Survey operations in the Norwegian Sea
Hydrographic and scientific survey vessels, often towing long arrays.
- in force
- 2
- last 12 months
- 2
- vs previous 12 (0)
- —
- since 2001
- 105
Coverage note: the NGA archive ends 2024-05 and live collection began 2026-08-17. Warnings issued in between are here only if they were still in force when collection started, so 2024–2026 are under-counted.
In force now · 2
- NAVAREA 19 100/26in force2026-08-09Rig list for Norwegian Sea north of 65N, east of 5W lists four rigs with 500 metre safety zones at 091830 UTC August 26.Riglist
- HYDROLANT 1297/26in force2026-07-03Survey operations are in progress by vessel Ramform Atlas towing long cables in the North Sea off Norway; a three-mile berth is requested.North Sea · Norway
Longest in force
- HYDROLANT 1297/26in force2026-07-03 · 49 dSurvey operations are in progress by vessel Ramform Atlas towing long cables in the North Sea off Norway; a three-mile berth is requested.North Sea · Norway
- NAVAREA 19 100/26in force2026-08-09 · 12 dRig list for Norwegian Sea north of 65N, east of 5W lists four rigs with 500 metre safety zones at 091830 UTC August 26.Riglist
By month (all years)
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Other hazards in the Norwegian Sea
Archive · 103 cancelled
- HYDROLANT 1175/172017-04-12 → 2017-05-15Survey operations in progress until further notice by M/V polar empress and M/V polar duchess each towing 12…Norwegian Sea · Norway
- HYDROLANT 2232/082008-12-22 → 2009-01-04Underwater operations in progress until further notice vicinity of trackline joining 60-51N 004-38E, 61-34N…
- HYDROLANT 1294/012001-05-02 → 2001-05-03Underwater operations in progress until further notice by M/V goosander vicinity of trackline between 79-35N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts and your national MSI service.