Exercises
Hazardous operations
Sea of Japan · HYDROPAC 2555/13
- issued
- 2013-08-26 17:09Z
- status
- cancelled 2013-09-03 22:30Z (archive)
- self-cancels
- 2013-09-03 22:30Z
- authority
- NAVAREA XIII 57/13 260908Z AUG 13.
- sea
- Japan Sea
- position
- 42.500, 135.633 · r 97.0 nm
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
SEA OF JAPAN. HAZARDOUS OPERATIONS. 1. HAZARDOUS OPERATIONS 2000Z TO 2130Z DAILY 31 AUG THRU 03 SEP WITHIN 97 MILES OF 42-30N 135-38E. 2. CANCEL THIS MSG 032230Z SEP 13.
Activity windows · 4 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2013-08-31 20:00Z | 2013-08-31 21:30Z | — | 1 h 30 |
| 2013-09-01 20:00Z | 2013-09-01 21:30Z | — | 1 h 30 |
| 2013-09-02 20:00Z | 2013-09-02 21:30Z | — | 1 h 30 |
| 2013-09-03 20:00Z | 2013-09-03 21:30Z | — | 1 h 30 |
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
232 within 180 nm since 1999 · 2 in the last 12 months · 2 in force now
99
00
05
10
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
Nothing else in force 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.