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The Coast Guard announced in the Federal Register that as of Aug. 30, 2018 it is ceasing the rebroadcast of HYDROLANT and HYDROPAC navigational warnings over High Frequency Simplex Teletype Over Radio service (HF SITOR). HYDROLANT warnings are navigational warnings categorized by their Atlantic Ocean location. HYDROPAC warnings are navigational warnings categorized by their Pacific Ocean/Pacific Rim location.

There is no requirement for the Coast Guard to rebroadcast this information, although the Coast Guard has been voluntarily doing so for a number of years, and doing so is duplicative of the National Geospatial-Intelligence Agency’s broadcast. The information will continue to be disseminated by the National Geospatial-Intelligence Agency.

For more information, view the Federal Register Notice, or contact Derrick Croinex, Coast Guard chief of Spectrum Management and Telecommunications Policy at 202-475-3551 or derrick.j.croinex@uscg.mil.

This blog is not a replacement or substitute for the formal posting of regulations and updates or existing processes for receiving formal feedback of the same. Links provided on this blog will direct the reader to official source documents, such as the Federal Register, Homeport and the Code of Federal Regulations. These documents remain the official source for regulatory information published by the Coast Guard.