Cable & pipeline work in the South Atlantic Ocean

Cable laying, pipeline and seismic operations.

in force
2
last 12 months
3
vs previous 12 (2)
+50%
since 1998
5,172

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

  1. HYDROLANT 1497/26in force2026-08-04
    Survey operations by cableship Nautilus are in progress near Angola until 22 August; wide berth requested.
    South Atlantic · Angola
  2. NAVAREA II 269/26in force2026-07-02
    Seismic survey by vessel Ramform Victory is in progress off Pointe Noire until further notice; wide berth requested.
    Pointe Noire

Longest in force

  1. NAVAREA II 269/26in force2026-07-02 · 52 d
    Seismic survey by vessel Ramform Victory is in progress off Pointe Noire until further notice; wide berth requested.
    Pointe Noire
  2. HYDROLANT 1497/26in force2026-08-04 · 19 d
    Survey operations by cableship Nautilus are in progress near Angola until 22 August; wide berth requested.
    South Atlantic · Angola

By year

98
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
25
26

By month (all years)

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

Other hazards in the South Atlantic Ocean

Archive · 5,170 cancelled

  1. HYDROLANT 188/012001-01-17 → 2001-01-19
    Seismic survery in progress until 18 jan by M/V veritas viking II towing six 6500 meter long cables in area…
  2. HYDROLANT 187/012001-01-17 → 2001-01-21
    Underwater cable operations 182000Z to 211620Z jan by M/V teliri along trackline joining 23-27.0S 042-00.0W,…
  3. HYDROLANT 186/012001-01-17 → 2001-01-22
    Seismic survey in progress until 21 jan by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  4. HYDROLANT 185/012001-01-17 → 2001-01-20
    Seismic survey in progress until 19 jan by M/V northern access towing 8704 meter long cable in area bound by…
  5. HYDROLANT 169/012001-01-16 → 2001-01-21
    Seismic survey in progress until 20 jan by M/V western patriot towing seven 3000 meter long cables in area…
  6. HYDROLANT 168/012001-01-16 → 2001-01-21
    Seismic survey in progress until 20 jan by M/V western kenda towing eight 4000 meter long cables in area…
  7. HYDROLANT 167/012001-01-16 → 2001-01-20
    Seismic survey in progress until 19 jan by M/V ramform explorer and M/V willbeest towing eight 6500 meter…
  8. HYDROLANT 166/012001-01-16 → 2001-01-20
    Seismic survey in progress until 19 jan by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  9. HYDROLANT 147/012001-01-14 → 2001-01-17
    Seismic survey in progress until 16 jan by M/V northern access towing 8704 meter long cable in area bound by…
  10. HYDROLANT 146/012001-01-14 → 2001-01-16
    Seismic survey in progress until 15 jan by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  11. HYDROLANT 144/012001-01-14 → 2001-01-17
    Seismic survey in progress until 16 jan by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  12. HYDROLANT 139/012001-01-13 → 2001-01-18
    Seismic survey by M/V geco tau towing 8300 meter long cable: a. in progress until 14 jan in area bound by…
  13. HYDROLANT 137/012001-01-13 → 2001-01-16
    Seismic survey in progress until 15 jan by M/V ramform explorer and M/V willbeest towing eight 6500 meter…
  14. HYDROLANT 136/012001-01-13 → 2001-01-15
    Seismic survey in progress until 14 jan by M/V veritas viking II towing six 6500 meter long cables in area…
  15. HYDROLANT 128/012001-01-12 → 2001-01-13
    Seismic survey in progress until 12 jan by M/V geco tau towing 8300 meter long cable in area bound by 02-12S…
  16. HYDROLANT 127/012001-01-12 → 2001-01-17
    Underwater cable operations in progress until 16 jan by M/V teliri along trackline joining 18-29.6S…
  17. HYDROLANT 125/012001-01-12 → 2001-01-13
    Underwater cable operations in progress until 12 jan by M/V osa vigilant towing submersible along trackline…
  18. HYDROLANT 117/012001-01-11 → 2001-01-16
    Seismic survey in progress until 15 jan by M/V western atlas and M/V western patriot towing seven 3000 meter…
  19. HYDROLANT 116/012001-01-11 → 2001-01-13
    Seismic survey in progress until 15 jan by M/V western regent and M/V kenda towing eight 4000 meter long…
  20. HYDROLANT 115/012001-01-11 → 2001-01-14
    Seismic survey in progress until 13 jan by M/V northern access towing 8704 meter long cable in area bound by…
  21. HYDROLANT 114/012001-01-11 → 2001-01-14
    Seismic survey in progress until 13 jan by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  22. HYDROLANT 113/012001-01-11 → 2001-01-13
    Seismic survey in progress until 12 jan by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  23. HYDROLANT 112/012001-01-11 → 2001-01-12
    Seismic survey in progress until 12 jan by M/V geco tau towing 8300 meter long cable in area bound by 02-12S…
  24. HYDROLANT 92/012001-01-09 → 2001-01-11
    Seismic survey in progress until 10 jan by M/V northern access towing 8704 meter long cable in area bound by…
  25. HYDROLANT 91/012001-01-09 → 2001-01-13
    Seismic survey in progress until 12 jan by M/V ramform explorer towing eight 6500 meter long cables in area…
  26. HYDROLANT 90/012001-01-09 → 2001-01-11
    Seismic survey in progress until 10 jan by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  27. HYDROLANT 88/012001-01-09 → 2001-01-11
    Seismic survey in progress until 11 jan by M/V geco tau towing 8300 meter long cable in area bound by 01-04S…
  28. HYDROLANT 69/012001-01-07 → 2001-01-11
    Seismic survey in progress until 10 jan by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  29. HYDROLANT 58/012001-01-06 → 2001-01-09
    Seismic survey in progress until 08 jan by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  30. HYDROLANT 56/012001-01-06 → 2001-01-09
    Seismic survey in progress until 08 jan by M/V geco tau towing 8300 meter long cable in area bound by 00-59S…
  31. HYDROLANT 41/012001-01-05 → 2001-01-11
    Seismic survey in progress until 11 jan by M/V western atlas and M/V western patriot towing seven 3000 meter…
  32. HYDROLANT 40/012001-01-05 → 2001-01-11
    Seismic survey in progress until 10 jan by M/V western regent and M/V kenda towing eight 4000 meter long…
  33. HYDROLANT 39/012001-01-05 → 2001-01-08
    Seismic survey in progress until 07 jan by M/V northern access towing 8704 meter long cable in area bound by…
  34. HYDROLANT 28/012001-01-04 → 2001-01-07
    Seismic survey in progress until 06 jan by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  35. HYDROLANT 26/012001-01-04 → 2001-01-06
    Seismic survey in progress until 05 jan by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  36. HYDROLANT 17/012001-01-02 → 2001-01-05
    Seismic survey in progress until 04 jan by M/V northern access towing 8704 meter long cable in area bound by…
  37. HYDROLANT 10/012001-01-02 → 2001-01-04
    Seismic survey in progress until 03 jan by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  38. HYDROLANT 1/012001-01-01 → 2001-01-06
    Seismic survey in progress until 05 jan by M/V western atlas and M/V western patriot towing seven 3000 meter…
  39. HYDROLANT 4289/002000-12-31 → 2001-01-04
    Seismic survey in progress until 03 jan by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  40. HYDROLANT 4288/002000-12-31 → 2001-01-05
    Seismic survey in progress until 04 jan by M/V western regent towing eight 4000 meter long cables in area…
  41. HYDROLANT 4282/002000-12-30 → 2001-01-02
    Seismic survey in progress until 01 jan by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  42. HYDROLANT 4278/002000-12-30 → 2001-01-02
    Seismic survey in progress until 01 jan by M/V northern access towing 8704 meter long cable in area bound by…
  43. HYDROLANT 4266/002000-12-29 → 2001-01-02
    Underwater cable operations in progress until 01 jan by M/V osa vigilant towing submersible along trackline…
  44. HYDROLANT 4251/002000-12-28 → 2001-01-01
    Seismic survey in progress until 31 dec by M/V geco tau towing 10200 meter long cable in area bound by…
  45. HYDROLANT 4249/002000-12-28 → 2000-12-31
    Seismic survey in progress until 30 dec by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  46. HYDROLANT 4220/002000-12-24 → 2000-12-28
    Seismic survey in progress until 27 dec by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  47. HYDROLANT 4219/002000-12-24 → 2000-12-28
    Seismic survey in progress until 27 dec by M/V geco tau towing 10200 meter long cable in area bound by…
  48. HYDROLANT 4218/002000-12-24 → 2000-12-29
    Underwater cable operations 26 dec thru 28 dec by M/V osa vigilant towing submersible with 1000 meter long…
  49. HYDROLANT 4216/002000-12-24 → 2000-12-30
    Seismic survey in progress until 29 dec by M/V northern access towing 8704 meter long cable in area bound by…
  50. HYDROLANT 4208/002000-12-23 → 2000-12-24
    Underwater cable operations in progress until 23 dec by M/V osa vigilant towing submersible along trackline…

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.

Cable & pipeline work in the South Atlantic Ocean — page 84 · seahazards