Definition(s)
National NAVTEX Service
National NAVTEX service means the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy using frequencies other than 518 kHz and languages as decided by the Administration concerned
Source: IMO resolution A.1051(27), IMO/WMO Worldwide Met-Ocean Information and Warning Service ‒ Guidance Document, 20 December 2011, International Maritime Organization. Regulatory Guidance