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 4203/002000-12-22 → 2000-12-31
    Seismic survey in progress until 30 dec by M/V western regent and M/V western kenda towing eight 4000 meter…
  2. HYDROLANT 4194/002000-12-22 → 2000-12-31
    Seismic survey in progress until 30 dec by M/V western atlas and M/V western patriot towing seven 3000 meter…
  3. HYDROLANT 4184/002000-12-21 → 2000-12-24
    Seismic survey in progress until 23 dec by M/V ramform explorer and M/V willbeest towing eight 7500 meter…
  4. HYDROLANT 4183/002000-12-21 → 2000-12-23
    Underwater cable operations in progress until 22 dec by M/V osa vigilant towing submersible along trackline…
  5. HYDROLANT 4182/002000-12-21 → 2000-12-24
    Seismic survey in progress until 23 dec by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  6. HYDROLANT 4180/002000-12-21 → 2000-12-28
    Underwater cable operations in progress until 27 dec by M/V teliri along trackline joining 10-10.0S…
  7. HYDROLANT 4170/002000-12-20 → 2000-12-21
    Underwater cable operations 201600Z to 231600Z dec by M/V osa vigilant towing submersible along trackline…
  8. HYDROLANT 4163/002000-12-19 → 2000-12-20
    Seismic survey in progress until 19 dec by M/V northern access towing 8704 meter long cable in area bound by…
  9. HYDROLANT 4153/002000-12-18 → 2000-12-21
    Seismic survey in progress until 20 dec by M/V ramform explorer and M/V willbeest towing eight 7500 meter…
  10. HYDROLANT 4145/002000-12-17 → 2000-12-21
    Underwater cable operations in progress until 24 dec by M/V teliri along trackline joining 10-18.0S…
  11. HYDROLANT 4140/002000-12-16 → 2000-12-18
    Seismic survey in progress until 17 dec by M/V ramform explorer and M/V willbeest towing eight 7500 meter…
  12. HYDROLANT 4135/002000-12-16 → 2000-12-19
    Seismic survey in progress until 18 dec by M/V northern access towing 8704 meter long cable in area bound by…
  13. HYDROLANT 4134/002000-12-16 → 2000-12-19
    Seismic survey in progress until 18 dec by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  14. HYDROLANT 4133/002000-12-16 → 2000-12-23
    Seismic survey in progress until 22 dec by M/V western inlet towing 6667 meter long cable with submerged…
  15. HYDROLANT 4120/002000-12-15 → 2000-12-21
    Seismic survey in progress until 20 dec by M/V western regent and M/V western kenda towing eight 4000 meter…
  16. HYDROLANT 4119/002000-12-15 → 2000-12-20
    Seismic survey in progress until 19 dec by M/V western atlas and M/V western patriot towing seven 3000 meter…
  17. HYDROLANT 4102/002000-12-13 → 2000-12-17
    Cable laying operations in progress until 20 dec by M/V teliri towing 1500 meter long cable along trackline…
  18. HYDROLANT 4101/002000-12-13 → 2000-12-16
    Seismic survey in progress until 15 dec by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  19. HYDROLANT 4100/002000-12-13 → 2000-12-16
    Seismic survey in progress until 15 dec by M/V northern access towing 8704 meter long cable in area bound by…
  20. HYDROLANT 4095/002000-12-12 → 2000-12-14
    Seismic survey in progress until 13 dec by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  21. HYDROLANT 4087/002000-12-11 → 2000-12-20
    Underwater cable operations in progress until 20 dec by M/V osa vigilant towing submersible along trackline…
  22. HYDROLANT 4086/002000-12-11 → 2000-12-13
    Seismic survey in progress until 12 dec by M/V northern access towing 8704 meter long cable in area bound by…
  23. HYDROLANT 4080/002000-12-10 → 2000-12-11
    Seismic survey in progress until 10 dec by M/V northern access towing 8704 meter long cable in area bound by…
  24. HYDROLANT 4079/002000-12-10 → 2000-12-11
    Underwater cable operations in progress until 10 dec by M/V osa vigilant towing submersible vicinity…
  25. HYDROLANT 4078/002000-12-10 → 2000-12-15
    Seismic survey in progress until 14 dec by M/V western atlas and M/V western patriot towing seven 3000 meter…
  26. HYDROLANT 4077/002000-12-10 → 2000-12-15
    Seismic survey in progress until 15 dec by M/V western regent and M/V western kenda towing eight 4000 meter…
  27. HYDROLANT 4076/002000-12-10 → 2000-12-13
    Cable laying operations in progress until 12 dec by M/V teliri towing 1500 meter long cable along trackline…
  28. HYDROLANT 4071/002000-12-09 → 2000-12-13
    Seismic survey in progress until 12 dec by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  29. HYDROLANT 4070/002000-12-09 → 2000-12-16
    Seismic survey in progress until 15 dec by M/V western inlet towing 6667 meter long cable in area bound by…
  30. HYDROLANT 4064/002000-12-08 → 2000-12-12
    Seismic survey in progress until 11 dec by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  31. HYDROLANT 4063/002000-12-08 → 2000-12-10
    Underwater cable operations 08 thru 09 dec by M/V osa vigilant towing submersible vicinity 23-05S 043-29W
  32. HYDROLANT 4057/002000-12-07 → 2000-12-09
    Seismic survey in progress until 08 dec by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  33. HYDROLANT 4050/002000-12-06 → 2000-12-10
    Seismic survey in progress until 09 dec by M/V northern access towing 8704 meter long cable in area bound by…
  34. HYDROLANT 4049/002000-12-06 → 2000-12-08
    Seismic survey in progress until 07 dec by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  35. HYDROLANT 4047/002000-12-06 → 2000-12-10
    Seismic survey in progress until 09 dec by M/V western atlas and M/V western patriot towing seven 3000 meter…
  36. HYDROLANT 4046/002000-12-06 → 2000-12-11
    Seismic survey in progress until 10 dec by M/V western regent and M/V western kenda towing eight 4000 meter…
  37. HYDROLANT 4045/002000-12-06 → 2000-12-10
    Cable laying operations in progress until 09 dec by M/V teliri towing 1500 meter long cable along trackline…
  38. HYDROLANT 4044/002000-12-06 → 2000-12-07
    4000 meter long seismic cable adrift in 23-08S 039-40W at 051830Z dec
  39. HYDROLANT 4037/002000-12-05 → 2000-12-08
    Underwater cable operations 05 thru 07 dec by M/V osa vigilant vicinity 23-05S 043-29W
  40. HYDROLANT 4017/002000-12-02 → 2000-12-06
    Seismic survey in progress until 05 dec by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  41. HYDROLANT 4011/002000-12-02 → 2000-12-09
    Seismic survey in progress until 09 dec by M/V western inlet towing 6667 meter long cable in area bound by…
  42. HYDROLANT 4007/002000-12-02 → 2000-12-06
    Seismic survey in progress until 05 dec by M/V northern access towing 8704 meter long cable in area bound by…
  43. HYDROLANT 4006/002000-12-02 → 2000-12-06
    Seismic survey in progress until 05 dec by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  44. HYDROLANT 3987/002000-11-30 → 2000-12-04
    Seismic survey in progress until 03 dec by M/V ramform explorer towing eight 7500 meter long cables in area…
  45. HYDROLANT 3976/002000-11-29 → 2000-12-02
    Seismic survey in progress until 01 dec by M/V northern access towing 8704 meter long cable in area bound by…
  46. HYDROLANT 3975/002000-11-29 → 2000-12-02
    Seismic survey in progress until 01 dec by M/V cgg harmattan towing six 6482 meter long cables in area bound…
  47. HYDROLANT 3971/002000-11-29 → 2000-12-04
    Cable laying operations 291600Z nov to 040900Z dec by M/V teliri towing 1500 meter long cable along…
  48. HYDROLANT 3970/002000-11-29 → 2000-12-03
    Seismic survey in progress until 02 dec by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  49. HYDROLANT 3964/002000-11-28 → 2000-11-29
    Seismic survey in progress until 28 nov by M/V northern access towing 8704 meter long cable in area bound by…
  50. HYDROLANT 3956/002000-11-27 → 2000-11-30
    Seismic survey in progress until 29 nov by M/V ramform explorer towing eight 7500 meter long cables in area…

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 85 · seahazards