Clasification Society Rulefinder 2018 - Version 9.30
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1403 – Revised NAVTEX Manual – (23 May 2011) - Annex - 9 Information Control

9 Information Control

  9.1 The time-shared nature of NAVTEX services imposes the need for strict discipline in controlling the information flow of the broadcast. To achieve this, it is necessary to co-ordinate the messages in each B2 category at each transmitter. In general, all messages shall be brief and clear and avoid duplication. Strict adherence to relevant guidelines such as those in IMO Assembly resolution A.706(17), as amended, the Joint IMO/IHO/WMO Manual on Maritime Safety Information and the WMO Manual on Marine Meteorological Services, Part 1bis, Provision of warnings and weather and sea bulletins (GMDSS application) is recommended, but certain additional operating procedures have also been found necessary:

  • .1 messages in each category shall be broadcast in reverse order of receipt by the NAVTEX Co-ordinator, with the latest being broadcast first; and

  • .2 cancellation messages shall be broadcast once only. The cancelled message shall not be transmitted on the broadcast in which its cancellation message appears.

Parent topic: Annex
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