Exercises

Gunnery exercises 2300Z to 0200Z commencing daily 28 thru 30 jun in area bound by 47-04.0N 151-30.0E,…

Sea of Okhotsk · HYDROPAC 1786/12

What this record establishes

Archived notice · 2012-07-01 03:00Z

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) · NAVAREA XIII 39/12 250911Z JUN 12.. Issued 2012-06-25 09:43Z. 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.

Current notices and reporting history in the Sea of Okhotsk →

Activity windows · 3 in this warning

opens (UTC)closes (UTC)locallength
2012-06-28 23:00Z2012-06-29 02:00Z—3 h
2012-06-29 23:00Z2012-06-30 02:00Z—3 h
2012-06-30 23:00Z2012-07-01 02:00Z—3 h

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

issued
2012-06-25 09:43Z
status
Archived notice
self-cancels
2012-07-01 03:00Z
authority
NAVAREA XIII 39/12 250911Z JUN 12.
NAVAREA
NAVAREA XIII · named as the source of this relay
sea
Sea of Okhotsk
position
47.636, 151.496
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

SEA OF OKHOTSK.
GUNNERY.
1. GUNNERY EXERCISES 2300Z TO 0200Z COMMENCING
   DAILY 28 THRU 30 JUN IN AREA BOUND BY
   47-04.0N 151-30.0E, 47-30.0N 150-40.5E,
   48-12.0N 151-29.5E, 47-47.0N 152-19.0E.
2. CANCEL HYDROPAC 1713/12.
3. CANCEL THIS MSG 010300Z JUL.

Reading this warning

Gunnery and live firing
Naval or coastal guns firing into a sea area for practice, at stated times.
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.
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.
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

20 within 180 nm since 2011 · 2 in the last 12 months · 0 listed in force now

11
15
20
25
26

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

9 military exercises listed in force · see all

Record snapshot 2026-10-03 19:49Z; 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.