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 1917/17 · Surveys2017-05-31 → 2017-10-01Survey operations 01 jun thru 30 sep by M/V ZEPHIR-1 towing 8500 meter long cable in area bound by 47-41-19N…
- HYDROPAC 1699/17 · Missiles2017-05-14 → 2017-05-25Missile operations 2300Z to 1000Z commencing daily 18 thru 24 may in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 1627/17 · Cable ops2017-05-08 → 2017-05-22Cable operations 11 thru 23 may by M/V kddi ocean link in area bound by 48-13.0N 141-14.0E, 48-23.0N…
- HYDROPAC 1440/17 · Missiles2017-04-24 → 2017-04-29Missile operations 2300Z to 1000Z commencing daily 26 thru 28 apr in area bound by 41-39-42N 132-26-06E,…
- HYDROPAC 1221/17 · Missiles2017-04-05 → 2017-04-15Missile operations 2300Z to 1000Z commencing daily 09 thru 14 apr in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 1012/17 · Cable ops2017-03-23 → 2017-04-29Cable operations 28 mar thru 28 apr by M/V kddi ocean link in area bound by 48-12.8N 141-16.9E, 48-15.6N…
- HYDROPAC 647/17 · Exercises2017-02-23 → 2017-02-28Gunnery exercises 0001Z to 0800Z daily 27 and 28 feb within five miles of 45-32.0N 141-18.5E
- HYDROPAC 626/17 · Incidents2017-02-21 → 2017-03-08Distress signals received on 406 mhz at 210858Z feb in: a. 39-05-05N 147-57-36E
- HYDROPAC 596/17 · Nav aids2017-02-17 → 2017-02-26NAVTEX station yokohama (I) 35-14.6N 139-55.3E off air 230555Z to 230740Z and 260555Z to 260950Z feb
- HYDROPAC 568/17 · Missiles2017-02-16 → 2017-02-22Missile operations 2300Z to 1000Z commencing daily 20 and 21 feb in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 372/17 · Missiles2017-02-01 → 2017-02-09Missile operations 2300Z to 1000Z commencing daily 05 thru 08 feb in area bound by 42-15.0N 131-41.0E,…
- HYDROPAC 350/17 · Nav aids2017-01-30 → 2017-01-31NAVTEX station yokohama (I) 35-14.6N 139-55.3E off air
- HYDROPAC 3539/16 · Exercises2016-11-16 → 2016-11-18Gunnery exercises 0001Z to 0800Z daily 17 and 18 nov within five miles of 45-32.0N 141-18.5E
- HYDROPAC 3475/16 · Surveys2016-11-11 → 2017-04-07Underwater operations 13 nov until further notice by M/V buhoro towing equipment along trackline joining…
- USGS-US20007FTA · Quakes2016-10-21 → 2016-10-246 km s of kurayoshi, japan
- HYDROPAC 2642/16 · Other2016-09-01 → 2017-04-05Mys orlova light 51-25.4N 140-52.9E at reduced intensity
- USGS-US10006DR1 · Quakes2016-08-14 → 2016-08-1748 km s of aleksandrovsk-sakhalinskiy, russia
- HYDROPAC 2133/16 · Missiles2016-07-16 → 2016-07-26Hazardous operations 2300Z to 1000Z commencing daily 21 thru 25 jul in area bound by 41-33-18N 132-22-48E,…
- HYDROPAC 1544/16 · Surveys2016-05-25 → 2016-05-28Survey operations in progress until 27 may by M/V northern endeavour along trackline joining 34-54N 128-59E,…
- HYDROPAC 1479/16 · Surveys2016-05-20 → 2016-05-24Survey operations 21 thru 23 may by M/V northern endeavour in area bound by 35-09N 129-12E, 35-10N 129-13E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.