4.4 Routeing of maritime distress alerts
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Assembly - IMO Resolution A.1001(25) – Criteria for the Provision of Mobile Satellite Communication Systems in the Global Maritime Distress and Safety System (GMDSS) – (Adopted on 29 November 2007) - Annex – Criteria for the Provision of Mobile Satellite Communication Systems in the Global Maritime Distress and Safety System (GMDSS) - 4 Criteria and Requirements for Earth Stations - 4.4 Routeing of maritime distress alerts

4.4 Routeing of maritime distress alerts

  4.4.1 The satellite system should have reliable communication links to one or more associated MRCCs. These links may be implemented directly between the MRCC and an earth station, or some other suitable point in the system’s network. The arrangements between the system and the MRCC are subject to approval by the national administration.

  4.4.2 The system’s network should be capable of automatically recognizing maritime distress and safety communications and of routeing, as far as possible automatically, maritime distress alerts/calls directly to the associated MRCC, via a highly reliable communication link. In cases where capability exists, the system may route alerts directly to the responsible RCC as defined in the IAMSAR Manual.

  4.4.3 The earth station or other relevant part of the system’s network should be provided with an aural and visual alarm to alert a designated responsible person in the event that automatic connection to the MRCC cannot be achieved within 60 seconds. In this case, all necessary action should be taken to immediately inform the MRCC of the details of the distress alert or call. Personnel should always be available to react to such an alarm so as to ensure that the distress alert or call can be forwarded to an MRCC within 5 minutes of the alarm being triggered. All messages with distress or urgency priority should sound an alarm at the earth station or other relevant part of the system’s network, which should require manual cancellation.

  4.4.4 The MRCC should be provided with reliable communication links to the system’s network for efficient handling of shore-to-ship distress alert relays and distress traffic, preferably via dedicated communication links.


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