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
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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 278/21 · Wrecks2021-01-21 → 2022-03-25Submerged obstruction in vicinity 51-29.25N 140-54.76E
- HYDROPAC 212/21 · Exercises2021-01-17 → 2021-01-20Gunnery exercises 191400Z to 201400Z jan in area bound by 42-46-25N 131-15-47E, 42-50-00N 131-22-20E,…
- HYDROPAC 166/21 · Exercises2021-01-13 → 2021-01-30Hazardous operations 2300Z to 1500Z daily 12 thru 15, 17 thru 22 and 24 thru 29 jan in area bound by…
- USGS-US6000D7ML · Quakes2021-01-12 → 2021-01-1584 km nw of yoichi, japan
- HYDROPAC 97/21 · Restricted2021-01-09 → 2021-01-16Navigation prohibited until 152300Z jan in area bound by 43-13.42N 132-18.20E, 43-12.43N 132-19.05E,…
- HYDROPAC 3843/20 · Restricted2020-12-26 → 2021-01-05Navigation prohibited until 042300Z jan 21 in area bound by 43-13.42N 132-18.20E, 43-12.43N 132-19.05E,…
- HYDROPAC 3837/20 · Wrecks2020-12-25 → 2021-01-06Submerged obstruction in vicinity 51-26.88N 140-54.76E
- HYDROPAC 3799/20 · Missiles2020-12-22 → 2020-12-30Missile operations 2100Z to 0800Z daily 26 thru 29 dec in area bound by 42-00N 131-15E, 42-43N 131-15E,…
- HYDROPAC 3763/20 · Exercises2020-12-20 → 2020-12-26Gunnery exercises 252100Z to 260900Z dec in area bound by 42-56-42N 131-31-36E, 43-04-00N 131-39-30E,…
- HYDROPAC 3762/20 · Exercises2020-12-20 → 2020-12-25Gunnery exercises 222100Z to 252100Z dec in area bound by 42-30N 131-00E, 42-30N 131-30E, 42-20N 131-30E,…
- HYDROPAC 3761/20 · Exercises2020-12-20 → 2020-12-23Gunnery exercises 222300Z to 230800Z dec in area bound by 42-46.3N 132-23.0E, 42-45.0N 132-28.5E, 42-43.0N…
- HYDROPAC 3760/20 · Exercises2020-12-20 → 2020-12-23Gunnery exercises 222300Z to 230800Z dec in area bound by 42-38.5N 132-35.0E, 42-37.5N 132-49.0E, 42-31.0N…
- HYDROPAC 3759/20 · Restricted2020-12-20 → 2020-12-26Navigation prohibited until 252300Z dec in area bound by 43-13.42N 132-18.20E, 43-12.43N 132-19.05E,…
- HYDROPAC 3717/20 · Missiles2020-12-16 → 2020-12-26Missile operations 2100Z to 0800Z daily 20 thru 25 dec in area bound by 42-00N 131-15E, 42-43N 131-15E,…
- HYDROPAC 3715/20 · Missiles2020-12-16 → 2020-12-16Missile operations 2100Z to 0800Z daily 20 thru 25 dec in area bound by 42-00N 131-15E, 42-43N 131-15E,…
- HYDROPAC 3645/20 · Missiles2020-12-09 → 2020-12-19Missile operations 2100Z to 0900Z daily 13 thru 18 dec in area bound by 42-28.2N 131-56.1E, 42-28.2N…
- HYDROPAC 3640/20 · Missiles2020-12-09 → 2020-12-19Missile operations 2100Z to 0900Z commencing daily 13 thru 18 dec in area bound by 44-41.5N 136-45.0E,…
- HYDROPAC 3628/20 · Restricted2020-12-08 → 2020-12-16Navigation prohibited until 152300Z dec in area bound by 43-13-42N 132-18-20E, 43-12-43N 132-19-05E,…
- HYDROPAC 3627/20 · Exercises2020-12-08 → 2020-12-13Gunnery exercises 2200Z to 1000Z daily 10 thru 12 dec in area bound by 42-40.0N 131-41.0E 42-40.0N 131-57.0E…
- USGS-US7000CLBU · Quakes2020-11-30 → 2020-12-0388 km sse of sovetskaya gavan’, russia
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.