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% |
Ports on this sea · 48
Busiest first by annual vessel calls (IMF PortWatch); each port page shows the warnings within 60 nm, its World Port Index profile and monthly port calls.
- Busan · Korea6 archived
- Ulsan · Korea19 archived
- Kitakyushu (Wakamatsu) · Japan10 archived
- Hakata · Japan12 archived
- Vladivostok · Russian Federation305 archived
- Pohang · Korea17 archived
- Niigata · Japan19 archived
- Hakodate · Japan8 archived
- Nakhodka · Russian Federation389 archived
- Hibikinada · Japan9 archived
- Vostochnyy · Russian Federation391 archived
- Fushiki-Toyama · Japan16 archived
- Nagasaki · Japan11 archived
- Vanino · Russian Federation37 archived
- Imari · Japan9 archived
Archive · 1,301 cancelled
- HYDROPAC 2691/26 · Surveys2026-09-17 → 2026-09-17Russia conducts survey operations in the Sea of Japan from 21 to 26 September within five miles of 42-31.00N 131-53.00E, requesting vessels keep clear.
- HYDROPAC 2650/26 · Missiles2026-09-14 → 2026-09-14Russia conducts missile operations in the Sea of Japan from 15 September 1400Z to 16 September 1000Z within a defined area off its coast.
- HYDROPAC 2627/26 · Missiles2026-09-11 → 2026-09-03Russia plans missile operations in the Sea of Japan from 1400 to 1000 UTC daily 16-18 and 20-22 September, canceling 23 September at 1100 UTC.
- HYDROPAC 2611/26 · Surveys2026-09-10 → 2026-09-10Russia conducts survey operations in the Sea of Japan until 29 September in a defined area, requesting vessels keep clear.
- NAVAREA XI 404/26 · Missiles2026-09-09 → 2026-09-15Missile firing occurs daily from September 14 to 18, between 1400Z and 0800Z, in the Japan Sea area bounded by coordinates.
- HYDROPAC 2598/26 · Surveys2026-09-09 → 2026-09-09Russia conducts survey operations in the Sea of Japan from 10 September 0400 UTC to 29 September 1400 UTC, and requests other ships keep clear.
- HYDROPAC 2597/26 · Missiles2026-09-09 → 2026-09-09Russia conducts missile operations in the Sea of Japan from September 14 to 18, daily 1400Z to 0800Z, in a bounded area.
- HYDROPAC 2483/26 · Cable ops2026-08-31 → 2026-08-31Cable operations in progress until 15 dec by M/V topaz and M/V bureya within two miles of trackline joining…
- HYDROPAC 2395/26 · Missiles2026-08-20 → 2026-08-20Missile operations occur daily from 1400Z to 0800Z, 25 through 30 August, in the Sea of Japan.
- NAVAREA XI 377/26 · Missiles2026-08-20 → 2026-08-31Missile firing is scheduled daily in Japan Sea from August 25-30, 1400Z to 0800Z, in a defined area bounded by coordinates and shore.
- NAVAREA XI 341/26 · Exercises2026-07-27 → 2026-08-31Gunnery exercise in Japan Sea occurs daily 2200Z to 1000Z on specified dates from 31 July to 30 August in a bounded area.
- HYDROPAC 2151/26 · Exercises2026-07-27 → 2026-09-08Gunnery exercises occur daily from 2200Z to 1000Z on July 31, August 2-14, 16-21, 23-28, and 30 in the Sea of Japan near Russia.
- USGS-US7000SS03 · Quakes2026-06-10 → 2026-06-1348 km ese of ol’ga, russia
- HYDROPAC 55/26 · Missiles2026-01-08 → 2026-04-17Missile operations 2300Z to 1500Z daily 11 thru 16 and 18 thru 30 jan in area bound by 42-00.00N 132-20.00E,…
- HYDROPAC 52/26 · Exercises2026-01-07 → 2026-04-17Gunnery exercises 2200Z to 0800Z daily 11 thru 16, 18 thru 23 and 25 thru 30 jan in area bound by 42-40.00N…
- USGS-US7000RMQV · Quakes2026-01-06 → 2026-01-0913 km wsw of yasugichō, japan
- HYDROPAC 1562/25 · Exercises2025-06-16 → 2025-12-04Hazardous operations 2200Z to 1300Z daily 19 jun thru 14 jul in area bound by 47-01.00N 141-20.80E,…
- HYDROPAC 1520/25 · Exercises2025-06-12 → 2025-12-04Gunnery exercises 2200Z to 1000Z daily 11 thru 13, 15 thru 20, 22 thru 29 jun in area bound by 42-40.00N…
- HYDROPAC 1444/25 · Exercises2025-06-04 → 2025-12-04Gunnery exercises 2200Z to 1300Z daily 25 may to 19 jun in area bound by 47-01.00N 141-20.80E, 46-57.50N…
- HYDROPAC 229/25 · Exercises2025-01-29 → 2025-06-16Gunnery exercises 2200Z to 0800Z daily 31 jan thru 27 feb except saturdays in area bound by 42-40.00N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.