Hazardous operations
South China Sea · HYDROPAC 1373/11
What this record establishes
Archived notice · 2011-05-13 12:10Z
This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.
- Source and dates
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · USS CARL VINSON 011741Z MAY 11 - CTF 74 041059Z MAY.. Issued 2011-05-06 08:49Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- South China Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Hazardous operationslater cancellation notice
Current notices and reporting history in the South China Sea →
Activity windows · 7 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2011-05-08 22:00Z | 2011-05-10 03:00Z | — | 29 h |
| 2011-05-12 19:00Z | 2011-05-13 23:59Z | — | 28 h 59 |
| 2011-05-13 19:00Z | 2011-05-14 19:00Z | — | 24 h |
| 2011-05-19 19:00Z | 2011-05-21 19:00Z | — | 48 h |
| 2011-05-26 20:00Z | 2011-05-27 19:00Z | — | 23 h |
| 2011-05-28 21:00Z | 2011-05-29 18:00Z | — | 21 h |
| 2011-05-29 22:00Z | 2011-05-30 17:00Z | — | 19 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2011-05-06 08:49Z
- status
- Archived notice
- self-cancels
- 2011-05-30 18:00Z
- authority
- USS CARL VINSON 011741Z MAY 11 - CTF 74 041059Z MAY.
- issued by
- USS CARL VINSON
- sea
- South China Sea
- position
- 12.750, 116.302
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NORTHERN INDIAN OCEAN.
WESTERN NORTH PACIFIC.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS:
A. IN PROGRESS UNTIL 070200Z MAY
IN AREA BOUND BY
08-00N 075-00E, 06-00N 079-00E,
05-00N 079-00E, 05-00N 075-00E.
B. 082200Z TO 100300Z MAY
IN AREA BOUND BY
08-00N 094-30E, 08-00N 097-20E,
06-00N 098-30E, 06-00N 094-30E.
C. 121900Z TO 132359Z MAY
IN AREA BOUND BY
14-00N 113-40E, 14-00N 116-00E,
12-00N 115-00E, 11-00N 113-40E.
D. 131900Z TO 141900Z MAY
IN AREA BOUND BY
14-00N 115-00E, 15-00N 118-00E,
13-30N 119-30E, 11-30N 118-00E,
11-30N 115-00E.
E. 191900Z TO 211900Z MAY
IN AREA BOUND BY
20-00N 115-00E, 20-00N 118-00E,
19-00N 119-00E, 15-30N 119-00E,
15-30N 117-00E.
F. 262000Z TO 271900Z MAY
IN AREA BOUND BY
22-30N 122-00E, 22-30N 127-00E,
19-00N 127-00E, 20-00N 122-30E.
G. 282100Z TO 291800Z MAY
IN AREA BETWEEN
20-00N 16-00N AND 139-00E 145-00E.
H. 292200Z TO 301700Z MAY
IN AREA BETWEEN
20-00N 16-00N AND 146-00E 151-00E.
2. CANCEL THIS MSG 301800Z MAY.
Reading this warning
- Hazardous operations
- NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- Position (degrees and minutes)
- How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · military exercises
15 within 180 nm since 2011 · 0 in the last 12 months · 0 listed in force now
Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.
- Gunnery exercises in progress until 28 mar in area bound by 12-56.08N 119-20.15E, 13-04.07N 119-06.69E,…2024-03-22
- Gunnery exercises 17 thru 24 feb in area bound by 12-56.08N 119-20.15E, 13-04.07N 119-06.69E, 12-51.31N…2024-02-15
- Hazardous operations 17 thru 24 feb in area bound by 13-04.07N 119-06.69E, 12-56.08N 119-20.15E, 12-43.51N…2024-02-14
- Gunnery exercises 26 thru 30 dec in area bound by 13-06.07N 119-06.69E, 12-56.08N 119-20.15E, 12-43.51N…2023-12-25
- Hazardous operations: a. 190030Z to 190130Z oct, alternate 190730Z to 190830Z oct in area bound by 09-02.58N…2019-10-17
- Gunnery exercises 222330Z to 251430Z oct, alternate 252330Z to 261430Z oct in areas bound by: a. 10-24.52N…2018-10-21
Month of issue in the collected archive
All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.
Nearby notices listed in force · within 120 nm
No other collected notice is currently listed in force within this radius. This does not establish safe conditions.
Worldwide in the collected sources
9 military exercises listed in force · see all
Record snapshot 2026-10-03 02:31Z; source collection times vary.
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.