Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1338 – Guidance to Search and Rescue Services in Relation to Requesting and Receiving LRIT Information – (1 March 2011) - Annex – Guidance to Search and Rescue Services in Relation to Requesting and Receiving LRIT Information - 4 Requesting LRIT information
4 Requesting LRIT information
4.1 A SAR service should request, pursuant to the provisions of regulation V/19-1.12 or paragraph 1.3, the provision of LRIT information only via the LRIT Data Centre serving the Contracting Government in whose territory the service is located (the LRIT Data Centre).
4.2 SAR services should request the Contracting Governments in whose territory the service is located to advise them which LRIT Data Centre they should use and to provide them with the contact details of the centre.
4.3 SAR services should also request the Contracting Governments in whose territory the service is located to provide them with any related guidance and instructions the Contracting Government concerned has established in relation to the provision of LRIT information to them.
4.4 SAR services are advised to establish with the LRIT Data Centre they will be using working procedures and arrangements so as to ensure easy and efficient communications and the expedient processing of their requests for LRIT information.
4.5 Regulation V/19-1.12 and paragraph 1.3 specify that the SAR service of Contracting Governments shall be entitled or are allowed to request and receive LRIT information. Thus, the right to request LRIT information is not limited to SAR services established by Parties to the 1979 SAR Convention.
4.5.1 However, SAR services will be able to request and receive LRIT information only if the Contracting Government which has established them has communicated the relevant informationfootnote to the Organization and the related details have been included in the Radiocommunications and Search and Rescue modulefootnote of the Global Integrated Shipping Information System (GISIS) of the Organization.
4.5.2 All LRIT Data Centres other than the centre serving the SAR service concerned and the International LRIT Data Exchange are able to process requests for LRIT information only if the LRIT Data Centre serving the SAR service indicates in the request for information the LRIT ID of the LRIT Data User requesting the information. The LRIT Data Distribution Plan, which assigns the LRIT IDs for LRIT Data Users, is able to assign LRIT IDs to SAR services only if the necessary information is provided in the Radiocommunications and Search and Rescue module of GISIS.
4.6 The provisions of regulation V/19-1.9.1 in relation to the right of an Administration to limit the provision of LRIT information to a Contracting Government requesting such information pursuant to the provisions of regulation V/19-1.8.1.3 do not apply in relation to request of such information by SAR services.
4.7 Regulation V/19-1.12 does not draw any distinction between maritime and aeronautical search and rescue incidents and allows SAR services to request LRIT information, as long as it is for the purpose of the search and rescue of persons in distress at sea.
4.8 A request for the provision of LRIT information for the search and rescue of persons in distress at sea is initiated by the LRIT Data Centre serving the SAR service transmitting a SAR SURPIC message via the International LRIT Data Exchange for broadcast to all LRIT Data Centres. This message requests the most recent data from the databases within all LRIT Data Centres in order to provide the SAR services with the ability to obtain a picture of ships within the geographical area specified by the SAR service requesting the information. In order to determine whether ships within the geographical area specified by the SAR service are transiting towards or away from the specific location the SAR service can request up to the last 4 preset transmission LRIT information from of all ships within the geographical area. All LRIT information which would be provided to the SAR service would be located within the geographical area specified by the SAR service. From that information the SAR service can identify which ships are more favourably positioned to respond to the situation and can poll those ships directly to determine their current locations.
4.9 A request for the provision of LRIT information transmitted by a specific ship when an uncertainty or alert phase might need to be declared or has been declared in relation to the ship in question or those onboard is initiated by the LRIT Data Centre serving the SAR service transmitting a LRIT message (which provides the relevant information) via the International LRIT Data Exchange for broadcast to all LRIT Data Centres. This message can request the most recent LRIT information transmitted by the ship in question or request the polling of the ship or archived LRIT information relating to the specific ship.
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