Underwater ordnance detonations 2100Z to 0900Z commencing daily 31 jul thru 04 aug in areas bound by: a.…
Philippine Sea · HYDROLANT 1478/10
What this record establishes
Archived notice · 2010-08-05 10:00Z
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) · PVWA 02 AUG 10.. Issued 2010-08-02 18:05Z. 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.
Related notices and cancellation links
- Cancel HYDROLANT 1478/10 and this msg, msg promulgated in errorlater cancellation notice
Current notices and reporting history in the Philippine Sea →
Activity windows · 5 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2010-07-31 21:00Z | 2010-08-01 09:00Z | — | 12 h |
| 2010-08-01 21:00Z | 2010-08-02 09:00Z | — | 12 h |
| 2010-08-02 21:00Z | 2010-08-03 09:00Z | — | 12 h |
| 2010-08-03 21:00Z | 2010-08-04 09:00Z | — | 12 h |
| 2010-08-04 21:00Z | 2010-08-05 09:00Z | — | 12 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2010-08-02 18:05Z
- status
- Archived notice
- self-cancels
- 2010-08-05 10:00Z
- authority
- PVWA 02 AUG 10.
- issued by
- PVWA
- sea
- Philippine Sea
- position
- 24.847, 131.333
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN NORTH PACIFIC.
ORDNANCE.
1. UNDERWATER ORDNANCE DETONATIONS 2100Z TO 0900Z
COMMENCING DAILY 31 JUL THRU 04 AUG
IN AREAS BOUND BY:
A. 24-23-15N 130-47-52E, 25-26-15N 131-41-52E,
25-13-15N 132-30-52E, 24-00-16N 132-59-52E,
24-00-15N 131-22-38E, 24-07-33N 131-10-25E.
B. 25-41-15N 128-51-53E, 25-48-37N 129-02-19E,
25-44-15N 129-25-52E, 25-44-15N 130-10-52E,
25-43-24N 130-35-52E, 25-41-15N 130-44-52E,
24-53-15N 130-03-52E.
2. CANCEL THIS MSG 051000Z AUG.Reading this warning
- Unexploded ordnance
- Bombs, shells, mines or torpedoes found on the seabed or washed up, and the operations to remove or destroy them.
- 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 · ordnance operations
25 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.
- Torpedo firing exercises 27 jan thru 01 feb during daylight hours within 12 miles of 26-33N 128-53E2012-01-22
- Torpedo firing exercises 15 thru 18 jun during daylight hours within 12 miles of 26-09N 128-39E2011-06-10
- Bombing exercises in progress until 061500Z jan in area bound by 25-23N 132-18E, 23-37N 134-29E, 22-40N…2011-01-06
- Underwater ordnance detonations 2100Z to 0900Z commencing daily 31 jul thru 04 aug in areas bound by: a.…2010-08-02
- Underwater ordnance detonations 2100Z to 0900Z commencing daily 31 jul thru 04 aug in areas bound by: a.…2010-07-28
- Underwater ordnance detonations 2100Z to 0900Z commencing daily 28 thru 30 jul in areas bound by: a.…2010-07-25
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
0 ordnance operations listed in force · see all
Record snapshot 2026-10-02 02:27Z; source collection times vary.
Ordnance
Ordnance disposal, underwater detonations and unexploded ordnance. All current ordnance operations →
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.