Other
Navigation prohibited 162130Z to 170400Z aug, alternate 172130Z to 180400Z aug in area between 20-51.27N…
Gulf of Tonkin · Vietnam · HYDROPAC 2986/18
- issued
- 2018-08-15 00:54Z
- status
- cancelled 2018-08-18 05:00Z (archive)
- self-cancels
- 2018-08-18 05:00Z
- authority
- HAIPHONG RADIO 150041Z AUG 18.
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
GULF OF TONKIN. VIETNAM. DNC 23. CHART 93650. 1. NAVIGATION PROHIBITED 162130Z TO 170400Z AUG, ALTERNATE 172130Z TO 180400Z AUG IN AREA BETWEEN 20-51.27N 20-48.00N AND 107-07.30E 107-10.20E. 2. CANCEL THIS MSG 180500Z AUG 18.
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2018-08-16 21:30Z | 2018-08-17 04:00Z | — | 6 h 30 |
| 2018-08-17 21:30Z | 2018-08-18 04:00Z | — | 6 h 30 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
34 other warnings in force · see all
Other
Everything the classifier did not place elsewhere. All current other warnings →
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.