Exercises

Gunnery exercises 0001Z to 1100Z daily 21 thru 25 jun in area bound by 44-54-30N 147-38-10E, 44-56-50N…

Sea of Okhotsk · HYDROPAC 1777/21

What this record establishes

Archived notice · 2021-06-25 12:00Z

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) · VLADIVOSTOK 133/21 160912Z JUN 21.. Issued 2021-06-16 10:15Z. 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 · 5 in this warning

opens (UTC)closes (UTC)locallength
2021-06-21 00:01Z2021-06-21 11:00Z—10 h 59
2021-06-22 00:01Z2021-06-22 11:00Z—10 h 59
2021-06-23 00:01Z2021-06-23 11:00Z—10 h 59
2021-06-24 00:01Z2021-06-24 11:00Z—10 h 59
2021-06-25 00:01Z2021-06-25 11:00Z—10 h 59

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

issued
2021-06-16 10:15Z
status
Archived notice
self-cancels
2021-06-25 12:00Z
authority
VLADIVOSTOK 133/21 160912Z JUN 21.
issued by
VLADIVOSTOK
sea
Sea of Okhotsk
position
44.919, 147.733
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH PACIFIC.
DNC 24.
1. GUNNERY EXERCISES 0001Z TO 1100Z DAILY
   21 THRU 25 JUN IN AREA BOUND BY
   44-54-30N 147-38-10E, 44-56-50N 147-48-30E,
   44-56-01N 147-50-09E, 44-53-25N 147-39-28E.
2. CANCEL THIS MSG 251200Z JUN 21.

Reading this warning

DNC (Digital Nautical Chart)
A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
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.
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

36 within 180 nm since 2010 · 2 in the last 12 months · 0 listed in force now

10
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

Worldwide in the collected sources

9 military exercises listed in force · see all

Record snapshot 2026-10-02 18:21Z; 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.