Exercises
Cancel this msg 171800Z oct 18
Gulf of Tonkin · Vietnam · HYDROPAC 3751/18
- issued
- 2018-10-15 01:24Z
- status
- cancelled 2018-10-17 18:00Z (archive)
- self-cancels
- 2018-10-17 18:00Z
- authority
- HAIPHONG RADIO 150043Z OCT 18.
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
GULF OF TONKIN. VIETNAM. DNC 23 1. HAZARDOUS OPERATIONS 160630Z TO 161700Z, ALTERNATE 170630Z TO 171700Z OCT IN AREA BETWEEN 20-30N 20-53N AND 107-24E 107-48E. 2. CANCEL THIS MSG 171800Z OCT 18.
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2018-10-16 06:30Z | 2018-10-16 17:00Z | — | 10 h 30 |
| 2018-10-17 06:30Z | 2018-10-17 17:00Z | — | 10 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
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.