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

  1. HYDROLANT 1496/26in force2026-08-03
    Survey operations are underway in the North Sea near Norway by the vessel Ramform Hyperion towing ten 2740-meter cables, requesting a three-mile berth.
    North Sea · Norway

Longest in force

  1. HYDROLANT 1496/26in force2026-08-03 · 19 d
    Survey operations are underway in the North Sea near Norway by the vessel Ramform Hyperion towing ten 2740-meter cables, requesting a three-mile berth.
    North Sea · Norway

By year

97
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
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

Other hazards in the North Sea

Archive · 582 cancelled

  1. HYDROLANT 3681/002000-11-02 → 2000-11-04
    Underwater operations in progress until further notice by M/V ace nature vicinity 55-15N 000-59E
  2. HYDROLANT 3667/002000-11-01 → 2000-11-01
    Underwater operations in progress until further notice by M/V ace nature vicinity of trackline between…
  3. HYDROLANT 3661/002000-10-31 → 2000-11-01
    Underwater operations in progress until further notice by M/V ace nature vicinity of trackline between…
  4. HYDROLANT 3483/002000-10-12 → 2000-10-19
    Underwater operations in progress until further notice by M/V nordica vicinity 54-32N 000-10W
  5. HYDROLANT 3422/002000-10-06 → 2000-10-06
    Underwater operations in progress until further notice by M/V ace nature with submersible in 52-26.5N…
  6. HYDROLANT 3413/002000-10-05 → 2000-10-06
    Underwater operations in progress until further notice by M/V ace nature with submersible in 52-27.6N…
  7. HYDROLANT 3360/002000-09-30 → 2000-09-30
    Underwater operations in progress until further notice by M/V ace nature in 54-38.9N 000-52.5W
  8. HYDROLANT 3347/002000-09-29 → 2000-10-02
    Underwater operations in progress until further notice by M/V akademik golitsyn within one mile of 51-35.3N…
  9. HYDROLANT 3335/002000-09-28 → 2000-09-29
    Underwater operations in progress until further notice by M/V ace nature in 54-38.9N 000-52.5W
  10. HYDROLANT 3325/002000-09-27 → 2000-10-03
    Underwater operations in progress until further notice by M/V discovery within two miles of 57-35N 000-42W
  11. HYDROLANT 3288/002000-09-24 → 2000-09-29
    Underwater operations in progress until further notice by M/V akademik golitsyn within one mile of 51-31.6N…
  12. HYDROLANT 3061/002000-09-04 → 2000-09-05
    Underwater operations in progress until further notice by M/V ace nature vicinity 52-27N 002-10E
  13. HYDROLANT 2984/002000-08-27 → 2000-09-01
    Underwater operations in progress until further notice by M/V toisa crest vicinity of trackline between…
  14. HYDROLANT 2927/002000-08-23 → 2000-08-23
    Underwater operations in progress until further notice by M/V ace nature vicinity 55-39N 002-23E
  15. HYDROLANT 2917/002000-08-21 → 2000-08-22
    Underwater operations in progress until further notice by M/V ace nature with submersible vicinity 55-27N…
  16. HYDROLANT 2911/002000-08-20 → 2000-08-21
    Underwater operations in progress until further notice by M/V ace nature vicinity 55-23N 001-27E
  17. HYDROLANT 2892/002000-08-19 → 2000-08-20
    Underwater operations in progress until further notice by M/V ace nature vicinity of trackline between…
  18. HYDROLANT 2866/002000-08-16 → 2000-08-18
    Underwater operations in progress until further notice by M/V seaworker within one mile of trackline between…
  19. HYDROLANT 2846/002000-08-14 → 2000-08-24
    Underwater operations in progress until further notice by M/V mirfak vicinity of trackline between 54-50N…
  20. HYDROLANT 2838/002000-08-13 → 2000-08-14
    Underwater operations in progress until further notice by M/V mirfak vicinity of trackline between 54-24N…
  21. HYDROLANT 2835/002000-08-13 → 2000-08-13
    Underwater operations in progress until further notice by M/V mirfak vicinity of trackline between 54-11N…
  22. HYDROLANT 2812/002000-08-11 → 2000-08-15
    Survey operations in progress until further notice by M/V ernest shackleton vicinity of trackline between…
  23. HYDROLANT 2779/002000-08-09 → 2000-08-12
    Underwater operations in progress until further notice by M/V neetegaz 66 vicinity of trackline between…
  24. HYDROLANT 2744/002000-08-06 → 2000-08-09
    Underwater operations in progress until further notice by M/V neetegaz 66 vicinity of trackline joining…
  25. HYDROLANT 2737/002000-08-05 → 2000-08-06
    Underwater operations in progress until further notice by M/V neetegaz 66 vicinity of trackline between…
  26. HYDROLANT 2725/002000-08-04 → 2000-09-27
    Underwater operations in progress until further notice by M/V goosander anchored in 51-22.3N 002-40.4E
  27. HYDROLANT 2714/002000-08-03 → 2000-08-04
    Underwater operations in progress until further notice by M/V neetegaz 66 vicinity of trackline between…
  28. HYDROLANT 2687/002000-08-01 → 2000-08-03
    Underwater operations in progress until further notice by M/V neetegaz 66 vicinity of trackline between…
  29. HYDROLANT 2590/002000-07-23 → 2000-07-25
    Survey operations in progress until further notice by M/V elinor within: a. two miles of 53-16.6N 000-39.6E
  30. HYDROLANT 2541/002000-07-19 → 2000-07-21
    Survey operations in progress until further notice by M/V elinor within: a. two miles of 53-16.6N 000-39.6E
  31. HYDROLANT 2524/002000-07-17 → 2000-07-31
    Underwater operations in progress until further notice by M/V oil express vicinity 51-22.3N 002-30.4E
  32. HYDROLANT 2519/002000-07-17 → 2000-07-23
    Underwater operations in progress until further notice by M/V geo searcher vicinity of trackline between…
  33. HYDROLANT 2381/002000-07-05 → 2000-08-16
    Underwater operations in progress until further notice by M/V seaworker within one mile of trackline between…
  34. HYDROLANT 2246/002000-06-23 → 2000-09-04
    Hydrographic survey in progress until further notice by M/V antares in area bound by 52-01N 002-34E, 52-54N…
  35. HYDROLANT 2167/002000-06-16 → 2000-06-21
    Underwater operations in progress until further notice by M/V mansal 18 vicinity of trackline between 52-26N…
  36. HYDROLANT 2093/002000-06-11 → 2000-07-02
    Underwater operations in progress until further notice by M/V goosander vicinity 51-22.3N 002-30.4E
  37. HYDROLANT 1857/002000-05-22 → 2000-05-24
    Underwater operations in progress until further notice by M/V toisa crest vicinity of trackline between…
  38. HYDROLANT 1743/002000-05-15 → 2000-06-21
    Underwater operations in progress until further notice by M/V seaworker in area bound by 54-37.5N 001-01.8W,…
  39. HYDROLANT 1742/002000-05-15 → 2000-05-20
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 55-28N…
  40. HYDROLANT 1715/002000-05-13 → 2000-05-15
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 55-16N…
  41. HYDROLANT 1698/002000-05-12 → 2000-05-17
    Underwater operations in progress until further notice by M/V goosander with support vessels and buoys…
  42. HYDROLANT 1696/002000-05-12 → 2000-05-13
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 55-03N…
  43. HYDROLANT 1650/002000-05-09 → 2000-05-12
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 54-45N…
  44. HYDROLANT 1639/002000-05-09 → 2000-05-12
    Underwater operations in progress until further notice by M/V hiendal vicinity 51-22.3N 002-30.4E
  45. HYDROLANT 1626/002000-05-08 → 2000-05-09
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 54-39N…
  46. HYDROLANT 1625/002000-05-08 → 2000-05-08
    Underwater operations in progress until further notice by M/V statesman vicinity of trackline between 54-39N…
  47. HYDROLANT 1594/002000-05-05 → 2000-05-15
    Underwater operations in progress until further notice by M/V seaworker in area bound by 54-37.5N 001-01.8W,…
  48. HYDROLANT 1529/002000-04-29 → 2000-05-09
    Underwater operations in progress until further notice by M/V goosander vicinity 51-22.3N 002-30.4E
  49. HYDROLANT 1520/002000-04-29 → 2000-05-08
    Underwater operations in progress until further notice by M/V ace nature with submersible vicinity 52-20.7N…
  50. HYDROLANT 1495/002000-04-27 → 2000-04-29
    Underwater operations in progress until further notice by M/V ace nature with submersible vicinity 52-20.7N…

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.

Survey operations in the North Sea — page 10 · seahazards