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

Exercises63549%
Missiles19015%
Other1058%
Incidents1038%
Quakes877%
Derelicts514%
Surveys343%
Ordnance292%
Cable ops242%
Nav aids171%
Restricted151%
Wrecks50%
Debris30%
Containers20%
Volcanic10%

Archive · 1,301 cancelled

  1. HYDROPAC 1844/21 · Missiles2021-06-23 → 2021-06-23
    Missile operations 0900Z to 1100Z daily 23 thru 25 jun in area bound by 42-00N 132-20E, 42-20N 132-20E,…
  2. HYDROPAC 1650/21 · Exercises2021-06-03 → 2021-06-11
    Hazardous operations 2100Z to 1000Z daily 06 thru 10 jun in area bound by 42-40.0N 131-41.0E, 42-40.0N…
  3. HYDROPAC 1492/21 · Exercises2021-05-19 → 2021-05-29
    Hazardous operations 2100Z to 1000Z daily 23 thru 28 may in area bound by 42-40.0N 131-41.0E, 42-40.0N…
  4. HYDROPAC 1464/21 · Missiles2021-05-17 → 2021-05-21
    Missile operations 0001Z to 0800Z daily 20 and 21 may in area bound by 42-00N 132-20E, 42-20N 132-20E,…
  5. HYDROPAC 1377/21 · Missiles2021-05-07 → 2021-05-13
    Missile operations 2100Z to 1000Z daily 10 thru 12 may in area bound by 42-40.0N 131-41.0E, 42-40.0N…
  6. HYDROPAC 1330/21 · Exercises2021-05-02 → 2021-05-07
    Gunnery exercises 2100Z to 1000Z daily 03 thru 06 may in area bound by 42-56-42N 131-31-36E, 43-04-00N…
  7. HYDROPAC 1329/21 · Exercises2021-05-02 → 2021-05-07
    Gunnery exercises 2100Z to 1000Z daily 03 thru 06 may in area bound by 42-39N 132-23E, 42-39N 132-35E,…
  8. HYDROPAC 1328/21 · Other2021-05-02 → 2021-05-31
    Bombing exercises 2300Z to 1500Z daily 02 thru 07, 09 thru 14, 16 thru 21, 23 thru 28 and 30 may in area…
  9. HYDROPAC 1290/21 · Missiles2021-04-28 → 2021-05-07
    Missile operations 2100Z to 1000Z daily 03 thru 06 may in area bound by 42-40.0N 131-41.0E, 42-40.0N…
  10. HYDROPAC 1232/21 · Missiles2021-04-23 → 2021-04-30
    Missile operations 2100Z to 1000Z daily 28 and 29 apr in area bound by 42-50.3N 131-42.4E, 42-42.0N…
  11. HYDROPAC 1205/21 · Missiles2021-04-20 → 2021-04-28
    Missile operations 2100Z to 1000Z daily 25 thru 27 apr in area bound by 42-40.0N 131-41.0E, 42-40.0N…
  12. HYDROPAC 1157/21 · Missiles2021-04-15 → 2021-04-24
    Missile operations 2100Z to 1000Z daily 18 thru 23 apr in area bound by 42-40.0N 131-41.0E, 42-40.0N…
  13. HYDROPAC 1146/21 · Surveys2021-04-14 → 2021-04-23
    Underwater operations 162100Z to 232100Z apr in area bound by 43-04.0N 134-27.6E, 43-04.0N 134-42.2E,…
  14. HYDROPAC 1134/21 · Missiles2021-04-13 → 2021-04-15
    Missile operations 2100Z to 1000Z daily 18 thru 20 apr in area bound by 42-40.0N 131-41.0E, 42-40.0N…
  15. HYDROPAC 1125/21 · Other2021-04-12 → 2021-04-30
    Bombing exercises 2300Z to 1500Z daily 11 thru 16, 18 thru 23 and 25 thru 29 apr in area bound by 42-50-11N…
  16. HYDROPAC 1112/21 · Exercises2021-04-11 → 2021-04-17
    Gunnery exercises 2100Z to 1000Z daily until 16 apr in area bound by 42-39N 132-23E, 42-39N 132-35E, 42-38N…
  17. HYDROPAC 1111/21 · Exercises2021-04-11 → 2021-04-17
    Gunnery exercises 2100Z to 1000Z daily until 16 apr in area bound by 42-56-42N 131-31-36E, 43-04-00N…
  18. HYDROPAC 1102/21 · Missiles2021-04-10 → 2021-04-17
    Missile operations 2100Z to 1000Z daily 14 thru 16 apr in area bound by 42-40.0N 131-41.0E, 42-40.0N…
  19. HYDROPAC 1098/21 · Other2021-04-10 → 2021-04-12
    Bombing exercises in progress 2300Z to 1500Z daily 11 thru 16, 18 thru 23 and 25 thru 29 apr in area bound…
  20. HYDROPAC 1015/21 · Missiles2021-04-03 → 2021-04-10
    Missile operations 092100Z to 101000Z apr in area bound by 50-16-00N 140-28-12E, 50-11-18N 140-47-48E,…

Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.