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 1603/202020-05-12 → 2020-07-01Survey operations in progress until further notice by M/V ramform vanguard towing 14 5.4 mile long cables in…North Sea
- HYDROLANT 1437/202020-04-27 → 2020-06-17Survey operations in progress until further notice by M/V sw amundsen towing nine 3500 meter long cables in…North Sea · Norway
- HYDROLANT 1357/202020-04-17 → 2020-04-19Survey operations in progress until further notice by M/V fugro discovery in vicinity of trackline joining…North Sea · England
- HYDROLANT 1037/202020-03-19 → 2020-04-07Survey operations in progress until further notice by M/V fugro discovery in vicinity of trackline joining…North Sea · England
- HYDROLANT 775/202020-03-01 → 2020-03-19Survey operations in progress until further notice by M/V fugro gauss in vicinity of trackline joining…North Sea · England
- HYDROLANT 738/202020-02-28 → 2020-03-01Survey operations in progress until further notice by M/V furgo gauss in vicinity of trackline joining…North Sea · England
- HYDROLANT 3118/192019-10-13 → 2019-10-18Survey operations in progress until futher notice by M/V sw amundsen towing seven 4000 meter long cables in…North Sea · Scotland
- HYDROLANT 3088/192019-10-11 → 2019-10-27Survey operations in progress until 26 oct by M/V sw tasman and M/V sw cook in area bound by 59-31N 001-42E,…North Sea
- HYDROLANT 3085/192019-10-11 → 2019-10-19Survey operations in progress until 24 oct by M/V sanco sword and M/V havila aurora towing 300 meter long…North Sea
- HYDROLANT 2938/192019-09-26 → 2019-10-05Survey operations in progress until further notice by M/V sw tasman and M/V sw emerald in area bound by…North Sea
- HYDROLANT 2937/192019-09-26 → 2019-10-13Survey operations in progress until futher notice by M/V sw amundsen and M/V sw cook towing eight 4000 meter…North Sea
- HYDROLANT 2865/192019-09-19 → 2019-10-29Survey operations in progress until further notice by M/V ramform vanguard towing 12 5.4 mile long cables in…North Sea
- HYDROLANT 2774/192019-09-12 → 2019-09-26Survey operations in progress until further notice by M/V sw tasman, M/V sw cook and M/V sw emerald in area…North Sea
- HYDROLANT 2773/192019-09-12 → 2019-10-16Survey operations in progress until further notice by M/V veritas viking and M/V artemis athene in area…North Sea · Shetland Islands
- HYDROLANT 2766/192019-09-11 → 2019-09-12Survey operations in progress until further notice by M/V sw tasman, M/V sw cook and M/V sw emerald in area…North Sea
- HYDROLANT 2638/192019-08-30 → 2019-09-11Survey operations in progress until 300700Z sep by M/V sw tasman and M/V sw cook in area bound by 56-20N…North Sea
- HYDROLANT 2605/192019-08-27 → 2019-09-26Survey operations in progress until further notice by M/V sw amundsen towing eight 4000 meter long cables in…North Sea
- HYDROLANT 2545/192019-08-20 → 2019-09-12Survey operations in progress until further notice by M/V veritas viking and M/V artemis athene in area…North Sea · Shetland Islands
- HYDROLANT 2453/192019-08-12 → 2019-08-29Survey operations in progress until 260200Z sep by M/V sw tasman and M/V sw cook area bound by 59-25N…North Sea
- HYDROLANT 2436/192019-08-09 → 2019-08-20Survey operations in progress until further notice by M/V veritas viking and M/V artemis athene in area…North Sea · Shetland Islands
- HYDROLANT 2407/192019-08-06 → 2019-08-30Underwater operations until further notice by M/V deep helder in vicinity of trackline joining 51-09.0N…North Sea · France
- HYDROLANT 2394/192019-08-05 → 2019-08-09Survey operations in progress until further notice by M/V veritas viking in area bound by 60-33.8N…North Sea
- HYDROLANT 2386/192019-08-03 → 2019-08-23Survey operations in progress until further notice by M/V polar empress in area bound by 55-15.6N 000-26.6W,…North Sea · England
- HYDROLANT 2260/192019-07-25 → 2019-08-05Survey operations in progress until further notice by M/V artemis athene and S/V veritas viking in area…North Sea
- HYDROLANT 2211/192019-07-20 → 2019-08-22Survey operations in progress until 21 aug by M/V amazon conqueror towing 15 5000 meter long cables in area…North Sea
- HYDROLANT 2004/192019-07-03 → 2019-10-08Survey operations in progress until 01 nov by M/V sanco sword towing 300 meter long cables in area bound by…North Sea
- HYDROLANT 1673/192019-05-31 → 2019-06-26Underwater operations in progress until further notice by M/V fpv flintstone in vicinity of trackline…North Sea · England
- HYDROLANT 1550/192019-05-23 → 2019-07-12Survey operations in progress until further notice by M/V akademik primakov towing ten 7000 meter long…North Sea · England
- HYDROLANT 1423/192019-05-09 → 2019-05-09Survey operations in progress until further notice by M/V maxlimer along trackline joining 51-18.9N…North Sea · Belgium To England
- HYDROLANT 1349/192019-05-01 → 2019-05-31Underwater operations in progress until further notice by M/V fpv flintstone in vicinity of trackline…North Sea · England
- HYDROLANT 101/192019-01-11 → 2019-01-16Underwater operations in progress until further notice by M/V maersk connector in vicinity of trackline…North Sea · England
- HYDROLANT 3475/182018-11-09 → 2018-12-02Survey operations in progress until further notice by M/V geo caribbean towing ten 8000 meter long cables in…North Sea · Norway
- HYDROLANT 3426/182018-11-04 → 2018-11-19Survey operations in progress until further notice by M/V harrier explorer towing 8000 meter long cable in…North Sea · England
- HYDROLANT 3418/182018-11-02 → 2018-11-07Underwater operations in progress until further notice by M/V sovereign in vicinity of 52-21.1N 002-49.2ENorth Sea · England
- HYDROLANT 3381/182018-10-31 → 2018-11-01Underwater operations in progress until further notice by M/V stornes in vicinity of trackline joining…North Sea
- HYDROLANT 3213/182018-10-12 → 2018-10-13Underwater operations in progress until further notice by M/V global symphony in vicinity 51-19.6N 001-54.6ENorth Sea · England-southwest Coast
- HYDROLANT 3108/182018-10-02 → 2018-10-26Survey operations in progress until further notice by M/V ramform atlas towing 12 five mile long cables in…North Sea
- HYDROLANT 3001/182018-09-22 → 2018-10-20Underwater operations in progress until further notice by M/V sovereign in vicinity of 51-54.7N 002-22.5ENorth Sea · England
- HYDROLANT 2982/182018-09-21 → 2018-10-14Survey operations in progress until further notice by M/V sanco swift towing 12 9000 meter long cables in…North Sea · Scotland
- HYDROLANT 2973/182018-09-20 → 2018-11-01Underwater operations in progress until further notice by M/V ocean vantage in area bound by 56-41N 001-57W,…North Sea · Scotland
- HYDROLANT 2899/182018-09-13 → 2018-09-20Underwater operations 140001Z to 200001Z sep in area within one mile of 56-09.8N 002-35.1WNorth Sea · Scotland
- HYDROLANT 2566/182018-08-11 → 2018-09-21Survey operations in progress until further notice by M/V sanco swift towing 12 9000 meter long cables in…North Sea · Scotland
- HYDROLANT 2545/182018-08-08 → 2018-08-11Underwater operations in progress until further notice by M/V skandi constructor with submersible in…North Sea · England-southwest Coast
- HYDROLANT 2541/182018-08-08 → 2018-09-20Underwater operations in progress until further notice by M/V ocean vantage in area bound by 56-41N 001-57W,…North Sea · Scotland
- HYDROLANT 2449/182018-07-31 → 2018-08-01Underwater operations in progress until further notice by M/V skandi constructor with submersible in…North Sea · England
- HYDROLANT 2307/182018-07-15 → 2018-07-18Underwater operations in progress until further notice by M/V skandi constructor in vicinity 51-19.6N…North Sea · England
- HYDROLANT 2109/182018-06-29 → 2018-07-19Survey operations in progress until further notice by M/V sanco swift towing 12 9000 meter long cables in…North Sea · Scotland
- HYDROLANT 1865/182018-06-11 → 2018-06-14Underwater operations in progress until further notice by M/V maersk connector in 51-19.3N 001-54.4ENorth Sea · England
- HYDROLANT 1814/182018-06-08 → 2018-06-30Survey operations in progress until further notice by M/V polar duchess towing ten 7000 meter long cables in…North Sea
- HYDROLANT 1782/182018-06-06 → 2018-06-20Underwater operations in progress until further notice by M/V havila phoenix in vicinity of trackline…North Sea · France
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.