Exercises

Gunnery exercises 2200Z to 1700Z commencing daily 30 jun thru 02 jul in area bound by 44-17.0N 137-03.0E,…

Japan Sea · HYDROPAC 1791/12

What this record establishes

Archived notice · 2012-07-03 18:00Z

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 40/12 250912Z JUN 12.. Issued 2012-06-25 10:12Z. 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
Japan Sea. 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 Japan Sea →

Activity windows · 3 in this warning

opens (UTC)closes (UTC)locallength
2012-06-30 22:00Z2012-07-01 17:00Z—19 h
2012-07-01 22:00Z2012-07-02 17:00Z—19 h
2012-07-02 22:00Z2012-07-03 17:00Z—19 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 10:12Z
status
Archived notice
self-cancels
2012-07-03 18:00Z
authority
NAVAREA XIII 40/12 250912Z JUN 12.
NAVAREA
NAVAREA XIII · named as the source of this relay
sea
Japan Sea
position
44.757, 137.095
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

SEA OF JAPAN.
GUNNERY.
1. GUNNERY EXERCISES 2200Z TO 1700Z COMMENCING
   DAILY 30 JUN THRU 02 JUL IN AREA BOUND BY
   44-17.0N 137-03.0E, 44-41.0N 136-25.5E,
   45-14.0N 137-08.0E, 44-49.5N 137-46.0E.
2. CANCEL HYDROPAC 1752/12.
3. CANCEL THIS MSG 031800Z 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

24 within 180 nm since 2002 · 0 in the last 12 months · 0 listed in force now

02
05
10
15
20
22

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

10 military exercises listed in force · see all

Record snapshot 2026-10-03 09:29Z; 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.