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 1050/16 · Exercises2016-04-08 → 2016-04-28Gunnery exercises 0100Z to 0800Z daily 13 thru 28 apr in area bound by 45-00-23N 147-43-22E, 44-56-01N…
- HYDROPAC 3718/15 · Cable ops2015-11-13 → 2016-02-14Cable laying in progress until further notice along trackline joining 59-33-53.78N 151-15-16.53E,…
- HYDROPAC 3532/15 · Missiles2015-10-27 → 2015-11-04Hazardous operations 0600Z to 1300Z daily 01 thru 04 nov: a. in area bound by 47-36N 151-21E, 47-54N…
- HYDROPAC 3498/15 · Missiles2015-10-24 → 2015-10-31Hazardous operations 0600Z to 1300Z daily 29 thru 31 oct: a. in area bound by 47-36N 151-21E, 47-54N…
- HYDROPAC 3306/15 · Missiles2015-10-07 → 2015-10-17Hazardous operations 0600Z to 1300Z daily 12 thru 17 oct: a. in area bound by 47-36N 151-21E, 47-54N…
- HYDROPAC 3264/15 · Nav aids2015-10-02 → 2015-12-06Mys yelizavety light 54-25.2N 142-43.2E unlit
- HYDROPAC 3134/15 · Cable ops2015-09-21 → 2015-10-11Seismic survey in progress until 10 oct by M/V fa xian 6 towing twelve 6000 meter long cables in area bound…
- HYDROPAC 2863/15 · Exercises2015-08-29 → 2015-09-06Gunnery exercises 302200Z aug to 060900Z sep in area bound by 45-00-23N 147-43-22E, 44-56-01N 147-50-09E,…
- HYDROPAC 2828/15 · Exercises2015-08-27 → 2015-08-29Gunnery exercises 312200Z aug to 060900Z sep in area bound by 45-00-23N 147-43-22E, 44-56-01N 147-50-09E,…
- HYDROPAC 2812/15 · Exercises2015-08-26 → 2015-09-07Gunnery exercises 2200Z to 0900Z commencing daily 31 aug thru 06 sep in area bound by 44-53-25N 147-39-50E,…
- HYDROPAC 2662/15 · Cable ops2015-08-13 → 2015-09-16Seismic survey 15 aug thru 15 sep by M/V diabaz towing 1200 meter long cable in area bound by 51-20-35N…
- HYDROPAC 2642/15 · Surveys2015-08-12 → 2015-09-10Scientific mooring established until 09 sep in 51-19.49N 144-28.14E
- HYDROPAC 2617/15 · Cable ops2015-08-10 → 2015-09-11Seismic survey 14 aug thru 10 sep by M/V fa XIAN6 towing twelve 6000 meter long cables in area bound by…
- HYDROPAC 2522/15 · Incidents2015-07-31 → 2015-09-13Vessel nelma, four persons on board, unreported
- HYDROPAC 2291/15 · Cable ops2015-07-11 → 2015-11-13Cable laying 13 jul thru 30 nov by M/V cable innovator towing equipment along tracklines joining: a.…
- HYDROPAC 2242/15 · Towing2015-07-07 → 2015-08-07Geophysical operations in progress until 06 aug by M/V diabaz towing 1200 meter long cable in area bound by…
- HYDROPAC 2212/15 · Towing2015-07-03 → 2015-07-07Geophysical operations 07 jul thru 06 aug by M/V diabaz towing 1200 meter long cable in area bound by…
- HYDROPAC 2172/15 · Missiles2015-06-29 → 2015-07-09Hazardous operations 2300Z to 1000Z commencing daily 03 thru 08 jul in area bound by 45-41-54N 146-36-00E,…
- HYDROPAC 2037/15 · Cable ops2015-06-21 → 2015-08-11Seismic survey 25 jun thru 10 aug by M/V fa XIAN6 towing twelve 6000 meter long cables in area bound by…
- HYDROPAC 1992/15 · Nav aids2015-06-18 → 2015-06-30Lights unlit: 1. mys marii light 54-18.6N 142-15.8E
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.