LRIT Long Range

Performance Standards – LRIT

LRIT stands for Long Range Identification and Tracking. While meeting the general requirements for ship borne radio equipment forming part of the global maritime distress and safety system (GMDSS) and for electronic navigational aids, the LRIT should comply with the following minimum requirements:

IMO PERFORMANCE STANDARDS FOR LONG RANGE IDENTIFICATION AND TRACKING SYSTEM (LRIT)

Operational requirements

  1. It should be capable of transmitting the ship’s LRIT information at 6-hour intervals to an LRIT Data Centre automatically and without human intervention on board the ship.
  2. It should be capable of being configured remotely to transmit LRIT information at variable intervals.
  3. It should be capable of transmitting LRIT information following receipt of polling commands.
  4. It should be interfaced directly to the ship borne global navigation satellite system equipment, or have internal positioning capability.
  5. It should be supplied with energy from the main and emergency source of electrical power

Application Service Providers

An ASP should provide a communication protocol interface between the Communication Service Providers and the LRIT Data Centre. In the process it will ensure the following minimum functions:

  1. Remote integration of the ship borne equipment into an LRIT Data Centre.
  2. Automatic configuration of transmission of LRIT information.
  3. Automatic modification of the interval of transmission of LRIT information.
  4. Automatic suspension of transmission of LRIT information.
  5. On-demand transmission of LRIT information; and automatic recovery and management of transmission of LRIT information.
  6. Collection, storage and routeing of LRIT information in a reliable and secure manner.

Recognition of Application Service Providers

Application Services Provider(s) (ASPs) providing services to:

  1. A National LRIT Data Centre should be recognized by the Contracting Government establishing the centre.
  2. A Regional or a Cooperative LRIT Data Centre should be recognised by the Contracting Governments establishing the centre. In such a case, the arrangements for recognizing the ASPs should be agreed amongst the Contracting Governments establishing the centre.
  3. An International LRIT Data Centre should be recognized by the Committee.

Contracting Governments should provide to the Organization a list with the names and contact details of the ASPs they recognize together with any associated conditions of recognition and thereafter should, without undue delay, update the Organization as changes occur.

Communications Service Providers

Communications Service Providers (CSPs) provide services which link the various parts of the LRIT system using communications protocols in order to ensure the end-to-end secure transfer of the LRIT information. A CSP may also provide services as an ASP.

LRIT Data Centres

All LRIT Data Centers should be capable of carrying out following functions:

1. Establishing and continuously maintaining systems which ensure, at all times, that LRIT Data Users are only provided with the LRIT information.

2. Collecting LRIT information from ships instructed by their Administrations to transmit the LRIT information to the centre.

3. Obtaining, when requested to provide LRIT information transmitted by ships other than those which transmit the information to the centre, LRIT information from other LRIT Data Centers through the International LRIT Data Exchange.

4. Making available, when requested to provide LRIT information transmitted by ships which transmit the information to the centre, LRIT information to other LRIT Data Centers through the International LRIT Data Exchange.

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5. Executing requests received from LRIT Data Users for polling of LRIT information or for change(s) in the interval(s) of transmission of LRIT information by a ship or a group of ships transmitting the information to the centre.

6. Relaying, when required, requests received from LRIT Data Users through the International LRIT Data Exchange to the other LRIT Data Centers for polling of LRIT information or for change(s) in the interval(s) of transmission of LRIT information by a ship or a group of ships not transmitting the information to the centre.

7. Executing requests, received through the International LRIT Data Exchange, from other LRIT Data Centers for polling of LRIT information or for change(s) in the interval(s) of transmission of LRIT information by a ship or a group of ships transmitting the information to the centre.

8. Disseminating, upon request, to LRIT Data Users the LRIT information they are entitled to receive in accordance with the agreed arrangements and notify the LRIT Data User and the Administration when a particular ship stops transmitting LRIT information.

9. Archiving LRIT information from ships which transmit the information to the centre, for at least one year and until such time as the Committee reviews and accepts the annual report of the audit of its performance by the LRIT Coordinator. However, the archived LRIT information should provide a complete record of the activities of the centre between two consecutive annual audits of its performance.

10. Ensuring using appropriate hardware and software, that LRIT information is backed-up at regular intervals, stored at suitable off-site location(s) and available as soon as possible in the event of disruption to ensure continuity of service.

All Regional or Cooperative LRIT Data Centers and the International LRIT Data Centre should only internally route LRIT information transmitted by ships entitled to fly the flag of the Contracting Governments.

The performance of all LRIT Data Centers should be audited by the LRIT Coordinator.

All LRIT Data Centers should cooperate and make available to the LRIT Coordinator the information required to enable the satisfactory completion of an audit of their performance.

National, Regional or Cooperative and International Data Centres

  • National LRIT Data Centre is established by a Contracting Government.
  • Regional or a Cooperative LRIT Data Centre is established by a group of Contracting Governments.
  • National, Regional and Cooperative LRIT Data Centers may also serve as a National, Regional or Cooperative Vessel Monitoring System (VMS) and may require, as VMS, the transmission from ships of additional information, or of information at different intervals, or of information from ships which are not required to transmit LRIT information. VMSs may also perform other functions.
  • If a National, Regional or Cooperative LRIT Data Centre collects additional information from ships, it should transmit only the required LRIT information to the other LRIT Data Centers through the International LRIT Data Exchange.
  • International LRIT Data Centre is recognized and established by the Committee. Contracting Governments not participating in a National, Regional or Cooperative LRIT Data Centre, or Contracting Governments having an interest in the establishment of an International LRIT Data Centre cooperate, under the coordination of the Committee, with a view to ensuring its establishment.
  • Ships, other than those which are required to transmit LRIT information to a National, Regional or Cooperative LRIT Data Centre, should transmit the required LRIT information to the International LRIT Data Centre.
  • International LRIT Data Centre may, upon request, collect additional information from ships entitled to fly the flag of an Administration on the basis of specific arrangements concluded with the Administration concerned.
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International LRIT Data Exchange

International LRIT Data Exchange is recognized and established by the Committee, under its coordination and cooperation from Contracting Governments.

The International LRIT Data Exchange carries out following functions:

1. Routeing LRIT information between LRIT Data Centres using the information provided in the LRIT Data Distribution Plan.

2. Providing connectivity to all LRIT Data Centers and the LRIT Data Distribution Plan server.

International LRIT Data Exchange does not have the capability to archive LRIT information or the capability to view or access the LRIT information.

The performance of the International LRIT Data Exchange should be audited by the LRIT Coordinator.

The International LRIT Data Exchange should cooperate and make available to the LRIT Coordinator the information required to enable the satisfactory completion of an audit of its performance.

LRIT Data Distribution Plan

LRIT Data Distribution Plan is established and maintained by the Organization. The Organization also hosts, builds, operates and maintains the LRIT Data Distribution Plan server.

The LRIT Data Distribution Plan includes a list indicating the unique LRIT identities of Contracting Governments, Search and Rescue services entitled to receive LRIT information, LRIT Data Centers, the International LRIT Data Exchange, ASPs, the LRIT Data Distribution Plan server and the LRIT Coordinator.

LRIT Coordinator

The LRIT Coordinator should be appointed by the Committee. The LRIT Coordinator should assist in the establishment of the International LRIT Data Centre and/or International LRIT Data Exchange.

The LRIT Coordinator should undertake a review of the performance of the LRIT system taking into account the provisions of regulation SOLAS Chapter V/19-1, the present performance standards, the technical specification for the LRIT system and any related decisions of the Committee and should report its findings to the Committee at least annually.

In this respect, the LRIT Coordinator should on an annual basis:

  1. Review the performance of ASPs (or CSPs when they act as ASPs) providing services to the International LRIT Data Centre.
  2. Audit the performance of all LRIT Data Centers based on archived information and their fee structures.
  3. Audit the performance of the International LRIT Data Exchange and its fee structure, if any.
  4. And verify that Contracting Governments and Search and Rescue services receive only the LRIT information they have requested and are entitled to receive.

LRIT system performance

  • LRIT information should be available to an LRIT Data User within 15 min of the time it is transmitted by the ship.
  • On-demand LRIT information should be provided to an LRIT Data User within 30 min of the time the LRIT Data User requested the information.

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