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 1145/10 · Exercises2010-06-02 → 2010-06-11Gunnery exercises 2300Z to 0800Z commencing daily 06 thru 10 jun in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1117/10 · Exercises2010-05-29 → 2010-06-05Gunnery exercises 2300Z to 0600Z commencing daily 03 and 04 jun in area bound by 48-56N 140-38E, 49-02N…
- HYDROPAC 1115/10 · Exercises2010-05-29 → 2010-06-03Gunnery exercises 022300Z to 030800Z jun in area bound by 38-25N 128-45E, 38-25N 129-30E, 38-10N 129-30E,…
- HYDROPAC 1104/10 · Exercises2010-05-28 → 2010-06-04Gunnery exercises 0001Z to 0800Z daily 31 may, 01, 03 and 04 jun in area bound by 38-08N 129-51E, 38-08N…
- HYDROPAC 1064/10 · Exercises2010-05-22 → 2010-05-28Gunnery exercises 2300Z to 0800Z commencing daily 26 and 27 may in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1045/10 · Exercises2010-05-20 → 2010-05-28Gunnery exercises 0001Z to 0800Z daily 24 thru 28 may in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1034/10 · Exercises2010-05-19 → 2010-05-27Gunnery exercises 2300Z to 0600Z commencing daily 24 thru 26 may in areas bound by: a. 49-06.0N 140-30.5E,…
- HYDROPAC 1002/10 · Exercises2010-05-14 → 2010-05-20Gunnery exercises 2300Z to 0800Z commencing daily 18 and 19 may in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 986/10 · Exercises2010-05-12 → 2010-05-20Gunnery exercises 0001Z to 0800Z daily 17 thru 20 may in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 936/10 · Exercises2010-05-06 → 2010-05-12Gunnery exercises 2300Z to 0800Z commencing daily 10 and 11 may in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 928/10 · Exercises2010-05-05 → 2010-05-14Gunnery exercises 0001Z to 0800Z daily 10 thru 14 may in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 888/10 · Exercises2010-04-28 → 2010-05-03Gunnery exercises 022300Z to 030800Z may in area bound by 38-25N 128-45E, 38-25N 129-30E, 38-10N 129-30E,…
- HYDROPAC 887/10 · Exercises2010-04-28 → 2010-05-07Gunnery exercises 0001Z to 0800Z daily 03, 04, 06 and 07 may in area bound by 38-08N 129-51E, 38-08N…
- HYDROPAC 853/10 · Exercises2010-04-24 → 2010-04-29Gunnery exercises 2300Z to 0800Z daily 28 and 29 apr in area bound by 38-25N 128-45E, 38-25N 129-30E, 38-10N…
- HYDROPAC 826/10 · Exercises2010-04-21 → 2010-04-30Gunnery exercises 0001Z to 0800Z daily 26 thru 30 apr in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 797/10 · Exercises2010-04-18 → 2010-04-23Gunnery exercises 222300Z to 230800Z apr in area bound by 38-25N 128-45E, 38-25N 129-30E, 38-10N 129-30E,…
- HYDROPAC 792/10 · Missiles2010-04-17 → 2010-04-23Hazardous operations 2300Z to 0200Z commencing daily 20 thru 22 apr and 0400Z to 0700Z daily 21 thru 23 apr…
- HYDROPAC 768/10 · Exercises2010-04-14 → 2010-04-23Gunnery exercises 0001Z to 0800Z daily 19 thru 23 apr in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 736/10 · Exercises2010-04-10 → 2010-04-15Gunnery exercises 142300Z to 150800Z apr in area bound by 38-25N 128-45E, 38-25N 129-30E, 38-10N 129-30E,…
- HYDROPAC 704/10 · Exercises2010-04-07 → 2010-04-16Gunnery exercises 0001Z to 0800Z daily 12 thru 16 apr in area bound by 38-08N 129-51E, 38-08N 130-10E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.