Other

Bombing exercises in progress until 232359Z apr in area bound by 43-45-55N 145-34-11E, 43-46-06N 145-41-45E,…

Sea of Okhotsk · HYDROPAC 1110/21

What this record establishes

Archived notice · 2021-04-24 00:59Z

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 66/21 110537Z APR 21.. Issued 2021-04-11 06:08Z. 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.

Current notices and reporting history in the Sea of Okhotsk →

issued
2021-04-11 06:08Z
status
Archived notice
self-cancels
2021-04-24 00:59Z
authority
VLADIVOSTOK 66/21 110537Z APR 21.
issued by
VLADIVOSTOK
sea
Sea of Okhotsk
position
43.745, 145.635
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

SEA OF OKHOTSK.
DNC 24.
1. BOMBING EXERCISES IN PROGRESS UNTIL 232359Z APR
   IN AREA BOUND BY
   43-45-55N 145-34-11E, 43-46-06N 145-41-45E,
   43-42-54N 145-41-38E, 43-43-56N 145-33-45E.
2. CANCEL THIS MSG 240059Z APR 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.
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.
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.

All warning terms →

Collected reports in this area · other warnings

5 within 180 nm since 2008 · 0 in the last 12 months · 0 listed in force now

08
10
15
20
21

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

23 other warnings listed in force · see all

Record snapshot 2026-09-29 01:30Z; source collection times vary.

Other

Everything the classifier did not place elsewhere. All current other warnings →

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.