Norwegian Sea
IHO sea area 6 · -14° to 26° E, 61° to 77° N
- in force
- 1
- last 12 months
- 13
- archive messages
- 497
- categories
- 15
What the archive shows
497 messages are recorded since 1999-04-21 for the Norwegian Sea. The selection uses the IHO sea area; a message may describe an exercise, equipment outage or continuing operation as well as a hazard report.
Cable ops accounts for 134 of 497 recorded messages (27%), 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 2026-08-28 09:28ZSurvey operations in Norwegian Sea by Amazon Conqueror towing twelve 10,000-meter cables, seven mile berth requested.
In force now · 1
Longest in force
By year
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
| Cable ops | 134 | 27% |
| Surveys | 109 | 22% |
| Missiles | 85 | 17% |
| Exercises | 62 | 12% |
| Nav aids | 31 | 6% |
| Quakes | 17 | 3% |
| Ordnance | 13 | 3% |
| Debris | 12 | 2% |
| Other | 12 | 2% |
| Containers | 9 | 2% |
| Incidents | 6 | 1% |
| Restricted | 4 | 1% |
| Mines | 1 | 0% |
| Derelicts | 1 | 0% |
| Icebergs | 1 | 0% |
Archive · 496 cancelled
- HYDROARC 54/19 · Missiles2019-04-09 → 2019-04-14Hazardous operations, rocket launching 0300Z to 1900Z daily 11 thru 14 apr in area bound by 69-30N 008-50E,…
- HYDROARC 3/19 · Missiles2019-01-06 → 2019-01-13Hazardous operations, rocket launching 0700Z to 1200Z daily 10 thru 17 jan 19 in areas bound by: a.…
- HYDROARC 348/18 · Missiles2018-12-30 → 2019-01-07Hazardous operations, rocket launcing 0700 to 1200Z daily 02 thru 07 jan 19: a. 69-44N 016-10E, 69-23N…
- HYDROARC 337/18 · Missiles2018-12-10 → 2018-12-19Hazardous operations, rocket launching 0700Z to 1200Z daily 10 thru 19 dec: a. in area bound by 69-17.6N…
- HYDROARC 332/18 · Missiles2018-12-06 → 2018-12-07Hazardous operations, rocket launching 0700Z to 1200Z daily 04 thru 19 dec: a. in area bound by 69-17.60N…
- HYDROARC 329/18 · Missiles2018-12-01 → 2018-12-06Hazardous operations, rocket launching 0700Z to 1200Z daily 04 thru 19 dec in areas bound by: a. 69-17.60N…
- HYDROARC 326/18 · Missiles2018-11-30 → 2018-12-01Hazardous operations, rocket launching 0700Z to 1200Z daily 04 thru 19 dec in areas: a. bound by 69-17.6N…
- HYDROARC 309/18 · Missiles2018-11-16 → 2018-11-22Missile operations 0500Z to 1700Z daily 20 thru 22 nov in area bound by 68-49.5N 009-30.0E, 69-09.5N…
- HYDROARC 232/18 · Exercises2018-09-12 → 2018-09-25Hazardous operations 0800Z to 1600Z daily 17 thru 20 and 24 thru 28 sep in area bound by 69-16N 015-32E,…
- HYDROARC 231/18 · Missiles2018-09-12 → 2018-09-28Hazardous operations, rocket launching 0800Z to 1600Z daily 17 sep thru 03 oct: a. in area within 36 miles…
- HYDROLANT 2856/18 · Surveys2018-09-08 → 2018-09-18Survey operations in progress until 30 sep by M/V polarcus adira towing 12 9000 meter long cables in area…
- HYDROARC 220/18 · Surveys2018-09-04 → 2018-09-22Survey operations 06 sep until further notice by M/V harrier explorer towing 6.5 mile long cable in area…
- USGS-US1000G4RV · Quakes2018-08-07 → 2018-08-10Earthquake magnitude 5.7 (mww) in 74.646N 008.455E, depth 10 km at 071357Z aug 18
- HYDROLANT 2468/18 · Surveys2018-07-31 → 2018-08-28Survey operations in progress until 01 sep by M/V polarcus alima towing 12 9000 meter long cables in area…
- HYDROLANT 2467/18 · Surveys2018-07-31 → 2018-09-07Survey operations in progress until further notice by M/V polarcus adira towing 12 9000 meter long cables in…
- HYDROLANT 2215/18 · Surveys2018-07-08 → 2018-07-31Survey operations in progress until further notice by M/V polarcus adira and M/V polarcus alima towing 12…
- HYDROLANT 2189/18 · Surveys2018-07-06 → 2018-07-07Survey operations in progress until 110100Z aug by M/V polarcus alima towing 12 9000 meter long cables in…
- HYDROLANT 2163/18 · Surveys2018-07-04 → 2018-10-20Survey operations in progress until further notice by M/V polar duchess towing 12 8700 meter long cables in…
- HYDROARC 142/18 · Surveys2018-07-03 → 2018-09-18Survey operations in progress until further notice by M/V ramform atlas towing 16 six mile long cables in…
- HYDROARC 132/18 · Exercises2018-06-22 → 2018-07-07Hazardous operations 25 jun thru 06 jul in area bound by 67-25N 006-25E, 67-25N 012-40E, 69-20N 015-05E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.