Exercises

Hazardous operations 08 thru 30 sep: a. in area bound by 46-34.5N 143-31.5E, 46-50.0N 143-31.5E, 46-50.0N…

Sea of Okhotsk · HYDROPAC 3028/17

What this record establishes

Archived notice · 2017-10-01 00:01Z

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 85/17 050911Z SEP 17.. Issued 2017-09-05 09:18Z. 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: 2017-09-05 09:18Z
status: Archived notice
authority: NAVAREA XIII 85/17 050911Z SEP 17.
NAVAREA: NAVAREA XIII · named as the source of this relay
sea: Sea of Okhotsk
position: 46.935, 144.014
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

SEA OF OKHOTSK.
SAKHALIN.
DNC 24.
1. HAZARDOUS OPERATIONS 08 THRU 30 SEP:
   A. IN AREA BOUND BY
      46-34.5N 143-31.5E, 46-50.0N 143-31.5E,
      46-50.0N 143-28.0E, 47-04.5N 143-28.0E,
      47-04.5N 144-32.5E, 46-45.0N 144-32.5E,
      46-34.5N 144-18.0E.
   B. IN AREA BOUND BY
      47-05.0N 143-31.5E, 47-18.5N 143-31.5E,
      47-18.5N 144-32.5E, 47-05.0N 144-32.5E.
   C. IN AREA WITHIN SIX MILES OF 46-34N 144-06E.
2. CANCEL THIS MSG 01 OCT 17.

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.
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.

All warning terms →

Collected reports in this area · military exercises

68 within 180 nm since 2004 · 2 in the last 12 months · 0 listed in force now

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

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

Survey operations 15 jul thru 15 oct by M/V nikolay trubyatchinskiy along trackline joining 46-48.60N…Surveys · 117.5 nm

Worldwide in the collected sources

9 military exercises listed in force · see all

Record snapshot 2026-10-03 15:43Z; 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.