Underwater ordnance detonations 050200Z to 050700Z oct: a. vicinity of trackline joining 35-50.0N 124-33.3E,…
Yellow Sea · HYDROPAC 1847/02
What this record establishes
Archived notice · 2002-10-05 08:00Z
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 72 240201Z SEP 02. Issued 2002-10-04 07:20Z. 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
- Yellow Sea. 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
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2002-10-05 02:00Z | 2002-10-05 07:00Z | — | 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
- 2002-10-04 07:20Z
- status
- Archived notice
- self-cancels
- 2002-10-05 08:00Z
- authority
- CTF 72 240201Z SEP 02
- issued by
- CTF
- sea
- Yellow Sea
- position
- 35.790, 124.557
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER ORDNANCE DETONATIONS 050200Z TO 050700Z OCT:
A. VICINITY OF TRACKLINE JOINING 35-50.0N 124-33.3E,
35-47.4N 124-33.5E, 35-44.8N 124-33.4E.
B. IN AREA BETWEEN 35-40.0N 36-10.0N AND 124-20.0E 124-40.0E.
2. CANCEL HYDROPAC 1833/02.
3. CANCEL THIS MSG 050800Z 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.
- 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 2000 · 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 192200Z to 230830Z mar in area bound by 34-34.33N 125-32.18E, 34-13.92N…2012-03-20
- Underwater ordnance detonations 280001Z to 280200Z mar in areas within 2000 yards of: a. 36-56.9N 125-42.0E2006-03-23
- Underwater ordnance detonations 0001Z to 1300Z daily: a. 07 may in area bound by 26-07N 122-35E, 25-45N…2003-05-06
- Underwater ordnance detonations 111100Z to 111500Z oct vicinity of trackline joining 35-41.7N 124-53.5E,…2002-10-08
- Underwater ordnance detonations 060700Z to 070300Z oct: a. in areas between: 1. 35-15.0N 35-20.0N and…2002-10-04
- Underwater ordnance detonations 071000Z to 071400Z oct vicinity of trackline joining 35-44.7N 124-33.0E,…2002-10-04
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 07:47Z; 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.