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% |
Ports on this sea · 5
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.
- Korsakov · Russian Federation29 archived
- Magadan · Russian Federation4 archived
- Abashiri · Japan9 archived
- Monbetsu · Japan0 archived
- Nemuro · Japan55 archived
Archive · 594 cancelled
- HYDROPAC 2845/26 · Missiles2026-10-01 → 2026-10-01Missile operations occur daily from 1400Z to 0900Z on 05 through 16 October in the Sea of Okhotsk off Kamchatka, and the warning cancels at 171000Z October 2026.
- HYDROPAC 2722/26 · Surveys2026-09-19 → 2026-09-23Survey operations by motor vessel Fyodor Kovrov are underway in the Sea of Okhotsk, Russia, until 25 October, with a one-mile berth requested; warning cancels 26 October.
- HYDROPAC 2676/26 · Surveys2026-09-16 → 2026-09-16Survey operations are underway in the Sea of Okhotsk, Russia, until 25 October by the Fyodor Kovrov, which requests a one-mile berth.
- HYDROPAC 2668/26 · Surveys2026-09-15 → 2026-09-16Survey operations are underway in the Sea of Okhotsk by the vessel Fyodor Kovrov until 25 October, with a one-mile berth requested.
- HYDROPAC 2652/26 · Surveys2026-09-14 → 2026-09-14Survey operations by motor vessel Fyodor Kovrov are underway in the Sea of Okhotsk, Russia, until 25 October; wide berth requested.
- HYDROPAC 2645/26 · Surveys2026-09-13 → 2026-09-14Survey operations are underway in the Sea of Okhotsk, Russia, until 25 October by the vessel Fyodor Kovrov, which requests a one-mile berth.
- HYDROPAC 2490/26 · Exercises2026-08-31 → 2026-08-31Gunnery exercises in progress until 031200Z sep in areas bound by: a. 50-05.00N 155-07.00E, 49-55.00N…
- HYDROPAC 2489/26 · Missiles2026-08-31 → 2026-08-31Missile operations 1400Z to 0900Z daily 04 thru 11 sep in area bound by 56-34.00N 154-14.00E, 56-34.00N…
- HYDROPAC 2484/26 · Exercises2026-08-31 → 2026-08-31Hazardous operations in progress until 030500Z sep in areas bound by: a. 51-03.30N 156-22.20E, 50-43.10N…
- HYDROPAC 2306/26 · Exercises2026-08-11 → 2026-08-21Gunnery exercises will take place in the Sea of Okhotsk, Russia, from August 14 20:00 UTC to August 15 12:00 UTC.
- HYDROPAC 2305/26 · Exercises2026-08-11 → 2026-08-21Gunnery exercises take place daily 09-14 August near the Kuril Islands in the Sea of Okhotsk; canceled 15 August 1300Z.
- HYDROPAC 2304/26 · Missiles2026-08-11 → 2026-08-21Missile operations are active in the Sea of Okhotsk, Russia, daily from 2000Z to 1200Z from 10 to 15 August.
- USGS-US6000S7S6 · Quakes2026-02-11 → 2026-02-14254 km se of okhotsk, russia
- USGS-US7000RP3W · Quakes2026-01-12 → 2026-01-15265 km n of kuril’sk, russia
- HYDROPAC 1643/25 · Surveys2025-06-24 → 2026-01-16Survey operations 25 jun until further notice by vessels in area bound by 52-37.78N 143-52.27E, 52-38.92N…
- HYDROPAC 1476/25 · Surveys2025-06-08 → 2025-12-04Survey operations in progress until further notice in area bound by 51-20.27N 144-32.12E, 51-17.98N…
- HYDROPAC 1452/25 · Surveys2025-06-05 → 2026-01-16Underwater operations in progress until 31 dec in area bound by 51-34.91N 143-24.26E, 51-34.90N 144-06.22E,…
- HYDROPAC 1451/25 · Surveys2025-06-05 → 2025-12-04Survey operations in progress until 21 oct by M/V trias in area bound by 51-34.92N 143-24.27E, 51-34.90N…
- USGS-US6000Q5RE · Quakes2025-04-13 → 2025-04-16Earthquake magnitude 5.9 (mww) in 48.733N 149.793E, depth 369 km at 130913Z apr 25
- USGS-US6000PFW7 · Quakes2024-12-27 → 2024-12-30Earthquake magnitude 6.8 (mww) in 47.300N 151.236E, depth 146 km at 271247Z dec 24
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.