Arctic Ocean
IHO sea area 17 · -180° to 180° E, 71° to 90° N
- in force
- 1
- last 12 months
- 1
- archive messages
- 260
- categories
- 13
What the archive shows
260 messages are recorded since 1991-09-16 for the Arctic Ocean. The selection uses the IHO sea area; a message may describe an exercise, equipment outage or continuing operation as well as a hazard report.
Missiles accounts for 101 of 260 recorded messages (39%), 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 2024-12-17 08:58ZFour scientific moorings established in Beaufort and Chukchi Seas off Alaska at various positions and depths.
In force now · 1
Longest in force
By year
91
97
99
02
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
| Missiles | 101 | 39% |
| Surveys | 81 | 31% |
| Quakes | 27 | 10% |
| Exercises | 18 | 7% |
| Cable ops | 13 | 5% |
| Other | 6 | 2% |
| Icebergs | 3 | 1% |
| Nav aids | 3 | 1% |
| Restricted | 2 | 1% |
| Wrecks | 2 | 1% |
| Towing | 2 | 1% |
| Debris | 1 | 0% |
| Spills | 1 | 0% |
Archive · 259 cancelled
- HYDROARC 240/14 · Surveys2014-09-24 → 2015-10-14B. 71-44.01N 155-09.55W, top float 43 meters
- HYDROARC 238/14 · Cable ops2014-09-23 → 2014-11-16Seismic survey in progress until 15 nov by M/V zephyr towing 8500 meter long cable in area bound by 75-10N…
- HYDROARC 228/14 · Other2014-09-19 → 2014-10-02Geophysical operations in progress until further notice by M/V nikolay trubyatchinsky along trackline…
- HYDROARC 153/14 · Towing2014-07-30 → 2014-09-29Geophysical operations in progress until further notice by M/V akademik fedorov towing 600 meter long cable…
- HYDROARC 131/14 · Surveys2014-07-22 → 2019-04-05Chuckchi Sea
- HYDROARC 94/14 · Missiles2014-06-30 → 2014-07-05Hazardous operations 1200Z to 1400Z daily 03 thru 05 jul within 25 miles of 78-16N 163-55E
- HYDROARC 59/14 · Missiles2014-05-20 → 2014-05-26Hazardous operations 0500Z to 0600Z daily 23 thru 26 may within 31 miles of 78-16N 163-55E
- HYDROARC 47/14 · Missiles2014-05-04 → 2014-05-11Hazardous operations 0400Z to 1400Z daily 09 thru 11 may in area bound by 81-13.8N 089-50.4E, 81-41.4N…
- HYDROARC 45/14 · Missiles2014-05-02 → 2014-05-08Hazardous operations 0400Z to 1800Z daily 05 thru 08 may in area bound by 81-13.8N 089-50.4E, 81-41.4N…
- HYDROARC 291/13 · Missiles2013-12-20 → 2013-12-26Hazardous operations 0020Z to 0120Z daily 25 and 26 dec within 27 miles of 78-16N 163-55E
- HYDROARC 278/13 · Missiles2013-11-20 → 2013-11-23Space debris
- HYDROARC 258/13 · Surveys2013-10-25 → 2014-10-03Chukchi Sea
- HYDROARC 253/13 · Missiles2013-10-23 → 2013-10-31Hazardous operations 0300Z to 1400Z daily 28 thru 31 oct in area bound by 81-18.6N 089-46.2E, 81-36.0N…
- HYDROARC 244/13 · Cable ops2013-10-20 → 2013-10-22Seismic survey in progress until further notice by M/V zefir I towing 10000 meter long cable along trackline…
- HYDROARC 240/13 · Surveys2013-10-19 → 2013-10-19Beaufort Sea
- HYDROARC 239/13 · Cable ops2013-10-17 → 2013-10-19Seismic survey in progress until further notice by M/V zefir I towing 10000 meter long cable along trackline…
- HYDROARC 237/13 · Surveys2013-10-16 → 2013-10-27B. 72-36.91N 158-42.13W
- HYDROARC 230/13 · Cable ops2013-10-15 → 2013-10-17Seismic survey in progress until further notice by M/V zefir I towing 10000 meter long cable along trackline…
- HYDROARC 229/13 · Surveys2013-10-14 → 2014-12-21B. BOEM-3, 72-20.175N 157-26.893W, at depth 162 meters
- HYDROARC 218/13 · Missiles2013-10-10 → 2013-10-15Hazardous operations 150700Z to 151300Z, 160600Z to 161200Z, 170430Z to 171030Z and 180300Z to 180900Z oct…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.