MMSI Maritime Mobile Service Identity - Redningsselskapet/rs-weather GitHub Wiki

A Maritime Mobile Service Identity (MMSI) is a series of nine digits which are sent in digital form over a radio frequency channel in order to uniquely identify ship stations, ship earth stations, coast stations, coast earth stations, and group calls.

Types

There are six kinds of maritime mobile service identities:

Ship station identities
Group ship station identities
Coast station identities
Group coast station identities
SAR aircraft
Navigational aids and craft associated with a parent ship

The initial digits of an MMSI categorize the identity, as defined in by Recommendation M.585.[1] The meaning of the first digit is:

0 Ship group, coast station, or group of coast stations
1 For use by SAR aircraft (111MIDaxx)[note 1][2]
2-7 MMSI's used by individual ships, beginning with an MID:
2 Europe (e.g., Italy has MID 247; Denmark has MIDs 219 and 220)
3 North and Central America and Caribbean (e.g., Canada, 316; Panama, 351 through 357, plus 370 through 373; United States, 303(Alaska), 338(domestic), plus 366 through 369)
4 Asia (not the southeast) (e.g., PRC, 412, 413, and 414; Maldives, 455)
5 Oceania, & (Australia, 503; New Zealand, 512)
6 Africa (Eritrea, 625)
7 South America (Peru, 760)
8 Handheld VHF transceiver with DSC and GNSS[3]
9 Devices using a free-form number identity:[2] Search and Rescue Transponders (970yyzzzz)[note 2][4][note 3][5] Man overboard DSC and/or AIS devices (972yyzzzz)[note 2] 406 MHz EPIRBs fitted with an AIS transmitter (974yyzzzz)[note 2] craft associated with a parent ship (98MIDxxxx)[note 4] navigational aids (AtoNs; 99MIDaxxx)[note 5]

MMSI for norwegian vessels begins with (midxxxxxx)