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Maritime mobile Access and Retrieval System (MARS)


​​​MARS is a free of charge, online access and retrieval system that allows users to consult the information currently registered in the ITU’s maritime database system. 

This webpage provides operational information of Ship and Coast stations, MMSI assigned to AIS Aids to Navigation and SAR Aircraft, and contact information of Accounting Authorities, that have been notified to the ITU Radiocommunication Bureau by the Administrations of ITU Member States. It is updated on a daily basis,



Ship Stations

Using specific search criteria, such as the ship name, call sign , MMSI, EPIRB Hex Id code, IMO or national registration number,  users can retrieve operational information of ship stations that have been notified to the ITU Radiocommunication Bureau.

This information may be of use  to the maritime community to contact individual ships at sea and/or assist maritime Search And Rescue (SAR) authorities in their activities.

Coast Stations

​​​Using specific search criteria, such as the station name, call sign, MMSI, Administration, transmitting frequencies, frequency bands and the services provided by a coast station, users can retrieve information of coast stations that have been notified to the ITU Radiocommunication Bureau.

The operational information provided may be useful for ships at sea to contact coast stations and also for authorities involved in Search and Rescue (SAR) operations including the Global Maritime Distress and Safety System (GMDSS).





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 database, including any defects, failures and omissions of the stations and auxiliary equipment described therein.