Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1403 – Revised NAVTEX Manual – (23 May 2011) - Annex - 2 Navtex Service - 2.1 Introduction
2.1 Introduction
2.1.1 NAVTEX provides shipping with navigational and meteorological warnings, meteorological forecasts and other urgent information (as listed in Table 1, Section 5) by automatic display or print-out from a dedicated receiver. It is suitable for use in all sizes and types of ships. Figure 1 illustrates the way the service is typically structured.
2.1.2 NAVTEX is a component of the IMO/IHO World-Wide Navigational Warning Service (WWNWS) defined by IMO Assembly resolution A.706(l7), as amended, and the WMO Manual on Marine Meteorological Services, Part 1bis, Provision of warnings and weather and sea bulletins (GMDSS application). It has also been included as an element of the Global Maritime Distress and Safety System (GMDSS).
2.1.3 In the GMDSS, a NAVTEX receiving capability is part of the mandatory equipment which is required to be carried in certain vessels under the provisions of the International Convention for the Safety of Life at Sea (SOLAS), 1974, as amended.
2.1.4 Authority for co-ordinating the use of the frequencies 518 kHz, 490 kHz and 4209·5 kHz for NAVTEX services worldwide was effectively delegated by ITU to IMO at WRC-95 through Resolution 339. This was reaffirmed at WRC-97. IMO has vested responsibility for the overall management and co-ordination of the global NAVTEX services in its Co-ordinating Panel on NAVTEX Services. The co-ordination function of the panel with respect to National NAVTEX broadcasts on 490 kHz and 4209·5 kHz is limited to the allocation of transmission identification charactersfootnote. The Terms of Reference for this panel are attached at Annex 1. It shall be noted that the provisions of the NAVTEX manual do not apply when planning a national NAVTEX service on other nationally assigned frequencies.
2.1.5 Details of operational and planned NAVTEX services are published periodically in the various national lists of radio signals, in an annex to the International Telecommunication Union's (ITU) List IV – List of coast stations and special service stations, and in the GMDSS Master Plan published by IMO in its series of GMDSS Circulars.
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