Maritime Mobile Service Identities
BoatWiki - Definitions
Mar 22, 2023 - Maritime Mobile Service Identities (MMSI) are used to identify a ship, yacht, or coast radio station. These are nine-digit numbers used by automatic identification systems located on the vessel or site involved. MMSIs are managed by the International Telecommunications Union in Geneva, Switzerland.
MMSIs are regulated in a manner similar to radio call signs.
Although mostly utilized by seagoing ships, MMSIs may also apply to larger offshore yachts.
MMSIs are of little consequence to the typical boater, but may prove helpful in tracking yachts that employ such systems.
BoatWiki is your website and it's completely free of charge.
Please assist fellow boaters by wiki-sharing any comments or experiences related to this subject.
Credits and References
Mar 22, 2023 - Page revised.