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 1699/19 · Missiles2019-05-22 → 2019-06-01Missile operations 2200Z to 1000Z commencing daily 26 to 31 may in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 1662/19 · Missiles2019-05-17 → 2019-05-25Missile operations 2200Z to 1000Z commencing daily 19 to 24 may in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 1546/19 · Missiles2019-05-07 → 2019-05-18Missile operations 2200Z to 1000Z commencing daily 12 to 17 may in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 1543/19 · Exercises2019-05-07 → 2019-05-25Hazardous operations 2200Z to 1000Z commencing daily 12 thru 24 may in area bound by 43-53.0N 135-50.5E,…
- HYDROPAC 1389/19 · Missiles2019-04-25 → 2019-05-09Missile operations 2200Z to 1000Z commencing daily 29 apr and 05 to 08 may in area bound by 42-15.0N…
- HYDROPAC 1341/19 · Derelicts2019-04-20 → 2019-04-23Derelict ten meter wooden vessel, partially submerged and adrift in vicinity 42-29.8N 132-30.8E
- HYDROPAC 1306/19 · Missiles2019-04-17 → 2019-04-27Missile operations 2200Z to 1000Z commencing daily 21 thru 26 apr in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 1209/19 · Missiles2019-04-10 → 2019-04-20Missile operations 2200Z to 1000Z commencing daily 14 thru 19 apr in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 1023/19 · Missiles2019-03-27 → 2019-04-06Missile operations 2200Z to 1000Z commencing daily 31 mar thru 05 apr in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 920/19 · Missiles2019-03-20 → 2019-03-30Missile operations 2200Z to 1000Z commencing daily 24 thru 29 mar in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 908/19 · Exercises2019-03-19 → 2019-03-28Hazardous operations 242100Z to 282100Z mar in area bound by 42-49.0N 134-14.0E, 42-57.0N 134-14.0E,…
- HYDROPAC 839/19 · Missiles2019-03-13 → 2019-03-23Missile operations 2300Z to 1000Z commencing daily 17 thru 22 mar in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 617/19 · Exercises2019-02-23 → 2019-03-01Gunnery exercises 0001Z to 0800Z daily 28 feb and 01 mar in area within five miles of 45-32.0N 141-18.5E
- HYDROPAC 590/19 · Exercises2019-02-21 → 2019-04-21Hazardous operations 220001Z feb to 202359Z apr in areas bound by: a. 47-12.9N 139-58.5E, 47-23.3N…
- HYDROPAC 568/19 · Incidents2019-02-18 → 2019-02-18Distress signals received on 406 mhz in 40-12.5N 133-28.0E at 181633Z feb
- HYDROPAC 532/19 · Other2019-02-15 → 2019-02-18Numerous fishing vessels reported in: a. 47-10N 139-30E
- HYDROPAC 449/19 · Exercises2019-02-08 → 2019-02-24Hazardous operations 132100Z to 242100Z feb in area bound by 42-49.0N 134-14.0E, 42-57.0N 134-14.0E,…
- HYDROPAC 430/19 · Exercises2019-02-06 → 2019-03-01Hazardous operations 110001Z to 282359Z feb in area bound by 46-55.3N 139-38.0E, 47-40.0N 139-32.0E,…
- HYDROPAC 278/19 · Exercises2019-01-25 → 2019-02-11Hazardous operations 280001Z jan to 102359Z feb in area bound by 46-55.3N 139-38.0E, 47-40.0N 139-32.0E,…
- HYDROPAC 208/19 · Exercises2019-01-19 → 2019-01-28Hazardous operations, 210001Z to 280001Z jan in area bound by 46-55.3N 139-38.0E, 47-40.0N 139-32.0E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.