What is issued when there is an immediate safety concern on the waterways?

A Broadcast Notice to Mariners is specifically designed for immediate safety concerns on the waterways. These notices are disseminated quickly and widely, often through broadcast radio. Their purpose is to inform mariners of urgent information that can impact navigation, such as hazards, changes in buoyage, or emergencies that require immediate attention.

Broadcast Notices are particularly critical because they can be issued in real-time and can reach a broad audience, ensuring that all mariners in the affected area are promptly informed and can take necessary precautions. This rapid dissemination of information is vital for maintaining safety and preventing accidents on the water. Other notice types, while important, do not typically convey urgent information with the same immediacy.