Gunnery exercises in progress until 052100Z apr in area bound by 21-18N 132-15E, 21-58N 132-15E, 21-58N…
Philippine Sea · HYDROPAC 1037/21
What this record establishes
Archived notice · 2021-04-05 22:00Z
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 116/21 051538Z APR 21.. Issued 2021-04-05 16:01Z. 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
- Philippine 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.
Current notices and reporting history in the Philippine Sea →
- issued
- 2021-04-05 16:01Z
- status
- Archived notice
- self-cancels
- 2021-04-05 22:00Z
- authority
- NAVAREA XI 116/21 051538Z APR 21.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- Philippine Sea
- position
- 21.633, 132.583
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
PHILIPPINE SEA. DNC 12. 1. GUNNERY EXERCISES IN PROGRESS UNTIL 052100Z APR IN AREA BOUND BY 21-18N 132-15E, 21-58N 132-15E, 21-58N 132-55E, 21-18N 132-55E. 2. CANCEL THIS MSG 052200Z APR 21.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Gunnery and live firing
- Naval or coastal guns firing into a sea area for practice, at stated times.
- 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
5 within 180 nm since 2004 · 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.
- Hazardous operations 1000Z to 1600Z daily 07 thru 13 oct in area bound by 21-40.00N 135-00.00E, 21-15.00N…2022-10-06
- Gunnery exercises 170300Z thru 170800Z mar in area bound by 21-58N 132-50E, 21-49N 132-45E, 21-20N 133-53E,…2010-03-12
- Gunnery exercises 122200Z thru 130800Z dec in area bound by 21-31N 133-39E, 19-03N 132-33E, 19-10N 132-12E,…2008-12-08
- Hazardous operations 230001Z to 230900Z jan within 50 miles of 22-35N 132-30E2004-01-20
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
28 military exercises listed in force · see all
Record snapshot 2026-10-02 04:36Z; 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.