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Navigational warnings broadcast by nga are normally divided into categories, hydrolants and hydropacs (1),…

SPECIAL 1/48

issued: 1948-05-27 00:01Z
status: cancelled 2017-04-20 21:25Z (archive)
authority: (DEPT. OF STATE) (27 MAY 1948)
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NAVIGATIONAL WARNINGS BROADCAST BY NGA ARE NORMALLY DIVIDED INTO CATEGORIES, HYDROLANTS AND HYDROPACS (1), REFERRING RESPECTIVELY, TO THE ATLANTIC AND PACIFIC OCEANS. IT HAS BEEN DETERMINED THERE NOW EXISTS A NEED FOR DISSEMINATING INFORMATION OF GENERAL INTEREST NOT COVERED BY THE ABOVE CATEGORIES. THEREFORE, WITH THIS MESSAGE THE SPECIAL WARNINGS SERIES IS REINTRODUCED. THE MESSAGES WILL BE TRANSMITTED FROM ALL U. S. NAVY AND COAST GUARD STATIONS BROADCASTING HYDROS. 
   (1) IN JANUARY 1977, NGA COMMENCED ISSUING WARNINGS AS NAVAREAS IV AND XII BROADCASTS IN ADDITION TO THE HYDROLANT AND HYDROPAC SERIES.

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Other

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Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.