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 3726/002000-11-06 → 2000-11-10
    Seismic survey in progress until 09 nov by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  2. HYDROLANT 3719/002000-11-05 → 2000-11-10
    Seismic survey in progress until 09 nov by M/V western atlas and M/V western patriot towing seven 3000 meter…
  3. HYDROLANT 3714/002000-11-04 → 2000-11-06
    Seismic survey in progress until 05 nov by M/V northern access towing 8704 meter long cable in area bound by…
  4. HYDROLANT 3709/002000-11-04 → 2000-11-07
    Seismic survey in progress until 06 nov by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  5. HYDROLANT 3708/002000-11-04 → 2000-11-08
    Underwater cable operations in progress until 082000Z nov by M/V osa vigilant with submersible along…
  6. HYDROLANT 3696/002000-11-03 → 2000-11-06
    Seismic survey in progress until 05 nov by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  7. HYDROLANT 3679/002000-11-02 → 2000-11-06
    Seismic survey in progress until 05 nov by M/V geco tau towing 8300 meter long cable in area bound by 03-30S…
  8. HYDROLANT 3678/002000-11-02 → 2000-11-07
    Seismic survey in progress until 07 nov by M/V western regent and M/V western kenda towing eight 4000 meter…
  9. HYDROLANT 3670/002000-11-01 → 2000-11-04
    Seismic survey in progress until 03 nov by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  10. HYDROLANT 3668/002000-11-01 → 2000-11-03
    Seismic survey in progress until 02 nov by M/V northern access towing 8704 meter long cable in area bound by…
  11. HYDROLANT 3657/002000-10-31 → 2000-11-04
    Seismic survey in progress until 03 nov by M/V ramform explorer towing eight 7500 meter long cables in area…
  12. HYDROLANT 3656/002000-10-31 → 2000-11-03
    Seismic survey in progress until 02 nov by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  13. HYDROLANT 3654/002000-10-31 → 2000-11-05
    Seismic survey in progress until 04 nov by M/V western atlas and M/V western patriot towing seven 3000 meter…
  14. HYDROLANT 3652/002000-10-31 → 2000-11-01
    Seismic survey in progress until 31 oct by M/V geco tau towing 8300 meter long cable in area bound by 03-43S…
  15. HYDROLANT 3647/002000-10-30 → 2000-11-01
    Seismic survey in progress until 01 nov by M/V northern access towing 8704 meter long cable in area bound by…
  16. HYDROLANT 3641/002000-10-29 → 2000-11-01
    Seismic survey in progress until 31 october by M/V cgg harmattan towing six 6482 meter long cables in area…
  17. HYDROLANT 3639/002000-10-28 → 2000-10-31
    Seismic survey in progress until 30 oct by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  18. HYDROLANT 3638/002000-10-28 → 2000-10-30
    Seismic survey in progress until 29 oct by M/V northern access towing 8704 meter long cable in area bound by…
  19. HYDROLANT 3637/002000-10-28 → 2000-11-02
    Seismic survey in progress until 02 nov by M/V western regent and M/V western kenda towing eight 4000 meter…
  20. HYDROLANT 3636/002000-10-28 → 2000-10-31
    Seismic survey in progress until 30 oct by M/V ramform explorer towing eight 7500 meter long cables in area…
  21. HYDROLANT 3630/002000-10-27 → 2000-11-03
    Underwater cable operations in progress until 032000Z nov by M/V osa vigilant with submersible along…
  22. HYDROLANT 3622/002000-10-26 → 2000-10-29
    Seismic survey in progress until 28 oct by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  23. HYDROLANT 3616/002000-10-25 → 2000-10-31
    Seismic survey in progress until 30 oct by M/V western atlas and M/V western patriot towing seven 3000 meter…
  24. HYDROLANT 3613/002000-10-25 → 2000-10-28
    Seismic survey in progress until 27 oct by M/V geco tau towing 8300 meter long cable in area bound by 02-30S…
  25. HYDROLANT 3612/002000-10-25 → 2000-10-28
    Seismic survey in progress until 27 oct by M/V northern access towing 8704 meter long cable in area bound by…
  26. HYDROLANT 3611/002000-10-25 → 2000-10-28
    Seismic survey in progress until 29 oct by M/V western regent and M/V western kenda towing eight 4000 meter…
  27. HYDROLANT 3606/002000-10-24 → 2000-10-28
    Seismic survey in progress until 27 oct by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  28. HYDROLANT 3605/002000-10-24 → 2000-10-28
    Seismic survey in progress until 27 oct by M/V ramform explorer towing eight 7500 meter long cables in area…
  29. HYDROLANT 3604/002000-10-24 → 2000-10-25
    Seismic survey in progress until 26 oct by M/V geco tau towing 8300 meter long cable in area bound by 04-58S…
  30. HYDROLANT 3592/002000-10-23 → 2000-10-26
    Seismic survey in progress until 25 oct by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  31. HYDROLANT 3580/002000-10-22 → 2000-10-25
    Seismic survey in progress until 24 oct by M/V northern access towing 8704 meter long cable in area bound by…
  32. HYDROLANT 3579/002000-10-22 → 2000-10-24
    Seismic survey in progress until 24 oct by M/V geco tau towing 8300 meter long cable in area bound by 03-30S…
  33. HYDROLANT 3566/002000-10-21 → 2000-10-24
    Seismic survey in progress until 23 oct by M/V ramford explorer towing eight 7500 meter long cables in area…
  34. HYDROLANT 3565/002000-10-21 → 2000-10-25
    Seismic survey in progress until 25 oct by M/V western atlas and M/V western patriot towing seven 3000 meter…
  35. HYDROLANT 3564/002000-10-21 → 2000-10-25
    Seismic survey in progress until 24 oct by M/V western regent and M/V western kenda towing eight 4000 meter…
  36. HYDROLANT 3558/002000-10-20 → 2000-10-23
    Seismic survey in progress until 22 oct by M/V cgg harmattan towing 6000 meter long cable in area bound by…
  37. HYDROLANT 3546/002000-10-19 → 2000-10-22
    Seismic survey in progress until 21 oct by M/V northern access towing 8704 meter long cable in area bound by…
  38. HYDROLANT 3545/002000-10-19 → 2000-10-24
    Seismic survey in progress until 23 oct by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  39. HYDROLANT 3544/002000-10-19 → 2000-10-22
    Seismic survey in progress until 21 oct by M/V geco tau towing 8300 meter long cable in area bound by 04-29S…
  40. HYDROLANT 3536/002000-10-18 → 2000-10-27
    Underwater cable operations 191700Z to 270300Z oct by M/V osa vigilant with submersible along trackline…
  41. HYDROLANT 3528/002000-10-17 → 2000-10-20
    Seismic survey in progress until 19 oct by M/V cgg harmattan towing 6000 meter long cable in area bound by…
  42. HYDROLANT 3527/002000-10-17 → 2000-10-21
    Seismic survey in progress until 20 oct by M/V ramform explorer towing eight 7500 meter long cables in area…
  43. HYDROLANT 3518/002000-10-16 → 2000-10-19
    Seismic survey in progress until 18 oct by M/V northern access towing 8704 meter long cable in area bound by…
  44. HYDROLANT 3517/002000-10-16 → 2000-10-19
    Seismic survey in progress until 19 oct by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  45. HYDROLANT 3516/002000-10-16 → 2000-10-21
    Seismic survey in progress until 20 oct by M/V western atlas and M/V western patriot towing seven 3000 meter…
  46. HYDROLANT 3505/002000-10-15 → 2000-10-17
    Seismic survey in progress until 16 oct by M/V ramform explorer towing eight 7500 meter long cables in area…
  47. HYDROLANT 3495/002000-10-13 → 2000-10-16
    Seismic survey in progress until 15 oct by M/V northern access towing 8704 meter long cable in area bound by…
  48. HYDROLANT 3494/002000-10-13 → 2000-10-17
    Seismic survey in progress until 16 oct by M/V cgg harmattan towing 6000 meter long cable in area bound by…
  49. HYDROLANT 3486/002000-10-13 → 2000-10-17
    Seismic survey in progress until 16 oct by M/V geco tau towing 8300 meter long cable in area bound by 04-38S…
  50. HYDROLANT 3485/002000-10-13 → 2000-10-13
    Seismic survey in progress until 15 oct by M/V northern access towing 8704 meter long cable in area bound by…

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 87 · seahazards