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 · 594 cancelled
- HYDROPAC 2801/17 · Surveys2017-08-18 → 2017-11-02Survey operations 20 aug thru 01 nov by M/V strelets, M/V orion, M/V vega and M/V nautilus towing four mile…
- HYDROPAC 2790/17 · Surveys2017-08-17 → 2017-09-21Underwater operations in progress until 20 sep by M/V geophisik area bound by 52-39-00N 143-19-08E,…
- HYDROPAC 2771/17 · Wrecks2017-08-16 → 2017-10-03Russia DNC 24
- HYDROPAC 2549/17 · Exercises2017-07-26 → 2017-08-10Gunnery exercises 312100Z jul to 102100Z aug in area bound by 44-54.30N 147-38.10E, 44-56.50N 147-48.30E,…
- HYDROPAC 2522/17 · Exercises2017-07-23 → 2017-07-29Gunnery exercises 0300Z to 0800Z daily 28 and 29 jul in area bound by 44-43.0N 147-37.3E, 44-50.0N…
- HYDROPAC 2420/17 · Surveys2017-07-14 → 2017-08-11Survey operations in progress until 10 aug by M/V amazon warrior towing 14 6000 meter long cables in area…
- HYDROPAC 2358/17 · Surveys2017-07-07 → 2017-08-17Underwater operations in progress until 16 aug by M/V geophisik in area bound by 52-39-00N 143-19-08E,…
- HYDROPAC 2303/17 · Surveys2017-07-01 → 2017-07-14Survey operations in progress until 10 aug by M/V amazon warrior towing 14 6000 meter long cables in area…
- HYDROPAC 2277/17 · Surveys2017-06-29 → 2017-08-01Survey operations 04 thru 31 jul by M/V iskatel in area bound by 53-24-21N 143-30-51E, 53-35-02N 143-24-16E,…
- HYDROPAC 2246/17 · Missiles2017-06-27 → 2017-07-05Missile operations 2200Z to 0300Z commencing daily 02 thru 04 and 0400Z to 1000Z daily 03 thru 05 jul in…
- HYDROPAC 2212/17 · Missiles2017-06-24 → 2017-07-01Missile operations 292200Z to 300300Z jun and 0400Z to 1000Z daily 30 jun and 01 jul in area bound by…
- HYDROPAC 1916/17 · Surveys2017-05-31 → 2017-06-25Underwater operations 03 thru 24 jun by M/V geophyisik in area bound by 50-48-48N 143-40-02E, 51-34-55N…
- HYDROPAC 126/17 · Restricted2017-01-13 → 2017-06-10Navigation prohibited until further notice within five miles of matua (48-06N 153-12E)
- HYDROPAC 3774/16 · Surveys2016-12-05 → 2017-10-22Scientific moorings established in: a. 51-25.4N 144-04.6E, at depth 140 meters
- HYDROPAC 3103/16 · Missiles2016-10-11 → 2016-10-13Hazardous operations 120700Z to 121200Z and 122300Z to 130800Z oct in area bound by 44-59-42N 147-31-00E,…
- HYDROPAC 3072/16 · Other2016-10-07 → 2017-01-28Submerged wells established in: a. 51-27-19.05N 143-53-12.51E, 5.3 meters above seabed
- HYDROPAC 3048/16 · Cable ops2016-10-06 → 2016-12-10Seismic survey 09 oct thru 09 dec by M/V geophysic towing 1500 meter long cable in area bound by 51-12-28N…
- HYDROPAC 3022/16 · Missiles2016-10-03 → 2016-10-12Hazardous operations 0700Z to 1400Z daily, 08 thru 12 oct: a. in area bound by 47-36N 151-21E, 47-54N…
- HYDROPAC 2853/16 · Surveys2016-09-19 → 2016-11-11Survey operations 20 sep thru 10 nov by M/V fedor kovrov towing equipment in area bound by 51-25-27N…
- HYDROPAC 2813/16 · Exercises2016-09-15 → 2016-09-30Gunnery exercises 0001Z to 0800Z daily 20 thru 30 sep in area bound by 45-00-23N 147-43-22E, 44-56-01N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.