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 1175/24 · Restricted2024-04-11 → 2024-04-17Navigation prohibited 111100Z to 171100Z apr in area bound by 43-09.40N 145-54.00E, 44-20.30N 145-54.00E,…
- HYDROPAC 1173/24 · Restricted2024-04-11 → 2024-04-17Navigation prohibited until 171200Z apr in area bound by 48-32.50N 153-49.50E, 48-48.20N 153-40.40E,…
- HYDROPAC 1172/24 · Restricted2024-04-11 → 2024-04-17Navigation prohibited 111200Z to 171200Z apr in area bound by 51-03.30N 156-22.20E, 50-43.10N 156-52.00E,…
- HYDROPAC 1171/24 · Restricted2024-04-11 → 2024-04-17Navigation prohibited 111200Z to 171200Z apr in area bound by 48-29.10N 153-07.30E, 48-28.40N 153-24.50E,…
- HYDROPAC 1158/24 · Restricted2024-04-10 → 2024-04-11Navigation prohibited 100800Z to 110800Z apr in area bound by 48-32.50N 153-49.50E, 48-48.20N 153-40.40E,…
- HYDROPAC 3861/23 · Exercises2023-12-09 → 2023-12-25Gunnery exercises 2300Z to 1000Z daily 14 thru 24 dec in area bound by 46-13.00N 142-37.80E, 46-13.00N…
- HYDROPAC 3312/23 · Missiles2023-10-17 → 2023-10-28Missile operations 0600Z to 1300Z daily 22 thru 28 oct in areas bound by: a. 51-55.00N 152-00.00E, 51-55.00N…
- HYDROPAC 3103/23 · Exercises2023-09-29 → 2023-11-05Gunnery exercises 2300Z to 1000Z daily 04 oct thru 04 nov in area bound by 44-05.00N 146-56.00E, 44-05.00N…
- HYDROPAC 3026/23 · Surveys2023-09-22 → 2023-09-28Underwater operations 261400Z to 281400Z sep in area bound by 46-17.50N 142-33.80E, 46-23.00N 142-51.00E,…
- HYDROPAC 3010/23 · Surveys2023-09-21 → 2023-09-22Underwater operations 261400Z to 281400Z sep in area bound by 46-17.50N 142-33.80E, 46-23.00N 142-51.00E,…
- HYDROPAC 2950/23 · Derelicts2023-09-14 → 2023-09-17Vessel adrift in vicinity 53-49.70N 141-27.50E at 140825Z sep
- USGS-US7000KSRL · Quakes2023-09-01 → 2023-09-0413 km e of severo-kuril’sk, russia
- HYDROPAC 2632/23 · Surveys2023-08-15 → 2023-09-19Survey operations 18 aug thru 18 sep by M/V fyodor kovrov in area bound by 51-34.91N 143-24.26E, 51-34.90N…
- HYDROPAC 2604/23 · Surveys2023-08-12 → 2023-08-19Underwater operations 171400Z T0 191400Z aug in area bound by 46-17.50N 142-33.80E, 46-23.00N 142-51.00E,…
- USGS-US7000KANE · Quakes2023-06-23 → 2023-06-2694 km ne of hamatonbetsu, japan
- HYDROPAC 2042/23 · Surveys2023-06-20 → 2023-09-06Survey operations in progress until 05 sep by M/V marshal gelovany in area bound by 51-00.00N 154-00.00E,…
- USGS-US7000K96N · Quakes2023-06-17 → 2023-06-20Earthquake magnitude 5.6 (mww) in 47.972N 147.370E, depth 417 km at 171136Z jun 23
- HYDROPAC 1916/23 · Surveys2023-06-08 → 2023-08-06Survey operations 12 jun thru 12 aug by M/V geolog dimitriy nalivkin in area bound by 51-24.30N 144-06.20E,…
- HYDROPAC 1831/23 · Missiles2023-06-01 → 2023-06-20Missile and gunnery operations 2200Z to 1000Z daily 04 thru 19 jun in areas bound by: a. 45-05.00N…
- HYDROPAC 1829/23 · Missiles2023-06-01 → 2023-06-20Missile and gunnery operations 2200Z to 1000Z daily 04 thru 19 jun in area bound by 50-55.00N 156-00.00E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.