OXXO is a common call sign for all Danish ships. An OXXO telegram is a message of an import\u0002ant nature for all Danish ships from the Danish authorities. The message may be a warning in a crisis or war situation of dangers to navigation in certain areas with guidelines on measures to be taken on that occasion. Or it may be an important message for all Danish ships about, for example, the casting of postal votes in connection with elections in Denmark.

In the so-called FLEET NET, which is a part of the Inmarsat EGC service (Enhanced Group Call), it is possible to transmit the same message to all Inmarsat-C terminals with a common ENID number (EGC Network Identity).

Danish ships with an Inmarsat-C terminal and a call sign ending on 10 (primary station) have been allocated ENID 28941.

The ENID encoding is made by NSSLGLOBAL, which via the earth station EIK in Norway, transmits a signal to the ship’s Inmarsat-C terminal with automatic encoding of the number. Only if the terminal is open and no other traffic has occurred in the moment of transmittance, the ENID number is encoded. Therefore, the code signal is transmitted twice. NSSLGLOBAL does not receive any
receipt that the ENID number has been encoded in the ship terminal.

If the ship’s printer is turned on, the following message will occur on it when the ENID number has
been encoded (depending on the make):

REPORT (number) Page (number) UTC time: (date) (Hour)
ENID 28941 added      
EGC Network ID list      
Soefartsstyrelsen 28941    
1 ENID(s) stored      
REPORT (number)      

In some cases the ENID 28941 may not have been encoded in the ship’s Inmarsat-C terminal due to poor reception facilities or because the number has been blocked by mistake on the ship or the configuration has been changed in some other way.

Furthermore, sometimes the number has been deleted in connection with service/repairs and the primary station (10) and the secondary station (11) have been reversed.

In order to check whether ENID 28941 has been encoded/is active in the primary station (the one with an INM-C number ending on 10), the following is done:

  1. In the menu under OPTIONS-CONFIGURATIONS-END, you can see what ENID numbers
    have been encoded and whether they are ENABLED or DISABLED. ENID 28941 must be ENABLED

  2. Under ROUTING, you can see whether the EGC reports are saved on a diskette or are printed.
    There must be an X at PRINTER

The design of the menu may vary depending on the make of the terminal.

If ENID 28941 not included on the list, a new encoding must be carried out by NSSLGLOBAL. It is possible to contact NSSLGLOBAL here (preferably by e-mail):

Telephone: +45 36 70 36 03
E-mail: info.dk@nsslglobal.com

It would be a great help if information about what satellite the terminal is logged onto is given at the same time.

Subsequently, a new encoding directly to the relevant ship will be carried out via EIK.

This guidance replaces Guidance no. 9162 of 1 January 2007 on important messages (OXXO) via Inmarsat-C and Guidance no. 9174 of 25 April on important messages (OXXO) via Inmarsat-C (guidance no. 1 of 25 April 2002 issued by the Danish Maritime Authority).


Danish Maritime Authority, 28 June 2011
Per Sønderstrup / Hans Aage Nielsen