Underwater ordnance detonations 302300Z apr to 010600Z may vicinity of tracklines between: a. 14-39.0N…
North Pacific Ocean · HYDROPAC 749/03
What this record establishes
Archived notice · 2003-05-01 07:00Z
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) · CTF 280125Z APR 03; AUSSAR POR EGC#2038 290211Z APR 03. Issued 2003-04-29 05:50Z. 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
- North Pacific Ocean. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Red star sighted vicinity 34-45S 122-37E at 281555Z aprcancelled by this notice
Current notices and reporting history in the North Pacific Ocean →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2003-04-30 23:00Z | 2003-05-01 06:00Z | — | 7 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2003-04-29 05:50Z
- status
- Archived notice
- self-cancels
- 2003-05-01 07:00Z
- authority
- CTF 280125Z APR 03; AUSSAR POR EGC#2038 290211Z APR 03
- issued by
- CTF
- sea
- North Pacific Ocean
- position
- 15.000, 146.690
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER ORDNANCE DETONATIONS 302300Z APR TO 010600Z MAY VICINITY OF TRACKLINES BETWEEN: A. 14-39.0N 146-30.1E AND 15-21.0N 146-30.0E. B. 15-21.0N 146-52.8E AND 14-39.0N 146-52.8E. 2. CANCEL HYDROPAC 747/03(75), SEARCH SUSPENDED. 3. CANCEL THIS MSG 010700Z MAY.
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.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- 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
21 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.
- Underwater ordnance detonation 2300Z to 0600Z daily 23 and 24 apr in 13-16.20N 144-22.80E2024-04-18
- Underwater ordnance detonation 302200Z to 310600Z mar in area within three miles of 13-35.97N 144-55.64E2023-03-23
- Underwater ordnance detonation 162200Z to 170300Z mar in area within three miles of 13-35.00N 144-55.00E2023-03-16
- Underwater ordnance detonations 0001Z to 0400Z daily 11 and 12 nov vicinity 13-23N 144-35E2011-11-10
- Underwater ordnance detonations 210100Z to 210800Z sep vicinity 13-27.6N 144-38.5E2009-09-20
- Underwater ordnance detonations 100300Z to 100700Z apr vicinity 13-27-42N 144-38-30E2007-04-05
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
Worldwide in the collected sources
0 ordnance operations listed in force · see all
Record snapshot 2026-10-03 19:14Z; 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.