Exercises

Hazardous operations 2300Z to 0700Z commencing daily 30 sep thru 03 oct: a. in area bound by 47-36N 151-21E,…

Sea of Okhotsk · HYDROPAC 1578/05

What this record establishes

Archived notice · 2005-10-01 22:47Z

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) · NAVAERA XIII 49/05 25 SEP 05.. Issued 2005-09-25 19:08Z. 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
Sea of Okhotsk. 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

Current notices and reporting history in the Sea of Okhotsk →

Activity windows · 4 in this warning

opens (UTC)closes (UTC)locallength
2005-09-30 23:00Z2005-10-01 07:00Z—8 h
2005-10-01 23:00Z2005-10-02 07:00Z—8 h
2005-10-02 23:00Z2005-10-03 07:00Z—8 h
2005-10-03 23:00Z2005-10-04 07:00Z—8 h

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

issued
2005-09-25 19:08Z
status
Archived notice
self-cancels
2005-10-04 08:00Z
authority
NAVAERA XIII 49/05 25 SEP 05.
issued by
NAVAERA XIII
sea
Sea of Okhotsk
position
57.177, 140.550
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 2300Z TO 0700Z COMMENCING DAILY
   30 SEP THRU 03 OCT:
   A. IN AREA BOUND BY
      47-36N 151-21E, 47-54N 151-06E,
      48-06N 151-40E, 47-52N 151-58E.
   B. WITHIN 27 MILES OF 52-49N 146-17E.
   C. WITHIN 27.5 MILES OF 57-09N 140-33E.
2. CANCEL THIS MSG 040800Z OCT.

Reading this warning

Hazardous operations
NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
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.
Within a radius of
A circular area — every position within a stated distance of a point.
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.

All warning terms →

Collected reports in this area · military exercises

13 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
00
05
10
11

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

J
F
M
A
M
J
J
A
S
O
N
D

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

28 military exercises listed in force · see all

Record snapshot 2026-10-02 13:51Z; source collection times vary.

Exercises

Gunnery, firing and naval exercise areas. All current military exercises →

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.