Exercises
Hazardous operations 132300Z to 141100Z nov, alternate 142300Z to 151100Z nov in area between 20-53N 20-30N…
Gulf of Tonkin · Vietnam · HYDROPAC 3915/17
- issued
- 2017-11-12 12:58Z
- status
- cancelled 2017-11-15 12:00Z (archive)
- self-cancels
- 2017-11-15 12:00Z
- authority
- HAIPHONG RADIO 121232Z NOV 17.
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
GULF OF TONKIN. VIETNAM. DNC 23. 1. HAZARDOUS OPERATIONS 132300Z TO 141100Z NOV, ALTERNATE 142300Z TO 151100Z NOV IN AREA BETWEEN 20-53N 20-30N AND 107-24E 107-48E. 2. CANCEL THIS MSG 151200Z NOV 17.
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2017-11-13 23:00Z | 2017-11-14 11:00Z | — | 12 h |
| 2017-11-14 23:00Z | 2017-11-15 11:00Z | — | 12 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.