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 2314/012001-08-23 → 2001-08-27
    Seismic survey in progress until 270300Z aug by M/V cgg harmattan towing eight 6000 meter long cables in…
  2. HYDROLANT 2287/012001-08-19 → 2001-08-23
    Seismic survey in progress until 230300Z aug by M/V veritas viking II towing six 6500 meter long cables in…
  3. HYDROLANT 2286/012001-08-19 → 2001-08-23
    Seismic survey in progress until 230300Z aug by M/V cgg harmattan towing eight 6000 meter long cables in…
  4. HYDROLANT 2256/012001-08-15 → 2001-08-19
    Seismic survey 160300Z to 190300Z aug by M/V cgg harmattan towing eight 6000 meter long cables in area bound…
  5. HYDROLANT 2255/012001-08-15 → 2001-08-19
    Seismic survey 160300Z to 190300Z aug by M/V veritas viking II towing six 6500 meter long cables in area…
  6. HYDROLANT 2247/012001-08-14 → 2001-08-15
    Seismic survey in progress until 150300Z aug by M/V cgg harmattan towing eight 6000 meter long cables in…
  7. HYDROLANT 2223/012001-08-12 → 2001-08-16
    Seismic survey in progress until 15 aug by M/V veritas viking II towing six 6500 meter long cables in area…
  8. HYDROLANT 2215/012001-08-11 → 2001-08-14
    Seismic survey 120300Z to 140300Z aug by M/V cgg harmattan towing eight 4500 meter long cables in area bound…
  9. HYDROLANT 2193/012001-08-08 → 2001-08-11
    Underwater cable operations 082100Z to 110800Z aug by M/V maersk defender towing 1000 meter long cable along…
  10. HYDROLANT 2192/012001-08-08 → 2001-08-11
    Seismic survey 090300Z to 110300Z aug by M/V cgg harmattan towing eight 6000 meter long cables in area bound…
  11. HYDROLANT 2189/012001-08-07 → 2001-08-09
    Seismic survey in progress until 08 aug by M/V cgg harmattan towing eight 6000 meter long cables in area…
  12. HYDROLANT 2188/012001-08-07 → 2001-08-12
    Seismic survey 08 thru 11 aug by M/V veritas viking II towing six 6500 meter long cables in area bound by…
  13. HYDROLANT 2166/012001-08-04 → 2001-08-05
    Seismic survey in progress until 050300Z aug by M/V cgg harmattan towing eight 6000 meter long cables in…
  14. HYDROLANT 2156/012001-08-02 → 2001-08-06
    Underwater cable operations in progress until further notice by cableship nexus along trackline joining…
  15. HYDROLANT 2153/012001-08-02 → 2001-08-03
    Seismic survey in progress until 030300Z aug by M/V cgg harmattan towing eight 6000 meter long cables in…
  16. HYDROLANT 2152/012001-08-02 → 2001-08-07
    Seismic survey 030300Z to 070300Z aug by M/V veritas viking II towing six 6500 meter long cables in area…
  17. HYDROLANT 2147/012001-08-01 → 2001-08-02
    Underwater cable operations in progress until further notice by cableship nexus along trackline joining…
  18. HYDROLANT 2138/012001-07-31 → 2001-08-01
    Seismic survey in progress until 010300Z aug by M/V cgg harmattan towing eight 6000 meter long cables in…
  19. HYDROLANT 2137/012001-07-31 → 2001-08-02
    Seismic survey 010300Z to 030300Z aug by M/V veritas viking II towing six 6500 meter long cables in area…
  20. HYDROLANT 2136/012001-07-31 → 2001-08-07
    Underwater cable operations 312100Z jul to 071200Z aug by M/V maersk defender towing 1000 meter long cable…
  21. HYDROLANT 2130/012001-07-30 → 2001-08-01
    Cable laying operations in progress until further notice by cableship nexus along trackline joining 08-53.0S…
  22. HYDROLANT 2101/012001-07-27 → 2001-07-31
    Seismic survey 280300Z to 310300Z jul by M/V veritas viking II towing six 6500 meter long cables in area…
  23. HYDROLANT 2093/012001-07-26 → 2001-07-28
    Seismic survey in progress until 280300Z jul by M/V cgc harmattan towing six 6000 meter long cables in area…
  24. HYDROLANT 2075/012001-07-24 → 2001-07-30
    Cable laying operations in progress until further notice by cableship nexus along trackline between 08-44.2S…
  25. HYDROLANT 2068/012001-07-24 → 2001-07-27
    Seismic survey in progress until 270300Z jul by M/V veritas viking II towing six 6500 meter long cables in…
  26. HYDROLANT 2036/012001-07-20 → 2001-07-23
    Underwater cable operations in progress until 231800Z jul by M/V maersk defender towing 1000 meter long…
  27. HYDROLANT 2035/012001-07-20 → 2001-07-24
    Seismic survey in progress until 23 jul by M/V veritas viking II towing six 6500 meter long cables in area…
  28. HYDROLANT 2034/012001-07-19 → 2001-07-24
    Cable laying operations in progress until further notice by cableship nexus along trackline between 08-43.5S…
  29. HYDROLANT 2026/012001-07-18 → 2001-07-19
    Cable laying operations in progress until further notice by cableship nexus in 09-20.0S 010-31.8E
  30. HYDROLANT 2021/012001-07-18 → 2001-07-20
    Underwater cable operations in progress until 20 jul by M/V maersk defender towing 1000 meter long cable…
  31. HYDROLANT 2018/012001-07-18 → 2001-07-18
    Cable laying operations in progress until further notice by cableship nexus along trackline joining 10-14.3S…
  32. HYDROLANT 2000/012001-07-16 → 2001-07-20
    Seismic survey in progress until 19 jul by M/V veritas viking II towing six 6500 meter long cables in area…
  33. HYDROLANT 1982/012001-07-14 → 2001-07-18
    Seismic survey in progress until 17 jul by M/V cgg harmattan towing six 6000 meter long cables in area bound…
  34. HYDROLANT 1975/012001-07-13 → 2001-07-17
    Underwater cable operations in progress until 16 jul by M/V maersk defender towing 1000 meter long cable…
  35. HYDROLANT 1973/012001-07-13 → 2001-07-13
    Underwater cable operations in progress until 18 jul by M/V maersk defender towing 1000 meter long cable…
  36. HYDROLANT 1962/012001-07-12 → 2001-07-14
    Seismic survey in progress until 13 jul by M/V cgg harmattan towing six 6000 meter long cables in area bound…
  37. HYDROLANT 1961/012001-07-12 → 2001-07-16
    Seismic survey in progress until 15 jul by M/V veritas viking II towing six 6500 meter long cables in area…
  38. HYDROLANT 1960/012001-07-12 → 2001-07-15
    Submarine cable operations 130900Z to 150900Z jul by M/V lingue towing 1250 meter long cable vicinity of…
  39. HYDROLANT 1955/012001-07-11 → 2001-07-13
    Underwater cable operations in progress until 18 jul by M/V maersk defender in area bound by 09-57.1S…
  40. HYDROLANT 1938/012001-07-09 → 2001-07-10
    Cable laying operations in progress until 100900Z jul by cableship maersk defender along trackline joining…
  41. HYDROLANT 1932/012001-07-09 → 2001-07-12
    Seismic survey in progress until 11 jul by M/V cgg harmattan towing six 6000 meter long cables in area bound…
  42. HYDROLANT 1925/012001-07-08 → 2001-07-12
    Seismic survey in progress until 11 jul by M/V veritas viking II towing six 6500 meter long cables in area…
  43. HYDROLANT 1920/012001-07-07 → 2001-07-09
    Seismic survey in progress until 09 jul by M/V cgg harmattan towing six 6000 meter long cables in area bound…
  44. HYDROLANT 1913/012001-07-06 → 2001-07-07
    Seismic survey in progress until 07 jul by M/V cgg harmattan towing six 6000 meter long cables in area bound…
  45. HYDROLANT 1896/012001-07-04 → 2001-07-06
    Seismic survey in progress until 07 jul by M/V cgg harmattan towing six 6000 meter long cables in area bound…
  46. HYDROLANT 1888/012001-07-04 → 2001-07-08
    Seismic survey in progress until 07 jul by M/V veritas viking II towing six 6500 meter long cables in area…
  47. HYDROLANT 1867/012001-07-01 → 2001-07-04
    Seismic survey in progress until 03 jul by M/V veritas viking II towing six 6500 meter long cables in area…
  48. HYDROLANT 1830/012001-06-26 → 2001-07-01
    Seismic survey in progress until 30 jun by M/V veritas viking II towing six 6500 meter long cables in area…
  49. HYDROLANT 1821/012001-06-24 → 2001-06-27
    Seismic survey in progress until 26 jun by M/V cgg harmattan towing six 6000 meter long cables in area bound…
  50. HYDROLANT 1820/012001-06-24 → 2001-06-24
    Cable laying operations 25 jun thru 27 jul by M/V maersk defender along trackline joining 03-45.9S…

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 78 · seahazards