| AIS | Automated Identification System |
| BlueMassMed | EU pilot project for Mediterranean Maritime Surveillance |
| CFCA | Community Fisheries Control Agency |
| CHENS | Chiefs of European Navies |
| CIS | Communications and Information Systems |
| CISE | Common Information Sharing Environment |
| CJOS COE | Combined Joint Operations from the Sea Centre of Excellence |
| CleanSeaNet | Satellite-based oil spill detection |
| CMPD | Crisis Management Planning Directorate |
| COTS | Commercial off-the-shelf |
| CSDP | Common Security and Defence Policy |
| CSN DC | CleanSeaNet Data Centre |
| CSUI | Common Standard User Interface |
| DG 8 | Directorate 8 - Defence aspects |
| DG 9 | Directorate 9 - Civilian Crisis Management |
| DG MARE | EU Directorate General for Maritime Affairs & Fisheries |
| EC | European Commission |
| ECSA | European Shipowners' Association |
| EEZ | Exclusive Economic Zone |
| EDA | European Defence Agency |
| EMSA | European Maritime Safety Agency |
| EMODNET | European Marine Observation & Data Network |
| ESA | European Space Agency |
| EU | European Union |
| EUCCIS | EU Command and Control Information System |
| EULA | End User License Agreement |
| EUMC | EU Military Committee |
| EUMS | EU Military Staff |
| EUROSUR | European Border Surveillance System |
| EUSC | European Union Satellite Centre |
| FoS | Federation of Systems |
| FRONTEX | European Agency for the Management of Operational Co-operation at the External Borders of the MSs of the EU |
| GOTS | Government off-the-shelf |
| HF | High Frequency |
| IALA | International Association of Marine Aids to Navigation and Lighthouse Authorities |
| ICAO | International Civil Aviation Organisation |
| ICC | International Camber of Commerce |
| IFC | International Fusion Centre |
| IMB | International Maritime Bureau |
| IMO | International Maritime Organisation |
| IMP | Integrated Maritime Policy |
| INFOSEC | Information Security |
| ISO | International Standards Organisation |
| ISPS | International Ship and Port Security |
| JIATF(S) | Joint Inter-Agency Task Force (South) |
| LINUX | A free and open source family of operating systems for personal computers, based on voluntary contributions of a great number of independent programmers |
| LRIT | Long Range Identification and Tracking |
| MAOC(N) | Maritime Analysis & Operations Centre Narcotics |
| MARBORSUR | Maritime Border Surveillance |
| MARSUNO | Maritime Surveillance North |
| MARSUR | Maritime Surveillance |
| MDA | Maritime Domain Awareness |
| MCC | Maritime Component Commander (NATO) |
| MCCIS | Maritime Command & Control Information System (NATO) |
| MDA | Maritime Domain Awareness |
| MMEA | Malaysian Maritime Enforcement Agency |
| MMSI | Maritime Mobile Service Identity |
| MPA | Maritime Patrol Aircraft |
| MS | Member State of the European Union |
| MSO | Maritime Security Operations |
| MSSIS | Maritime Safety & Security Information System |
| MV | Motor Vessel |
| NACGF | North Atlantic Coast Guard Forum |
| NAVFOR | Naval Force |
| NMCC | National Maritime Coordination Centres |
| OHQ | Operational Headquarters |
| OTH | Over the Horizon |
| RCC | Regional Coordination Centres |
| ReCAAP | Regional Cooperation Agreement on Combating Piracy and Armed Robbery |
| RELEX | Exterior Relations (EU Directorate General) |
| RMP | Recognised Maritime Picture |
| SACT | Supreme Allied Commander Transformation (NATO) |
| SafeSeaNet | EMSA´s Merchant Shipping Information network |
| SAR | Search and Rescue/Synthetic Aperture Radar, depending on context |
| SMSC | Singapore Maritime Security Centre |
| SOLAS | UN Convention on Safety of Life at Sea |
| SoS | System of Systems |
| STIRES | SafeSeaNet Traffic Information Relay & Exchange System |
| SUCBAS | Sea Surveillance Baltic Sea |
| TTW | Territorial Waters |
| UAV | Unmanned Air Vehicles |
| UNCLOS | United Nations Convention on the Law of the Sea |
| VMS | Vessel Monitoring System |
| V-RMTC | Virtual Regional Maritime Traffic Centre |
| WEU | Western European Union |