# Commission Implementing Regulation (EU) 2019/838 of 20 February 2019 on technical specifications for vessel tracking and tracing systems and repealing Regulation (EC) No 415/2007, Division 3.3.6: Unique identifier

Extent: E+W+S+N.I.

In order to guarantee the compatibility with maritime vessels, the Maritime Mobile Service Identifier (MMSI) number shall be used as a unique station identifier (radio equipment identifier) for the Inland AIS mobile stations.

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Source: https://www.legislation.gov.uk/eur/2019/838/annex/division/3/division/3.3/division/3.3.6 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-838/annex/division-3/division-3.3/division-3.3.6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.