Exercises
Hazardous operations 2300Z to 0200Z commencing daily 22 thru 24 dec and 0400Z to 0700Z daily 23 thru 25 dec…
HYDROPAC 2377/09
- issued
- 2009-12-18 08:18Z
- status
- cancelled 2009-12-25 08:00Z (archive)
- self-cancels
- 2009-12-25 08:00Z
- authority
- NAVAREA XI 846/09 180733Z DEC 09.
- sea
- Japan Sea
- position
- 42.413, 131.932
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS OPERATIONS 2300Z TO 0200Z COMMENCING DAILY 22 THRU 24 DEC AND 0400Z TO 0700Z DAILY 23 THRU 25 DEC IN AREA BOUND BY 42-05N 131-42E, 42-17N 131-03E, 42-30N 131-03E, 42-46N 131-50E, 42-45N 132-37E, 42-05N 132-37E. 2. CANCEL THIS MSG 250800Z DEC.
Activity windows · 6 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2009-12-22 23:00Z | 2009-12-23 02:00Z | — | 3 h |
| 2009-12-23 04:00Z | 2009-12-23 07:00Z | — | 3 h |
| 2009-12-23 23:00Z | 2009-12-24 02:00Z | — | 3 h |
| 2009-12-24 04:00Z | 2009-12-24 07:00Z | — | 3 h |
| 2009-12-24 23:00Z | 2009-12-25 02:00Z | — | 3 h |
| 2009-12-25 04:00Z | 2009-12-25 07:00Z | — | 3 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
This area · military exercises
235 within 180 nm since 1999 · 2 in the last 12 months · 2 in force now
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00
05
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15
20
25
26
- 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 01, 02, 05 thru 07, 12 thru 17, 19 thru 24 and 26 thru 30 may in area…2024-04-27
- Gunnery exercises 2200Z to 0800Z daily 31 mar thru 05 apr, 07 thru 12, 14 thru 19, 21 thru 26, 28 and 29 apr…2024-03-27
- Gunnery exercises 2200Z to 0800Z daily 02, 04, 07, 09, 11, 14, 16, 20, 21, 23, 25 and 28 feb in area bound…2024-01-31
- Gunnery exercises 1400Z to 1400Z daily 02, 03, 05, 07, 10, 11, 19 thru 21, 24, 25, 27 and 28 feb in areas…2024-01-31
Season · when military exercises happen here
J
F
M
A
M
J
J
A
S
O
N
D
month of issue, all years in the archive
Nearby now · within 120 nm
Worldwide now
35 military exercises in force · see all
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.