What is the primary frequency that is used exclusively for NAVTEX broadcasts internationally?

The frequency used exclusively for NAVTEX broadcasts internationally is 518 kHz. NAVTEX, or Navigational Telex, is a service that provides marine navigation and safety information to ships. The frequency of 518 kHz is part of the medium frequency (MF) band, which is well-suited for long-range communication over water and is specifically designated for this purpose by the International Maritime Organization.

NAVTEX broadcasts include important information such as weather reports, navigational warnings, and other safety messages, which are crucial for ships operating at sea. This dedicated frequency ensures that vessels can receive timely and accurate information while on their voyages, enhancing their safety and efficiency.

While other frequencies may be used for various types of communication or broadcasts, 518 kHz is uniquely utilized for NAVTEX, making it the correct choice for this question.