Hazardous operations: a. 26 sep in area between 42-15.0N 42-23.0N and 131-23.0E 131-31.0E
Japan Sea · HYDROPAC 3290/17
What this record establishes
Archived notice · 2017-09-29 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 XI 623/17 251354Z SEP 17.. Issued 2017-09-25 14:02Z. 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.
- issued
- 2017-09-25 14:02Z
- status
- Archived notice
- authority
- NAVAREA XI 623/17 251354Z SEP 17.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- Japan Sea
- position
- 42.344, 131.807
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SEA OF JAPAN.
RUSSIA.
DNC 23, DNC 24.
1. HAZARDOUS OPERATIONS:
A. 26 SEP IN AREA BETWEEN
42-15.0N 42-23.0N AND 131-23.0E 131-31.0E.
B. 27 SEP IN AREA BOUND BY
42-17.0N 131-43.0E, 42-24.0N 131-43.0E,
42-24.0N 131-54.0E, 42-17.5N 131-54.0E.
C. 28 SEP IN AREA BETWEEN
42-14.0N 42-24.0N AND 132-39.0E 132-50.0E.
2. CANCEL THIS MSG 29 SEP 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.
- 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.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · military exercises
239 within 180 nm since 1999 · 3 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.
- 2200Z to 1000Z commencing daily 31 jul, 02 to 14, 16 to 21, 23 to 28 and 30 aug2026-07-27
- Gunnery exercises 2200Z to 1000Z daily, 31 jul, 02 thru 14, 16 thru 21, 23 thru 28 and 30 aug, in area bound…2026-07-27
- Gunnery exercises 2200Z to 0800Z daily 11 thru 16, 18 thru 23 and 25 thru 30 jan in area bound by 42-40.00N…2026-01-07
- Gunnery exercises 2200Z to 1000Z daily 11 thru 13, 15 thru 20, 22 thru 29 jun in area bound by 42-40.00N…2025-06-12
- Gunnery exercises 2200Z to 0800Z daily 31 jan thru 27 feb except saturdays in area bound by 42-40.00N…2025-01-29
- Gunnery exercises 2200Z to 0800Z daily 01, 02, 05 thru 07, 12 thru 17, 19 thru 24 and 26 thru 30 may in area…2024-04-27
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
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 05:50Z; 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.