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 · 18 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 227/072007-02-12 → 2007-02-23
    Seismic survey in progress until 230259Z feb by M/V cgg laurentian towing eight 6000 meter long cables in…
  2. HYDROLANT 224/072007-02-10 → 2007-02-12
    Seismic survey in progress until 121159Z feb by M/V cgg laurentian towing eight 6000 meter long cables in…
  3. HYDROLANT 223/072007-02-10 → 2007-02-23
    Seismic survey in progress until 230259Z feb by M/V rig supporter in area bound by 24-19.87S 044-07.98W,…
  4. HYDROLANT 217/072007-02-09 → 2007-02-12
    Seismic survey in progress until 120259Z feb by M/V western patriot towing eight 6000 meter long cables in…
  5. HYDROLANT 192/072007-02-04 → 2007-02-16
    Cable operations in progress until further notice by cableship teneo along trackline between 50-53.3S…
  6. HYDROLANT 181/072007-02-02 → 2007-02-09
    Seismic survey in progress until 150259Z feb by M/V western patriot in area bound by 24-38.7S 044-52.5W,…
  7. HYDROLANT 174/072007-01-31 → 2007-02-15
    Seismic survey in progress until 150259Z feb by M/V ramform valiant towing ten 6000 meter long cables in…
  8. HYDROLANT 129/072007-01-22 → 2007-01-23
    Seismic survey in progress until 230200Z jan by M/V cgg alize towing ten 6000 meter long cables in area…
  9. HYDROLANT 103/072007-01-18 → 2007-01-31
    Seismic survey in progress until 310259Z jan by M/V western patriot towing eight 6000 meter long cables in…
  10. HYDROLANT 97/072007-01-18 → 2007-01-31
    Seismic survey in progress until 310259Z jan by M/V ramform valiant towing ten 6000 meter long cables in…
  11. HYDROLANT 56/072007-01-11 → 2007-01-18
    Seismic survey in progress until 030300Z apr by M/V cgg amadeus towing eight 6500 meter long cables in area…
  12. HYDROLANT 51/072007-01-10 → 2007-01-17
    Seismic survey in progress until 170259Z jan by M/V ramform valiant towing ten 6000 meter long cables in…
  13. HYDROLANT 38/072007-01-07 → 2007-01-16
    Seismic survey in progress until 160259Z jan by M/V western patriot towing eight 6000 meter long cables in…
  14. HYDROLANT 33/072007-01-06 → 2007-01-10
    Seismic survey in progress until 100259Z jan by M/V ramform valiant towing ten 6000 meter long cables in…
  15. HYDROLANT 31/072007-01-06 → 2007-01-07
    Seismic survey in progress until 070259Z jan by M/V western patriot towing eight 6000 meter long cables in…
  16. HYDROLANT 9/072007-01-03 → 2007-01-05
    Seismic survey in progress until 050259Z jan by M/V western patriot towing eight 6000 meter long cables in…
  17. HYDROLANT 2324/062006-12-31 → 2007-01-11
    Seismic survey 030300Z jan 07 thru 030300Z apr 07 by M/V cgg amadeus towing 600 meter long cable in area…
  18. HYDROLANT 2321/062006-12-30 → 2007-01-03
    Seismic survey in progress until 130259Z jan 07 by M/V western patriot towing eight 6000 meter long cables…
  19. HYDROLANT 2314/062006-12-28 → 2007-01-05
    Seismic survey in progress until 050259Z jan 07 by M/V western patriot towing eight 6000 meter long cables…
  20. HYDROLANT 2312/062006-12-28 → 2007-01-05
    Seismic survey in progress until 050259Z jan 07 by M/V ramform valiant towing ten 6000 meter long cables in…
  21. HYDROLANT 2310/062006-12-28 → 2006-12-29
    Seismic survey in progress until 050259Z jan 07 by M/V cgg alize towing ten 6000 meter long cables in area…
  22. HYDROLANT 2274/062006-12-20 → 2007-02-01
    Seismic survey in progress until further notice by M/V geco triton towing ten 3.5 mile long cables in area…
  23. HYDROLANT 2255/062006-12-16 → 2006-12-28
    Seismic survey in progress until 280259Z dec by M/V cgg alize towing ten 6000 meter long cables in area…
  24. HYDROLANT 2254/062006-12-16 → 2006-12-28
    Seismic survey in progress until 280259Z dec by M/V western patriot towing eight 6000 meter long cables in…
  25. HYDROLANT 2252/062006-12-16 → 2006-12-28
    Seismic survey 172300Z thru 280259Z dec by M/V ramform valiant towing ten 6000 meter long cables in area…
  26. HYDROLANT 2231/062006-12-13 → 2006-12-16
    Seismic survey in progress until 160259Z dec by M/V ramform valiant towing ten 6000 meter long cables in…
  27. HYDROLANT 2218/062006-12-11 → 2006-12-16
    Seismic survey in progress until 220259Z dec by M/V alize towing ten 6000 meter long cables in area bound by…
  28. HYDROLANT 2214/062006-12-11 → 2006-12-11
    Seismic survey in progress until 220259Z dec by M/V cgg alize towing ten 6000 meter long cables in area…
  29. HYDROLANT 2213/062006-12-11 → 2006-12-16
    Seismic survey in progress until 160259Z dec by M/V western patriot towing eight 6000 meter long cables in…
  30. HYDROLANT 2207/062006-12-09 → 2006-12-16
    Seismic survey in progress until 160259Z dec by M/V ramform valiant towing ten 6000 meter long cables along…
  31. HYDROLANT 2205/062006-12-09 → 2006-12-11
    Seismic survey in progress until 160259Z dec by M/V cgg alize towing ten 6000 meter long cables in area…
  32. HYDROLANT 2189/062006-12-07 → 2006-12-11
    Seismic survey in progress until 160259Z dec by M/V western patriot towing eight 6000 meter long cables in…
  33. HYDROLANT 2172/062006-12-05 → 2006-12-09
    Seismic survey in progress until 090259Z dec by M/V cgg alize towing ten 6000 meter long cables in area…
  34. HYDROLANT 2154/062006-12-02 → 2006-12-20
    Seismic survey in progress until further notice by M/V geco triton towing ten 3.5 mile long cables in area…
  35. HYDROLANT 2152/062006-12-02 → 2006-12-05
    Seismic survey in progress until 050259Z dec by M/V cgg alize towing ten 6000 meter long cables in area…
  36. HYDROLANT 2145/062006-12-01 → 2006-12-02
    Seismic survey in progress until 090259Z dec by M/V cgg alize towing ten 6000 meter long cables along…
  37. HYDROLANT 2143/062006-12-01 → 2006-12-09
    Seismic survey in progress until 090259Z dec by M/V ramform valiant towing ten 6000 meter long cables along…
  38. HYDROLANT 2137/062006-11-30 → 2006-12-02
    Seismic survey in progress until further notice by M/V geco triton towing 6000 meter long cable in area…
  39. HYDROLANT 2126/062006-11-27 → 2006-11-29
    Seismic survey in progress until 290200Z nov by M/V cgg alize towing ten 6000 meter long cables in area…
  40. HYDROLANT 2121/062006-11-26 → 2006-11-27
    Seismic survey 260400Z to 290400Z nov by M/V cgg alize towing ten 6000 meter long cables in area bound by…
  41. HYDROLANT 2120/062006-11-25 → 2006-11-30
    Seismic survey 250300Z T0 300259Z nov by M/V ramform valiant towing ten 6000 meter long cables in area bound…
  42. HYDROLANT 2111/062006-11-23 → 2006-11-26
    Seismic survey in progress until 300259Z nov by M/V cgg alize towing ten 6000 meter long cables in area…
  43. HYDROLANT 2092/062006-11-19 → 2006-11-23
    Seismic survey in progress until 230259Z nov by M/V cgg alize towing ten 6000 meter long cables in area…
  44. HYDROLANT 2086/062006-11-18 → 2006-11-18
    Seismic survey in progress until 182300Z nov by M/V cgg alize towing ten 6000 meter long cables in area…
  45. HYDROLANT 2077/062006-11-16 → 2006-11-18
    Seismic survey in progress until 210259Z nov by M/V cgg alize towing ten 6000 meter long cables in area…
  46. HYDROLANT 2075/062006-11-16 → 2006-11-25
    Seismic survey in progress until 250259Z nov by M/V ramform valiant towing ten 6000 meter long cables in…
  47. HYDROLANT 2057/062006-11-12 → 2006-11-16
    Seismic survey in progress until 180259Z nov by M/V ramform valiant towing ten 6000 meter long cables in…
  48. HYDROLANT 2048/062006-11-10 → 2006-11-12
    Seismic survey in progess until 120259Z nov by M/V ramform valiant towing ten 6000 meter long cables in area…
  49. HYDROLANT 2043/062006-11-09 → 2006-11-10
    Seismic survey in progress until 150259Z nov by M/V ramform valiant towing ten 6000 meter long cables in…
  50. HYDROLANT 2033/062006-11-07 → 2006-11-09
    Seismic survey 071300Z to 090400Z nov by M/V ramform valiant towing ten 6000 meter long cables in area bound…

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 54 · seahazards