Exercises
Hazardous operations 100001Z to 101600Z oct, alternate 110001Z to 111600Z oct in area between 20-53N 20-30N…
Gulf of Tonkin · Vietnam · HYDROPAC 3435/17
- issued
- 2017-10-08 03:21Z
- status
- cancelled 2017-10-11 17:00Z (archive)
- self-cancels
- 2017-10-11 17:00Z
- authority
- HAIPHONG RADIO 080001Z OCT 17.
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
GULF OF TONKIN. VIETNAM. DNC 23. 1. HAZARDOUS OPERATIONS 100001Z TO 101600Z OCT, ALTERNATE 110001Z TO 111600Z OCT IN AREA BETWEEN 20-53N 20-30N AND 107-48E 107-24E. 2. CANCEL THIS MSG 111700Z OCT 17.
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2017-10-10 00:01Z | 2017-10-10 16:00Z | — | 15 h 59 |
| 2017-10-11 00:01Z | 2017-10-11 16:00Z | — | 15 h 59 |
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.