Gunnery exercises 2300Z to 1000Z commencing daily 16 thru 18 and 22 thru 25 mar in area bound by 44-56-48N…
Sea of Okhotsk · HYDROPAC 517/10
What this record establishes
Archived notice · 2010-03-26 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) · VLADIVOSTOK 29/10 16 MAR 10. Issued 2010-03-16 11:52Z. 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.
Related notices and cancellation links
Current notices and reporting history in the Sea of Okhotsk →
Activity windows · 3 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2010-03-16 23:00Z | 2010-03-17 10:00Z | — | 11 h |
| 2010-03-17 23:00Z | 2010-03-18 10:00Z | — | 11 h |
| 2010-03-18 23:00Z | 2010-03-19 10:00Z | — | 11 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2010-03-16 11:52Z
- status
- Archived notice
- self-cancels
- 2010-03-26 11:00Z
- authority
- VLADIVOSTOK 29/10 16 MAR 10
- issued by
- VLADIVOSTOK
- sea
- Sea of Okhotsk
- position
- 44.960, 147.745
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN NORTH PACIFIC. KURIL ISLANDS. GUNNERY. 1. GUNNERY EXERCISES 2300Z TO 1000Z COMMENCING DAILY 16 THRU 18 AND 22 THRU 25 MAR IN AREA BOUND BY 44-56-48N 147-45-00E, 44-58-24N 147-43-36E, 44-58-48N 147-43-24E, 44-57-00N 147-46-00E. 2. CANCEL HYDROPAC 510/10(21), VESSEL LOCATED SAFE. 3. CANCEL THIS MSG 261100Z MAR.
Reading this warning
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROPAC
- The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
- 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
36 within 180 nm since 2010 · 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
- Gunnery exercises 2300Z to 1000Z daily 04 oct thru 04 nov in area bound by 44-05.00N 146-56.00E, 44-05.00N…2023-09-29
- Hazardous operations 2200Z to 1000Z daily 18 thru 22 apr in areas bound by: a. 47-19.50N 143-36.20E,…2023-04-18
- Hazardous operations 2200Z to 1000Z daily 17 thru 21 apr in areas bound by: a. 46-05.00N 148-45.00E,…2023-04-16
- Hazardous operations 2200Z to 1000Z daily 17 thru 21 apr in areas bound by: a. 45-46.00N 147-55.00E,…2023-04-15
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
17 military exercises listed in force · see all
Record snapshot 2026-09-25 11:48Z; 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.