which liquid boils at standard pressure, relevant to portable tank instruction selection.
Boiling range X47. Marine Fuel Quality and ISO 8217: Temperature interval over which a fuel distills, controlled in distillates by ASTM D86 cut points.
BOKA Atlantis X82. Saturation Diving and Offshore Diving Operations: Boskalis Subsea Services DSV.
BOKA Falcon X82. Saturation Diving and Offshore Diving Operations: Boskalis Subsea Services DSV used for IRM operations.
Bokalift 1 X42. Offshore Wind Installation and Cable Lay: Boskalis heavy lift crane vessel, a converted bulk carrier with a 3,000 t Huisman crane used for foundation and offshore substation installation.
Bokalift 2 X42. Offshore Wind Installation and Cable Lay: Boskalis heavy lift crane vessel with a 4,000 t Huisman crane delivered in 2021 for offshore wind work.
Bokaro X92. Marine Steel Suppliers and Shipbuilding Plate: SAIL integrated steel plant in Jharkhand, India, producing hot rolled coil and plate.
Bold Tern X42. Offshore Wind Installation and Cable Lay: Cadeler wind turbine installation jack-up vessel, originally a Fred Olsen Windcarrier asset.
Bolivar to Rotterdam X44. Shipping Indices, FFAs and Freight Markets: Atlantic coal trade benchmark forming the basis of Baltic route C7 for Capesize vessels.
Bolivian Ship Registry X98. Ship Registries and Flag States: Open registry of land-locked Bolivia administered by the General Captaincy of Ports.
Bollard C4. Ports, terminals and coastal/marine civil engineering: Mooring fitting on quay or dolphin.
Bollard Detection X109. Maritime Autonomous Surface Ships and MASS Code: A computer vision task for identifying mooring fittings on a quay during automated berthing.