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being interfaced with an external global navigation satellite receiver (eg
GPS), or have an internal positioning capability.

It must also meet a number of specific environmental and installation
requirements, including the general requirements for shipborne radio
equipment forming part of the global maritime distress and safety system
(GMDSS) set out in IMO resolution A.,694(17).

4 The LRIT Information
The LRIT Information that is required to be transmitted by the ship is
specified in new SOLAS Regulation V/19-1.5 and is limited to:
identity of the ship;
position of the ship (latitude and longitude);
date and time of the position provided.

5 Communication Service Provider(s)
The Communication Service Provider (CSP) provides the
communications services which transfer LRIT data securely from ship to
the ASP on shore. The means of communication will often be via satellite,
but the LRIT system itself is independent of the means of communication,
and any method can be used, as long as the correct packet of data arrives
on shore at the right periodicity or when demanded. The IMO
Performance Standard requires that:

“The shipboard equipment should transmit the LRIT information using a
communication system which provides coverage in all areas where the
ship operates.”

6 Application Service Provider(s)

The Application Service Provider (ASP) receives the LRIT reports
transmitted by the ship via the CSP, adds certain additional information
to each report, and forwards the reports to the Data Centre nominated by
the ship’s Flag State. The information to be added to each LRIT report by
the ASP includes:

IMO ship identification number and MMSI for the ship;
name of the ship;

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