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
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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 2780/20 · Exercises2020-09-24 → 2020-10-03Gunnery exercises 2200Z to 0400Z daily 28, 29 sep and 01 oct, 2200Z to 1000Z daily 30 sep and 02 oct in area…
- HYDROPAC 2723/20 · Exercises2020-09-18 → 2020-09-23Gunnery exercises 0001Z to 0800Z daily 23, 28, and 29 sep in area within five miles of 45-32.0N 141-18.5E
- HYDROPAC 2683/20 · Exercises2020-09-15 → 2020-09-26Gunnery exercises 2200Z to 1000Z daily 20 thru 23 and 25 sep in area bound by 42-15.0N 131-41.0E, 42-40.0N…
- HYDROPAC 2644/20 · Exercises2020-09-11 → 2020-09-19Gunnery exercises 2200Z to 1000Z daily 16 thru 18 sep in area bound by 42-15.0N 131-41.0E, 42-40.0N…
- HYDROPAC 2457/20 · Exercises2020-08-22 → 2020-08-28Gunnery exercises 0001Z to 0800Z daily 27 thru 28 aug in area within five miles of 45-32.0N 141-18.5E
- HYDROPAC 2433/20 · Exercises2020-08-19 → 2020-08-29Gunnery exercises 2200Z to 1000Z daily 23 thru 28 aug in area bound by 42-15.0N 131-41.0E, 42-40.0N…
- HYDROPAC 2238/20 · Exercises2020-07-29 → 2020-08-08Gunnery exercises 2200Z to 1000Z daily 02 thru 07 aug in area bound by 42-15.0N 131-41.0E, 42-40.0N…
- HYDROPAC 2095/20 · Missiles2020-07-15 → 2020-07-22Missile operations 2100Z to 0800Z daily 19 thru 21 jul in area bound by 41-40N 131-41E, 42-15N 131-41E,…
- HYDROPAC 2028/20 · Exercises2020-07-09 → 2020-07-14Gunnery exercises 140100Z to 140600Z jul in area within five miles of 45-32.0N 141-18.5E
- HYDROPAC 1965/20 · Exercises2020-07-02 → 2020-07-08Gunnery exercises 0001Z to 0800Z daily 07 and 08 jul in area within five miles of 45-32.0N 141-18.5E
- HYDROPAC 1734/20 · Exercises2020-06-11 → 2020-06-20Torpedo exercises 142100Z thru 202100Z jun in area bound by 41-40N 131-41E, 42-15N 131-41E, 42-15N 132-49E,…
- HYDROPAC 1725/20 · Exercises2020-06-10 → 2020-06-19Gunnery exercises 2200Z to 1000Z daily 14 thru 18 jun in area bound by 42-15.0N 131-41.0E, 42-40.0N…
- HYDROPAC 1654/20 · Exercises2020-06-03 → 2020-06-11Gunnery exercises 2200Z to 1000Z daily 07 and 10 jun in area bound by 42-15.0N 131-41.0E, 42-40.0N…
- HYDROPAC 1624/20 · Missiles2020-05-30 → 2020-06-05Missile operations 2200Z to 1000Z daily 03 and 04 jun in area bound by 42-15.0N 131-41.0E, 42-40.0N…
- HYDROPAC 1603/20 · Surveys2020-05-28 → 2020-06-12Survey operations 281400Z may to 121400Z jun by M/V antarktida in area bound by 46-40N 139-04E, 47-15N…
- HYDROPAC 1600/20 · Exercises2020-05-28 → 2020-06-10Hazardous operations 022100Z to 102100Z jun in area bound by 42-49.0N 134-14.0E, 42-57.0N 134-14.0E,…
- HYDROPAC 1341/20 · Missiles2020-05-01 → 2020-05-19Missile operations 2200Z to 1000Z commencing daily 06, 07, 11 thru 15, 17, and 18 may in area bound by…
- HYDROPAC 1278/20 · Missiles2020-04-24 → 2020-04-30Missile operations 2200Z to 1000Z commencing daily 26 thru 29 apr in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 1269/20 · Exercises2020-04-23 → 2020-04-30Hazardous operations 262100Z to 302100Z apr in area bound by 42-49.0N 134-14.0E, 42-57.0N 134-14.0E,…
- HYDROPAC 1061/20 · Missiles2020-04-01 → 2020-04-18Missile operations 2200Z to 1000Z commencing daily 05 thru 10 and 12 thru 17 apr in area bound by 42-15.0N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.