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% |
| Ordnance | 1 | 0% |
| Containers | 1 | 0% |
Archive · 594 cancelled
- HYDROPAC 1592/04 · Surveys2004-10-06 → 2004-11-01Underwater operations thru 31 oct along trackline between 52-05.1N 141-20.9E and 52-06.0N 141-38.0E 2.…
- HYDROPAC 1551/04 · Cable ops2004-09-28 → 2004-10-20Seismic survey in progress until 20 oct by vessel towing four three mile long cables in area bound by 53-08N…
- HYDROPAC 1481/04 · Surveys2004-09-14 → 2004-10-17Underwater operations in progress until 16 oct in area bound by 51-23-31N 143-27-56E, 51-24-36N 143-27-35E,…
- HYDROPAC 1438/04 · Exercises2004-09-05 → 2004-09-11Hazardous operations 0001Z to 0800Z daily 09 thru 11 sep in area bound by 47-40N 143-00E, 48-35N 143-00E,…
- HYDROPAC 1340/04 · Surveys2004-08-16 → 2004-09-06Hydrographic survey in progress until 05 sep in area bound by 57-11.0N 156-38.5E, 57-32.0N 155-22.0E,…
- HYDROPAC 1309/04 · Surveys2004-08-11 → 2004-09-26Hydrographic survey in progress until 25 sep by M/V gelovany towing 300 meter long cable in area bound by…
- HYDROPAC 1266/04 · Cable ops2004-08-04 → 2004-10-01Seismic survey in progress until 30 sep by M/V ZEPHYR-1 towing 6500 meter long cable in area bound by 53-38N…
- USGS-USP000CZS4 · Quakes2004-07-08 → 2004-07-11Earthquake magnitude 6.4 (mwb) in 47.198N 151.303E, depth 128 km at 081030Z jul 04
- HYDROPAC 1125/04 · Cable ops2004-07-07 → 2004-08-01Seismic survey in progress until 312359Z jul by M/V zephyr 1 towing 6500 meter long cable in area bound by…
- HYDROPAC 2028/03 · Surveys2003-11-24 → 2003-12-27Survey operations in progress until 20 jan by M/V zephyr I towing 6500 meter long cable in area bound by…
- HYDROPAC 2018/03 · Nav aids2003-11-22 → 2003-11-24Mys kurbatova light 50-51.9N 156-28.7E unlit
- HYDROPAC 1745/03 · Ordnance2003-10-08 → 2004-02-19Unexploded ordnance within one mile of 46-35.0N 142-55.5E
- HYDROPAC 1644/03 · Nav aids2003-09-24 → 2003-10-25Mys chibuynyy light 50-46.0N 156-11.9E range temporarily reduced to eight miles
- HYDROPAC 1610/03 · Nav aids2003-09-18 → 2003-09-24Chibuynyy light 50-46.0N 156-11.9E unlit
- HYDROPAC 1497/03 · Exercises2003-08-30 → 2003-09-05Hazardous operations 0300Z to 1100Z daily 02 thru 05 sep: a. in area bound by 47-36N 151-21E, 47-54N…
- HYDROPAC 1440/03 · Surveys2003-08-22 → 2003-09-09Hydrographic survey in progress until 08 sep by M/V gelovany towing 300 meter long cable in area bound by…
- HYDROPAC 1313/03 · Cable ops2003-07-29 → 2003-10-01Seismic survey 30 jul thru 30 sep by M/V orient explorer towing four 5000 meter long cables in area bound by…
- HYDROPAC 1135/03 · Towing2003-07-01 → 2003-10-01Geophysical survey 05 jul thru 30 sep by M/V ramform vanguard towing ten 5000 meter long cables in area…
- HYDROPAC 1124/03 · Surveys2003-06-30 → 2003-07-25Hydrographic survey in progress until further notice in area bound by 54-20.0N 153-59.5E, 55-14.0N…
- HYDROPAC 445/03 · Other2003-03-13 → 2004-03-13Light, fl 2 sec grg six miles with sectors green 015-067, red 067-127, green 127-205, established in…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.