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 451/092009-03-06 → 2009-03-07
    Seismic survey in progress until 070300Z mar by M/V discoverer in area bound by 33-32S 052-36W, 33-56S…
  2. HYDROLANT 442/092009-03-05 → 2009-03-06
    Seismic survey 050300Z to 060300Z mar by M/V discoverer in area bound by 33-32S 052-36W, 33-56S 052-26W,…
  3. HYDROLANT 436/092009-03-04 → 2009-04-01
    Pipeline operations 051100Z mar to 012100Z apr by M/V normand seven in area bound by 22-38.28S 040-27.48W,…
  4. HYDROLANT 429/092009-03-03 → 2009-04-24
    Seismic survey in progress until 31 dec by M/V geo pacific towing eight 6000 meter long cables in area bound…
  5. HYDROLANT 427/092009-03-03 → 2009-03-10
    Seismic survey 030300Z to 100259Z mar by M/V ramform valiant towing ten 8100 meter long cables in area bound…
  6. HYDROLANT 426/092009-03-03 → 2009-03-10
    Seismic survey 030300Z to 100259Z mar by M/V ramform sovereing towing 14 8100 meter long cables in area…
  7. HYDROLANT 425/092009-03-03 → 2009-03-04
    Seismic survey 030300Z to 040300Z mar by M/V discoverer in area bound by 35-10S 049-59W, 35-25S 050-11W,…
  8. HYDROLANT 419/092009-03-02 → 2009-03-03
    Seismic survey in progress until 030300Z mar by M/V discoverer in area bound by 33-46S 052-40W, 33-36S…
  9. HYDROLANT 415/092009-03-01 → 2009-03-02
    Seismic survey 010359Z to 020259Z mar by M/V discoverer in area bound by 33-46S 052-40W, 33-36S 052-25W,…
  10. HYDROLANT 411/092009-02-28 → 2009-03-01
    Seismic survey 280400Z feb to 010259Z mar by M/V discoverer in area bound by 32-53S 050-21W, 33-00S 050-06W,…
  11. HYDROLANT 394/092009-02-25 → 2009-04-11
    Pipeline operations in progress until further notice by M/V barge gastro 2 along trackline between 06-52.2S…
  12. HYDROLANT 380/092009-02-24 → 2009-03-01
    Seismic survey by M/V discoverer: a. 24 feb in area bound by 29-54S 047-22W, 29-57S 047-18W, 31-31S 047-33W,…
  13. HYDROLANT 378/092009-02-24 → 2009-02-24
    Seismic survey by M/V discoverer: a. 23 feb in area bound by 28-09S 046-01W, 28-15S 045-41W, 29-34S 047-19W,…
  14. HYDROLANT 364/092009-02-22 → 2009-02-24
    Seismic survey by M/V discoverer: a. 22 feb in area bound by 27-37S 045-24W, 27-41S 046-38W, 29-04S 046-38W,…
  15. HYDROLANT 359/092009-02-21 → 2009-03-03
    Seismic survey in progress until 030259Z mar by M/V ramform sovereing towing 14 8100 meter long cables in…
  16. HYDROLANT 355/092009-02-21 → 2009-03-03
    Seismic survey in progress until 030259Z mar by M/V ramform valiant towing ten 8100 meter long cables in…
  17. HYDROLANT 354/092009-02-21 → 2009-02-24
    Seismic survey in progress until 23 feb by M/V discoverer in area bound by 26-32S 044-36W, 26-39S 044-23W,…
  18. HYDROLANT 341/092009-02-18 → 2009-02-21
    Seismic survey in progress until 210259Z feb by M/V ramform sovereing towing 14 8100 meter long cables in…
  19. HYDROLANT 340/092009-02-18 → 2009-05-05
    Seismic survey in progress until further notice by M/V ramform challenger towing 12 3600 meter long cables…
  20. HYDROLANT 322/092009-02-15 → 2009-02-17
    Seismic survey in progress until 200359Z feb by M/V discoverer in area bound by 33-50S 044-00W, 33-43S…
  21. HYDROLANT 320/092009-02-14 → 2009-02-21
    Seismic survey in progress until 210259Z feb by M/V ramform valiant towing ten 8100 meter long cables in…
  22. HYDROLANT 316/092009-02-14 → 2009-02-17
    Seismic survey in progress until further notice by M/V geo searcher towing 10700 meter long cables along…
  23. HYDROLANT 312/092009-02-13 → 2009-02-16
    Seismic survey by M/V discoverer: a. 13 and 14 feb in area bound by 34-52S 041-58W, 34-43S 041-52W, 33-47S…
  24. HYDROLANT 311/092009-02-13 → 2009-02-14
    Seismic survey in progress until further notice by M/V geo searcher towing 10700 meter long cables along…
  25. HYDROLANT 282/092009-02-10 → 2009-02-18
    Seismic survey from 100200Z to 180259Z feb by M/V ramform sovereing towing 14 8100 meter long cables in area…
  26. HYDROLANT 281/092009-02-10 → 2009-02-16
    Seismic survey by M/V discoverer: a. 12 feb in area bound by 34-52S 041-58W, 34-43S 041-52W, 33-47S 043-51W,…
  27. HYDROLANT 274/092009-02-09 → 2009-02-13
    Seismic survey in progress until further notice by M/V geo searcher towing 10700 meter long cables along…
  28. HYDROLANT 269/092009-02-08 → 2009-02-09
    Seismic survey in progress until further notice by M/V geo searcher towing 10700 meter long cables vicinity…
  29. HYDROLANT 267/092009-02-07 → 2009-02-10
    Seismic survey 08 and 09 feb by M/V discoverer in area bound by 29-57S 045-28W, 30-08S 045-36W, 31-12S…
  30. HYDROLANT 243/092009-02-05 → 2009-02-14
    Seismic survey 050200Z thru 140259Z feb by M/V ramform valiant towing ten 8100 meter long cables in area…
  31. HYDROLANT 242/092009-02-05 → 2009-02-10
    Seismic survey in progress until 100259Z feb by M/V ramform sovereing towing 14 8100 meter long cables in…
  32. HYDROLANT 239/092009-02-04 → 2009-02-18
    Seismic survey in progress until further notice by M/V ramform challenger towing 12 6000 meter long cables…
  33. HYDROLANT 233/092009-02-04 → 2009-02-06
    Seismic survey in progress until 05 feb by M/V discoverer in area bound by 31-44S 045-45W, 31-51S 045-34W,…
  34. HYDROLANT 225/092009-02-03 → 2009-02-10
    2300 meter long seismic cables adrift in 25-04S 042-27W
  35. HYDROLANT 213/092009-01-31 → 2009-02-08
    Seismic survey in progress until further notice by M/V geo searcher towing 10700 meter long cables vicinity…
  36. HYDROLANT 207/092009-01-30 → 2009-01-31
    Seismic survey in progress until further notice by M/V geo searcher towing 10700 meter long cables vicinity…
  37. HYDROLANT 197/092009-01-30 → 2009-02-04
    Seismic survey 300200Z jan to 040259Z feb by M/V ramform sovereign towing 14 8100 meter long cables in area…
  38. HYDROLANT 191/092009-01-28 → 2009-02-01
    Seismic survey in progress until 31 jan by M/V discoverer in area bound by 33-46S 048-33W, 34-52S 048-20W,…
  39. HYDROLANT 185/092009-01-27 → 2009-02-02
    Seismic survey 270200Z jan to 020259Z feb by M/V ramform valiant towing ten 8100 meter long cables in area…
  40. HYDROLANT 158/092009-01-24 → 2009-01-30
    Seismic survey in progress until 300259Z jan by M/V ramform sovereign towing 14 8100 meter long cables in…
  41. HYDROLANT 150/092009-01-23 → 2009-01-24
    Seismic survey in progress until further notice by M/V geo searcher towing 10700 meter long cables in…
  42. HYDROLANT 144/092009-01-22 → 2009-01-23
    Seismic survey in progress until further notice by M/V geo searcher towing 10700 meter long cables along…
  43. HYDROLANT 137/092009-01-22 → 2009-01-27
    Seismic survey 220200Z to 270259Z jan by M/V ramform valiant towing ten 8100 meter long cables in area bound…
  44. HYDROLANT 134/092009-01-21 → 2009-01-22
    Seismic survey in progress until further notice by M/V geo searcher towing 11,000 meter long cables vicinity…
  45. HYDROLANT 129/092009-01-20 → 2009-01-21
    Seismic survey in progress until further notice by M/V geo searcher towing 11,000 meter cables vicinity…
  46. HYDROLANT 124/092009-01-20 → 2009-01-24
    Seismic survey 200300Z to 240259Z jan by M/V ramform sovereign towing 14 8100 meter long cables in area…
  47. HYDROLANT 121/092009-01-20 → 2009-01-22
    Seismic survey in progress until 220259Z jan by M/V ramform valiant towing ten 8100 meter long cables in…
  48. HYDROLANT 88/092009-01-16 → 2009-01-22
    Seismic survey in progress until 220259Z jan by M/V rig supporter with submersible in area bound by 25-10.3S…
  49. HYDROLANT 74/092009-01-13 → 2009-01-20
    Seismic survey 130300Z to 200259Z jan by M/V ramform sovereing towing 14 8100 meter long cables in area…
  50. HYDROLANT 61/092009-01-10 → 2009-01-16
    Seismic survey 100200Z to 160259Z jan by M/V rig supporter with submersible in area bound by 25-10.3S…

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 43 · seahazards