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 145/12 · Surveys2012-08-27 → 2012-11-180.2 mile berth requested
- HYDROARC 138/12 · Surveys2012-08-22 → 2013-11-01B. 72-09.757N 159-07.394W, at depth 26 meters
- HYDROARC 131/12 · Surveys2012-08-18 → 2013-12-01B. 72-31.517N 164-05.944W at 50 meters
- HYDROARC 93/12 · Missiles2012-07-26 → 2012-07-29Hazardous operations 0115Z to 0215Z daily 28 and 29 jul within 27 miles of 78-16N 163-55E
- HYDROARC 75/12 · Missiles2012-07-10 → 2012-07-14Hazardous operations 0230Z to 0400Z daily 13 and 14 jul within 27 miles of 78-16N 163-55E
- HYDROARC 10/12 · Surveys2012-02-28 → 2012-10-01B. 71-40.353N 154-59.742W
- HYDROARC 203/11 · Surveys2011-10-11 → 2012-10-02Nga chart 16003 (16TH ed)
- HYDROARC 201/11 · Surveys2011-10-09 → 2012-10-02Nga chart 16005 (10TH ed)
- HYDROARC 189/11 · Missiles2011-09-29 → 2011-10-05Hazardous operations 0800Z to 1600Z daily 01 thru 05 oct in areas bound by: a. 69-27.0N 034-10.0E, 69-33.0N…
- HYDROARC 187/11 · Missiles2011-09-24 → 2011-09-30Hazardous operations 280900Z to 281600, 291200Z to 291900Z and 301000Z to 301700Z sep in areas bound by: a.…
- HYDROARC 128/11 · Surveys2011-08-14 → 2012-09-23Nga chart 803 (1ST ed)
- HYDROARC 111/11 · Missiles2011-07-23 → 2011-07-31Hazardous operations 0800Z to 1700Z daily 27 thru 31 jul in areas bound by: a. 69-27.0N 034-10.0E, 69-33.0N…
- HYDROARC 101/11 · Missiles2011-07-15 → 2011-07-20Hazardous operations 0800Z to 1700Z daily 18 thru 21 jul in areas bound by a. 69-27.0N 034-10.0E, 69-33.0N…
- HYDROARC 94/11 · Other2011-07-07 → 2011-10-10Geophysical operations 07 jul thru 15 oct by M/V academic fyodorov in area bound by 83-00N 034-00E, 89-00N…
- HYDROARC 91/11 · Missiles2011-07-06 → 2011-07-12Hazardous operations 0800Z to 1700Z daily 09, 11 and 12 jul in areas bound by: a. 70-41.0N 034-16.0E,…
- HYDROARC 83/11 · Missiles2011-06-30 → 2011-07-06Hazardous operations 0800Z to 1700Z daily 04 thru 08 jul in areas bound by: a. 69-27.0N 034-10.0E, 69-33.0N…
- HYDROARC 78/11 · Missiles2011-06-24 → 2011-06-30Hazardous operations 0600Z to 1700Z daily 28 jun thru 02 jul in areas bound by: a. 65-12.6N 036-37.0E,…
- HYDROARC 66/11 · Missiles2011-05-19 → 2011-05-25Hazardous operations 230700Z to 231400Z and 0800Z to 1500Z daily 24 thru 26 may in areas bound by: a.…
- HYDROARC 64/11 · Missiles2011-05-17 → 2011-05-22Hazardous operations 201000Z to 201700Z and 0900Z to 1600Z daily 21 and 22 may in areas bound by: a.…
- HYDROARC 52/11 · Missiles2011-04-23 → 2011-04-30Hazardous operations 0800Z to 1500Z daily 28 thru 30 apr in areas bound by: a. 70-40.0N 034-13.0E, 71-36.0N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.