Gunnery exercises 2300Z to 1400Z commencing daily 15 thru 18, 21 thru 25 and 28 thru 30 mar within 5.5 miles…
Japan Sea · HYDROPAC 457/04
What this record establishes
Archived notice · 2004-03-31 15:00Z
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 37/04 10 MAR; AUSCOAST 101016Z MAR 04. Issued 2004-03-10 12:20Z. 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 parsed report position is 42.828, 131.363 with a 5.5 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
Activity windows · 4 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2004-03-15 23:00Z | 2004-03-16 14:00Z | — | 15 h |
| 2004-03-16 23:00Z | 2004-03-17 14:00Z | — | 15 h |
| 2004-03-17 23:00Z | 2004-03-18 14:00Z | — | 15 h |
| 2004-03-18 23:00Z | 2004-03-19 14:00Z | — | 15 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2004-03-10 12:20Z
- status
- Archived notice
- self-cancels
- 2004-03-31 15:00Z
- authority
- VLADIVOSTOK 37/04 10 MAR; AUSCOAST 101016Z MAR 04
- issued by
- VLADIVOSTOK
- sea
- Japan Sea
- position
- 42.828, 131.363 · r 5.5 nm
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. GUNNERY EXERCISES 2300Z TO 1400Z COMMENCING DAILY 15 THRU 18, 21 THRU 25 AND 28 THRU 30 MAR WITHIN 5.5 MILES OF 42-49.7N 131-21.8E. 2. CANCEL HYDROPAC 247/04(75), OPERATIONS COMPLETED. 3. CANCEL THIS MSG 311500Z MAR.
Reading this warning
- Gunnery and live firing
- Naval or coastal guns firing into a sea area for practice, at stated times.
- Within a radius of
- A circular area — every position within a stated distance of a point.
- 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
237 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 10:02Z; 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.