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 3955/002000-11-27 → 2000-11-30
    Seismic survey in progress until 29 nov by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  2. HYDROLANT 3951/002000-11-26 → 2000-12-01
    Seismic survey in progress until 30 nov by M/V western regent and M/V western kenda towing eight 4000 meter…
  3. HYDROLANT 3948/002000-11-26 → 2000-11-29
    Seismic survey in progress until 28 nov by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  4. HYDROLANT 3947/002000-11-26 → 2000-11-29
    Cable laying operations 261600Z nov to 010900Z dec by M/V teliri towing 1500 meter long cable and equipment…
  5. HYDROLANT 3946/002000-11-26 → 2000-12-02
    Seismic survey in progress until 02 dec by M/V western inlet towing 6667 meter long cable in area bound by…
  6. HYDROLANT 3945/002000-11-26 → 2000-11-30
    Seismic survey in progress until 29 nov by M/V geco tau towing 8300 meter long cable in area bound by 02-40S…
  7. HYDROLANT 3944/002000-11-26 → 2000-11-28
    Seismic survey in progress until 27 nov by M/V northern access towing 8704 meter long cable in area bound by…
  8. HYDROLANT 3919/002000-11-24 → 2000-11-27
    Seismic survey in progress until 26 nov by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  9. HYDROLANT 3918/002000-11-24 → 2000-11-30
    Seismic survey in progress until 29 nov by M/V western atlas and M/V western patriot towing seven 3000 meter…
  10. HYDROLANT 3911/002000-11-23 → 2000-11-26
    Seismic survey in progress until 25 nov by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  11. HYDROLANT 3908/002000-11-22 → 2000-11-24
    Underwater cable operations in progress until 242000Z nov by M/V osa vigilant towing submersible along…
  12. HYDROLANT 3905/002000-11-22 → 2000-11-25
    Cable laying operations 230600Z to 250900Z nov by M/V teliri towing 1500 meter long cable and equipment…
  13. HYDROLANT 3904/002000-11-22 → 2000-11-25
    Seismic survey in progress until 24 nov by M/V northern access towing 8704 meter long cable in area bound by…
  14. HYDROLANT 3899/002000-11-21 → 2000-11-22
    Cable laying operations 210500Z to 220300Z nov by M/V teliri towing 1500 meter long cable and equipment…
  15. HYDROLANT 3898/002000-11-21 → 2000-11-26
    Seismic survey in progress until 26 nov by M/V geco tau towing 8300 meter long cable in area bound by 02-40S…
  16. HYDROLANT 3897/002000-11-21 → 2000-11-24
    Seismic survey in progress until 23 nov by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  17. HYDROLANT 3892/002000-11-20 → 2000-11-24
    Seismic survey in progress until 23 nov by M/V ramform explorer towing eight 7500 meter long cables in area…
  18. HYDROLANT 3891/002000-11-20 → 2000-11-26
    Seismic survey in progress until 25 nov by M/V western regent and M/V western kenda towing eight 4000 meter…
  19. HYDROLANT 3890/002000-11-20 → 2000-11-24
    Seismic survey in progress until 24 nov by M/V western atlas and M/V western patriot towing seven 3000 meter…
  20. HYDROLANT 3883/002000-11-19 → 2000-11-22
    Seismic survey in progress until 21 nov by M/V northern access towing 8704 meter long cable in area bound by…
  21. HYDROLANT 3882/002000-11-19 → 2000-11-20
    Underwater cable operations in progress until 201700Z nov by M/V osa vigilant towing submersible along…
  22. HYDROLANT 3875/002000-11-18 → 2000-11-20
    Seismic survey in progress until 19 nov by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  23. HYDROLANT 3874/002000-11-18 → 2000-11-23
    Seismic survey in progress until 22 nov by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  24. HYDROLANT 3872/002000-11-18 → 2000-11-20
    Seismic survey in progress until 20 nov by M/V ramform explorer towing eight 7500 meter long cables in area…
  25. HYDROLANT 3860/002000-11-16 → 2000-11-20
    Cable laying operations 171600Z to 201600Z nov by M/V teliri towing 1500 meter long cable and equipment…
  26. HYDROLANT 3859/002000-11-16 → 2000-11-19
    Seismic survey in progress until 18 nov by M/V ramform vanguard and M/V kondor explorer towing ten 4800…
  27. HYDROLANT 3858/002000-11-16 → 2000-11-18
    Seismic survey in progress until 17 nov by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  28. HYDROLANT 3857/002000-11-16 → 2000-11-18
    Seismic survey in progress until 17 nov by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  29. HYDROLANT 3848/002000-11-15 → 2000-11-20
    Seismic survey in progress until 19 nov by M/V western atlas and M/V western patriot towing seven 3000 meter…
  30. HYDROLANT 3847/002000-11-15 → 2000-11-20
    Seismic survey in progress until 20 nov by M/V western regent and M/V western kenda towing eight 4000 meter…
  31. HYDROLANT 3846/002000-11-15 → 2000-11-18
    Underwater cable operations in progress until 181700Z nov by M/V osa vigilant towing submersible along…
  32. HYDROLANT 3845/002000-11-15 → 2000-11-22
    Seismic survey in progress until 21 nov by M/V geco tau towing 8300 meter long cable in area bound by 02-40S…
  33. HYDROLANT 3833/002000-11-14 → 2000-11-18
    Seismic survey in progress until 17 nov by M/V ramform explorer towing eight 7500 meter long cables in area…
  34. HYDROLANT 3814/002000-11-13 → 2000-11-16
    Seismic survey in progress until 15 nov by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  35. HYDROLANT 3813/002000-11-13 → 2000-11-16
    Seismic survey in progress until 15 nov by M/V northern access towing 8704 meter long cable in area bound by…
  36. HYDROLANT 3812/002000-11-13 → 2000-11-15
    Seismic survey in progress until 15 nov by M/V geco tau towing 8300 meter long cable in area bound by 02-40S…
  37. HYDROLANT 3809/002000-11-12 → 2000-11-13
    Seismic survey in progress until 14 nov by M/V northern access towing 8704 meter long cable in area bound by…
  38. HYDROLANT 3803/002000-11-11 → 2000-11-16
    Seismic survey in progress until 15 nov by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  39. HYDROLANT 3802/002000-11-11 → 2000-11-14
    Seismic survey in progress until 13 nov by M/V ramform explorer towing eight 7500 meter long cables in area…
  40. HYDROLANT 3792/002000-11-10 → 2000-11-13
    Seismic survey in progress until 12 nov by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  41. HYDROLANT 3790/002000-11-10 → 2000-11-13
    Seismic survey in progress until 12 nov by M/V western regent and M/V western kenda towing eight 4000 meter…
  42. HYDROLANT 3771/002000-11-09 → 2000-11-13
    Seismic survey in progress until 14 nov by M/V geco tau towing 8300 meter long cable in area bound by 02-30S…
  43. HYDROLANT 3769/002000-11-09 → 2000-11-12
    Seismic survey in progress until 11 nov by M/V northern access towing 8704 meter long cable in area bound by…
  44. HYDROLANT 3756/002000-11-08 → 2000-11-12
    Underwater cable operations in progress until 122000Z nov by M/V osa vigilant towing submersible along…
  45. HYDROLANT 3747/002000-11-07 → 2000-11-09
    Seismic survey in progress until 08 nov by M/V geco tau towing 8300 meter long cable in area bound by 03-21S…
  46. HYDROLANT 3746/002000-11-07 → 2000-11-11
    Seismic survey in progress until 10 nov by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  47. HYDROLANT 3745/002000-11-07 → 2000-11-09
    Seismic survey in progress until 08 nov by M/V northern access towing 8704 meter long cable in area bound by…
  48. HYDROLANT 3744/002000-11-07 → 2000-11-12
    Seismic survey in progress until 11 nov by M/V ramform explorer towing eight 7500 meter long cables in area…
  49. HYDROLANT 3743/002000-11-07 → 2000-11-10
    Seismic survey in progress until 09 nov by M/V western regent and M/V western kenda towing eight 4000 meter…
  50. HYDROLANT 3727/002000-11-06 → 2000-11-07
    Seismic survey in progress until 06 nov 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 86 · seahazards