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Glossary

Maritime glossary, terms beginning with O (page 5)

All maritime glossary terms that begin with the letter O, drawn from every subject section. 1233 entries.

Showing 233 of 1233 terms (page 5 of 5).

Other Display X73. Marine Hydrography, Charting and ENC
The S-52 layer containing objects not in Base or Standard display, shown at the mariner's option.
Other Substances X93. IBC Code and Chemical Tanker Operations
MARPOL Annex II classification covering liquids judged not to be NLS and therefore outside the categorical discharge regime.
OTO Melara 76mm Super Rapid X62. Naval Warships and Combat Systems
Italian rapid-fire 76mm naval gun manufactured by Leonardo.
Otobreda 76 mm Super Rapid X11. Naval Vessels, Warship Systems and Naval Architecture
Italian 76 mm naval gun with 120 rpm rate.
Otolith X10. Marine Biology, Fisheries and Oceanography
Calcium carbonate structure in fish inner ear used for age determination.
Otoscope X36. Shipboard Medical, Telemedicine and Seafarer Health
Ear examination instrument in IMGS Annex V.
Otso X52. Polar Code, Arctic and Antarctic Shipping
Finnish state icebreaker built in 1986, operated by Arctia.
Otter Board X87. Fishing Vessels and Fisheries Management
Trawl door that shears outward to spread the trawl mouth, typically 2 to 7 square meters per side on commercial vessels.
Otter Board (Trawl Door) X131. Commercial Fisheries, Trawler Fleets and Seafood Processors
Hydrodynamic foil that holds the wings of a demersal trawl open.
Otter Trawl X87. Fishing Vessels and Fisheries Management
Bottom or midwater trawl spread by otter boards, the most common trawl configuration worldwide.
Otter Trawler X87. Fishing Vessels and Fisheries Management
Vessel rigged to tow an otter trawl, usually with two warps from stern winches.
Otterstad Substation X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines
Norwegian onshore landing facility relevant to HVDC interconnectors.
Otto cycle X34. Decarbonization, Alternative Fuels and Carbon Pricing
Combustion cycle used by low-pressure LNG dual-fuel engines, associated with methane slip.
Otto cycle (gas engine) B2. Marine Engineering
Premixed spark/pilot-ignited cycle used in dual-fuel engines.
Otto cycle dual fuel X56. LNG/LPG Carriers and IGC Code
Spark-ignited gas-burning combustion cycle used in low-pressure dual-fuel engines such as the Wartsila X-DF series.
Otto-cycle low-pressure X90. Marine Engine Specific Model Enumeration
Gas combustion architecture used by WinGD X-DF dual-fuel two-stroke engines with premixed methane and pilot ignition.
Ottoman Navy F1. Maritime History
Imperial fleet of the Ottoman Empire from the fourteenth century.
Ouster LiDAR X109. Maritime Autonomous Surface Ships and MASS Code
A solid state LiDAR product family used in some marine perception stacks.
Out of Class X5. Marine Surveying and Inspection
Status when survey is overdue or recommendations not closed.
Out of service X6. Container, Intermodal and Trade Codes
Container under repair or off-hire and unavailable for booking.
Out of the Money Swap X49. Ship Finance, Leasing and Maritime Capital Markets
Interest rate swap with negative mark to market against the borrower.
Out-of-86 Score X41. Cruise Ship Public Health and VSP/USPH
Maximum achievable score on the current VSP inspection scale, with deductions for each cited deficiency.
Out-Turn X1. Cargo Science, Commodities and Cargo Care
Quantity delivered at discharge port versus B/L.
Out-Turn Survey X155. Marine Surveying Practice and Cargo Inspection
The independent measurement of cargo received at the discharge port, compared with bill of lading and ship's figures.
Outage X42. Offshore Wind Installation and Cable Lay
Planned or unplanned period during which an offshore wind asset is unavailable to generate.
Outboard equipment (Polar Code) X27. Polar Code, Ice Navigation and Polar Operations
Anchors, deck winches, etc. must operate at Polar Service Temperature.
Outboard Profile X103. US Inland Waterway Towing and Barge
A drawing showing the external arrangement of a vessel.
Outboard sea chest X19. Engine Room Watchkeeping and UMS Operations
Sea water inlet on the side shell, alternative to bottom sea chest.
Outboard seal X38. Propellers, Stern Gear and Shaft Lines
Aft (outboard) stern-tube seal, the principal interface between stern-tube lubricant and seawater.
Outbound pilot X32. Marine Pilotage and Pilot Operations
Pilot conducting the vessel from berth or anchorage to the seaward pilot station.
Outbound vessel X15. Ports, Terminals and Stevedoring
vessel departing the port.
Outbreak Definition X41. Cruise Ship Public Health and VSP/USPH
Two or more linked cases of the same illness exceeding the expected baseline rate for the conveyance.
Outbreak of War X53. Marine Insurance, P&I and Hull Clauses
A peril triggering automatic termination of war risks cover under certain clauses, particularly for war between named major powers.
[email protected] X41. Cruise Ship Public Health and VSP/USPH
VSP email contact for outbreak notifications and supplementary reports from cruise operators.
Outdrive (sterndrive) X38. Propellers, Stern Gear and Shaft Lines
Inboard-outboard drive integrating a Z-drive in the transom; used on small craft, Mercury and Volvo Penta principal makers.
Outer Bar X114. Maritime Arbitration and Shipping Law Firms
Reference to junior barristers in shipping work.
Outer Continental Shelf D2. Hydrography, tides, waves, bathymetry and marine geology
Distal portion of the continental shelf approaching the shelf break.
Outer Continental Shelf Lands Act (OCSLA) X37. Marine Spatial Planning, Subsea Cables and Submarine Pipelines
US federal statute providing authority over mineral and energy activities including pipelines on the OCS.
Outer harbor X15. Ports, Terminals and Stevedoring
portion of the port outside the inner basins.
Outer Hull X20. LNG Operations and Custody Transfer
Double-hull structure with ballast wing tanks isolating CCS from collision.
Outer Packaging X75. IMDG Code, Classes, Packing and Segregation
Outermost protective component of a combination packaging.
Outer Sound (Pentland Firth) X57. Ocean Energy Beyond Wind
Sub area of the Pentland Firth referenced in tidal stream resource assessments adjacent to MeyGen.
Outfall X10. Marine Biology, Fisheries and Oceanography
Discharge structure releasing wastewater to the sea.
Outfit Design X54. Naval Architecture Software and IACS Rules
Modeling of piping, HVAC, cable trays, and equipment in AVEVA Marine, Foran, and CADMATIC.
Outfitting X58. Shipbuilding Yards and Construction
Installation of piping, machinery, electrical, accommodation, and equipment systems.
Outfitting berth X58. Shipbuilding Yards and Construction
Wet berth where outfitting is completed after the hull leaves the dock.
Outfitting block X58. Shipbuilding Yards and Construction
Block heavily preoutfitted with piping, cable trays, and equipment before erection.
Outfitting Material Inventory X50. Ship Recycling, Demolition and Hong Kong Convention
The IHM Part I record of paneling, joinery, and decorative finishes aboard the ship.
Outfitting quay X58. Shipbuilding Yards and Construction
Quay where final outfitting occurs alongside following dock float-out.
Outflow performance X162. Naval Architecture, Stability, Resistance, and Structural Design
Probabilistic mean oil outflow parameter under MARPOL Annex I Regulation 23 for tankers above 5000 DWT.
Outhaul X3. Ship Handling, Seamanship and Deck Vocabulary
Rope for hauling a sail outboard along a spar.
Outland Technology 1000 X65. ROVs, AUVs, USVs and Marine Robotics
Outland Technology compact observation-class ROV rated to about 1,000 ft of seawater.
Outland Technology 2000 X65. ROVs, AUVs, USVs and Marine Robotics
Mid-size Outland Technology observation ROV used in inspection work.
Outlet pH X69. EGCS Scrubbers, SCR and Marine Air Emissions
Discharge water pH measured at the overboard line, required to be 6.5 minimum at the discharge point.
Outline plan X16. Nautical Science, Navigation and COLREGs
Initial summary plan in passage planning appraisal.
Outokumpu X92. Marine Steel Suppliers and Shipbuilding Plate
Finnish stainless steel producer with main melt shop and plate mill at Tornio.
Outport Refuge X60. Marine Salvage and Wreck Removal
Sheltered location used as place of refuge when port of refuge cannot be reached.
Outport Trade F1. Maritime History
Colonial New England and Newfoundland fish trade.
Output Current X100. Marine Cathodic Protection and Anodes
The amperage delivered by an ICCP rectifier to the anode circuit.
Output Voltage X100. Marine Cathodic Protection and Anodes
The DC voltage produced by an ICCP rectifier across the anode-to-structure circuit.
Outreach X15. Ports, Terminals and Stevedoring
distance an STS crane spreader can reach beyond the waterside rail.
Outrigger X39. Pre-1900 Maritime History
A lateral float used to stabilize Pacific and Indian Ocean canoes, observed by European mariners from the early sixteenth century.
Outrigger (Trimaran) X132. High-Speed Craft, Hydrofoils and Ferry Operators
Smaller side hulls (amas) of a trimaran, providing transverse stability rather than primary buoyancy.
Outrigger Pad X104. Project Cargo Forwarders and Heavy Transport
Steel or composite pad placed under crane outriggers to distribute load.
Outrigger Trawler X87. Fishing Vessels and Fisheries Management
Vessel rigged with side booms to tow two trawls simultaneously without otter boards.
Outright Ban (Russian Oil Imports) X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes
The full U.S. import prohibition under EO 14066, separate from the price-cap mechanism applicable to third-country trade.
Outright Sale X29. Ship Sale and Purchase, Management Contracts and Valuation
Sale free of charter, vessel delivered with full commercial freedom.
Outshore Salvage Tug X167. Major Salvage Companies, Wreck Removals, and Equipment
Large ocean going salvage tug stationed at strategic points to respond to deep sea casualties.
Outsourced Catering X120. Marine Catering, Provisions and Ship Chandlers
Engagement of catering manager such as Garrets, MCTC, or Hanseatic Marine Catering to manage menu, stores, and cook performance.
Outstanding Claims Reserve X4. Marine Insurance, P&I and Claims
see Loss Reserve.
Outturn Report X115. Marine Bunker and Cargo Surveying
Final discharge port document recording total cargo quantity outturned, free water, sediment, and any shortage versus bill of lading.
Outturn Statement X5. Marine Surveying and Inspection
Document recording quantity received against bill of lading.
Outturn Survey X5. Marine Surveying and Inspection
Final survey at discharge to determine quantity and condition.
Outward Clearance Bundle X86. Port Agency, Husbandry and Disbursement
Documents required for outward clearance bundled by the agent.
Ovality X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring
Cylinder liner or journal out-of-roundness measured by micrometer in two perpendicular planes during inspections.
Ovation of the Seas X64. Cruise Industry Operators, Brands and Ships
Royal Caribbean Quantum-class ship delivered in 2016.
Over-Panamax STS Crane X46. Container Terminal Operations
A ship-to-shore crane sized to work vessels wider than the original Panama Canal locks, with outreach typically 17 to 18 rows.
Over-Protection X100. Marine Cathodic Protection and Anodes
A condition of more negative potential than about -1100 mV vs Ag/AgCl that can cause hydrogen evolution and cathodic disbondment of coatings.
Over-rail X15. Ports, Terminals and Stevedoring
position on the apron rail of an STS crane.
Over-Stowed X1. Cargo Science, Commodities and Cargo Care
Cargo placed below others; requires shifting to discharge.
Over-the-road X15. Ports, Terminals and Stevedoring
container moves leaving the terminal by truck.
Overage C1. Commercial shipping, chartering, economics and finance
Cargo carried in excess of bill of lading quantity.
Overage Clause X51. Maritime Arbitration, Law and BIMCO Clauses
A bill of lading provision regulating cargo overlanded relative to the bill quantity.
Overage Vessel X53. Marine Insurance, P&I and Hull Clauses
A vessel older than a defined age, attracting age-related premium loadings or restrictions.
Overall Beam X79. Tugs and Towage Industry
Maximum breadth of a tug measured across its hull.
Overall Length (LOA) X87. Fishing Vessels and Fisheries Management
Defining dimension for fishing vessel categories under EU and FAO statistics.
Overbased detergent X61. Marine Lubricants and Cylinder Oils
Detergent additive carrying excess metal carbonate to deliver high Base Number in a small treat rate.
Overboard discharge X18. Ballast Water, Biofouling and Antifouling
Release of treated or exchanged ballast water through dedicated discharge line.
Overboard Discharge Line X69. EGCS Scrubbers, SCR and Marine Air Emissions
Pipe routing treated washwater to a single, identifiable hull penetration.
Overboard Monitoring System X69. EGCS Scrubbers, SCR and Marine Air Emissions
Set of instruments measuring discharge water pH, PAH, turbidity and temperature.
Overburden X124. Dredging Industry and Reclamation Contractors
Soft layer overlying target dredging stratum.
Overcapacity X87. Fishing Vessels and Fisheries Management
Fleet ability to catch more than the sustainable yield, addressed by FAO IPOA-Capacity 1999.
Overcast X16. Nautical Science, Navigation and COLREGs
Sky cover of 8 oktas.
Overcoat interval X45. Marine Paints, Coatings and Antifouling
Manufacturer-specified time window during which a coating may be overcoated without surface preparation.
Overcoating Interval X88. Marine Surface Preparation and Coatings Application
Minimum and maximum time between application of successive coats specified by the coating manufacturer.
Overcurrent Relay X67. Marine Electrical Systems and Shore Power
Protection relay that trips on currents exceeding a set threshold for a defined time.
Overdepth allowance X175. Port Engineering, Dredging, Breakwaters, and Quays
Additional dredged depth beyond the design level, paid to the contractor as a contractual tolerance.
Overfalls B3. Nautical Science
Steep choppy seas at tidal races marked on charts.
Overfeed X61. Marine Lubricants and Cylinder Oils
Cylinder oil injection rate above the optimum required for wear control, increasing operating cost and deposit formation.
Overfill protection X56. LNG/LPG Carriers and IGC Code
Independent high-level alarm and shutdown system that prevents tank overfilling beyond the IGC Code filling limit.
Overfished X87. Fishing Vessels and Fisheries Management
Stock status in which biomass is below a defined limit reference point.
Overflow X41. Cruise Ship Public Health and VSP/USPH
Drainage pathway from a sink or tank, required to be configured to prevent contamination of potable systems.
Overflow plume X175. Port Engineering, Dredging, Breakwaters, and Quays
Sediment plume generated by hopper overflow during TSHD loading, an environmental concern in sensitive areas.
Overflow yard X15. Ports, Terminals and Stevedoring
secondary stack used in peak periods.
Overhang F5. The Reference Layer: Glossary, Units, Signals and Information Sources
Portion of hull outside the perpendiculars.
Overhang (shaft) X38. Propellers, Stern Gear and Shaft Lines
Cantilevered length of tailshaft beyond the aft stern-tube bearing carrying the propeller weight.
Overhang Lift X104. Project Cargo Forwarders and Heavy Transport
Lift where the load extends significantly beyond the trailer or vessel deck edge.
Overhanging Stern X30. Tug Operations and Harbour Towage
Stern shape providing clear water at the tug's working end.
Overhaul X3. Ship Handling, Seamanship and Deck Vocabulary
Examine and repair; separate the blocks of a tackle.
Overhaul Interval X174. Marine Engine Maintenance, Overhaul, and Condition Monitoring
OEM-specified running-hour period between scheduled inspections, varying with engine type, fuel quality, and load profile.
Overhauls X19. Engine Room Watchkeeping and UMS Operations
Scheduled maintenance involving disassembly, per PMS intervals.
Overhead Clearance Pilot X159. Marine Pilotage, Pilot Districts, and Pilots' Associations
Pilot endorsement specific to vessels passing under fixed bridges with critical air-draft margins.
Overhead Coverage X80. Maritime Search and Rescue Coordination
Persistent aerial presence over a search area.
Overhead lighting X15. Ports, Terminals and Stevedoring
high-mast yard lighting.
Overhead Line Crossing X104. Project Cargo Forwarders and Heavy Transport
Section of a haul route where the load passes under or near energized lines.
Overheight X6. Container, Intermodal and Trade Codes
Cargo or container exceeding standard height; HC, oversized flatrack.
Overheight Indicator X83. ISO Container Manufacturing and Leasing
Marking or flag on a container exceeding standard 2.591 m external height.
Overland SAR X80. Maritime Search and Rescue Coordination
Land based SAR coordinated with maritime SAR when shoreline involved.
Overlap, Combination X159. Marine Pilotage, Pilot Districts, and Pilots' Associations
SOLAS requirement that the lower end of the accommodation ladder and the upper end of the pilot ladder are positioned together within the prescribed geometry.
Overlay X73. Marine Hydrography, Charting and ENC
A non-ENC layer (AIO, MIO, weather routing) shown above the underlying chart.
Overlength X6. Container, Intermodal and Trade Codes
Cargo or container exceeding standard length.
Overload trip X19. Engine Room Watchkeeping and UMS Operations
Generator or motor protection tripping on overcurrent.
Overlord USV Program X109. Maritime Autonomous Surface Ships and MASS Code
The United States Navy program of record for large unmanned surface vessels including Ranger, Nomad, Mariner, and Vanguard.
Overmarine X125. Superyacht Industry, Builders and Brokers
Pisa, Italy parent group of Mangusta, founded by the Balducci family.
Overnight Call X164. Cruise Industry, Brands, Ship Classes, and Terminals
A cruise port call lasting more than 24 hours, typical at marquee ports including Venice, Istanbul, and Saint Petersburg.
Overpack X75. IMDG Code, Classes, Packing and Segregation
Enclosure used by a single consignor to consolidate one or more packages into one unit for handling.
Overpack Mark X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers
The word "OVERPACK" in letters at least 12 mm high, per 5.1.2.1.1.
Overpressure Relief X82. Saturation Diving and Offshore Diving Operations
Safety valve protecting chambers from over-pressurization.
Overpressure Test X75. IMDG Code, Classes, Packing and Segregation
Pressure test on packagings and IBCs to verify integrity under IMDG 6.1 and 6.5.
Overpull X14. Offshore Oil and Gas Marine Operations
Tension exceeding nominal load applied to anchor lines or pipelines.
Overriding Clause X53. Marine Insurance, P&I and Hull Clauses
A clause stipulated to prevail over inconsistent provisions elsewhere in the policy.
Overriding factor X7. Flag State, Port State Control and Detention Vocabulary
Condition such as collision, grounding, fire or pollution incident triggering an unscheduled PSC inspection.
Overseas Container Line F1. Maritime History
1965 British-formed early containership operator.
Overseas Passenger Terminal Sydney X164. Cruise Industry, Brands, Ship Classes, and Terminals
The OPT at Circular Quay, the historic Sydney cruise terminal beneath the Sydney Harbour Bridge.
Oversize Vessel Stowage X104. Project Cargo Forwarders and Heavy Transport
Stowage arrangement allowing cargo wider than the hatch opening on deck.
Overspeed trip B2. Marine Engineering
Mechanical/electrical trip on engine overspeed.
Overspray X45. Marine Paints, Coatings and Antifouling
Paint mist that fails to adhere to the target surface and accumulates as dry dust on adjacent areas.
Overstand X3. Ship Handling, Seamanship and Deck Vocabulary
Stand on past the laying course.
Overstow X9. Cargo Securing, Lashing and Stability Vocabulary
Cargo placed atop another; requires consideration of stack weight limits.
Overtaking Situation X109. Maritime Autonomous Surface Ships and MASS Code
The COLREGs encounter type addressed by Rule 13 that imposes the give way duty on the overtaking vessel including MASS overtaking traffic.
Overtide D2. Hydrography, tides, waves, bathymetry and marine geology
Higher harmonic of a tidal constituent produced by shallow water nonlinearities.
Overtopping device X57. Ocean Energy Beyond Wind
Wave energy converter that captures water in a reservoir above sea level for subsequent low-head turbine discharge, exemplified by Wave Dragon.
Overview X73. Marine Hydrography, Charting and ENC
Usage band 1 in the ENC scale hierarchy.
Overwidth X6. Container, Intermodal and Trade Codes
Cargo or container exceeding standard width.
Overwidth allowance X175. Port Engineering, Dredging, Breakwaters, and Quays
Additional dredged width beyond the design channel width, paid to the contractor as a contractual tolerance.
OVID X40. Tanker Vetting, SIRE and VIQ
The OCIMF Offshore Vessel Inspection Database, the equivalent of SIRE for offshore support and construction vessels.
OVID (Offshore Vessel Inspection Database) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA
The OCIMF offshore inspection platform analogous in role to SIRE for tankers.
OVIQ X40. Tanker Vetting, SIRE and VIQ
The Offshore Vessel Inspection Questionnaire used in OVID inspections.
OVIQ (Offshore Vessel Inspection Questionnaire) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA
The OCIMF inspection questionnaire used within OVID for offshore vessels.
OVMSA X40. Tanker Vetting, SIRE and VIQ
The Offshore Vessel Management and Self Assessment, the OCIMF self-assessment framework for offshore vessel operators, parallel to TMSA.
OVMSA (Offshore Vessel Management and Self Assessment) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA
The OCIMF self-assessment scheme for offshore vessel operators, parallel to TMSA.
OVPQ (Offshore Vessel Particulars Questionnaire) X150. Tanker Vetting: OCIMF SIRE, CDI, RightShip, and TMSA
The OCIMF particulars data set for offshore support vessels.
OW Bunker X49. Ship Finance, Leasing and Maritime Capital Markets
Danish marine fuel supplier whose 2014 collapse caused significant counterparty losses across shipping.
OW Bunker A S X72. Bunkering Hubs and Bunker Suppliers
Danish bunker group that collapsed in November 2014 in the largest insolvency in Danish corporate history, triggering global litigation on bunker payment chains.
OW Bunker Litigation X72. Bunkering Hubs and Bunker Suppliers
Series of court decisions across multiple jurisdictions including the UK Supreme Court Res Cogitans 2016 establishing that retention of title in bunker chains was practically defeated by consumption…
OWASP X107. Maritime Cybersecurity and OT Security
Open Worldwide Application Security Project producing standards and tools for application security.
Owner Code X83. ISO Container Manufacturing and Leasing
Three-letter portion of the four-character BIC code identifying the owner.
Owner of Property X99. Marine Salvage Awards and SCOPIC
Party owning vessel, cargo, freight, or bunkers, liable for proportionate share of salvage award.
Owner of Record X151. Maritime Sanctions, Dark Fleet, and Price Cap Regimes
The registry-listed owner, distinct from beneficial owner for sanctions compliance purposes.
Owner Performance X66. Port State Control and Regional MOUs
Component of company performance under Paris MOU calculator.
Owner's Agent X86. Port Agency, Husbandry and Disbursement
Agent appointed by the shipowner to protect owner's interests at the port.
Owner's Agents X51. Maritime Arbitration, Law and BIMCO Clauses
Port agents appointed by the shipowner, often as alternative to charterer's agents.
Owner's broker X71. Shipbrokers and Brokerage Firms
Broker mandated to represent the owner in a charter or sale.
Owner's Cost Provisions X120. Marine Catering, Provisions and Ship Chandlers
Stores billed direct to the registered owner, distinct from manager-account or charter-account billing.
Owner's deck X35. Yacht and Superyacht Industry
Deck level dedicated to owner accommodation and private terrace.
Owner's Final Voyage Plan X28. Ship Recycling and End-of-Life
Voyage plan for the delivery from last commercial port to recycling yard.
Owner's pilot X15. Ports, Terminals and Stevedoring
pilot retained by ship owner outside compulsory pilotage.
Owner's representative X7. Flag State, Port State Control and Detention Vocabulary
Person designated by the owner to liaise with PSC officers and the master.
Owner's Representative Survey X43. Marine Surveying and Warranty Surveying
An attendance by a surveyor acting on behalf of an owner during repairs, modifications, or newbuilding work at a third-party yard.
Owner's Reps X17. Chartering, Shipbroking and Freight Trading
Representatives appointed by the owner during loading, discharge or major operations.
Owner's responsibility X170. SOLAS 1974 Convention: Chapter-by-Chapter Glossary
SOLAS IX/3 requires the company to ensure compliance with the ISM Code and provide resources and shore-based support.
Owner's Statement of Compliance X147. Ship Recycling, Hong Kong Convention, and Recycling Yards
Shipowner declaration accompanying delivery of the ship to the recycling facility.
Owner's suite X35. Yacht and Superyacht Industry
Master cabin layout including bedroom, bathrooms, study, and often a private deck.
Owner's Surveyor X5. Marine Surveying and Inspection
Surveyor representing the shipowner's interests.
Owner's Tonnage X108. Marine Insurance and P&I Clubs
P&I cover purchased by registered shipowners for their owned tonnage, contrasted with charterer's liability cover.
Owner's Workers' Compensation X4. Marine Insurance, P&I and Claims
cover for liability to harbor workers under the US Longshore and Harbor Workers' Compensation Act.
Owners' Bill of Lading A5. Maritime Law, private and commercial
Bill issued on behalf of the registered owner as carrier.
Owners' Defence Insurance X157. Marine Loss Adjusters, GA Practice, and Casualty Firms
FD&D cover providing legal costs for disputes arising from charterparties and other operating contracts.
OWS X6. Container, Intermodal and Trade Codes
Owners' surveyor, attending vessel and container damage inspections.
OWS 15 ppm Alarm X63. Marine Auxiliary Machinery and Pumps
Audible and visual warning indicating oil content above the regulatory limit.
Owusu v Jackson (Case C-281/02) [2005] ECR I-1383 X143. Landmark Maritime Law Cases and Doctrines
CJEU held that English courts could not stay proceedings on forum non conveniens grounds where a defendant was domiciled in a Member State under Brussels I.
Oxelosund X92. Marine Steel Suppliers and Shipbuilding Plate
SSAB integrated steelworks in Sweden producing Hardox and Strenx quenched and tempered plate.
Oxford Marine X124. Dredging Industry and Reclamation Contractors
UK small workboat operator on dredging support.
Oxford Maritime Centre, Greenwich Affiliation F3. Seafaring Life, Education, Professions and Institutions
Heritage academic body.
Oxidation X61. Marine Lubricants and Cylinder Oils
Reaction of base oil hydrocarbons with oxygen at elevated temperature, leading to viscosity rise and acid formation.
Oxidation (Cargo) X1. Cargo Science, Commodities and Cargo Care
Reaction with air; causes coal heating, oil rancidity.
Oxidation (Stores) X120. Marine Catering, Provisions and Ship Chandlers
Spoilage mechanism in fats and oils, controlled by FEFO rotation.
Oxidation stability X2. Marine Bunker Fuels, Lubricants and Bunkering Operations
Resistance of fuel to degradation by oxygen, measured by ASTM D2274 for distillates.
Oxide-bonded antifouling X45. Marine Paints, Coatings and Antifouling
Antifouling formulation in which biocide is bonded into a metal oxide network.
Oxidising Substance (5.1) X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers
Substance assigned to Class 5.1 based on the burn time test in UN Manual of Tests and Criteria Test O.1 or O.2 (solids) or O.3 (liquids).
Oxidizer X75. IMDG Code, Classes, Packing and Segregation
Class 5.1 substance that yields oxygen and can support combustion of other materials.
OXY-acetylene equipment X170. SOLAS 1974 Convention: Chapter-by-Chapter Glossary
SOLAS II-2/4 controls storage and use of welding gas cylinders.
Oxy-Fuel Cutting X28. Ship Recycling and End-of-Life
Primary cutting method using oxygen and acetylene or propane.
Oxygen Analyzer X82. Saturation Diving and Offshore Diving Operations
Instrument measuring oxygen partial pressure or percentage.
Oxygen Cleaning X82. Saturation Diving and Offshore Diving Operations
Special cleaning of components handling high-purity oxygen.
Oxygen Compatible Lubricant X82. Saturation Diving and Offshore Diving Operations
Lubricant qualified for oxygen service such as Krytox.
Oxygen cylinder X36. Shipboard Medical, Telemedicine and Seafarer Health
200-400 L medical oxygen with regulator and flow meter per ship category.
Oxygen Depletion X1. Cargo Science, Commodities and Cargo Care
Hazard in holds carrying coal, DRI, wood pellets, ferrosilicon.
Oxygen mask (Hudson) X36. Shipboard Medical, Telemedicine and Seafarer Health
Simple face mask for low-to-medium-flow oxygen.
Oxygen Minimum Zone (OMZ) D1. Physical and chemical oceanography and marine meteorology
Mid-depth layer with very low dissolved oxygen concentrations.
Oxygen Partial Pressure X82. Saturation Diving and Offshore Diving Operations
ppO2, the fraction of total pressure attributable to oxygen.
Oxygen Refrigerated Liquid UN 1073 X172. IMDG Code: Classes, Divisions, Segregation, and Key UN Numbers
A Class 2.2 cryogenic liquid with subsidiary risk 5.1 due to oxidising properties.
Oxygen saturation (SpO2) X36. Shipboard Medical, Telemedicine and Seafarer Health
Pulse oximeter measurement; key triage parameter.
Oxygen scavenging X70. Reefer Containers and Cold Chain Shipping
Reduction of oxygen concentration inside a reefer container through respiration, sealing, and active gas management.
Oxygen Solubility D1. Physical and chemical oceanography and marine meteorology
Maximum dissolved O2 concentration at saturation, decreasing with temperature and salinity.
Oxygen Toxicity X82. Saturation Diving and Offshore Diving Operations
Pulmonary or CNS injury from prolonged or high-pressure oxygen exposure.
Oxygen Window X82. Saturation Diving and Offshore Diving Operations
Difference between inspired and venous oxygen partial pressures aiding off-gassing.
Oxygenate Contamination X115. Marine Bunker and Cargo Surveying
Presence of unintended oxygenated compounds such as phenols or styrenes in fuel, identified in the 2018 Houston contamination case.
Oyster X10. Marine Biology, Fisheries and Oceanography
Bivalve mollusk of the families Ostreidae and Pteriidae; key aquaculture species.
Oyster (Aquamarine Power) X57. Ocean Energy Beyond Wind
Hinged oscillating wave surge converter developed by Aquamarine Power and tested at EMEC.
OZM-72 X77. Naval Mine Warfare and Mine Countermeasures
Although primarily a land mine, referenced where coastal mine warfare planning intersects with shore demolition operations.
Ozone BWMS X18. Ballast Water, Biofouling and Antifouling
Treatment injecting ozone gas into ballast for oxidative disinfection.
Ozone depletion potential X70. Reefer Containers and Cold Chain Shipping
Index of a refrigerant's capacity to destroy stratospheric ozone, relative to R-11, used in Montreal Protocol regulation.
Ozone-Depleting Substance Inventory X50. Ship Recycling, Demolition and Hong Kong Convention
The IHM Part I record of CFCs, HCFCs, halons, and methyl bromide, controlled under the Montreal Protocol.
Ozone-Depleting Substances ODS X28. Ship Recycling and End-of-Life
Chlorofluorocarbons, halons, and HCFCs listed in IHM Table A.