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.
Navigation Center
United States Coast Guard
U.S. Department of Homeland Security

Long Range Identification and Tracking (LRIT) Acronyms and Abbreviations

  • 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

LRIT "Shipborne Equipment Information Page" >>