Hazardous operations 2200Z to 1000Z daily 18 thru 22 apr in areas bound by: a. 47-19.50N 143-36.20E,…
Sea of Okhotsk · HYDROPAC 1286/23
What this record establishes
Archived notice · 2023-04-23 11:00Z
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 45/23 181936Z APR 23.. Issued 2023-04-18 19:46Z. 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) | local | length |
|---|---|---|---|
| 2023-04-18 22:00Z | 2023-04-19 10:00Z | — | 12 h |
| 2023-04-19 22:00Z | 2023-04-20 10:00Z | — | 12 h |
| 2023-04-20 22:00Z | 2023-04-21 10:00Z | — | 12 h |
| 2023-04-21 22:00Z | 2023-04-22 10:00Z | — | 12 h |
| 2023-04-22 22:00Z | 2023-04-23 10:00Z | — | 12 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2023-04-18 19:46Z
- status
- Archived notice
- self-cancels
- 2023-04-23 11:00Z
- authority
- NAVAREA XIII 45/23 181936Z APR 23.
- NAVAREA
- NAVAREA XIII · named as the source of this relay
- sea
- Sea of Okhotsk
- position
- 47.093, 145.143
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SEA OF OKHOTSK.
KURIL ISLANDS.
RUSSIA.
DNC 24.
1. HAZARDOUS OPERATIONS 2200Z TO 1000Z DAILY
18 THRU 22 APR IN AREAS BOUND BY:
A. 47-19.50N 143-36.20E, 47-31.70N 144-05.00E,
47-37.40N 145-25.00E, 47-19.70N 145-31.20E,
47-00.80N 145-25.00E, 47-08.00N 144-04.30E.
B. 46-30.00N 145-45.00E, 46-30.00N 147-05.00E,
46-18.00N 147-05.00E, 46-18.00N 145-45.00E.
2. CANCEL THIS MSG 231100Z APR 23.
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.
- 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.
Collected reports in this area · military exercises
50 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.
- Gunnery exercises 142000Z to 151200Z aug in area bound by 45-33.00N 143-20.00E, 46-04.00N 143-26.00E,…2026-08-11
- Gunnery exercises 2000Z to 1200Z daily 09 thru 14 aug in areas bound by: a. 46-41.00N 146-02.00E, 45-13.00N…2026-08-11
- Hazardous operations 2200Z to 1300Z daily 19 jun thru 14 jul in area bound by 47-01.00N 141-20.80E,…2025-06-16
- Gunnery exercises 2200Z to 1300Z daily 25 may to 19 jun in area bound by 47-01.00N 141-20.80E, 46-57.50N…2025-06-04
- Gunnery exercises 2200Z to 1300Z daily 23 jan thu 20 feb in area bound by 47-01.00N 141-20.80E, 46-57.50N…2025-01-18
- Gunnery exercises 2200Z to 1200Z daily 30 sep thru 24 oct in area bound by 47-01.00N 141-20.80E, 46-57.50N…2024-09-25
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
Worldwide in the collected sources
9 military exercises listed in force · see all
Record snapshot 2026-10-02 17:43Z; 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.