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 281/19 · Missiles2019-11-10 → 2019-11-15Cancel this msg 150500Z nov 19
- HYDROARC 252/19 · Surveys2019-10-10 → 2020-10-21Scientific moorings established: a. BCE-19, in 71-40.37N 154-59.92W, at depth 105 meters, top float 40 meters
- HYDROARC 251/19 · Missiles2019-10-09 → 2019-10-18Hazardous operations, missile operations 0500Z to 1700Z daily 14 thru 18 oct in area bound by 81-21.6N…
- HYDROARC 219/19 · Missiles2019-09-19 → 2019-09-24Missile and gunnery operations 0500Z to 1900Z daily 21 thru 24 sep in area bound by 80-32.3N 039-36.0E,…
- HYDROARC 210/19 · Missiles2019-09-13 → 2019-09-20Missile and gunnery operations 0500Z to 1900Z daily 17 thru 20 sep in area bound by 80-32.3N 039-36.0E,…
- HYDROARC 179/19 · Missiles2019-08-21 → 2019-08-26Hazardous operations, rocket launching 232230Z to 240530Z, 242230Z to 250530Z and 260930Z to 261730Z aug in…
- HYDROARC 175/19 · Exercises2019-08-19 → 2019-08-26Hazardous operations 232230Z to 240530Z, 242230Z to 250530Z and 260930Z to 261730Z aug in areas bound by: a.…
- HYDROARC 163/19 · Surveys2019-08-06 → 2019-11-05Survey operations 08 aug until further notice by M/V geolog dimitriy nalivkin towing 8000 meter long cable…
- HYDROARC 109/19 · Missiles2019-06-28 → 2019-06-30Hazardous operations, rocket launching, 301400Z to 301800Z jun in area bound by 83-00N 099-00E, 83-00N…
- HYDROARC 95/19 · Missiles2019-06-11 → 2019-06-14Hazardous operations, rocket launching 141500Z to 141800Z jun in area bound by 83-00N 099-00E, 83-00N…
- HYDROARC 38/19 · Missiles2019-03-10 → 2019-03-22Hazardous operations, space debris 0158Z to 0315Z daily 15 mar thru 14 apr in area bound by 78-12N 165-48W,…
- HYDROARC 23/19 · Missiles2019-02-19 → 2019-02-22Hazardous operations, space debris 1645Z to 1800Z daily 21 thru 24 feb in area within 200 miles of 82-10N…
- HYDROARC 344/18 · Missiles2018-12-19 → 2018-12-25Hazardous operations, rocket launching 230230Z to 230430Z dec, alternate 250400Z to 250700Z dec in area…
- HYDROARC 321/18 · Exercises2018-11-26 → 2018-12-01Hazardous operations 0200Z to 0330Z daily 30 nov and 01 dec in area within 27 miles of 78-16N 163-55E
- HYDROARC 311/18 · Missiles2018-11-17 → 2018-11-21Hazardous operations, space debris 0151Z to 0308Z daily 21 nov thru 21 dec in area bound by 78-12N 165-48W,…
- HYDROARC 299/18 · Surveys2018-11-08 → 2019-04-05Scientific moorings established in: a. 71-40.35N 154-59.98W, top float 40 meters
- HYDROARC 298/18 · Surveys2018-11-08 → 2019-04-05Scientific moorings established in: a. 73-18.23N 160-47.02W, top float 48 meters
- HYDROARC 297/18 · Surveys2018-11-08 → 2019-04-05Scientific moorings established: a. BCE-18, 71-40.351N 154-59.975W, at depth 105 meters, top float 40 meters
- HYDROARC 287/18 · Missiles2018-11-02 → 2018-11-09Hazardous operations, space debris 0053Z to 0210Z daily 07 nov thru 07 dec in area bound by 81-33N 141-00W,…
- HYDROARC 258/18 · Missiles2018-10-05 → 2018-10-16Hazardous operations, rocket launching 0300Z to 1900Z daily 11 thru 16 oct in area bound by 82-47.4N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.