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 1110/21 · Other2021-04-11 → 2021-04-24Bombing exercises in progress until 232359Z apr in area bound by 43-45-55N 145-34-11E, 43-46-06N 145-41-45E,…
- HYDROPAC 894/21 · Other2021-03-21 → 2021-04-02Bombing exercises 0001Z to 1300Z and 2200Z to 2359Z daily 24, 25, 31 mar and 01 apr in area bound by…
- HYDROPAC 631/21 · Exercises2021-02-25 → 2021-03-02Gunnery exercises 0001Z to 1100Z daily 02 thru 05 mar in area bound by 44-54-30N 147-38-10E, 44-56-50N…
- HYDROPAC 426/21 · Exercises2021-02-04 → 2021-02-27Gunnery exercises 0001Z to 1300Z and 2200Z to 2359Z daily 05, 09 thru 11, 17, 18, 25 and 26 feb in area…
- USGS-US7000D1Q5 · Quakes2021-01-20 → 2021-01-23Earthquake magnitude 5.6 (mww) in 49.711N 147.708E, depth 587 km at 201600Z jan 21
- HYDROPAC 3598/20 · Missiles2020-12-05 → 2020-12-16Missile operations 0600Z to 1300Z daily 10 thru 16 dec in areas bound by: a. 51-55N 152-20E, 51-40N 152-40E,…
- HYDROPAC 2574/20 · Wrecks2020-09-03 → 2020-12-11Submerged wellheads established in: a. 51-17-48N 144-16-08E
- USGS-US7000BFIJ · Quakes2020-09-01 → 2020-09-0469 km sw of palana, russia
- HYDROPAC 2067/20 · Surveys2020-07-13 → 2020-12-01Underwater operations 16 jul thru 30 nov in areas bound by: a. 51-23-15N 143-51-30E, 51-26-51N 143-49-57E,…
- HYDROPAC 1925/20 · Surveys2020-06-29 → 2020-07-31Bottom scientific mooring, at depth 16 meters, established until 30 jul in 53-32-52N 143-05-51E
- HYDROPAC 1910/20 · Surveys2020-06-27 → 2020-07-13Underwater operations 30 jun thru 20 jul in area bound by 51-34-55N 143-24-16E, 51-34-54N 144-06-13E,…
- HYDROPAC 1791/20 · Surveys2020-06-17 → 2020-09-03Survey operations 18 jun thru 18 sep by M/V nikolay trubyatchinsky in area bound by 46-01-10N 142-10-44E,…
- HYDROPAC 1740/20 · Surveys2020-06-12 → 2020-07-13Survey operations 13 jun thru 13 jul by M/V fyodor kovrov in area bound by 51-34-55N 143-24-16E, 51-34-54N…
- HYDROPAC 1566/20 · Surveys2020-05-26 → 2020-11-03Survey operations 30 may thru 02 nov by M/V trias and M/V diabaz in: a. area bound by 53-45.8N 143-40.6E,…
- HYDROPAC 1268/20 · Exercises2020-04-23 → 2020-04-30Gunnery exercises 262100Z to 302100Z apr in area bound by 47-45.8N 153-08.6E, 48-02.3N 152-45.8E, 48-17.8N…
- HYDROPAC 1137/20 · Missiles2020-04-09 → 2020-04-23Missile exercises 142100Z to 232100Z apr in area bound by 46-16N 142-40E, 46-23N 142-40E, 46-23N 142-50E,…
- HYDROPAC 1136/20 · Missiles2020-04-09 → 2020-04-23Missile exercises 142100Z to 232100Z apr in area bound by 46-03-00N 142-37-48E, 46-13-00N 142-37-48E,…
- HYDROPAC 1109/20 · Surveys2020-04-06 → 2021-01-01Underwater operations in progress until 31 dec in area bound by 52-10-30N 141-31-54E, 52-12-14N 141-32-12E,…
- HYDROPAC 1065/20 · Exercises2020-04-02 → 2020-04-10Gunnery exercises 042100Z to 102100Z apr in area bound by 47-45.8N 153-08.6E, 48-02.3N 152-45.8E, 48-17.8N…
- HYDROPAC 1012/20 · Missiles2020-03-26 → 2020-04-05Missile operations 312100Z mar to 052100Z apr in area bound by 51-15N 152-00E, 52-30N 150-30E, 53-50N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.