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  Home : ITU-R : Terrestrial Services
Radiocommunication Sector (ITU-R)  
Maritime mobile Access and Retrieval System (MARS)
The main objective of the ITU MARS webpage is to provide users with the means to access and retrieve operational information registered in the ITU maritime database. This information has been notified, to the Radiocommunication Bureau, by Administrations of the Member States of the ITU.

The ITU maritime database currently contains information concerning:

  • Ship stations (including those that participate in the Global Maritime Distress and Safety System (GMDSS));
  • Coast stations
  • Addresses of Accounting Authorities;
  • Addresses of Administrations which notify information;
  • MMSI assigned to Search and Rescue (SAR) aircraft; and
  • MMSI assigned to AIS Aids to Navigation (AtoN).
MARS also links to other maritime related sites within the Radiocommunication Bureau and makes available the various notification forms used for the submission of data. In addition, this system provides administrations with the possibility to download a file containing all their ship stations that are currently registered with ITU.

Retrieve data


Information related to the submission of data

The compilation(s) below are provided as a complement to the List(s) and their carriage on board ships is not mandatory.

Appendix 16 of the Radio Regulations stipulate the carriage requirements of the ITU Service Publications, on board ships.

  • Archives - (Compilation of amendments) English only

General Information

Related activities
Future ITU maritime related Service Publications

02/08/10 Radicommunication Bureau updates the Annex to BR Circular Letter (CM/20)
02/06/10 BR Circular Letter (CM/20) - List of Ship Stations and Maritime Mobile Service Identity Assignments (List V)



Mr. A. Mohan DAS
Radiocommunication Bureau, ITU
Tel.: +41 22 730 5007

Additional Links


The data retrievable on this WEB site is based on information provided by the Administrations of ITU Member States. The ITU expressly disclaims any responsibility with respect to the use of this data and for the accuracy of the information contained in the data base, including any defects, failures and omissions of the stations and auxiliary equipment described therein.


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Contact for this page : ITU-R Web Coordinator
Updated : 2014-05-23