Exercises
Hazardous operations 312300Z oct to 012200Z nov, alternate 012300Z to 022200Z nov in area between 20-30N…
Gulf of Tonkin · Vietnam · HYDROPAC 3706/17
- issued
- 2017-10-30 05:57Z
- status
- cancelled 2017-11-02 23:00Z (archive)
- self-cancels
- 2017-11-02 23:00Z
- authority
- HAIPHONG RADIO 300540Z OCT 17.
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
GULF OF TONKIN. VIETNAM. DNC 23. 1. HAZARDOUS OPERATIONS 312300Z OCT TO 012200Z NOV, ALTERNATE 012300Z TO 022200Z NOV IN AREA BETWEEN 20-30N 20-53N AND 107-24E 107-48E 2. CANCEL THIS MSG 022300Z NOV 17.
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2017-10-31 23:00Z | 2017-11-01 22:00Z | — | 23 h |
| 2017-11-01 23:00Z | 2017-11-02 22:00Z | — | 23 h |
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
35 military exercises in force · see all
Exercises
Gunnery, firing and naval exercise areas. All current military exercises →
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.