Maritime Safety and Security Information System

The Maritime Safety and Security Information System (MSSIS) is an unclassified, near-real-time global data-sharing network designed to enhance maritime domain awareness by enabling participating governments to exchange vessel-tracking and sensor information via Automatic Identification System (AIS). Developed and operated by the U.S. Department of Transportation's Volpe National Transportation Systems Center, MSSIS aggregates data from member states into a central exchange, allowing each contributor to ingest, use and view combined data from other nations while preserving national sovereignty over participation.