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 757/092009-04-24 → 2009-04-28
    Seismic survey 240300Z to 280259Z apr by M/V ocean surveyor towing 400 meter long cables in area bound by…
  2. HYDROLANT 752/092009-04-23 → 2009-04-28
    Seismic survey 230300Z to 280259Z apr by M/V ocean europe and M/V sanco star in area bound by 22-25.93S…
  3. HYDROLANT 751/092009-04-22 → 2009-05-19
    Seismic survey in progress until further notice by M/V crest diamond in area bound by 06-27S 012-15E, 06-27S…
  4. HYDROLANT 749/092009-04-22 → 2009-04-28
    Seismic survey 220300Z to 280259Z apr by M/V ramform sovereing towing 14 8100 meter long cables in area…
  5. HYDROLANT 741/092009-04-20 → 2009-04-24
    Seismic survey by M/V discoverer: a. 20 and 21 apr in area bound by 29-25S 045-30W, 29-20S 045-25W, 28-15S…
  6. HYDROLANT 736/092009-04-20 → 2009-04-20
    Seismic survey by M/V discoverer: a. 20 and 21 apr in area bound by 29-25S 045-30W, 29-20S 045-25W, 28-15S…
  7. HYDROLANT 735/092009-04-20 → 2009-04-26
    Seismic survey in progress until 25 apr by M/V ramform valiant towing ten 8100 meter long cables in area…
  8. HYDROLANT 733/092009-04-20 → 2009-04-24
    Seismic survey 200300Z to 240259Z apr by M/V ocean surveyor towing 400 meter long cable in area bound by…
  9. HYDROLANT 718/092009-04-17 → 2009-04-20
    Seismic survey 170300Z to 200259Z apr by M/V ocean surveyor towing 400 meter long cables in area bound by…
  10. HYDROLANT 717/092009-04-17 → 2009-04-23
    Seismic survey 170300Z to 230259Z apr by M/V ocean europe and M/V sanco star in area bound by 22-25.93S…
  11. HYDROLANT 713/092009-04-16 → 2009-04-17
    Seismic survey in progress until 16 apr by M/V discoverer in area bound by 30-00S 045-45W, 29-25S 045-30W,…
  12. HYDROLANT 712/092009-04-16 → 2009-04-22
    Seismic survey 160300Z to 220259Z apr by M/V ramform sovereing towing 14 8100 meter long cables in area…
  13. HYDROLANT 701/092009-04-14 → 2009-04-17
    Seismic survey 140300Z to 170259Z apr by M/V ocean europe and M/V sanco star in area bound by 22-25.93S…
  14. HYDROLANT 692/092009-04-12 → 2009-04-17
    Seismic survey in progress until 162359Z apr by M/V ramform valiant towing ten 8100 meter long cables in…
  15. HYDROLANT 689/092009-04-11 → 2009-04-12
    Seismic survey in progress until 16 apr by M/V ramform valiant towing ten 8100 meter long cables in area…
  16. HYDROLANT 688/092009-04-11 → 2009-04-16
    Seismic survey by M/V discoverer: a. 13 and 14 apr in area bound by 30-25S 045-30W, 30-35S 045-30W, 30-40S…
  17. HYDROLANT 681/092009-04-10 → 2009-04-11
    Seismic survey in progress until 15 apr by M/V ramform valiant towing ten 8100 meter long cables in area…
  18. HYDROLANT 680/092009-04-10 → 2009-04-11
    Seismic survey in progress until 16 apr by M/V discoverer in area bound by 27-25S 047-05W, 27-20S 047-05W,…
  19. HYDROLANT 672/092009-04-09 → 2009-04-16
    Seismic survey 090300Z to 160259Z apr by M/V ramform sovereing towing 14 8100 meter long cables in area…
  20. HYDROLANT 671/092009-04-09 → 2009-04-17
    Seismic survey 100300Z to 170259Z apr by M/V ocean surveyor towing 400 meter long cables in area bound by…
  21. HYDROLANT 660/092009-04-07 → 2009-04-10
    Seismic survey by M/V discoverer: a. 05 apr in area bound by 27-25S 047-05W, 27-20S 047-15W, 27-10S 048-00W,…
  22. HYDROLANT 659/092009-04-07 → 2009-04-10
    Seismic survey in progress until 13 apr by M/V ramform valiant towing ten 8100 meter long cables in area…
  23. HYDROLANT 646/092009-04-04 → 2009-04-09
    Seismic survey in progress until 090259Z apr by M/V ramform sovereing towing 14 8100 meter long cables in…
  24. HYDROLANT 644/092009-04-03 → 2009-04-16
    Submarine cable operations 06 thru 15 apr by M/V lars grael in area bound by 11-00.72S 037-04.68W, 11-00.70S…
  25. HYDROLANT 642/092009-04-03 → 2009-04-14
    Seismic survey 030300Z to 140259Z apr by M/V ocean europe and M/V sanco star in area bound by 22-25.93S…
  26. HYDROLANT 626/092009-04-01 → 2009-04-03
    Seismic survey 010300Z to 030259Z apr by M/V ocean surveyor towing 300 meter long cables in area bound by…
  27. HYDROLANT 620/092009-03-31 → 2009-04-02
    Seismic survey by M/V discoverer: a. 31 mar in area bound by 29-00S 048-50W, 28-55S 048-45W, 29-30S 048-00W,…
  28. HYDROLANT 619/092009-03-31 → 2009-04-06
    Seismic survey 31 mar thru 05 apr by M/V ramform valiant towing ten 8100 meter long cables in area bound by…
  29. HYDROLANT 604/092009-03-28 → 2009-04-03
    Seismic survey 010300Z to 040259Z apr by M/V sanco star in area bound by 22-22.72S 039-57.13W, 22-27.43S…
  30. HYDROLANT 594/092009-03-27 → 2009-03-31
    Seismic survey by M/V discoverer: a. 27 mar in area bound by 32-45S 047-50W, 32-35S 047-45W, 32-20S 046-50W,…
  31. HYDROLANT 591/092009-03-25 → 2009-04-01
    Seismic survey 270300Z mar to 010259Z apr by M/V sanco star in area bound by 22-25.93S 040-17.17W, 22-37.05S…
  32. HYDROLANT 590/092009-03-25 → 2009-04-01
    Seismic survey 270300Z mar to 010259Z apr by M/V ocean europe in area bound by 22-25.93S 040-17.17W,…
  33. HYDROLANT 582/092009-03-25 → 2009-04-04
    Seismic survey in progress until 040259Z apr by M/V ramform sovereing towing four 8100 meter long cables in…
  34. HYDROLANT 576/092009-03-24 → 2009-04-01
    Seismic survey 250300Z mar to 010259Z apr by M/V ocean surveyor in area bound by 19-48.3S 039-50.5W,…
  35. HYDROLANT 572/092009-03-23 → 2009-03-27
    Seismic survey by M/V discoverer: a. 23 mar in area bound by 32-30S 046-30W, 32-25S 046-25W, 31-30S 048-15W,…
  36. HYDROLANT 571/092009-03-23 → 2009-03-29
    Seismic survey 23 thru 28 mar by M/V ramform valiant towing ten 1000 meter long cables in area bound by…
  37. HYDROLANT 553/092009-03-20 → 2009-03-25
    Seismic survey in progress until 250259Z mar by M/V ramform sovereing towing 14 8100 meter long cables in…
  38. HYDROLANT 551/092009-03-20 → 2009-03-23
    Seismic survey by M/V discoverer: a. 20 mar in area bound by 34-25S 046-25W, 34-20S 046-15W, 34-40S 045-00W,…
  39. HYDROLANT 550/092009-03-20 → 2009-03-23
    Seismic survey 21 thru 28 mar by M/V ramform valiant towing ten 8100 meter long cables in area bound by…
  40. HYDROLANT 536/092009-03-18 → 2009-03-21
    Seismic survey in progress until 20 mar by M/V ramform valiant towing ten 8100 meter long cables in area…
  41. HYDROLANT 517/092009-03-15 → 2009-03-20
    Seismic survey in progress by M/V discoverer: a. 14 mar in area bound by 33-15S 051-20W, 33-10S 051-10W,…
  42. HYDROLANT 513/092009-03-14 → 2009-03-18
    Seismic survey in progress until 20 mar by M/V ramform valiant towing ten 8100 meter long cables in area…
  43. HYDROLANT 507/092009-03-13 → 2009-03-25
    Seismic survey 150001Z mar to 012359Z apr by M/V sanco star in area bound by 22-23.55S 040-03.03W, 22-13.03S…
  44. HYDROLANT 506/092009-03-13 → 2009-03-25
    Seismic survey 150001Z mar to 012359Z apr by M/V ocean europe in area bound by 22-23.55S 040-03.03W,…
  45. HYDROLANT 505/092009-03-13 → 2009-03-24
    Seismic survey 150300Z mar to 150259Z apr by M/V ocean surveyor in area bound by 22-28.22S 040-50.98W,…
  46. HYDROLANT 495/092009-03-12 → 2009-03-16
    Seismic survey in progress by M/V discoverer: a. 12 mar in area bound by 34-50S 050-10W, 35-20S 049-10W,…
  47. HYDROLANT 482/092009-03-10 → 2009-03-20
    Seismic survey 100300Z to 200259Z mar by M/V ramform sovereing towing 14 8100 meter long cables in area…
  48. HYDROLANT 480/092009-03-10 → 2009-03-14
    Seismic survey 100300Z to 200259Z mar by M/V ramform valiant towing ten 8100 meter long cables in area bound…
  49. HYDROLANT 463/092009-03-07 → 2009-03-12
    Seismic survey in progress until 11 mar by M/V discoverer in area bound by 35-30S 050-00W, 35-20S 049-50W,…
  50. HYDROLANT 461/092009-03-07 → 2009-03-07
    Seismic survey in progress until 28 mar by M/V discoverer in area bound by 33-32S 052-36W, 33-56S 052-26W,…

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 42 · seahazards