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
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A
M
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Other hazards in the North Sea
Archive · 582 cancelled
- HYDROLANT 1757/152015-07-17 → 2015-08-13Survey operations in progress until further notice by M/V icebeam towing equipment in area bound by 51-58.0N…Southern North Sea · England-southeast Coast
- HYDROLANT 1670/152015-07-08 → 2015-07-15Underwater operations in progress until further notice by M/V kommandor vicinity of trackline joining…Southern North Sea
- HYDROLANT 1651/152015-07-07 → 2015-07-08Underwater operations in progress until further notice by M/V kommandor with submersible vicinity of…Southern North Sea
- HYDROLANT 1585/152015-06-28 → 2015-07-06Underwater operations in progress until further notice by M/V kommandor with submersible vicinity of…Southern North Sea · England-east Coast
- HYDROLANT 1523/152015-06-21 → 2015-06-28Underwater operations in progress until further notice by M/V kommandor with submersible vicinity of…Southern North Sea · England-east Coast
- HYDROLANT 558/152015-03-07 → 2015-03-11Underwater operations in progress until further notice by M/V atlantic explorer with submersible vicinity:…Southern North Sea
- HYDROLANT 555/152015-03-07 → 2015-05-06Underwater operations in progress until further notice by M/V constructor with submersible vicinity 53-09.6N…Southern North Sea
- HYDROLANT 343/152015-02-10 → 2015-02-15Underwater operations in progress until further notice by M/V protea with submersible in: a. 52-59.8N…Southern North Sea
- HYDROLANT 2759/142014-11-15 → 2014-11-16Underwater operations in progress until further notice by M/V cable one with submersible vicinity 53-17.0N…Southern North Sea · England-east Coast
- HYDROLANT 2469/142014-10-11 → 2014-10-31Underwater operations in progress until further notice by M/V stril explorer with submersible in area bound…England-east Coast
- HYDROLANT 2327/142014-09-26 → 2014-09-27Survey operations in progress until further notice by M/V geo prospector within one mile of 53-40.0N 000-54.5ESouthern North Sea · England-east Coast
- HYDROLANT 2315/142014-09-25 → 2014-10-01Underwater operations in pogress until further notice by M/V constructor with submersible vicinity 53-00.55N…Southern North Sea
- HYDROLANT 1752/142014-07-19 → 2014-07-23Underwater operations in progress until further notice by M/V rene descartes vicinity of trackline joining…Scotland-north Coast · Orkney Islands
- HYDROLANT 994/142014-04-11 → 2014-04-25Underwater operations in progress until further notice by M/V fugro galaxy in area bound by 53-42.5N…Southern North Sea
- HYDROLANT 3107/132013-12-03 → 2013-12-09Survey operations in progress until further notice by M/V geoholm with submersible along trackline joining…Southern North Sea
- HYDROLANT 1942/132013-08-08 → 2013-09-02Underwater operations in progress until further notice by M/V franklin in areas bound by: a. 57-30.5N…North Sea · Scotland-east Coast
- HYDROLANT 1911/132013-08-06 → 2013-08-08Geophysical survey in progress until further notice by M/V franklin in area bound by 57-30.9N 001-47.3W,…North Sea · Scotland-east Coast
- HYDROLANT 683/132013-03-18 → 2013-03-28Underwater operations in progress until further notice in 55-38.4N 001-36.7WEngland-northeast Coast
- HYDROLANT 2651/122012-11-09 → 2012-11-09Underwater operations in progress until further notice by M/V geoholm with submersible vicinity 51-51.4N…Southern North Sea
- HYDROLANT 2631/122012-11-07 → 2012-11-08Underwater operations in progress until further notice by M/V geoholm with submersible vicinity of trackline…England-southeast Coast
- HYDROLANT 2623/122012-11-06 → 2012-11-07Underwater operations in progress until further notice by M/V geoholm with submersible vicinity of trackline…Southern North Sea
- HYDROLANT 2589/122012-11-02 → 2012-11-05Underwater operations in progress until further notice by M/V reef despina with submersible vicinity 55-05N…England-east Coast
- HYDROLANT 2571/122012-11-01 → 2012-11-02Underwater operations in progress until further notice by M/V reef despina with submersible vicinity…England-east Coast
- HYDROLANT 2487/122012-10-24 → 2012-11-10Underwater operations in progress until further notice by M/V mpi adventure vicinity 55-08.77N 001-25.25WEngland-east Coast
- HYDROLANT 1427/122012-06-29 → 2012-07-09Underwater operations in progress until further notice by M/V highland eagle within 1000 meters of 56-46.9N…North Sea
- HYDROLANT 1277/122012-06-14 → 2012-06-16Underwater operations in progress until further notice by M/V highland eagle vicinity 54-40.3N 000-51.8ESouthern North Sea
- HYDROLANT 1243/122012-06-09 → 2012-06-12Underwater operations in progress until further notice by M/V highland eagle vicinity 54-34.6N 000-30.1ESouthern North Sea
- HYDROLANT 852/122012-04-18 → 2012-04-23Underwater operations in progress until further notice by M/V highland eagle in 56-33.58N 002-30.95ENorth Sea
- HYDROLANT 577/122012-03-11 → 2012-04-22Underwater operations in progress until further notice by M/V stril explorer within 1.5 miles of 56-11.4N…North Sea
- HYDROLANT 1714/112011-10-18 → 2011-10-22Salvage operations in progress until further notice vicinity 51-14.97N 001-28.19EEngland-southeast Coast
- HYDROLANT 559/112011-04-02 → 2011-04-03Underwater operations in progress until further notice by M/V discovery within: a. one mile of 51-51.9N…England-southeast Coast
- HYDROLANT 503/112011-03-25 → 2011-03-29Underwater operations in progress until further notice by M/V discovery within: a. one mile of 51-52.9N…England-southeast Coast
- HYDROLANT 469/112011-03-22 → 2011-09-20Salvage operations in progress until further notice in 52-45.9N 004-12.7ESouthern North Sea
- HYDROLANT 318/112011-02-23 → 2011-02-27Underwater operations in progress until further notice by M/V odyssey explorer within one mile of 56-13.7N…Western North Sea · Scotland-east Coast
- HYDROLANT 2520/102010-12-28 → 2011-01-09Underwater operations in progress until further notice by M/V seawell with submersible in 53-55.5N 000-37.5EEngland-east Coast
- HYDROLANT 2460/102010-12-19 → 2010-12-21Underwater operations in progress until further notice by M/V fugro searcher towing 300 meter long cable…North Sea
- HYDROLANT 1968/102010-10-17 → 2010-10-29Underwater operations in progress until further notice by M/V ocean discovery within 4.5 miles of 56-16N…Western North Sea · Scotland-east Coast
- HYDROLANT 1824/102010-09-26 → 2010-09-27Underwater operations in progress until further notice by M/V noordhoek singapore with submersible vicinity…Southern North Sea
- HYDROLANT 1808/102010-09-24 → 2010-09-25Underwater operations in progress until further notice by M/V noordhoek singapore with submersible vicinity…England-southeast Coast
- HYDROLANT 1805/102010-09-24 → 2010-09-24Underwater operations in progress until further notice by M/V noordhoek singapore with submersible vicinity…England-southeast Coast
- HYDROLANT 1768/102010-09-18 → 2010-09-29Survey operations in progress until further notice by M/V icebeam towing equipment along trackline joining…Dover Strait
- HYDROLANT 1685/102010-09-07 → 2010-09-13Underwater operations in progress until further notice by M/V icebeam along trackline between 51-19.5N…Dover Strait · Sandettie Bank
- HYDROLANT 1673/102010-09-04 → 2010-09-06Underwater operations in progress until further notice by M/V icebeam in: a. 51-19.6N 002-20.8EDover Strait
- HYDROLANT 1595/102010-08-24 → 2010-08-28Underwater operations in progress until further notice by M/V ocean discovery within 4.5 miles of 56-16N…Scotland-east Coast
- HYDROLANT 1526/102010-08-11 → 2010-08-16Underwater operations in progress until further notice by M/V ocean discovery within 4.5 miles of 56-16N…Scotland-east Coast
- HYDROLANT 1512/102010-08-08 → 2010-09-04Survey operations in progress until further notice by M/V icebeam towing 300 meter long cable along…Dover Strait
- HYDROLANT 1473/102010-08-02 → 2010-11-27Survey operations in progress until further notice by M/V fugro discovery in areas bound by: a. 56-51.07N…North Sea
- HYDROLANT 1395/102010-07-21 → 2010-07-25Underwater operations in progress until further notice by M/V l espoir within 4.5 miles of 56-16N 002-15WScotland-east Coast
- HYDROLANT 1332/102010-07-14 → 2010-07-21Survey operations in progress until further notice by M/V fugro discovery towing equipment vicinity 53-02.1N…Southern North Sea
- HYDROLANT 392/102010-03-03 → 2010-11-16Salvage operations in progress until further notice in 52-45.9N 004-12.7ESouthern North Sea
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.