Sea of Okhotsk
IHO sea area 54 · 135° to 167° E, 43° to 63° N
- in force
- 6
- last 12 months
- 19
- archive messages
- 600
- categories
- 16
What the archive shows
600 messages are recorded since 1997-10-22 for the Sea of Okhotsk. The selection uses the IHO sea area; a message may describe an exercise, equipment outage or continuing operation as well as a hazard report.
Surveys accounts for 168 of 600 recorded messages (28%), 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.
- An older warning still listed in force · issued 2025-01-29 09:55ZIn the Sea of Okhotsk, Kuril Islands, the Malokuril'skiy Light at 43-52.50N 146-48.80E is reduced to eight miles range, and the previous warning 3644/24 is cancelled.
In force now · 6
- HYDROPAC 2860/26 · Missiles2026-10-02Missile operations occur in the Sea of Okhotsk off Kamchatka from 1400 UTC to 0900 UTC daily, 5 through 15 October, within a bounded area.
- HYDROPAC 2014/26 · Surveys2026-07-14Survey operations by vessel Nikolay Trubyatchinskiy in Sea of Okhotsk near Kuril Islands from 15 July to 15 October, requesting 400 meter berth.
- HYDROPAC 1869/26 · Nav aids2026-06-29A wave rider buoy has been established in the Sea of Okhotsk, Russia at 51-22.54N 144-14.17E.
- HYDROPAC 1516/26 · Surveys2026-05-22Underwater operations are active in the Sea of Okhotsk, Russia, from 25 May through 31 December; wide berth requested.
- HYDROPAC 1291/26 · Surveys2026-04-23Underwater operations in the Sea of Okhotsk, Russia, run from 1 May to 31 October; wide berth requested.
- HYDROPAC 221/25 · Nav aids2025-01-29In the Sea of Okhotsk, Kuril Islands, the Malokuril'skiy Light at 43-52.50N 146-48.80E is reduced to eight miles range, and the previous warning 3644/24 is cancelled.
Longest in force
- HYDROPAC 221/25 · Nav aids2025-01-29In the Sea of Okhotsk, Kuril Islands, the Malokuril'skiy Light at 43-52.50N 146-48.80E is reduced to eight miles range, and the previous warning 3644/24 is cancelled.
- HYDROPAC 1291/26 · Surveys2026-04-23Underwater operations in the Sea of Okhotsk, Russia, run from 1 May to 31 October; wide berth requested.
- HYDROPAC 1516/26 · Surveys2026-05-22Underwater operations are active in the Sea of Okhotsk, Russia, from 25 May through 31 December; wide berth requested.
- HYDROPAC 1869/26 · Nav aids2026-06-29A wave rider buoy has been established in the Sea of Okhotsk, Russia at 51-22.54N 144-14.17E.
- HYDROPAC 2014/26 · Surveys2026-07-14Survey operations by vessel Nikolay Trubyatchinskiy in Sea of Okhotsk near Kuril Islands from 15 July to 15 October, requesting 400 meter berth.
By year
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
| Surveys | 168 | 28% |
| Exercises | 89 | 15% |
| Quakes | 80 | 13% |
| Cable ops | 65 | 11% |
| Missiles | 51 | 9% |
| Nav aids | 38 | 6% |
| Incidents | 27 | 5% |
| Restricted | 23 | 4% |
| Other | 21 | 4% |
| Towing | 13 | 2% |
| Derelicts | 9 | 2% |
| Wrecks | 9 | 2% |
| Structures | 3 | 1% |
| Debris | 2 | 0% |
| Containers | 1 | 0% |
| Ordnance | 1 | 0% |
Archive · 593 cancelled
- HYDROPAC 1786/15 · Cable ops2015-05-31 → 2015-06-01Seismic survey 02 jun thru 31 aug by M/V polarcus amani, M/V polarcus asima and M/V orient explorer towing…
- HYDROPAC 1748/15 · Cable ops2015-05-28 → 2015-06-18Seismic survey 29 may thru 30 jun by M/V geo caspian towing six 4900 meter long cables in areas bound by: a.…
- USGS-USB000SDTR · Quakes2014-09-18 → 2014-09-21Earthquake magnitude 5.5 (mwb) in 50.541N 150.135E, depth 500 km at 180417Z sep 14
- HYDROPAC 2305/14 · Cable ops2014-08-07 → 2014-09-13Seismic survey 10 aug thru 12 sep by M/V viking vision towing ten 6500 meter long cables in area bound by…
- HYDROPAC 2235/14 · Cable ops2014-07-31 → 2014-08-07Seismic survey 05 aug thru 07 sep by M/V viking vision towing 10000 meter long cable in area bound by…
- HYDROPAC 2227/14 · Surveys2014-07-30 → 2014-12-01Oceanographic operations in progress until 30 nov by M/V professor kurentsov towing 1300 meter long cable in…
- HYDROPAC 2174/14 · Other2014-07-25 → 2014-10-01Geophysical operations 26 jul thru 30 sep by M/V trias within 1000 meters of: a. 51-18-37.9N 144-21-43.8E
- HYDROPAC 1736/14 · Nav aids2014-06-16 → 2014-07-02Sakhalin-northwest Coast
- HYDROPAC 1692/14 · Surveys2014-06-12 → 2014-06-18Underwater operations in progress until 17 jun in area bound by 51-25-41.7N 143-27-24.8E, 51-30-50.1N…
- HYDROPAC 1450/14 · Cable ops2014-05-21 → 2014-09-21Cable operations 25 may thru 20 sep along tracklines joining: a. 53-29.11N 143-06.41E, 53-45.00N 144-40.00E,…
- HYDROPAC 1362/14 · Restricted2014-05-12 → 2014-12-01Cancel HYDROPAC 2877/11
- HYDROPAC 1289/14 · Missiles2014-05-04 → 2014-05-11Hazardous operations 0500Z to 1200Z daily 08 thru 11 may: a. in area bound by 47-36N 151-21E, 47-54N…
- HYDROPAC 113/14 · Nav aids2014-01-10 → 2014-01-18Russia
- HYDROPAC 64/14 · Incidents2014-01-07 → 2014-02-22Vessel, two persons on board, unreported
- HYDROPAC 3656/13 · Other2013-11-26 → 2013-12-10Geophysical operations 01 thru 31 dec by M/V professor kurentsov in areas bound by: a. 51-14.19N 144-15.69E,…
- HYDROPAC 3286/13 · Missiles2013-10-23 → 2013-10-31Hazardous operations 0400Z to 1000Z daily 28 thru 31 oct: a. in area bound by 47-36N 151-21E, 47-54N…
- USGS-USB000K3C1 · Quakes2013-10-01 → 2013-10-04Earthquake magnitude 6.7 (mww) in 53.200N 152.786E, depth 573 km at 010338Z oct 13
- HYDROPAC 2941/13 · Debris2013-09-26 → 2013-09-29Three mile long cables with buoys adrift within five miles of 50-58.3N 144-16.1E
- HYDROPAC 2556/13 · Nav aids2013-08-26 → 2013-09-06Russia
- HYDROPAC 2354/13 · Cable ops2013-08-07 → 2013-10-21Cable operations 12 aug thru 20 oct along trackline joining 53-29.11N 143-06.41E, 53-45.00N 144-40.00E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.