Navigational warnings: reporting and broadcasting hazards at sea

Information for ship owners and operators about the types of hazards that need reporting.


Navigational warnings

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The Maritime and Coastguard Agency is responsible for broadcasting the warnings issued by the UK Hydrographic Office (UKHO) to vessels at sea. Radio broadcasts are made about known and potential risks. This document outlines:

  • how and when warnings are broadcast
  • what kind of activities require a warning
  • how to inform UKHO that a hazard requires a navigational warning
  • broadcast charges to those reponsible for the hazard that’s issued as a warning
Published 1 May 2014