Underwater ordnance detonations 132200Z to 140300Z oct vicinity: a. 29-48N 128-47E
Eastern China Sea · HYDROPAC 1627/01
What this record establishes
Archived notice · 2001-10-11 14:30Z
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 PATRIOT 281700Z SEP 01; GIH. Issued 2001-10-09 14:03Z. 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
- Eastern China Sea. The parsed report position is 30.150, 129.133. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Request all civilian and military aircraft contact diego garcia tower prior to reaching 300 nm from nkw vortaccancelled by this notice
- Cancel HYDROPAC 1627/01 and this msglater cancellation notice
Current notices and reporting history in the Eastern China Sea →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2001-10-13 22:00Z | 2001-10-14 03:00Z | — | 5 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2001-10-09 14:03Z
- status
- Archived notice
- self-cancels
- 2001-10-14 04:00Z
- authority
- USS PATRIOT 281700Z SEP 01; GIH
- issued by
- USS PATRIOT
- sea
- Eastern China Sea
- position
- 30.150, 129.133
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER ORDNANCE DETONATIONS 132200Z TO 140300Z OCT VICINITY: A. 29-48N 128-47E. B. 30-30N 129-29E. 2. CANCEL HYDROPAC 1622/01. 3. CANCEL THIS MSG 140400Z OCT.
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.
- 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.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROPAC
- The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · ordnance operations
6 within 180 nm since 2001 · 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.
- Underwater ordnance detonations: a. 150900Z to 171459Z nov vicinity of trackline joining 32-04N 127-15E,…2002-11-13
- Underwater ordnance detonations 142200Z to 151459Z nov vicinity of trackline joining 29-28N 130-58E, 29-28N…2002-11-13
- Underwater ordnance detonations 280001Z to 281000Z sep in area bound by 29-58N 126-42E, 29-46N 127-14E,…2002-09-27
- Underwater ordnance detonations 250001Z to 251000Z sep, alternate 270001Z to 271000Z sep in area bound by…2002-09-21
- Underwater ordnance detonations 010001Z to 011000Z feb, alternate 030001Z to 031000Z feb in area bound by…2002-01-29
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 2026-09-30 18:48Z; 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.