What is an MMSI number and how to register one

18 February 2020

Maritime Mobile Service Identity (MMSI) is a unique 9 digit number that is assigned to a (Digital Selective Calling) DSC radio or an AIS unit. Similar to a mobile phone number, your MMSI number is your unique calling number for DSC radios or an AIS unit.

How do I get an MMSI number?

A Maritime Mobile Service Identity (MMSI) number is issued to all new Ship Radio and Ship Portable Radio Licences. You will need to complete a VHF Radio course before you are able to operate a ship’s radio.  If you do not already hold a VHF radio licence you can apply on the online portal.
If you hold an existing Ship Radio or Ship Portable Radio licence you will need to amend your licence and add the relevant piece(s) of equipment. Upon completion of the amendment an MMSI number will be generated and displayed on your licence document.

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