Ordnance

Underwater ordnance detonations: a. 282300Z to 290100Z may along trackline between 23-54-06N 151-59-28W and…

North Pacific Ocean · NAVAREA XII 131/03

What this record establishes

Archived notice · 2003-05-29 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) · COMCONBATGRU 152214Z MAY 03. Issued 2003-05-23 09:50Z. 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.

Current notices and reporting history in the North Pacific Ocean →

Activity windows · 2 in this warning

opens (UTC)	closes (UTC)	local	length
2003-05-28 23:00Z	2003-05-29 01:00Z	—	2 h
2003-05-29 19:00Z	2003-05-29 21:00Z	—	2 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued: 2003-05-23 09:50Z
status: Archived notice
self-cancels: 2003-05-29 22:00Z
authority: COMCONBATGRU 152214Z MAY 03
NAVAREA: NAVAREA XII
issued by: COMCONBATGRU
sea: North Pacific Ocean
position: 25.065, -148.994
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER ORDNANCE DETONATIONS:
   A. 282300Z TO 290100Z MAY ALONG TRACKLINE BETWEEN
      23-54-06N 151-59-28W AND 24-07-28N 151-26-25W.
   B. 291900Z TO 292100Z MAY ALONG TRACKLINE BETWEEN
      26-04-04N 146-24-56W AND 26-15-38N 145-52-51W.
2. CANCEL THIS MSG 292200Z 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.
CANCEL THIS MSG: The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · ordnance operations

5 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.

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 2026-09-26 12:48Z; 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.