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 1105/092009-06-16 → 2009-06-18
    Seismic survey in progress until 17 jun by M/V discoverer towing 10000 meter long cables in area bound by…
  2. HYDROLANT 1080/092009-06-11 → 2009-06-17
    Seismic survey in progress until 16 jun by M/V ramform valiant towing ten 8100 meter long cables in area…
  3. HYDROLANT 1077/092009-06-11 → 2009-06-15
    Seismic survey by M/V discoverer towing 10000 meter long cables: a. in progress until 12 jun in area bound…
  4. HYDROLANT 1071/092009-06-10 → 2009-06-19
    Seismic survey in progress until 190259Z jun by M/V ocean europe in area bound by 22-23.55S 040-03.03W,…
  5. HYDROLANT 1069/092009-06-10 → 2009-06-11
    Seismic survey in progress until 130259Z jun by M/V discoverer in area bound by 19-52S 037-28W, 19-54S…
  6. HYDROLANT 1068/092009-06-10 → 2009-06-19
    Seismic survey in progress until 190259Z jun by M/V western neptune towing 12 3.5 mile long cables in area…
  7. HYDROLANT 1064/092009-06-09 → 2009-06-19
    Seismic survey in progress until 190259Z jun by M/V ocean surveyor towing 400 meter long cables in area…
  8. HYDROLANT 1036/092009-06-05 → 2009-06-20
    Seismic survey in progress until 20 jun by M/V toisa vigilante in areas bound by a. 02-56.43S 037-38.05W,…
  9. HYDROLANT 1035/092009-06-05 → 2009-06-05
    Seismic survey in progress until 200259Z jun by M/V toisa vigilante in areas bound by a. 02-56.43S…
  10. HYDROLANT 1028/092009-06-04 → 2009-06-10
    Seismic survey in progress until 100259Z jun by M/V falcon explorer towing 12500 meter long cable in area…
  11. HYDROLANT 1027/092009-06-04 → 2009-06-09
    Seismic survey in progress until 090259Z jun by M/V discoverer in area bound by 22-00.00S 040-56.00W,…
  12. HYDROLANT 1026/092009-06-04 → 2009-06-16
    Seismic survey in progress until 160259Z jun by M/V ramform sovereing and M/V rig supporter towing 14 8100…
  13. HYDROLANT 983/092009-05-29 → 2009-06-09
    Seismic survey 29 may thru 08 jun by M/V ramform valiant towing ten 8100 meter long cables in area bound by…
  14. HYDROLANT 982/092009-05-28 → 2009-06-04
    Seismic survey in progress until 040259Z jun by M/V ramform sovereing and M/V rig supporter towing 14 8100…
  15. HYDROLANT 981/092009-05-28 → 2009-06-04
    Seismic survey in progress until 040259Z jun by M/V ocean surveyor towing 400 meter long cables in area…
  16. HYDROLANT 980/092009-05-28 → 2009-06-04
    Seismic survey in progress until 040259Z jun by M/V western neptune towing 12 3.5 mile long cables in area…
  17. HYDROLANT 979/092009-05-28 → 2009-06-04
    Seismic survey in progress until 040259Z jun by M/V ocean europe and M/V sanco star in area bound by…
  18. HYDROLANT 966/092009-05-26 → 2009-05-28
    Seismic survey 260300Z to 280259Z may by M/V discoverer in area bound by 22-00.00S 040-56.00W, 21-57.00S…
  19. HYDROLANT 954/092009-05-24 → 2009-05-01
    Seismic survey 24 thru 31 may by M/V ramform valiant towing ten 8100 meter long cables in area bound by…
  20. HYDROLANT 947/092009-05-23 → 2009-05-28
    Seismic survey in progress until 280259Z may by M/V ramform sovereing towing 14 8100 meter long cables in…
  21. HYDROLANT 946/092009-05-23 → 2009-05-26
    Seismic survey in progress until 260259Z may by M/V falcon explorer towing 12500 meter long cable in area…
  22. HYDROLANT 932/092009-05-22 → 2009-05-28
    Seismic survey 230300Z to 280259Z may by M/V ocean surveyor towing 400 meter long cables in area bound by…
  23. HYDROLANT 926/092009-05-21 → 2009-05-28
    Seismic survey 210300Z to 280259Z may by M/V rig supporter with submersible in area bound by 24-53.05S…
  24. HYDROLANT 925/092009-05-20 → 2009-05-28
    Seismic survey in progress until 280259Z may by M/V ocean europe and M/V sanco star in area bound by…
  25. HYDROLANT 919/092009-05-19 → 2009-08-22
    Seismic survey in progress until further notice by M/V crest diamond in area bound by 06-55S 012-26E, 06-55S…
  26. HYDROLANT 899/092009-05-15 → 2009-05-23
    Seismic survey 150300Z to 230259Z may by M/V ramform sovereing towing 14 8100 meter long cables in area…
  27. HYDROLANT 898/092009-05-15 → 2009-05-24
    Seismic survey in progress until 23 may by M/V ramform valiant towing ten 8100 meter long cables in area…
  28. HYDROLANT 896/092009-05-15 → 2009-05-21
    Seismic survey 150300Z to 210259Z may by M/V rig supporter with submersible in area bound by 24-53.05S…
  29. HYDROLANT 888/092009-05-14 → 2009-05-20
    Seismic survey 130300Z to 200259Z may by M/V ocean europe and M/V sanco star in area bound by 22-23.55S…
  30. HYDROLANT 887/092009-05-14 → 2009-05-19
    Seismic survey in progress until 190259Z may by M/V ocean surveyor in area bound by 21-16.10S 040-25.70W,…
  31. HYDROLANT 879/092009-05-14 → 2009-05-14
    Seismic survey 130300Z to 200259Z may by M/V sanco star in area bound by 22-23.55S 040-03.03W, 22-11.20S…
  32. HYDROLANT 854/092009-05-09 → 2009-05-15
    Seismic survey 090300Z to 150259Z may by M/V ramform sovereing towing 14 8100 meter long cables in area…
  33. HYDROLANT 853/092009-05-09 → 2009-05-15
    Seismic survey 090300Z to 150259Z may by M/V rig supporter with submersible in area bound by 24-53.05S…
  34. HYDROLANT 850/092009-05-08 → 2009-05-15
    Seismic survey in progress until 15 may by M/V ramform valiant towing ten 8100 meter long cables in area…
  35. HYDROLANT 849/092009-05-08 → 2009-05-13
    Seismic survey by M/V discoverer: a. 08 may in area bound by 25-25S 047-25W, 25-25S 047-35W, 26-05S 048-20W,…
  36. HYDROLANT 845/092009-05-07 → 2009-05-13
    Seismic survey 070300Z to 130259Z may by M/V ocean europe and M/V sanco star in area bound by 22-23.55S…
  37. HYDROLANT 835/092009-05-06 → 2009-05-09
    Seismic survey 060300Z to 090259Z may by M/V ramform sovereing towing 14 8100 meter long cables in area…
  38. HYDROLANT 833/092009-05-05 → 2009-05-07
    Seismic survey by M/V discoverer: a. 05 may in area bound by 27-30S 045-45W, 27-25S 045-45W, 26-25S 045-05W,…
  39. HYDROLANT 826/092009-05-05 → 2009-05-27
    Seismic survey in progress until further notice by M/V ramform challenger towing 12 5100 meter long cables…
  40. HYDROLANT 813/092009-05-02 → 2009-05-06
    Seismic survey 020300Z to 060259Z may by M/V ramform sovereing towing 14 8100 meter long cables in area…
  41. HYDROLANT 803/092009-05-01 → 2009-05-03
    Seismic survey by M/V discoverer: a. 01 may in area bound by 27-30S 045-45W, 27-25S 045-45W, 26-25S 045-05W,…
  42. HYDROLANT 802/092009-05-01 → 2009-05-08
    Seismic survey 01 thru 07 may by M/V ramform valiant towing ten 8100 meter long cables in area bound by…
  43. HYDROLANT 801/092009-05-01 → 2009-05-02
    Seismic survey 010300Z to 020259Z may by M/V ramform sovereing towing 14 8100 meter long cables in area…
  44. HYDROLANT 800/092009-05-01 → 2009-05-09
    Seismic survey 020300Z to 090259Z may by M/V rig supporter with submersible in area bound by 25-10.3S…
  45. HYDROLANT 798/092009-05-01 → 2009-05-07
    Seismic survey 010300Z to 070259Z may by M/V ocean europe and M/V sanco star in area bound by 22-25.93S…
  46. HYDROLANT 782/092009-04-28 → 2009-05-01
    Seismic survey 280300Z apr to 010259Z may by M/V ocean surveyor towing 400 meter long cables in area bound…
  47. HYDROLANT 781/092009-04-28 → 2009-05-01
    Seismic survey 280300Z apr to 010259Z may by M/V ocean europe and M/V sanco star in area bound by 22-25.93S…
  48. HYDROLANT 779/092009-04-28 → 2009-04-30
    Seismic survey 28 thru 29 apr by M/V ramform sovereing towing 14 8100 meter long cables in area bound by…
  49. HYDROLANT 767/092009-04-25 → 2009-04-30
    Seismic survey in progress until 29 apr by M/V discoverer in area bound by 27-20S 047-00W, 27-20S 046-50W,…
  50. HYDROLANT 766/092009-04-25 → 2009-05-01
    Seismic survey in progress until 01 may by M/V ramform valiant towing ten 8100 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 41 · seahazards