- AIS - Automatic Identification System
- ASP - Application Service Provider
- COTP - Captain of the Port
- CSP - Communications Service Provider
- DHS - Department of Homeland Security
- DOT - Department of Transportation
- DSC - Digital Selective Calling
- EEZ - Exclusive Economic Zone
- GMDSS - Global Maritime Distress and Safety System
- GNSS – Global Navigation Satellite System
- HF - High Frequency
- ICC - Intelligence Coordination Center
- IDC - International Data Center
- IDE - International Data Exchange
- IMO - International Maritime Organization
- ITU - International Telecommunication Union
- LRIT - Long Range Identification and Tracking
- MDA - Maritime Domain Awareness
- MF - Medium Frequency
- MISLE - Marine Information for Safety and Law Enforcement
- MODU - Mobile Offshore Drilling Unit
- MSC - Maritime Safety Committee
- NEPA - National Environmental Policy Act of 1969
- NOA - Notice of Arrival
- NM - Nautical Mile
- NPRM - Notice of Proposed Rulemaking
- NTTAA - National Technology Transfer and Advancement Act
- NVMC - National Vessel Movement Center
- OCS - Outer Continental Shelf
- OMB - Office of Management and Budget
- SAR - Search and Rescue
- SOLAS - International Convention for the Safety of Life at Sea, 1974, as amended
- SOPLAS - V/19-1 SOLAS Chapter V Regulation 19-1
- SSAS - Ship Security Alert System
- VHF - Very High Frequency
- VMS - Vessel Monitoring System
- VTS - Vessel Traffic Service
Notice: The launch of the modernized Local Notices to Mariners (LNMs) and Light List (LL) application will be delayed beyond the scheduled 30 September 2024 launch date as a result of Hurricane Helene. We will post more information as soon as possible.