| IHB | International Hydrographic Bureau |
| EEZ | Exclusive economic zone |
| SMS | Safety management system |
| ABS | American Bureau of Shipping |
| OCIMF | Oil Companies International Marine Forum |
| ISSA | International Ship Supplies Association |
| IMPA | International Maritime Pilots' Association |
| ICS | International Chamber of Shipping |
| USCG | United States Coast Guard |
| Colreg | International Convention on Collision Regulations, IMO |
| OPRC | International Convention on Oil Pollution Preparedness, Response and Co-operation, IMO |
| MERSAR | Merchant Ship Search and Rescue Manual |
| ISM code | International Safety Management Code, IMO |
| ILO | International Labour Organisation |
| GL | Germanischer Lloyd |
| SOLAS | International Convention for Safety of Life at Sea,IMO |
| AMVER | Automated Mutual-Assistance Vessel Rescue |
| OCED | Organisation for Economic Cooperation and Development |
| ITF | International Transport Workers Federation |
| IMPA | International Marine Purchasing Association |
| IFSMA | International Federation of Ship Masters' Associations |
| WHO | World Health Organisation |
| CoSWP | Code of Safe Working Practices For Merchant Seamen |
| SIRE | Ship's inspection report: a database system of the OCIMF |
| MOU | Memorandum of understanding |
| ISO | International Standards Organisation |
| IMDG code | International Maritime Dangerous Goods Code, IMO |
| GMDSS | Global maritime distress and safety system |
| SOPEP | Shipboard Oil Pollution Emergency Plan |
| BV | Bureau Veritas |
| OPA90 | Oil Pollution Act of 1990 (USA) |
| MARPOL | International Convention for the Prevention of Pollution from Ships, IMO |
| INTERTANKO | International Association of Independent Tanker Owners |
| IGC code | International Code for the Construction and Equipment of Ships carrying Liquefied Gases in Bulk,IMO |
| WMO | World Meteorological Organisation |
| DNV | Det Norske Veritas |
| SMC | Safety management certificate (as per ISM Code) |
| MSC | Marine Safety Committee, IMO |
| ISPS | Code international pour la sûreté des navires et des installations portuaires |
| IMO | International maritime organisation |
| IBC | International Code for the Construction and Equipment of Ships carrying Dangerous Chemicals in Bulk, IMO |
| STCW | International Convention on Standards of Training,Certification and Watchkeeping, IMO |
| CIRM | International radio maritime committee |
| OPEC | Organisation of Petroleum Exporting Countries |
| MEPC | Marine Environment Protection Committee, IMO |
| ISGOTT | International Safety Guide for Oil Tankers and Terminals |
| SCBA | Self contained breathing apparatus |
| AIS | Automatic identification system |
| NOR | Notice of readiness |
| LNG | Liquefied natural gas |
| UTC | Universal time (coordinated) |
| IFO | Intermediate Fuel Oil |
| SWL | Safe working load |
| DP | Dynamic positioning |
| RDF | Radio direction finder |
| Marisat | Maritime satellite system |
| VTIS | Vessel traffic information system |
| LCD | Liquid crystal display |
| UEL | Upper explosive limit |
| EPIRB | Emergency position indicating radio beacon |
| SDW | Summer dead weight |
| ASN | Appel Sélectif Numérique |
| OMBO | One man Bridge Operation |
| LOA | Length over all |
| VDR | Voyage data recorder |
| IBCS | Integrated bridge control system |
| TEU | Twenty feet equivalent unit |
| DR | Dead reckoning |
| ROV | Remotely Operated Vehicle |
| MDO | Marine Diesel Oil |
| VTSS | Vessel traffic separation scheme |
| LED | Light emitting diode |
| UMS | Universal Measurement System |
| GPS | Global positioning system |
| SPM | Single point mooring |
| ARPA | Automatic Radar Plotting Aids |
| OOW | Officer of the watch |
| LOC | Letter of credit, letter of compliance (USCG) |
| VPP | Variable pitch propeller |
| IGS | Inert gas system |
| TF | Tropical fresh load line |
| DWT | Deadweight tons |
| SAR | Search and rescue |
| NM | Nautical mile |
| LEL | Lower explosive limit |
| UPS | Uninterrupted power supply |
| HBL | Hydrostatic Balanced Loading |
| SSO | Ship security officer |
| COW | Crude oil washing |
| POB | Pilot on board/persons on board |
| LPG | Liquefied petroleum gas |
| VRP | Vessel response plan |
| LBP | Length between perpendiculars |
| TPI | Tons per inch immersion |
| ECS | Electronic chart system |
| OSV | Offshore Support Vessel Navire de support offshore |
| LASH | Lighter aboard ship Porte barges |
| AHTV | Anchor Handling Tug Vessel |
| VLCC | Very large crude carrier Pétrolier de 200 à 300.000 tonnes |
| RIAS | Remorqueur d'Intervention d'Assistance et de Sauvetage |
| OBC | Open bulk carrier Vraquier à pont ouvert |
| FPSO | Floating production,storage and offloading system |
| T/T | Turbine tanker Navire citernes à turbines |
| PCC | Pure car carrier Transport de voitures |
| MPSV | Multi Purpose Supply Vessel |
| DSV | Diving Support Vessel |
| RO/RO | Roll on/Roll off Navires rouliers |
| OBO | ore/bulk/oil carrier Minéralier/vraquier/pétrolier |
| FSIV | Fast Support & Intervention Vessel |
| UBS | universal bulk ship Vraquier |
| PCTC | Pure car & truck carrier Transports de voitures camions et engins roulants |
| M/T | Motor tanker Navire citernes à moteur |
| ERRV | Emergency Response & Rescue Vessel |
| ROV | Remote operated vehicle Véhicule télécommandé |
| O/O | ore/oil carrier Minéralier/pétrolier |
| FSU | Floating Storage Unit Unité de stockage flottante |
| AFRAMAX | Tanker <80.000 tonnes |
| ULCC | Ultra large crude carrier Pétrolier de plus de 300.000 tonnes |
| PSV | Platform supply vessel Navire de service aux plateformes |
| M/V | Motor vessel Navire à moteur |
| FCC | Fully cellular containership |
| SUBC | self-unloading bulk carrier Vraquier auto déchargeant |