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Navigation prohibited 040200Z to 04500Z jul in area between 20-42.00N 20-45.83N and 107-05.00E 107-07.50E

Gulf of Tonkin · Vietnam · HYDROPAC 1993/16

issued: 2016-07-04 00:51Z
status: cancelled 2016-07-04 06:00Z (archive)
self-cancels: 2016-07-04 06:00Z
authority: HAIPHONG RADIO 040031Z JUL 16.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

GULF OF TONKIN.
VIETNAM.
DNC 23.
CHART 93620.
1. NAVIGATION PROHIBITED 040200Z TO 04500Z JUL
   IN AREA BETWEEN
   20-42.00N 20-45.83N AND 107-05.00E 107-07.50E.
2. CANCEL THIS MSG 040600Z JUL 16.

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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.