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 1538/10 · Exercises2010-07-28 → 2010-08-06Gunnery exercises 0001Z to 0800Z daily 02 thru 06 aug in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1492/10 · Exercises2010-07-21 → 2010-07-30Gunnery exercises 2300Z to 0800Z commencing daily 25 thru 29 jul in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1491/10 · Exercises2010-07-21 → 2010-07-30Gunnery exercises 0001Z to 0800Z daily 26 thru 30 jul in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1452/10 · Exercises2010-07-14 → 2010-07-23Gunnery exercises 2300Z to 0800Z commencing daily 18 thru 22 jul in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1451/10 · Exercises2010-07-14 → 2010-07-23Gunnery exercises 0001Z to 0800Z daily 19 thru 23 jul in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1405/10 · Exercises2010-07-07 → 2010-07-16Gunnery exercises 2300Z to 0800Z commencing daily 11 thru 15 jul in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1404/10 · Exercises2010-07-07 → 2010-07-16Gunnery exercises 0001Z to 0800Z daily 12 thru 16 jul in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1354/10 · Exercises2010-06-30 → 2010-07-09Gunnery exercises 2300Z to 0800Z commencing daily 04 thru 08 jul in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1353/10 · Exercises2010-06-30 → 2010-07-09Gunnery exercises 0001Z to 0800Z daily 05 thru 09 jul in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1344/10 · Missiles2010-06-30 → 2010-07-06Hazardous operations 2300Z to 1000Z commencing daily 03 thru 05 jul in area bound by 41-10.0N 134-00.0E,…
- HYDROPAC 1307/10 · Exercises2010-06-24 → 2010-07-02Gunnery exercises 2300Z to 0800Z commencing daily 27 jun thru 01 jul in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1306/10 · Exercises2010-06-24 → 2010-07-02Gunnery exercises 0001Z to 0800Z daily 28 jun thru 02 jul in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1265/10 · Missiles2010-06-18 → 2010-06-26Hazardous operations 2300Z to 1000Z commencing daily 22 thru 25 jun in area bound by 40-54.5N 134-19.8E,…
- HYDROPAC 1256/10 · Exercises2010-06-16 → 2010-06-25Gunnery exercises 2300Z to 0800Z commencing daily 20 thru 24 jun in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1255/10 · Exercises2010-06-16 → 2010-06-25Gunnery exercises 0001Z to 0800Z daily 21 thru 25 jun in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1240/10 · Exercises2010-06-14 → 2010-06-18Gunnery exercises 172300Z to 181400Z jun in area bound by 38-26-31N 128-28-22E, 38-25-30N 128-55-11E,…
- HYDROPAC 1226/10 · Exercises2010-06-12 → 2010-06-14Gunnery exercises 162300Z to 171400Z jun, alternate 172300Z to 181400Z jun in area bound by 38-26-31N…
- HYDROPAC 1205/10 · Exercises2010-06-09 → 2010-06-18Gunnery exercises 2300Z to 0800Z commencing daily 13 thru 17 jun in area bound by 38-25N 128-45E, 38-25N…
- HYDROPAC 1204/10 · Exercises2010-06-09 → 2010-06-18Gunnery exercises 0001Z to 0800Z daily 14 thru 18 jun in area bound by 38-08N 129-51E, 38-08N 130-10E,…
- HYDROPAC 1146/10 · Exercises2010-06-02 → 2010-06-11Gunnery exercises 0001Z to 0800Z daily 07 thru 11 jun 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.