Exercises
B. 0001Z to 1630Z daily 21 and 22ND jun in area between 20-40.1N 20-52.7N and 107-25.0E 107-36.3E
Gulf of Tonkin · Vietnam · HYDROPAC 2252/18
- issued
- 2018-06-17 23:37Z
- status
- cancelled 2018-06-24 18:00Z (archive)
- self-cancels
- 2018-06-24 18:00Z
- authority
- HAIPHONG RADIO 172300Z JUN 18.
- sea
- South China Sea
- position
- 20.517, 107.812
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
GULF OF TONKIN.
VIETNAM.
DNC 23
1. HAZARDOUS OPERATIONS:
A. 2300Z TO 0200Z COMMENCING DAILY
19 THRU 21 JUN IN AREA BOUND BY
20-30.2N 107-42.7E, 20-36.7N 107-47.8E,
20-31.8N 107-54.7E, 20-25.4N 107-49.6E.
B. 0001Z TO 1630Z DAILY 21 AND 22ND JUN
IN AREA BETWEEN
20-40.1N 20-52.7N AND 107-25.0E 107-36.3E.
C. 0600Z TO 1700Z DAILY 23 AND 24 JUN
IN AREA BETWEEN
20-30N 20-53N AND 107-24E 107-48E.
2. CANCEL THIS MSG 241800Z JUN 18.
Activity windows · 3 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2018-06-19 23:00Z | 2018-06-20 02:00Z | — | 3 h |
| 2018-06-20 23:00Z | 2018-06-21 02:00Z | — | 3 h |
| 2018-06-21 23:00Z | 2018-06-22 02:00Z | — | 3 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
This area · military exercises
27 within 180 nm since 2014 · 0 in the last 12 months · 0 in force now
14
15
19
- Hazardous operations 200500Z to 200930Z dec, alternate 210500Z to 210930Z dec in area bound by 19-12.11N…2019-12-18
- Hazardous operations 232300Z to 240400Z oct in area bound by 18-47.81N 105-57.80E, 18-47.95N 106-02.10E,…2019-10-23
- Hazardous operations 212300Z to 221700Z oct, alternate 0500Z to 1700Z daily 23 and 24 oct in area bound by…2019-10-20
- Hazardous operations in areas bound by: a. 220001Z to 220300Z, 0001Z to 0300Z daily 23 and 24 oct 20-42.6N…2019-10-20
- Hazardous operations 260100Z to 260400Z sep, alternate 270100Z to 270400Z sep in area bound by 20-49.1N…2019-09-24
- Hazardous operations 240630Z to 240930Z, 250001Z to 250430Z, 250630Z to 250930Z and 260001Z to 260430Z sep…2019-09-22
Season · when military exercises happen here
J
F
M
A
M
J
J
A
S
O
N
D
month of issue, all years in the archive
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.