Gunnery exercises 2300Z to 0800Z commencing daily 10 thru 14 apr in area bound by 38-25N 128-45E, 38-25N…
Japan Sea · HYDROPAC 1072/11
What this record establishes
Archived notice · 2011-04-15 09:00Z
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) · NAVAREA XI 207/11 061146Z APR 11.. Issued 2011-04-06 12:21Z. 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
- Japan 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.
Activity windows · 5 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2011-04-10 23:00Z | 2011-04-11 08:00Z | — | 9 h |
| 2011-04-11 23:00Z | 2011-04-12 08:00Z | — | 9 h |
| 2011-04-12 23:00Z | 2011-04-13 08:00Z | — | 9 h |
| 2011-04-13 23:00Z | 2011-04-14 08:00Z | — | 9 h |
| 2011-04-14 23:00Z | 2011-04-15 08:00Z | — | 9 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2011-04-06 12:21Z
- status
- Archived notice
- self-cancels
- 2011-04-15 09:00Z
- authority
- NAVAREA XI 207/11 061146Z APR 11.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- Japan Sea
- position
- 38.304, 129.171
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SEA OF JAPAN. GUNNERY. 1. GUNNERY EXERCISES 2300Z TO 0800Z COMMENCING DAILY 10 THRU 14 APR IN AREA BOUND BY 38-25N 128-45E, 38-25N 129-30E, 38-10N 129-30E, 38-10N 129-00E, 38-17N 129-00E, 38-17N 128-45E. 2. CANCEL THIS MSG 150900Z APR.
Reading this warning
- Gunnery and live firing
- Naval or coastal guns firing into a sea area for practice, at stated times.
- 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.
- 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.
Collected reports in this area · military exercises
331 within 180 nm since 1999 · 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 0001Z to 0800Z daily 20 thru 24 jun in area bound by 38-15N 129-51E, 38-14N 130-10E,…2011-06-15
- Gunnery exercises 2300Z to 0800Z commencing daily 19 thru 23 jun in area bound by 38-25N 128-45E, 38-25N…2011-06-15
- Gunnery exercises 0001Z to 0800Z daily 13 thru 17 jun in area bound by 38-15N 129-51E, 38-14N 130-10E,…2011-06-08
- Gunnery exercises 2300Z to 0800Z commencing daily 12 thru 16 jun in area bound by 38-25N 128-45E, 38-25N…2011-06-08
- Gunnery exercises 2300Z to 0800Z commencing daily 06 thru 09 jun in area bound by 38-25N 128-45E, 38-25N…2011-06-02
- Gunnery exercises 0001Z to 0800Z daily 07 thru 10 jun in area bound by 38-15N 129-51E, 38-14N 130-10E,…2011-06-02
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
10 military exercises listed in force · see all
Record snapshot 2026-10-03 09:08Z; 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.