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
- USGS-US6000M0XT · Quakes2024-01-01 → 2024-01-047 km n of anamizu, japan
- HYDROPAC 2/24 · Quakes2024-01-01 → 2024-01-01Earthquake with preliminary magnitude of 7.4 occurred in 37-30.00N 137-12.00E at 010710Z jan
- USGS-US6000M0XM · Quakes2024-01-01 → 2024-01-048 km sw of anamizu, japan
- USGS-US6000M0XL · Quakes2024-01-01 → 2024-01-042024 noto peninsula, japan earthquake
- USGS-US6000M0XJ · Quakes2024-01-01 → 2024-01-0442 km ne of anamizu, japan
- HYDROPAC 3870/23 · Exercises2023-12-10 → 2023-12-11Gunnery exercises 2200Z to 1200Z daily 03 thru 29 dec in area bound by 46-46.00N 141-27.00E, 46-46.00N…
- HYDROPAC 3852/23 · Exercises2023-12-08 → 2023-12-11Gunnery exercises 2200Z to 0800Z daily 08 and 10 dec in area bound by 42-38.50N 132-15.00E, 42-40.00N…
- HYDROPAC 3796/23 · Exercises2023-12-01 → 2023-12-04Gunnery exercises 2200Z to 1200Z daily 03 thru 29 dec in area bound by 46-46.00N 141-27.00E, 46-46.00N…
- HYDROPAC 3379/23 · Exercises2023-10-25 → 2023-11-30Gunnery exercises 2200Z to 1000Z daily 29 oct thru 03 nov, 05 thru 10, 12 thru 17, 19 thru 24, 26 thru 29…
- HYDROPAC 3375/23 · Exercises2023-10-25 → 2023-10-31Gunnery exercises 0001Z to 0800Z daily 30 and 31 oct in area within five miles of 45-32.00N 141-18.50E
- HYDROPAC 3268/23 · Exercises2023-10-13 → 2023-10-31Gunnery exercises 2200Z to 1100Z daily 15 thru 30 oct in area bound by 46-46.00N 141-27.00E, 46-46.00N…
- HYDROPAC 3253/23 · Exercises2023-10-12 → 2023-10-19Gunnery exercises 2300Z to 0800Z daily 17 and 18 oct in area within five miles of 45-32.00N 141-18.50E
- HYDROPAC 3201/23 · Cable ops2023-10-07 → 2024-01-01Cable operations in progress until 31 dec in area bound by 49-06.08N 140-17.80E, 48-51.58N 141-20.40E,…
- HYDROPAC 3084/23 · Exercises2023-09-27 → 2023-10-31Gunnery exercises 2200Z to 1000Z daily 01 thru 06, 08 thru 13, 15 thru 20, 22 thru 27, 29 and 30 oct in area…
- HYDROPAC 3047/23 · Incidents2023-09-24 → 2023-10-13Distress signals received on 406 mhz from aircraft at 232252Z sep in: a. 40-37.90N 121-59.00E
- HYDROPAC 2764/23 · Exercises2023-08-28 → 2023-09-29Gunnery exercises 2200Z to 1000Z daily 31 aug, 01, 03 thru 08, 10 thru 15, 17 thru 22 and 24 thru 29 sep in…
- HYDROPAC 2741/23 · Missiles2023-08-25 → 2023-09-01Missile operations 0001Z to 1200Z daily 29 aug thru 01 sep in area bound by 42-20.00N 132-20.00E, 42-20.00N…
- HYDROPAC 2650/23 · Exercises2023-08-17 → 2023-08-23Gunnery exercises 0001Z to 0800Z daily 22 and 23 aug in area within five miles of 45-32.00N 141-18.50E
- HYDROPAC 2461/23 · Exercises2023-07-28 → 2023-08-05Gunnery exercises 2200Z to 1000Z daily 01 thru 04 aug in area bound by 42-40.00N 131-41.00E, 42-40.00N…
- HYDROPAC 2409/23 · Exercises2023-07-23 → 2023-07-27Gunnery exercises 231400Z to 271400Z jul in area bound by 42-25.00N 131-00.00E, 42-40.00N 131-41.00E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.