Survey operations in the North Sea
Hydrographic and scientific survey vessels, often towing long arrays.
- in force
- 1
- last 12 months
- 3
- vs previous 12 (0)
- —
- since 1997
- 583
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 · 1
Longest in force
By month (all years)
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F
M
A
M
J
J
A
S
O
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Other hazards in the North Sea
Archive · 582 cancelled
- HYDROLANT 1357/172017-04-29 → 2017-04-29Underwater operations in progress until further notice by barge taklift 4 in 53-05.0N 002-32.7ESouthern North Sea
- HYDROLANT 1332/172017-04-27 → 2017-06-11Survey operations in progress until further notice by M/V wg amundsen towing 12 6000 meter long cables in…North Sea · Norway
- HYDROLANT 1256/172017-04-20 → 2017-04-21Underwater operations in progress until further notice by barge taklift 4 in 53-05.0N 002-32.7ESouthern North Sea
- HYDROLANT 939/172017-03-23 → 2017-04-01Underwater operations in progress until further notice by M/V havila phoenix in vicinity of trackline…North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 915/172017-03-21 → 2017-03-23Underwater operations in progress until further notice by M/V havila phoenix in vicinity of trackline…North Sea · England-southeast Coast
- HYDROLANT 746/172017-03-07 → 2017-03-07Underwater operations 070700Z to 071800Z mar in area bound by 51-19.3N 002-06.1E, 51-19.4N 002-11.4E,…North Sea
- HYDROLANT 630/172017-02-24 → 2017-03-21Underwater operations in progress until further notice by M/V havila phoenix in vicinity of trackline…North Sea · England-southeast Coast
- HYDROLANT 526/172017-02-15 → 2017-04-18Underwater operations in progress until further notice by M/V havila phoenix with submersible in vicinity…North Sea
- HYDROLANT 489/172017-02-12 → 2017-02-15Underwater operations in progress until further notice by M/V havila phoenix with submersible in vicinity…North Sea
- HYDROLANT 448/172017-02-09 → 2017-02-12Underwater operations in progress until further notice by M/V havila phoenix with submersible in vicinity…North Sea
- HYDROLANT 364/172017-02-03 → 2017-02-08Underwater operations in progress until further notice by M/V havila phoenix with submersible in vicinity…North Sea
- HYDROLANT 358/172017-02-02 → 2017-02-03Underwater operations in progress until further notice by M/V havila phoenix with submersible in vicinity…North Sea
- HYDROLANT 354/172017-02-02 → 2017-02-02Underwater operations in progress until further notice by M/V havila phoenix with submersible in vicinity…North Sea · Dover Strait
- HYDROLANT 291/172017-01-27 → 2017-02-02Underwater operations in progress until further notice by M/V havila phoenix with submersible in vicinity…North Sea
- HYDROLANT 265/172017-01-25 → 2017-01-30Underwater operations 26 thru 31 jan by M/V maersk connector with submersible in area bound by 55-37.6N…North Sea
- HYDROLANT 258/172017-01-25 → 2017-01-25Underwater operations in progress until 30 jan by M/V maersk connector with submersible in area bound by…North Sea · England-northeast Coast
- HYDROLANT 191/172017-01-19 → 2017-01-24Underwater operations in progress until further notice by M/V havila phoenix with submersible in vicinity of…Southern North Sea
- HYDROLANT 164/172017-01-17 → 2017-01-19Underwater operations in progress until further notice by M/V havila phoenix with submersible in vicinity of…Southern North Sea
- HYDROLANT 3326/162016-12-09 → 2016-12-14Survey operations in progress until further notice by M/V stril explorer in area bound by 57-27.4N…North Sea · Scotland-east Coast
- HYDROLANT 3297/162016-12-07 → 2016-12-12Survey operations in progress until further notice by M/V geo ocean II in area bound by 53-00.0N 001-34.0E,…North Sea · England-east Coast
- HYDROLANT 2330/162016-09-08 → 2016-09-27Survey operations in progress until further notice by M/V titan discovery vicinity of trackline joining…Dover Strait · England-southeast Coast
- HYDROLANT 1995/162016-08-07 → 2016-08-30Survey operations in progress until further notice by M/V titan discovery vicinity of trackline joining…Dover Strait · England-southeast Coast
- HYDROLANT 1795/162016-07-16 → 2016-08-30Underwater operations in progress until further notice by M/V trya vicinity 51-21.38N 001-33.68ESouthern North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 1738/162016-07-11 → 2016-07-16Underwater operations in progress until further notice by M/V ile de aix and M/V trya vicinity 51-21.38N…Southern North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 1725/162016-07-08 → 2016-08-15Survey operations in progress until further notice by M/V bibby tethra towing equipment in area bound by…Southern North Sea
- HYDROLANT 1721/162016-07-08 → 2016-07-11Underwater operations in progress until further notice by M/V trya vicinity 51-21.38N 001-33.68ESouthern North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 1599/162016-06-25 → 2016-06-25Survey operations in progress until further notice by M/V ivero vicinity of trackline between 51-22.2N…Southern North Sea · Belgium
- HYDROLANT 1594/162016-06-24 → 2016-06-24Survey operations in progress until further notice by M/V ivero vicinity of trackline between 51-22.2N…Southern North Sea · Belgium
- HYDROLANT 1556/162016-06-21 → 2016-06-22Underwater operations in progress until further notice by M/V deep helder vicinity of trackline between…Southern North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 1518/162016-06-17 → 2016-06-18Survey operations in progress until further notice by M/V ivero vicinity of trackline between 51-19N 002-16E…Southern North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 1515/162016-06-17 → 2016-06-19Underwater operations in progress until further notice by M/V titan discovery vicinity of trackline between…Dover Strait · England-southeast Coast
- HYDROLANT 1498/162016-06-16 → 2016-06-21Underwater operations in progress until further notice by M/V deep helder vicinity of trackline between…Southern North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 1475/162016-06-14 → 2016-06-17Survey operations in progress until further notice by M/V ivero vicinity of trackline between 51-20N 001-42E…Southern North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 1434/162016-06-10 → 2016-06-11Survey operations in progress until further notice by M/V ivero vicinity of trackline between 51-20N 002-00E…Southern North Sea
- HYDROLANT 1413/162016-06-09 → 2016-06-10Underwater operations in progress until further notice by M/V deep helder vicinity of trackline between…Southern North Sea
- HYDROLANT 1403/162016-06-08 → 2016-06-10Survey operations in progress until further notice by M/V ivero vicinity of trackline between 51-20N 001-40E…Southern North Sea · England-southeast Coast
- HYDROLANT 1398/162016-06-07 → 2016-06-08Survey operations in progress until further notice by M/V ivero vicinity of trackline between 51-19N 001-50E…Southern North Sea · England-southeast Coast
- HYDROLANT 1394/162016-06-07 → 2016-06-10Underwater operations in progress until 100900Z jun by M/V deep helder vicinity of trackline between 51-19N…Southern North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 1392/162016-06-07 → 2016-06-07Survey operations in progress until further notice by M/V ivero vicinity of trackline between 51-19N 001-35E…Southern North Sea · England-southeast Coast
- HYDROLANT 1356/162016-06-03 → 2016-06-07Survey operations in progress until further notice by M/V ivero vicinity of trackline between 51-19.8N…Southern North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 1291/162016-05-29 → 2016-06-17Underwater operations in progress until further notice by M/V meriel d vicinity of trackline between…Dover Strait · England-southeast Coast
- HYDROLANT 1247/162016-05-26 → 2016-05-28Underwater operations in progress until further notice by M/V ivero vicinity of trackline between 51-18.8N…Southern North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 1221/162016-05-23 → 2016-05-24Survey operations in progress until further notice by M/V ivero vicinity of trackline between 51-18.8N…Southern North Sea · Dover Strait · England-southeast Coast
- HYDROLANT 1212/162016-05-22 → 2016-05-23Underwater operations in progress until 290900Z may by M/V ivero vicinity of trackline between 51-20N…Southern North Sea · England-southeast Coast
- HYDROLANT 916/162016-04-16 → 2016-05-11Survey operations in progress until further notice by M/V franklin vicinity of trackline joining 57-40.7N…North Sea · Scotland-northeast Coast
- HYDROLANT 607/162016-03-13 → 2016-04-09Underwater operations in progress until further notice by barge taklift 4 in 53-00.5N 002-40.0ESouthern North Sea
- HYDROLANT 2592/152015-10-17 → 2015-10-20Underwater operations in progress until further notice by barge taklift 4 in 53-00.5N 002-40.0ESouthern North Sea
- HYDROLANT 2310/152015-09-17 → 2015-09-17Underwater operations in progress until further notice by M/V island vanguard in 56-32.4N 000-58.3ENorth Sea
- HYDROLANT 2072/152015-08-23 → 2015-08-25Underwater operations in progress until further notice by M/V edt protea with submersible in: a. 53-00.9N…Southern North Sea
- HYDROLANT 1780/152015-07-19 → 2015-07-21Underwater operations in progress until further notice by M/V kommandor with submersible vicinity of…Southern North Sea · England-southeast Coast
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.