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 2485/10 · Exercises2010-11-17 → 2010-11-26Gunnery exercises 0001Z to 0800Z daily 22 thru 26 nov in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 2463/10 · Exercises2010-11-15 → 2010-11-21Gunnery exercises 0001Z to 0800Z daily 20 and 21 nov in area bound by 38-25N 128-45E, 38-25N 129-30E, 38-10N…
- HYDROPAC 2458/10 · Other2010-11-13 → 2010-12-03Hydrographic operations in progress until 02 dec by M/V marshal gelovany in area bound by 44-30N 137-17E,…
- HYDROPAC 2423/10 · Exercises2010-11-10 → 2010-11-19Gunnery exercises 2300Z to 0800Z commencing daily 14 thru 18 nov in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2422/10 · Exercises2010-11-10 → 2010-11-19Gunnery exercises 0001Z to 0800Z daily 15 and 19 nov in area bound by 38-15N 129-51E, 38-14N 130-10E, 37-47N…
- HYDROPAC 2344/10 · Exercises2010-11-03 → 2010-11-12Gunnery exercises 2300Z to 0800Z commencing daily 07 thru 11 nov in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2343/10 · Exercises2010-11-03 → 2010-11-12Gunnery exercises 0001Z to 0800Z daily 08 and 10 thru 12 nov in area bound by 38-15N 129-51E, 38-14N…
- HYDROPAC 2279/10 · Exercises2010-10-28 → 2010-11-05Gunnery exercises 2300Z to 0800Z commencing daily 31 oct thru 04 nov in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2278/10 · Exercises2010-10-28 → 2010-11-05Gunnery exercises 0001Z to 0800Z daily 01 thru 05 nov in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 2222/10 · Missiles2010-10-24 → 2010-11-01Hazardous operations 2200Z to 0200Z commencing daily 28 and 29 oct, 0400Z to 0700Z daily 29 and 30 oct,…
- HYDROPAC 2178/10 · Exercises2010-10-20 → 2010-10-29Gunnery exercises 2300Z to 0800Z commencing daily 24 thru 28 oct in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2177/10 · Exercises2010-10-20 → 2010-10-29Gunnery exercises 0001Z to 0800Z daily 25 thru 29 oct in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 2119/10 · Exercises2010-10-13 → 2010-10-22Gunnery exercises 2300Z to 0800Z commencing daily 17 thru 21 oct in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2118/10 · Exercises2010-10-13 → 2010-10-22Gunnery exercises 0001Z to 0800Z daily 18 thru 22 oct in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 2097/10 · Missiles2010-10-10 → 2010-10-16Hazardous operations 2200Z to 0200Z commencing daily 13 thru 15 oct and 0400Z to 0700Z daily 14 thru 16 oct…
- HYDROPAC 2070/10 · Exercises2010-10-06 → 2010-10-15Gunnery exercises 0001Z to 0800Z daily 11 thru 15 oct in area bound by 38-15N 129-51E, 38-14N 130-10E,…
- HYDROPAC 2069/10 · Exercises2010-10-06 → 2010-10-15Gunnery exercises 2300Z to 0800Z commencing daily 10 thru 14 oct in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2037/10 · Surveys2010-10-02 → 2010-11-04Hydrographic survey 07 oct thru 03 nov by M/V marshal gelovany in area bound by 44-30N 137-17E, 45-30N…
- HYDROPAC 2004/10 · Exercises2010-09-29 → 2010-10-08Gunnery exercises 2300Z to 0800Z commencing daily 03 thru 07 oct in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 2003/10 · Exercises2010-09-29 → 2010-10-08Gunnery exercises 0001Z to 0800Z daily 04 thru 08 oct in area bound by 38-15N 129-51E, 38-14N 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.