High Quality Content by WIKIPEDIA articles! NAVTEX (Navigational Telex) is an international automated medium frequency direct-printing service for delivery of navigational and meteorological warnings and forecasts, as well as urgent marine safety information to ships. It was developed to provide a low-cost, simple, and automated means of receiving this information aboard ships at sea within approximately 370 km (200 nautical miles) off shore. NAVTEX stations in the U.S. are operated by the United States Coast Guard. There are no user fees associated with receiving NAVTEX broadcasts.