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 885/20 · Exercises2020-03-17 → 2020-03-24Hazardous operations 172100Z to 242100Z mar in area bound by 42-42.0N 134-14.0E, 42-57.0N 134-14.0E,…
- HYDROPAC 819/20 · Missiles2020-03-11 → 2020-03-21Missile operations 2200Z to 1000Z commencing daily 15 thru 20 mar in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 672/20 · Missiles2020-02-26 → 2020-03-07Missile operations 2200Z to 1000Z commencing daily 01 thru 06 mar in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 608/20 · Missiles2020-02-20 → 2020-02-29Missile operations 2200Z to 1000Z commencing daily 24 thru 28 feb in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 515/20 · Other2020-02-13 → 2020-02-16Numerous fishing vessels in: a. 48-00N 141-17E
- HYDROPAC 502/20 · Missiles2020-02-12 → 2020-02-22Missile operations 2200Z to 1000Z commencing daily 16 thru 21 feb in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 389/20 · Missiles2020-02-05 → 2020-02-15Missile operations 2200Z to 1000Z commencing daily 09 thru 14 feb in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 336/20 · Missiles2020-01-30 → 2020-02-08Missile operations 2200Z to 1000Z commencing daily 02 thru 07 feb in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 324/20 · Exercises2020-01-29 → 2020-02-05Gunnery exercises 0001Z to 0800Z daily 03 thru 05 feb in area within five miles of 45-32.0N 141-18.5E
- HYDROPAC 241/20 · Missiles2020-01-22 → 2020-01-31Missile operations 2200Z to 1000Z commencing daily 26 thru 30 jan in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 4153/19 · Exercises2019-12-15 → 2019-12-20Gunnery exercises 200001Z to 200800Z dec in area within five miles of 45-32.0N 141-18.5E
- HYDROPAC 3712/19 · Derelicts2019-11-12 → 2019-11-15Derelict F/V, partially submerged and adrift in vicinity 43-30.9N 135-59.5E at 120438Z nov
- HYDROPAC 3668/19 · Derelicts2019-11-07 → 2019-11-10Derelict F/V, white hull, partially submerged and adrift in vicinity 43-18.2N 137-00.4E at 060507Z nov
- HYDROPAC 3603/19 · Incidents2019-10-31 → 2019-11-15Distress signal received in 38-59.2N 133-24.4E at 311214Z oct
- HYDROPAC 3428/19 · Derelicts2019-10-18 → 2019-10-21Derelict F/V, partially submerged and adrift in 40-54N 132-30E at 180101Z oct
- HYDROPAC 3403/19 · Incidents2019-10-16 → 2019-11-01Numerous persons in water from F/V in vicinity 39-37N 134-30E at 160145Z oct
- HYDROPAC 3294/19 · Derelicts2019-10-05 → 2019-10-08Derelict F/V adrift in vicinity 41-01N 135-21E at 051300Z
- HYDROPAC 3283/19 · Missiles2019-10-04 → 2019-10-13Missile operations 08 thru 12 oct in area bound by 42-00N 132-20E, 42-20N 132-20E, 42-20N 133-10E, 42-00N…
- HYDROPAC 2978/19 · Derelicts2019-09-11 → 2019-09-14Derelict F/V, partially submerged and adrift in vicinity 44-09N 135-57E at 110645Z sep
- HYDROPAC 2919/19 · Missiles2019-09-06 → 2019-09-18Missile operations 1400Z to 0800Z commencing daily 10 thru 17 sep in area bound by 42-16.0N 131-48.7E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.