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 257/22 · Exercises2022-01-31 → 2022-02-01Gunnery exercises 312200Z jan to 010900Z feb in area bound by 42-40.0N 131-41.0E, 42-40.0N 131-57.0E,…
- HYDROPAC 236/22 · Exercises2022-01-28 → 2022-02-12Gunnery exercises 2200Z to 0900Z daily 01 thru 04 and 06 thru 11 feb in area bound by 42-40.0N 131-41.0E,…
- HYDROPAC 3684/21 · Missiles2021-12-20 → 2021-12-31Missile operations 1400Z to 0800Z daily 25 thru 30 dec in area bound by 42-23.5N 131-01.7E, 42-31.8N…
- HYDROPAC 3631/21 · Missiles2021-12-14 → 2021-12-25Missile operations 1400Z to 0800Z daily 19 thru 24 dec in area bound by 42-23.5N 131-01.7E, 42-31.8N…
- HYDROPAC 3568/21 · Missiles2021-12-09 → 2021-12-18Missile operations 2100Z to 1000Z daily 13 thru 17 dec in area bound by 41-40N 131-41E, 42-15N 131-41E,…
- HYDROPAC 3461/21 · Missiles2021-12-01 → 2021-12-11Missile operations 2100Z to 1000Z daily 05 thru 10 dec in areas bound by a. 42-40.0N 131-41.0E, 42-40.0N…
- HYDROPAC 3391/21 · Missiles2021-11-25 → 2021-12-04Missile operations 2100Z to 1000Z daily 29 nov thru 03 dec in area bound by 41-40N 131-41E, 42-15N 131-41E,…
- HYDROPAC 3390/21 · Missiles2021-11-25 → 2021-12-03Missile operations 2100Z to 1000Z daily 29 nov thru 03 dec in area bound by 42-40.0N 131-41.0E, 42-40.0N…
- HYDROPAC 3320/21 · Missiles2021-11-17 → 2021-11-27Missile operations 2100Z to 1000Z daily 21 thru 26 nov in area bound by 42-40.0N 131-41.0E, 42-40.0N…
- HYDROPAC 3055/21 · Exercises2021-10-25 → 2021-10-30Gunnery exercises 2200Z to 1000Z daily 28 and 29 oct in area bound by 42-40.0N 131-41.0E, 42-40.0N…
- HYDROPAC 2920/21 · Exercises2021-10-13 → 2021-10-18Gunnery exercises 180001Z to 180700Z oct in area bound by 42-40.0N 131-41.0E, 42-40.0N 131-57.0E, 42-38.5N…
- HYDROPAC 2900/21 · Exercises2021-10-11 → 2021-10-17Gunnery exercises 151400Z to 171400Z oct in area bound by 41-20N 131-40E, 42-17N 131-40E, 42-17N 133-32E,…
- HYDROPAC 2899/21 · Exercises2021-10-11 → 2021-10-16Gunnery exercises 2300Z to 1000Z daily 14 and 15 oct in area bound by 42-40.0N 131-41.0E, 42-40.0N…
- HYDROPAC 2877/21 · Missiles2021-10-08 → 2021-10-11Missile operations 102100Z to 111000Z oct in area bound by 42-27-36N 131-11-24E, 42-29-30N 131-12-30E,…
- HYDROPAC 2875/21 · Missiles2021-10-08 → 2021-10-13Missile operations 1400Z to 0800Z daily 11 and 12 oct in area bound by 42-27-36N 131-11-24E, 42-29-30N…
- HYDROPAC 2855/21 · Missiles2021-10-07 → 2021-10-08Missile operations 2100Z to 1000Z daily 06 thru 08 oct in area bound by 42-32.0N 131-41.0E, 42-37.2N…
- HYDROPAC 2830/21 · Missiles2021-10-05 → 2021-10-07Missile operations 2100Z to 1000Z daily 06 thru 08 oct in area bound by 42-32.0N 131-41.0E, 42-37.2N…
- HYDROPAC 2829/21 · Missiles2021-10-05 → 2021-10-08Missile operations 102100Z to 111000Z oct in area bound by 42-27-36N 131-11-24E, 42-29-30N 131-12-30E,…
- HYDROPAC 2828/21 · Missiles2021-10-05 → 2021-10-15Missile operations 0001Z to 1400Z daily 08, 12 thru 15 oct in area bound by 42-00N 132-20E, 42-20N 132-20E,…
- HYDROPAC 2787/21 · Missiles2021-10-01 → 2021-10-04Missile operations 2100Z to 1000Z daily 03 thru 08 oct in area bound by 41-12.0N 131-21.5E, 42-10.0N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.