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 · 51 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 972/032003-05-18 → 2003-05-21
    Seismic survey in progress until 202359Z may by M/V cgg alize towing eight 7408 meter long cables in area…
  2. HYDROLANT 971/032003-05-18 → 2003-05-22
    Seismic survey in progress until 220400Z may by M/V tropicaliente towing five 6000 meter long cables in area…
  3. HYDROLANT 961/032003-05-17 → 2003-05-18
    Seismic survey in progress until 192300Z may by M/V tropicaliente towing five 6000 meter long cables in area…
  4. HYDROLANT 954/032003-05-15 → 2003-05-19
    Seismic survey in progress until 182359Z may by M/V cgg harmattan towing five 7408 meter long cables in area…
  5. HYDROLANT 953/032003-05-15 → 2003-05-18
    Seismic survey in progress until 172359Z may by M/V cgg alize towing eight 7408 meter long cables in area…
  6. HYDROLANT 948/032003-05-14 → 2003-08-04
    Seismic survey 15 may thru 15 aug by M/V ramform valiant towing ten 6000 meter long cables in area bound by…
  7. HYDROLANT 945/032003-05-14 → 2003-05-15
    Seismic survey in progress until 142359Z may by M/V cgg alize towing eight 7408 meter long cables in area…
  8. HYDROLANT 943/032003-05-13 → 2003-05-17
    Seismic survey in progress until 162300Z may by M/V tropicaliente towing five 6000 meter long cables in area…
  9. HYDROLANT 935/032003-05-12 → 2003-05-15
    Seismic survey in progress until 142359Z may by M/V cgg harmattan towing five 7408 meter long cables in area…
  10. HYDROLANT 931/032003-05-11 → 2003-05-14
    Seismic survey in progress until 132359Z may by M/V cgg alize towing eight 7408 meter long cables in area…
  11. HYDROLANT 924/032003-05-10 → 2003-05-13
    Seismic survey in progress until 130400Z may by M/V tropicaliente towing five 6000 meter long cables in area…
  12. HYDROLANT 914/032003-05-08 → 2003-05-11
    Seismic survey in progress until 102359Z may by M/V cgg alize towing eight 7408 meter long cables in area…
  13. HYDROLANT 909/032003-05-07 → 2003-05-12
    Seismic survey in progress until 112359Z may by M/V cgg harmattan towing five 7408 meter long cables in area…
  14. HYDROLANT 905/032003-05-06 → 2003-05-07
    Seismic survey in progress until 082359Z may by M/V cgg harmattan towing five 7408 meter long cables in area…
  15. HYDROLANT 889/032003-05-03 → 2003-05-06
    Seismic survey in progress until 052359Z may by M/V cgg harmattan towing five 7408 meter long cables in area…
  16. HYDROLANT 884/032003-05-02 → 2003-05-10
    Seismic survey in progress until 120400Z may by M/V tropicaliente towing five 6000 meter long cables in area…
  17. HYDROLANT 877/032003-04-30 → 2003-05-03
    Seismic survey in progress until 030200Z may by M/V cgg harmattan towing five 7408 meter long cables in area…
  18. HYDROLANT 862/032003-04-29 → 2003-05-03
    Seismic survey in progress until 030259Z may by M/V ramform viking towing ten 4600 meter long cables in area…
  19. HYDROLANT 861/032003-04-29 → 2003-05-02
    Seismic survey in progress until 020300Z may by M/V tropicaliente towing five 6000 meter long cables in area…
  20. HYDROLANT 851/032003-04-26 → 2003-05-08
    Seismic survey in progress until 07 may by M/V cgg alize towing eight 6000 meter long cables in area bound…
  21. HYDROLANT 850/032003-04-26 → 2003-04-29
    Seismic survey in progress until 290400Z apr by M/V tropicaliente towing five 6000 meter long cables in area…
  22. HYDROLANT 849/032003-04-26 → 2003-04-29
    Seismic survey in progress until 290259Z apr by M/V ramform viking towing ten 8400 meter long cables in area…
  23. HYDROLANT 844/032003-04-25 → 2003-04-28
    Seismic survey in progress until 280200Z apr by M/V cgg harmattan towing six 6000 meter long cables in area…
  24. HYDROLANT 833/032003-04-23 → 2003-04-26
    Seismic survey in progress until 260400Z apr by M/V tropicaliente towing five 6000 meter long cables in area…
  25. HYDROLANT 832/032003-04-23 → 2003-04-26
    Seismic survey in progress until 260259Z apr by M/V ramform viking towing ten 4600 meter long cables in area…
  26. HYDROLANT 829/032003-04-23 → 2003-04-25
    Seismic survey in progress until 262300Z apr by M/V cgg harmattan towing six 6000 meter long cables in area…
  27. HYDROLANT 828/032003-04-22 → 2003-04-26
    Seismic survey in progress until 25 apr by M/V cgg alize towing eight 6000 meter long cables in area bound…
  28. HYDROLANT 814/032003-04-21 → 2003-04-23
    Seismic survey in progress until 230259Z apr by M/V ramform viking towing ten 4600 meter long cables in area…
  29. HYDROLANT 801/032003-04-19 → 2003-04-21
    Seismic survey in progress until 240200Z apr by M/V cgg harmattan towing six 6000 meter long cables in area…
  30. HYDROLANT 799/032003-04-18 → 2003-04-22
    Seismic survey in progress until 25 apr by M/V cgg alize towing eight 6000 meter long cables in area bound…
  31. HYDROLANT 798/032003-04-18 → 2003-04-21
    Seismic survey in progress until 210259Z apr by M/V ramform viking towing ten 4600 meter long cables in area…
  32. HYDROLANT 797/032003-04-18 → 2003-04-18
    Seismic survey in progress until 190259Z apr by M/V cgg fohn towing six 7408 meter long cables in area bound…
  33. HYDROLANT 796/032003-04-18 → 2003-04-19
    Seismic survey in progress until 190200Z apr by M/V cgg harmattan towing six 6000 meter long cables in area…
  34. HYDROLANT 795/032003-04-18 → 2003-04-23
    Seismic survey in progress until 230400Z apr by M/V tropicalcaliente towing five 6000 meter long cables in…
  35. HYDROLANT 790/032003-04-17 → 2003-04-18
    Seismic survey in progress until 180200Z apr by M/V cgg harmattan towing six 6000 meter long cables in area…
  36. HYDROLANT 784/032003-04-16 → 2003-04-18
    Seismic survey in progress until 17 apr by M/V cgg alize towing eight 6000 meter long cables in area bound…
  37. HYDROLANT 780/032003-04-15 → 2003-04-16
    Seismic survey in progress until 160200Z apr by M/V cgg harmattan towing six 6000 meter long cables in area…
  38. HYDROLANT 779/032003-04-15 → 2003-04-18
    Seismic survey in progress until 180400Z apr by M/V tropicalcaliente towing five 6000 meter long cables in…
  39. HYDROLANT 778/032003-04-15 → 2003-04-18
    Seismic survey in progress until 180259Z apr by M/V ramform viking towing ten 4600 meter long cables in area…
  40. HYDROLANT 777/032003-04-15 → 2003-04-18
    Seismic survey in progress until 180259Z apr by M/V cgg fohn towing six 7408 meter long cables in area bound…
  41. HYDROLANT 768/032003-04-13 → 2003-04-16
    Seismic survey in progress until 15 apr by M/V cgg alize towing eight 6000 meter long cables in area bound…
  42. HYDROLANT 766/032003-04-12 → 2003-04-15
    Seismic survey in progress until 180100Z apr by M/V tropicalcaliente towing five 6000 meter long cables in…
  43. HYDROLANT 762/032003-04-12 → 2003-04-15
    Seismic survey in progress until 152300Z apr by M/V cgg harmattan towing six 6000 meter long cables in area…
  44. HYDROLANT 761/032003-04-12 → 2003-04-15
    Seismic survey in progress until 150300Z apr by M/V ramform viking towing ten 4600 meter long cables in area…
  45. HYDROLANT 760/032003-04-12 → 2003-04-15
    Seismic survey in progress until 150300Z apr by M/V cgg fohn towing six 7408 meter long cables in area bound…
  46. HYDROLANT 759/032003-04-12 → 2003-04-13
    Seismic survey in progress until 12 apr by M/V cgg alize towing eight 6000 meter long cables in area bound…
  47. HYDROLANT 747/032003-04-10 → 2003-04-12
    Seismic survey in progress until 122300Z apr by M/V cgg harmattan towing six 6000 meter long cables in area…
  48. HYDROLANT 746/032003-04-10 → 2003-04-12
    Seismic survey in progress until 150400Z apr by M/V tropicaliente towing five 6000 meter long cables in area…
  49. HYDROLANT 745/032003-04-10 → 2003-04-12
    Seismic survey 100300Z apr until further notice by M/V cgg alize towing eight 6000 meter long cables in area…
  50. HYDROLANT 736/032003-04-09 → 2003-04-10
    Seismic survey in progress until 101500Z apr by M/V cgg harmattan towing six 6000 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 67 · seahazards