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% |
| Spills | 1 | 0% |
| Debris | 1 | 0% |
Archive · 259 cancelled
- HYDROARC 224/16 · Missiles2016-09-09 → 2016-09-12Space debris
- HYDROARC 222/16 · Surveys2016-09-08 → 2017-09-25Scientific moorings established in: a. 72-28.34N 155-24.39W, top float 62 meters
- HYDROARC 220/16 · Surveys2016-09-08 → 2017-09-25Scientific moorings established in: a. 71-40.37N 155-00.05W, top float 40 meters
- HYDROARC 212/16 · Surveys2016-09-05 → 2016-09-08Scientific moorings established in: a. 71-40.0N 155-00.0W, top float 40 meters
- HYDROARC 205/16 · Surveys2016-09-04 → 2019-04-05Scientific mooring TU-1 76-00.00N 160-10.00W removed
- HYDROARC 197/16 · Cable ops2016-08-30 → 2016-10-11Seismic survey 01 sep until further notice by M/V nikolay trubyatchinsky towing 8100 meter long cable in…
- HYDROARC 155/16 · Surveys2016-08-04 → 2019-04-05Sub-surface scientific moorings established in: a. 71-36.007N 161-30.011W, at depth 48 meters
- HYDROARC 416/15 · Missiles2015-12-09 → 2015-12-13Hazardous operations 0400Z to 1330Z daily 11 thru 13 dec in area bound by 82-33.0N 086-55.8E, 82-38.4N…
- HYDROARC 377/15 · Missiles2015-10-25 → 2015-10-31Hazardous operations 0500Z to 1500Z daily 29 thru 31 oct in area bound by 82-38.4N 085-53.4E, 83-14.4N…
- HYDROARC 363/15 · Surveys2015-10-14 → 2016-09-08B. 71-44.02N 155-09.50W, top float 43 meters
- HYDROARC 331/15 · Cable ops2015-09-29 → 2015-10-18Seismic survey 02 thru 17 oct by M/V nikolay trubyatchinsky towing 8100 meter long cable along tracklines…
- HYDROARC 303/15 · Missiles2015-09-22 → 2015-09-24Space debris
- HYDROARC 227/15 · Cable ops2015-08-11 → 2016-02-21Seismic survey 15 aug until further notice by M/V geo arctic towing 8500 meter long cable in area bound by…
- HYDROARC 46/15 · Missiles2015-03-27 → 2015-04-01Hazardous operations 1340Z to 1425Z daily 31 mar to 01 apr within 27 miles of 78-16N 163-55E
- HYDROARC 26/15 · Missiles2015-02-27 → 2015-03-04Hazardous operations 1640Z to 1720Z daily 03 and 04 mar within 27 miles of 78-16N 163-55E
- HYDROARC 5/15 · Missiles2015-01-10 → 2015-02-10Hazardous operations 0200Z to 1500Z daily 13 jan thru 10 feb within 169 miles of 73-23N 143-23W
- HYDROARC 335/14 · Missiles2014-11-02 → 2014-11-07Hazardous operations 0200Z to 1200Z daily 05 thru 07 nov in area bound by 81-18.6N 089-46.2E, 81-36.0N…
- HYDROARC 289/14 · Towing2014-10-09 → 2014-10-27Geophysical operations in progress until further notice by M/V nikolay trubyatchinsky towing 8100 meter long…
- HYDROARC 269/14 · Surveys2014-10-01 → 2018-12-04Scientific mooring established vicinity 72-48.01N 158-24.76W
- HYDROARC 268/14 · Surveys2014-10-01 → 2018-12-04Scientific mooring established vicinity 72-36.91N 158-42.13W
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.