Exercises
Hazardous operations 0001Z to 0235Z daily 26 thru 28 apr, alternate 290001Z to 290235Z apr in area bound by…
South China Sea · Vietnam · HYDROPAC 1586/18
- issued
- 2018-04-24 00:47Z
- status
- cancelled 2018-04-29 03:35Z (archive)
- self-cancels
- 2018-04-29 03:35Z
- authority
- HAIPHONG RADIO 240030Z APR 18.
- sea
- South China Sea
- position
- 11.760, 109.345
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
SOUTH CHINA SEA. VIETNAM. DNC 11. 1. HAZARDOUS OPERATIONS 0001Z TO 0235Z DAILY 26 THRU 28 APR, ALTERNATE 290001Z TO 290235Z APR IN AREA BOUND BY 11-51.4N 109-17.4E, 11-47.8N 109-27.0E, 11-39.8N 109-23.9E, 11-43.4N 109-14.4E. 2. CANCEL THIS MSG 290335Z APR 18.
Activity windows · 4 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2018-04-26 00:01Z | 2018-04-26 02:35Z | — | 2 h 34 |
| 2018-04-27 00:01Z | 2018-04-27 02:35Z | — | 2 h 34 |
| 2018-04-28 00:01Z | 2018-04-28 02:35Z | — | 2 h 34 |
| 2018-04-29 00:01Z | 2018-04-29 02:35Z | — | 2 h 34 |
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
50 within 180 nm since 2015 · 0 in the last 12 months · 0 in force now
15
19
- Gunnery exercises 070100Z to 070145Z dec, alternate 080100Z to 080145Z dec in area bound by 11-56.75N…2019-12-05
- Hazardous operations 04 dec, alternate 05 and 06 dec in area bound by 11-10N 108-55E, 11-10N 109-05E, 11-00N…2019-12-02
- Gunnery exercises 250001Z to 250230Z, alternate 260001Z to 260230Z oct, in area bound by 12-00N 109-41E,…2019-10-23
- Hazardous operations 092300Z to 101030Z in area bound by 10-04.8N 107-02.5E, 10-08.8N 107-02.5E, 10-08.8N…2019-10-09
- Hazardous operations 2300Z to 1030Z commencing daily 07 thru 09 oct in area bound by 10-08.75N 107-02.50E,…2019-10-09
- Hazardous operations 022300Z to 030300Z, alternate 032300Z to 040300Z oct in area bound by 12-11.30N…2019-10-01
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.