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 1934/10 · Exercises2010-09-22 → 2010-10-01Gunnery exercises 0001Z to 0800Z daily 27 sep thru 01 oct in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 1933/10 · Exercises2010-09-22 → 2010-10-01Gunnery exercises 2300Z to 0800Z commencing daily 26 thru 30 sep in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1886/10 · Exercises2010-09-16 → 2010-09-24Gunnery exercises 0001Z to 0800Z daily 20 and 24 sep in area bound by 38-15N 129-51E, 38-14N 130-10E, 37-47N…
- HYDROPAC 1877/10 · Exercises2010-09-15 → 2010-09-24Gunnery exercises 2300Z to 0800Z commencing daily 19 and 23 sep in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1876/10 · Exercises2010-09-15 → 2010-09-16Gunnery exercises 200001Z to 200800Z and 240001Z to 240800Z sep in area bound by 38-08N 129-51E, 38-08N…
- HYDROPAC 1837/10 · Missiles2010-09-10 → 2010-09-17Hazardous operations 2300Z to 0600Z commencing daily 15 and 16 sep in area bound by 48-44.0N 140-47.5E,…
- HYDROPAC 1824/10 · Exercises2010-09-09 → 2010-09-17Gunnery exercises 2300Z to 0800Z commencing daily 12 thru 16 sep in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1823/10 · Exercises2010-09-09 → 2010-09-17Gunnery exercises 0001Z to 0800Z daily 13 thru 17 sep in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1818/10 · Incidents2010-09-08 → 2010-10-02Man overboard from S/V anavar vicinity 46-16N 141-16E at 071152Z sep
- HYDROPAC 1771/10 · Exercises2010-09-01 → 2010-09-10Gunnery exercises 2300Z to 0800Z commencing daily 05 thru 09 sep in area bounded by 38-25N 128-45E, 38-25N…
- HYDROPAC 1770/10 · Exercises2010-09-01 → 2010-09-10Gunnery exercises 0001Z to 0800Z daily 06 thru 10 sep in area bounded by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1732/10 · Exercises2010-08-26 → 2010-09-03Gunnery exercises 2300Z to 0800Z commencing daily 29 aug thru 02 sep in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1731/10 · Exercises2010-08-26 → 2010-09-03Gunnery exercises 0001Z to 0800Z daily 30 aug thru 03 sep in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1681/10 · Exercises2010-08-18 → 2010-08-27Gunnery exercises 2300Z to 0800Z commencing daily 22 thru 26 aug in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1680/10 · Exercises2010-08-18 → 2010-08-27Gunnery exercises 0001Z to 0800Z daily 23 thru 27 aug in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1624/10 · Exercises2010-08-11 → 2010-08-20Gunnery exercises 2300Z to 0800Z commencing daily 15 thru 19 aug in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1623/10 · Exercises2010-08-11 → 2010-08-20Gunnery exercises 0001Z to 0800Z daily 16 thru 20 aug in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1578/10 · Exercises2010-08-04 → 2010-08-13Gunnery exercises 2300Z to 0800Z commencing daily 08 thru 12 aug in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1577/10 · Exercises2010-08-04 → 2010-08-13Gunnery exercises 0001Z to 0800Z daily 09 thru 13 aug in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1539/10 · Exercises2010-07-28 → 2010-08-06Gunnery exercises 2300Z to 0800Z commencing daily 01 thru 05 aug in area bound 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.