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 2425/21 · Restricted2021-08-25 → 2021-09-03The following ports are closed to vessel arrivals due to provision of services until further notice: a.…
- HYDROPAC 2424/21 · Surveys2021-08-25 → 2021-10-01Survey operations 28 aug thru 30 sep by M/V trias in area bound by 53-27-10N 143-23-15E, 53-27-40N…
- HYDROPAC 2401/21 · Surveys2021-08-22 → 2021-10-09Survey operations by M/V vyacheslav tikhonov: a. 25 aug thru 03 sep in area bound by 50-45-14N 144-34-48E,…
- HYDROPAC 2393/21 · Exercises2021-08-21 → 2021-09-17Gunnery exercises 0001Z to 1100Z daily 26 thru 29 aug and 13 thru 17 sep in area bound by 44-54-30N…
- HYDROPAC 2376/21 · Surveys2021-08-19 → 2021-12-03Survey operations 22 aug thru 02 dec by M/V nikolya trubyatchinskiy in area bound by 51-21-09N 143-53-07E,…
- HYDROPAC 2161/21 · Surveys2021-07-27 → 2021-08-24Survey operations 30 jul thru 23 aug by M/V pegas in area bound by 49-00N 151-00E, 49-00N 153-00E, 47-30N…
- HYDROPAC 1920/21 · Surveys2021-06-30 → 2021-07-06Survey operations in progress until 100600Z jul: a. in area bound by 49-40-00N 151-45-00E, 49-44-00N…
- HYDROPAC 1858/21 · Nav aids2021-06-24 → 2021-11-27Buoy, yellow, fl, temporarily established 26 jun thru 26 nov in 51-28.4N 143-51.7E
- HYDROPAC 1826/21 · Other2021-06-21 → 2021-06-25Bombing exercises 0001Z to 1400Z daily 21 thru 25 jun in area bound by 44-51-39N 147-36-44E, 44-56-20N…
- HYDROPAC 1825/21 · Surveys2021-06-21 → 2021-08-25Survey operations in progress until 31 aug by M/V vyacheslav tikhonov and M/V px geo towing 4050 meter long…
- HYDROPAC 1805/21 · Surveys2021-06-18 → 2021-09-11Survey operations in progress until 31 dec in area bound by 51-26-12N 143-27-03E, 51-31-36N 143-47-51E,…
- HYDROPAC 1777/21 · Exercises2021-06-16 → 2021-06-25Gunnery exercises 0001Z to 1100Z daily 21 thru 25 jun in area bound by 44-54-30N 147-38-10E, 44-56-50N…
- HYDROPAC 1769/21 · Exercises2021-06-15 → 2021-06-25Gunnery exercises 2200Z to 1000Z daily 20 thru 24 jun in area bound by 46-23N 142-40E, 46-23N 142-50E,…
- HYDROPAC 1768/21 · Exercises2021-06-15 → 2021-06-25Gunnery exercises 2200Z to 1000Z daily 20 thru 24 jun in area bound by 44-05.0N 146-43.5E, 44-05.0N…
- HYDROPAC 1767/21 · Exercises2021-06-15 → 2021-06-26Gunnery exercises 2200Z to 1000Z daily 20 thru 25 jun in area bound by 44-22N 147-10E, 44-22N 147-20E,…
- HYDROPAC 1766/21 · Exercises2021-06-15 → 2021-06-26Gunnery exercises 2200Z to 1000Z daily 20 thru 25 jun in area bound by 46-30N 147-35E, 46-30N 147-50E,…
- HYDROPAC 1765/21 · Exercises2021-06-15 → 2021-06-26Gunnery exercises 2200Z to 1000Z daily 20 thru 25 jun in area bound by 44-50N 147-55E, 44-50N 148-10E,…
- HYDROPAC 1740/21 · Other2021-06-12 → 2021-06-18Bombing exercises 2000Z to 0800Z daily 15 thru 17 jun in area bound by 45-20N 148-50E, 45-40N 148-50E,…
- HYDROPAC 1725/21 · Nav aids2021-06-11 → 2021-06-25Isolated danger buoy 52-33.4N 141-27.1E missing
- HYDROPAC 1649/21 · Surveys2021-06-03 → 2021-06-29Survey operations 08 thru 28 jun by M/V pegas in area bound by 49-00N 151-00E, 49-00N 153-00E, 47-30N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.