Japan Sea
IHO sea area 52 · 126° to 142° E, 33° to 52° N
- in force
- 0
- last 12 months
- 16
- archive messages
- 1,301
- categories
- 15
What the archive shows
1,301 messages are recorded since 1993-06-02 for the Japan Sea. The selection uses the IHO sea area; a message may describe an exercise, equipment outage or continuing operation as well as a hazard report.
Exercises accounts for 635 of 1,301 recorded messages (49%), the largest category group in this selection.
The NGA historical archive froze in 2024-05; live collection began 2026-08-17. Counts around that gap are incomplete, and changes in reporting volume do not establish changes in incident frequency.
In force now · 0
Nothing in force in this sea right now.
By year
93
97
98
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
By month (all years)
J
F
M
A
M
J
J
A
S
O
N
D
By category · available archive
| Exercises | 635 | 49% |
| Missiles | 190 | 15% |
| Other | 105 | 8% |
| Incidents | 103 | 8% |
| Quakes | 87 | 7% |
| Derelicts | 51 | 4% |
| Surveys | 34 | 3% |
| Ordnance | 29 | 2% |
| Cable ops | 24 | 2% |
| Nav aids | 17 | 1% |
| Restricted | 15 | 1% |
| Wrecks | 5 | 0% |
| Debris | 3 | 0% |
| Containers | 2 | 0% |
| Volcanic | 1 | 0% |
Archive · 1,301 cancelled
- HYDROPAC 125/11 · Exercises2011-01-12 → 2011-01-21Gunnery exercises 0001Z to 1800Z daily 17 thru 21 jan in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 54/11 · Exercises2011-01-05 → 2011-01-14Gunnery exercises 0001Z to 1800Z daily 10 thru 14 jan in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 53/11 · Exercises2011-01-05 → 2011-01-14Gunnery exercises 2300Z to 0800Z commencing daily 09 thru 13 jan in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2972/10 · Exercises2010-12-29 → 2011-01-07Gunnery exercises 2300Z to 0800Z commencing daily 02 thru 06 jan in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2971/10 · Exercises2010-12-29 → 2011-01-07Gunnery exercises 0001Z to 0800Z daily 03 thru 07 jan in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 2941/10 · Missiles2010-12-27 → 2010-12-29Hazardous operations 2300Z to 0100Z commencing daily 27 and 28 dec and 0400Z to 0700Z daily 28 and 29 dec in…
- HYDROPAC 2882/10 · Exercises2010-12-23 → 2010-12-31Gunnery exercises 2300Z to 0800Z commencing daily 26 thru 30 dec in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2881/10 · Exercises2010-12-23 → 2010-12-31Gunnery exercises 0001Z to 0800Z daily 27 thru 31 dec in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 2843/10 · Missiles2010-12-20 → 2010-12-27Hazardous operations 2300Z to 0200Z commencing daily 24 thru 26 dec and 0400Z to 0700Z daily 25 thru 27 dec…
- HYDROPAC 2808/10 · Missiles2010-12-16 → 2010-12-24Hazardous operations 2300Z to 0200Z commencing daily 21 thru 23 dec and 0300Z to 0700Z daily 22 thru 24 dec…
- HYDROPAC 2793/10 · Exercises2010-12-15 → 2010-12-24Gunnery exercises 2300Z to 0800Z commencing daily 19 thru 23 dec in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2792/10 · Exercises2010-12-15 → 2010-12-24Gunnery exercises 0001Z to 0800Z daily 20 thru 24 dec in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 2766/10 · Missiles2010-12-13 → 2010-12-20Hazardous operations 2300Z to 0200Z commencing daily 17 thru 19 dec and 0300Z to 0600Z daily 18 thru 20 dec…
- HYDROPAC 2706/10 · Exercises2010-12-08 → 2010-12-17Gunnery exercises 2300Z to 0800Z commencing daily 12 thru 16 dec in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2705/10 · Exercises2010-12-08 → 2010-12-17Gunnery exercises 0001Z to 0800Z daily 13 thru 17 dec in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 2647/10 · Exercises2010-12-01 → 2010-12-12Gunnery exercises 2300Z to 0800Z commencing daily 05 thru 11 dec in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2646/10 · Exercises2010-12-01 → 2010-12-10Gunnery exercises 0001Z to 0800Z daily 06 thru 10 dec in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 2558/10 · Exercises2010-11-24 → 2010-12-05Gunnery exercises 2300Z to 0800Z commencing daily 28 nov thru 04 dec in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2557/10 · Exercises2010-11-24 → 2010-12-03Gunnery exercises 0001Z to 0800Z daily 29 nov thru 03 dec in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 2486/10 · Exercises2010-11-17 → 2010-11-28Gunnery exercises 2300Z to 0800Z commencing daily 21 thru 27 nov in area bounded by 38-25N 128-45E, 38-25N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.