Maritime Acronyms
The list below is not exhaustive but the Acronyms will be updated from time to time since new ones will be added. The best way to find the acronym you are searching for is by pressing ctr+f in your web browser to pop up the search bar and type the acronym you are searching.
| 2H | Second Half |
| A/S | Alongside |
| AA | Always Afloat |
| AAAA | Always Accessible Always Afloat |
| AARA | Amsterdam-Antwerp-Rotterdam Area |
| ABT | About |
| ADCOM | Address Commission |
| AFFF | Aqueous Film Forming Foam |
| AFFREIGHTMENT | The hiring of a ship in whole or part |
| AFSPS | Arrival First Sea Pilot Station (Norway) |
| AFT | At or towards the stern or rear of a ship |
| AGW | All Going Well |
| AHL | Australian Hold Ladders |
| AIO | Admiralty Information Overlay |
| ALARP | As Low As Reasonable Practicable |
| AMSA | Australian Maritime Safety Authority |
| AMVER | Automated Mutual-Assistance Vessel Rescue System |
| ANTHAM | Antwerp-Hamburg Range |
| APHIS | Animal & Plant Health Inspection Service |
| API | American Petroeum Institute |
| APPS | Act to Prevent Pollution from Ships |
| APS | Arrival Pilot Station |
| APTF | Asia Pacific Terminal Forum |
| ARAG | Amsterdam-Rotterdam–Antwerp-Ghent Range |
| ARPA | Automatic Radar Plotting Aid |
| ASI | Annual Safety Inspection |
| ATDNSHINC | Any Time Day or Night Sundays and Holidays Included |
| ATUTC | Actual Times Used to Count |
| BAF | Bunker Adjustment Factor. A Fuel Surcharge expressed as a percentage added or subtracted from the freight amount reflecting the movement in the market place price for bunkers. |
| BALLAST | Heavy weight, often sea water, necessary for the stability and safety of a ship which is not carrying cargo. |
| BAREBOAT CHTR | Bareboat Charter Owners lease a specific ship and control its technical management and commercial operations only. |
| BBB | Before Breaking Bulk |
| BDI | Both Dates Inclusive |
| BDN | Bunker Delivery Note |
| BEAM | The maximum breadth of a ship |
| BEI | Biological Exposure Indices |
| BENDS | Both Ends (Load & Discharge Ports) |
| BEP | Best Environmental Practice |
| BI | Both Inclusive |
| BIMCO | Baltic & International Maritime Council |
| BL (1) | Bale |
| BL (2) | (Bill of Lading) A document signed by the carrier which acts as a receipt and evidence of title to the cargo. |
| BLG | Bulk Liquids and Gases |
| BM | Beam |
| BMP | Best Management Practices |
| BNWAS | Bridge Navigational Watch Alarm System |
| BOB | Bunker on Board |
| BOEMRE | Bureau of Ocean Energy Management, Regulation and Enforcement |
| BOFFER | Best Offer |
| BPG | Bridge Procedures Guide |
| BPQ | Barge Particulars Questionnaire |
| BROB | Bunkers Remaining on Board |
| BSG | Barge Safety Guide |
| BSS | Basis |
| BSS 1/1 | Basis 1 Port to 1 Port |
| BT | Berth Terms |
| BUNDLING | This is the assembly of pieces of cargo, secured into one manageable unit. This is a very flexible description; a rule of thumb is to present cargo at a size easily handled by a large (20 ton) fork lift truck. |
| BUNKERS | Name given for vessels Fuel and Diesel Oil supplies (Originates from coal bunkers) |
| BWAD | Brackish Water Arrival Draft |
| CAA | Clean Air Act |
| CALM | Catenary Anchor Leg Mooring |
| CAM | Court Appointed Monitor |
| CARB | California Air Resources Board |
| CAS | Condition Assessment Scheme |
| CBA | Collective Bargaining Agreement |
| CBFT (or CFT) | Cubic Feet |
| CBM | Cubic Meter |
| CBP | Customs Border Protection |
| CCM | Corporate Compliance Manager |
| CCNR | Central Commission for Navigation on the Rhine |
| CCTV | Close Circuit Television |
| CFG | China Focus Group |
| CFO | Chief Financial Officer |
| CFR | Code of Federal Regulations |
| CFR (or C&F) | Cost and Freight |
| CHOPT | Charterers Option |
| CHTRS | Charterers |
| CIC | Concentrated Inspection Campaign |
| CIF | Cost, Insurance & Freight. Seller pays all these costs to a nominated port or place of discharge. |
| CMG | Course Made Good |
| CMID | Common Marine Inspection Document |
| COA | Contract of Affreightment Owners agree to accept a cost per revenue ton for cargo carried on a specific number of voyages. |
| COACP | Contract of Affreightment Charter Party |
| COB | Close of Business |
| COD | Cash On Delivery |
| COG | Course Over Ground |
| COGSA | Carriage of Goods by Sea Act |
| COMSAR | Sub-Committee on Radiocommunciations and Search and Rescue |
| CONCAWE | The Oil Companies’ European Organisation for Environment, Health and Safety |
| CONS | Consumption |
| COP | Custom Of Port |
| COTP | Captain of the Port |
| CP (or C/P) | Charter Party |
| CPA | Closest Point of Approach |
| CPD | Charterers Pay Dues |
| CPR | Cardio Pulmonary Resuscitation |
| CPT | Carriage Paid To |
| CQD | Customary Quick Dispatch |
| CRN | Crane |
| CROB | Cargo Remaining on Board |
| CSC | Convention for Safe Containers |
| CSM | Cargo Securing Manual |
| CSR | Continuous Synopsis Record |
| CSSC | Code of Safe Practice for Stowage & Securing Cargo |
| CST | Centistoke |
| CTF | Carbon Task Force |
| CTR | Container Fitted |
| CTU | Cargo Transport Unit |
| CWA | Clean Water Act |
| D&A | Drug & Alcohol |
| DAPS | Days all Purposes (Total days for loading & discharging) |
| DDC | Deck Decompression Chamber |
| DDP | Delivered Duty Paid. |
| DDU | Delivered Duty unpaid. |
| DE | Design and Equipment |
| DEM | Demurrage |
| DESP | Dispatch |
| DET | Detention |
| DHDATSBE | Dispatch Half Demurrage on Actual Time Saved Both Ends |
| DHDWTSBE | Dispatch Half Demurrage on Working Time Saved Both Ends |
| DISCH | Discharge |
| DK | Deck |
| DLOSP | Dropping Last Outwards Sea Pilot (Norway) |
| DMLC | Decleration of Maritime Labour Convention |
| DNRSAOCLONL | Discountless and Non-Returnable Ship and/or Cargo Lost or Not Lost |
| DO | Diesel Oil |
| DOB | Date of Birth |
| DOLSP | Dropping Off Last Sea Pilot (Norway) |
| DOP | Dropping Outward Pilot |
| DOT | Department of Transport |
| DR | Dead Reckoning |
| DRAFT | Depth to which a ship is immersed in water. The depth varies according to the design of the ship and will be greater or lesser depending not only on the weight of the ship and everything on board, but also on the density of the water in which the ship is lying. |
| DRK | Derrick |
| DSC | Dangerous Goods, Solid Cargoes and Containers |
| DUNNAGE | Materials of various types, often timber or matting, placed among the cargo for separation, and hence protection from damage, for ventilation and, in the case of certain cargoes, to provide space in which the forks of a lift truck may be inserted. |
| DWAT (or DWT) | Deadweight. Weight of cargo, stores and water, i.e. the difference between lightship and loaded displacement. |
| EBL | Electronic Range Line |
| EC | East Coast |
| ECDIS | Electronic Chart Display & Information System |
| ECSA | European Community Shipowners Association |
| EEDI | Energy Efficient Design Index |
| EETF | Eastern European Terminal Forum |
| EEZ | Exclusive Economic Zone |
| EHQ | Emergency Head Quarters |
| EIU | Even if Used |
| ELVENT | Electric Ventilation |
| EMR | Effective Mooring Revision |
| EMS | Environmental Management System |
| EMSA | European Maritime Safety Authority |
| ENC | Electronic Navigational Chart |
| ENOA | Electronic Notice of Arrival |
| EOS | Engine Operating Station |
| EPA | Environmental Protection Agency |
| EPA | Estimated Position |
| EPIRB | Emergency Position Indicating Radio Beacons |
| ESPH | Evaluation of Safety and Pollution Hazards |
| ETA | Estimated Time of Arrival |
| ETC | Estimated Time of Completion |
| ETD | Estimated Time of Departure |
| ETOPS | Emergency Towing-off Pennant System |
| ETS | Environmental Tags System |
| ETS | Estimated Time of Sailing |
| EVTMS | Enhanced Vessel Traffic Management System |
| EXCOM | Executive Committee |
| EXW | Ex Works |
| FAL | Facilitation Committee |
| FAS | Free Alongside Ship. Seller delivers goods to appropriate dock or terminal at port of embarkation and buyer covers costs and risks of loading. |
| FD | Free of Dispatch |
| FDD | Freight Demurrage Deadfreight |
| FDIS | Free Discharge |
| FEU | Forty foot container equivalency unit Standard 40′ Container |
| FHEX | Fridays/Holidays Excluded |
| FHINC | Fridays/Holidays Included |
| FILO | Free In/Liner Out. Seafreight with which the shipper pays load costs and the carrier pays for discharge costs. |
| FIO | Free In/Out. Freight booked FIO includes the sea freight, but no loading/discharging costs, i.e. the charterer pays for cost of loading and discharging cargo. |
| FIOS | Free In/Out Stowed. As per FIO, but includes stowage costs. |
| FIOSLSD | Free In/Out Stowed, Lashed, Secured and Dunnaged. As per FIO, but includes cost of lashing securing and dunnaging cargo to Masters satisfaction. |
| FIOST | Free In/Out and Trimmed. Charterer pays for cost of loading/discharging cargo, including stowage and trimming. |
| FIOT | Free In/Out and Trimmed. As per FIOS but includes trimming the leveling of bulk cargoes |
| FIT | Free In Trimmed |
| FIW | Free In Wagon |
| FIXING | Chartering a Vessel |
| FLT | Full Liner Terms Shipowner pays to load and discharge the cargo |
| FMC | Federal Maritime Commission US government agency |
| FMS | Fathoms 6 feet |
| FO (IFO) | Fuel Oil/Intermediate FO |
| FOB | Free on Board. Seller sees the goods “over the ship’s rail” on to the ship which is arranged and paid for by the buyer |
| FOFFER | Firm Offer |
| FOG | For Our Guidance |
| FOQ | Free On Quay |
| FOR | Free On Rail |
| FORCE MAJEURE | Clause limiting responsibilities of the charterers, shippers and receivers due to events beyond their control. |
| FOT | Free On Truck |
| FOW (1) | First Open Water |
| FOW (2) | Free On Wharf |
| FPD | Fall Preventing Device |
| FRC | Fast Rescue Craft |
| FREE OUT | Free of discharge costs to Owners |
| FSE | Free Surface Effect |
| FSG | Floating Systems Group |
| FSI | Flag State Implementation |
| FSS | Fire Safety Systems |
| FSU | Floating Storage Unit |
| FWAD | Fresh Water Arrival Draft |
| FWDD | Fresh Water Departure Draft |
| FYG | For Your Guidance |
| FYI | For Your Information |
| GA | General Average |
| GBS | Goal Based Standard |
| GHG | Green House Gas |
| GISIS | Global Integrated Shipping Information System |
| GLS | Gearless |
| GMPHOM | Guide to Manufacturing & Purchasing Hoses for Offshore Moorings |
| GN (or GR) | Grain (capacity) |
| GNCN | Gencon a standard BIMCO charter party form |
| GNSS | Global Navigation Satellite Systems |
| GO | Gas Oil |
| GPC | General Purposes Committee |
| GRD | Geared |
| GRP | Glass Reinforced Plastic |
| GRT | Gross Registered Tonnage |
| GSB | Good Safe Berth |
| GSP | Good Safe Port |
| GTEE | Guarantee |
| HA | Hatch |
| HAEMHF | Hose Ancillary Equipment & Managing Hoses in the Field |
| HCFC | Hydro Chloro Fluoro Carbons |
| HDWTS | Half Dispatch Working Time Saved |
| HGWG | Mercury Working Group |
| HMS | Heavy Metal Scrap |
| HNS | Hazardous and Noxious Substances |
| HO | Hold |
| HP | Horse Power |
| HRU | Hydrostatic Release Unit |
| HSSC | Harmonised System of Survey and Certification |
| HW | High Water |
| HWP | Hot Work Permit |
| IAAP | International Air Pollution Prevention |
| IACS | International Association of Clasification Societies |
| IADC | International Association of Drilling Contractors |
| IAMSAR | International Aeronautical and Maritime Search and Rescue Manual |
| IAPH | International Association of Ports and Harbors |
| IATA | International Air Transport Association |
| IBC | Intermediate Bulk Container |
| IBTS | Integrated Bilge Treatment System |
| ICS | International Chamber of Shipping |
| ICSW | International Committee on Seafarers’ Welfare |
| IEA | International Energy Agency |
| IFO | Intermediate Fuel Oil |
| IFSMA | International Federation of Shipmaster’s Association |
| IHO | International Hydro graphic Organization |
| IIP | International Ice Patrol |
| ILG | Industry Lifeboat Group |
| IMB | International Maritime Bureau |
| IMDG | International Maritime Dangerous Goods Code |
| IMHA | International Maritime Health Association |
| IMO | International Maritime Organisation |
| IMOSAR | IMO Search & Rescue manual |
| IMPA | International Marine Purchasing Association |
| IMSBC | International Maritime Solid Bulk Cargo Code |
| IND | Indication |
| INF | Irradiated Nuclear Fuel |
| INTERMODAL | Carriage of a commodity by different modes of transport, i.e. sea, road, rail and air within a single journey. |
| IOPC | International Oil Pollution Compensation |
| IPIECA | International Petroleum Industry Environmental Conservation Association |
| IRTC | International Recommended Transit Corridor |
| ISAN | Indigenous Shipowners Association of Nigeria |
| ISCC | International Ship Security Certificate |
| ISGOTT | International Oil Tanker & Terminal Safety Code |
| ISOA | International Stability Operations Association |
| ISPPC | International Sewage Pollution Prevention Certificate |
| ISTEC | Intertanko Technical Committee |
| ISWG | Intersessional Working Group on Maritime Security |
| ITC | International Tonnage Certificate |
| ITF | International Transport Federation |
| ITOPF | International Tanker Owners Pollution Federation |
| IU | If Used |
| IUATUTC | If Used, Actual Time Used To Count |
| IUHATUTC | If Used, Half Actual Time Used To Count |
| IWL | Institute Warranty Limits |
| KPI | Key Performance Indicator |
| LANE METER | A method of measuring the space capacity of Ro/Ro ships whereby each unit of space (Linear Meter) is represented by an area of deck 1.0 meter in length x 2.0 meters in width. |
| LASH (1) | To hold goods in position by use of Ropes, Wires, Chains or Straps etc. |
| LASH (2) | Lighter Aboard Ship a vessel that loads small barges direct from the water |
| LAT | Latitude |
| LDL | Limiting Danger Line |
| LEG | Legal Committee |
| b | Load Line |
| LMAA | London Maritime Arbitrators Association |
| LNG | Liquefied Natural Gas |
| LOA | Length Overall of the vessel |
| LOP | Lines of Position |
| LOW | Last Open Water |
| LPG | Liquefied Petroleum Gas |
| LRIT | Long Range Identification & Tracking of Ships |
| LS (or LUMPS) | Lumpsum |
| LSA | Life Saving Appliances |
| LSD | Lashed Secured Dunnaged |
| LT | Liner Terms |
| LTI | Lost Time Injury |
| LTIF | Loss Time Injury Frequency |
| LW | Low Water |
| LWC | Lost Workday Case |
| LYCN | Laycan (Layday Canceling Date) |
| M/V | Motor Vessel |
| MAIB | Marine Accident Investigation Branch |
| MB | Merchant Broker |
| MBL | Minimum Breaking Load |
| MBM | Multi-Buoy Moorings |
| MCA | Maritime Coastguard Agency (United Kingdom) |
| MDO (DO) | Marine Diesel Oil |
| MEPC | Maritime Environment Pollution Comittee |
| MERSAR | Merchant Ship Search & Rescue Manual |
| MFAG | Medical First Aid Guide |
| MIN/MAX | Minimum/Maximum (cargo quantity) |
| MIO | Marine Information Object |
| MMSI | Maritime Mobile Service Identity |
| MNLO | Merchant Navy Liaison Officer |
| MOB | Man Overboard |
| MOC | Management Of Change |
| MODU | Mobile Offshore Drilling Unit |
| MOLCHOPT | More or Less Charterers Option |
| MOLOO | More or Less Owners Option |
| MSC | Maritime Safety Committee |
| MSDS | Material Safety Data Sheet |
| MSI | Maritime Safety Information |
| MSL | Maximum Securing Load |
| MSL | Mean Sea Level |
| MT | Metric Ton (i.e. 1,000 kilos / 2204.6lbs) |
| MTC | Medical Treatment Case |
| MTOTS | Marine Terminal Operators Training System |
| MTSC | Marine Technical Sub-Committee |
| NAABSA | Not Always Afloat But Safely Aground |
| NARSUC | Navigation and Routeing Sub-Committee |
| NCB | National Cargo Bureau |
| NCEC | National Chemical Emergency Centre |
| NCMM | Norwegian Centre for Maritime Medicine |
| NDA | Non Discharge Area |
| NESTING | Implies that cargo is presented stacked in the contour of similarly shaped cargo, it may be likened to a stack of plates. |
| NIS | Non Indigenous Species |
| NLS | Noxious Liquid Substances |
| NON-REVERSIBLE | (Detention). If loading completed sooner than expected, then saved days will not be added to discharge time allowed. |
| NOR | Notice of Readiness |
| NPDES | National Pollutant Discharge Elimination System |
| NPRM | Notice of Proposed Rule Making |
| NRT | Net Registered Tonnage |
| NTVRP | Non Tank Vessel Response Plan |
| NUC | Not Under Command |
| NYPE | New York Produce Exchange |
| OBQ | On Board Quantity |
| OBS | Observation |
| OCIMF | Oil Company International Marine Forum |
| OCM | Oil Content Monitor |
| ODMCS | Oil Discharge Monitoring & Control Systems |
| ODME | Oil Discharge Monitoring Equipment |
| ODS | Ozone Depleting Substances |
| OEL | Occupational Exposure Limit |
| OFAC | Office of Foreign Assets Control |
| OFG | Offshore Floating Group |
| OHG | Offshore Hose Guidelines |
| OIC | Officer in Charge |
| OMC | Offshore Marine Committee |
| OMOG | Offshore Maritime Operations Group |
| ONI | Office of Naval Initiative |
| OO | Owners Option |
| OPA | Oil Pollution Act |
| OPRC | Oil Pollution Preparedness, Response and Cooperation |
| ORS | Open Reporting System |
| OSH | Open Shelter Deck |
| OTF | Offshore Terminal Forum |
| OVID | Offshore Vessel Inspection Database |
| OVIQ | Offshore Vessel Inspection Questionnaire |
| OVMSA | Offshore Vessel Management and Self Assessment |
| OWS | Oil Water Separator |
| OWS | Owners |
| PARS | Piracy Attack Risk Surface |
| PASTUS | Past Us |
| PC | Period of Charter |
| PCASP | Privately Contracted Armed Security Personnel |
| PCGO | Part Cargo |
| PCT | Percent |
| PDCA | Plan Do Check Act |
| PDPR | Per Day Pro Rata |
| PER | Period |
| PERDIEM | Per Diem By the Day |
| PFG | Piracy Focus Group |
| PHPD | Per Hatch Per Day |
| PLEM | Pipeline End Manifold |
| PMSC | Private Maritime Security Contractor |
| POEA | Philippine Overseas Employment Administration |
| PPD | Permanent Partial Disability |
| PPE | Personal Protective Equipmeny |
| PRATIQUE | License or permission to use a port |
| PSI | Pounds Per Square Inch |
| PSIG | Pounds Per Square Inch Gauge |
| PSR | Perils at Sea Revision |
| PTC | Ports & Termincal Committee |
| PTD | Permanent Total Disability |
| PV Valve | Pressure Vacuum Valve |
| PWSA | Ports and Waterways Safety Act |
| QHSE | Quality, Health, Safety & Environment |
| RAM | Risk Assessment Matrix |
| RCDS | Raster Chart Display System |
| RCVR | Receivers |
| RECAAP | Regional Cooperation Agreement of Combating Piracy & Armed Robbery Against Ships in Asia |
| REVERSIBLE (Detention) | If loading completed sooner than expected at load port, then days saved can be added to discharge operations. |
| RIO | Radar Information Overlay |
| RMRGC | Recommendations for Manifolds of Refrigerated for Gas Carriers for Cargoes |
| RNC | Raster Navigational Chart |
| RNLI | Royal National Lifeboat Institution |
| ROB | Remaining On Board |
| RPS | Recruitment Placement Services |
| RRS | Release Retrieval System |
| RT | Revenue Ton (i.e. 1.0 metric Ton or 1.0 cubic meter, whichever is greater). The overall RT is calculated on a line by line basis of the Packing List using the largest amount. The overall freight liability is calculated on the total RT amount, multiplied by the freight rate. |
| RUF | Rules for the Use of Force |
| SALM | Single Anchor Leg Mooring |
| SAMHSA | Substance Abuse and Mental Health Services Administration |
| SART | Search and Rescue Transponder |
| SATPM | Saturday P.M. |
| SATV | Safe Access to Vessels Working Group |
| SB | Safe Berth |
| SCBRA | Speed Reduction and Bunker Consumption Algorithm |
| SCUBA | Self-Containerd Underwater Breathing Apparatus |
| SD (or SID) | Single Decker |
| SEA | Seafarer Employment Agreement |
| SEAFREIGHT | Costs charged for transporting goods over the sea. This does not cover any haulage or loading/discharging costs but the sea transport only. |
| SECA | Sulphur (SOx) Emission Control Area |
| SEEMP | Ships Energy Efficiency Management Plan |
| SELFD | Self Discharging |
| SENC | System Electronic Navigational Chart |
| SF | Stowage factor. Cubic space occupied by one ton (2,240 lbs/1,000 kgs) of cargo. |
| SFG | Special Forces Group |
| SHEX | Sundays/Holidays Excluded |
| SHINC | Sundays/Holidays Included |
| SIGTTO | Society of International Gas Tanker & Terminal Operators |
| SIRE | Ship Inspection Report |
| SKIDS | Are bearers (timber or steel) positioned under cargo to enable fork lift handling at port, and for ease of rigging and lashing on board ship. |
| SL | Bale (capacity) |
| SLA | Safety Level Approach |
| SLF | Stability and Load Lines and on Fishing Vessels’ Safety |
| SMC | Safety Management Certificate |
| SMT | Ship Mean Time |
| SOA | Speed of Advance |
| SOC | Shipper Owned Container |
| SOF | Statement Of Facts |
| SOHSP | Shipboard Occupational Health and Safety Program |
| SOLAS | International Convention for the Safety of Life at Sea |
| SOP | Standard Operating Procedure |
| SP | Safe Port |
| SPM | Self Protection Measures |
| SPM | Single Point Mooring |
| SPMOMG | SPM Operating & Maintenance Guidelines |
| SRBL | Signing and Releasing Bill of Lading |
| SRML | Single Rope Maximum Loading |
| SSAS | Ship Security Alert System |
| SSBA | Surface Supplied Breathing Apparatus |
| SSHEX (or SATSHEX) | Saturdays, Sundays, Holidays Excluded |
| SSHINC | Saturdays, Sundays, Holidays Included |
| SSRS | Ship Security Report System |
| STABILITY | It is paramount that a vessel is stable in all respects at all times. When cargo is loaded / discharged, the stability is monitored by a computer, which takes into account the weight and position of cargo within the vessel. |
| STARBOARD | Right side of a ship when facing the bow |
| STCW | Standards of Training, Certification and Watchkeeping |
| STEM | Subject To Enough Merchandise (Availability of Cargo) |
| STERN | The aft part of a ship |
| STOLGOE | The Safe Transfer of Liquefied Gas in an Offshore Environment |
| STS | Ship to Ship |
| STW | Standards of Training and Watchkeeping |
| SUB | Subject (to) |
| SUPERCARGO | Person employed by a ship owner, shipping company, charterer of a ship or shipper of goods to supervise cargo handling operations. Often called a port captain. |
| SWAD | Salt Water Arrival Draft |
| SWDD | Salt Water Departure Draft |
| SWL | Safe Working Load |
| TC | |
| TCPA | Time to Closest Point of Approach |
| TEU | Twenty Foot Equivalency Unit Standard 20′ Container |
| TLV | Threshold Limit Value |
| TM | Tonnage Measurement |
| TMSA | Tanker Management Self Assessment |
| TPA | Third Party Auditor |
| TPRG | Terminal Policy Review Group |
| TPSG | Terminal Policy Steering Group |
| TRCF | Total Recorded Case Frequency |
| TSGB | Training Ship Golden Bear (California Maritime Academy) |
| TSS | Traffic Separation Scheme |
| TTL | Total |
| TW | Tween Decker |
| UKHO | United Kingdom Hydrographic Office (provides AIO) |
| USC | Unless Sooner Commenced |
| UU | Unless Used |
| UUIUATUTC | Unless Used If Used Actual Time Used To Count |
| VEF | Vessel Experience Factor |
| VEL | Velocity |
| VHF | Very High Frequency |
| VIQ | Vessel Inspection Questionnaire |
| VLOC | Very Large Ore Carrier |
| VOC | Volatile Organic Compound |
| VP | Voyage Plan |
| VPD | Vessel Protection Detachment |
| VPD | Vessel Pays Dues |
| VPQ | Vessel Particulars Questionnaire |
| VRM | Variable Range Marker |
| VTS | Vessel Tracking System |
| WASP | Weather Analysis Service Provider |
| WCCON | Whether Customs Cleared Or Not |
| WCDC | Wind and Current Drag Coefficient Task Group |
| WGS84 | World Geodetic System 1984 |
| WIBON | Whether In Berth Or Not |
| WIFPON | Whether In Free Pratique or not |
| WIPON | Whether In Port Or Not |
| WLTOHC | (distance) Water Line-To-Hatch Coaming |
| WOG | Without Guarantee |
| WPD | Weather Permitting Day |
| WRIC | Wire Rods In Coils |
| WTF | Western Terminal Forum |
| WWD | Weather Working Day |
| WWR | When, Where Ready |
| WWWW | Wibon, Wccon, Wifpon, Wipon |
| YAR | York Antwerp Rules |