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 60/092009-01-10 → 2009-01-19
    Seismic survey 100200Z to 190259Z jan by M/V ramform valiant towing ten 8100 meter long cables in area bound…
  2. HYDROLANT 53/092009-01-09 → 2009-01-10
    Seismic survey in progress until further notice by M/V geo searcher towing 11,000 meter long cables along…
  3. HYDROLANT 36/092009-01-06 → 2009-01-09
    Seismic survey in progress until further notice by M/V geo searcher towing 11,000 meter long cables along…
  4. HYDROLANT 19/092009-01-04 → 2009-01-06
    Seismic survey in progress until further notice by M/V geo searcher towing 11000 meter long cable along…
  5. HYDROLANT 15/092009-01-03 → 2009-01-04
    Seismic survey in progress until further notice by M/V geo searcher towing 11000 meter long cable along…
  6. HYDROLANT 13/092009-01-03 → 2009-01-06
    Seismic survey 030200Z to 100259Z jan by M/V rig supporter with submersible in area bound by 25-10.3S…
  7. HYDROLANT 11/092009-01-03 → 2009-01-10
    Seismic survey 030200Z to 100259Z jan by M/V ramform valiant towing ten 8100 meter long cables in area bound…
  8. HYDROLANT 2/092009-01-01 → 2009-01-03
    Seismic survey 010300Z to 030259Z jan by M/V ramform valiant towing ten 8100 meter long cables in area bound…
  9. HYDROLANT 2273/082008-12-31 → 2009-01-03
    Seismic survey 310200Z dec to 030159Z jan 09 by M/V rig supporter with submersible in area bound by 25-10.3S…
  10. HYDROLANT 2271/082008-12-30 → 2009-01-10
    Submarine cable operations 02 thru 09 jan 09 by M/V lars grael in area bound by 11-00.43S 037-03.73W,…
  11. HYDROLANT 2267/082008-12-30 → 2009-01-03
    Seismic survey in progress until further notice by M/V geo searcher towing 11000 meter long cable along…
  12. HYDROLANT 2251/082008-12-27 → 2008-12-31
    Seismic survey 270200Z to 310159Z dec by M/V rig supporter with submersible in area bound by 25-10.3S…
  13. HYDROLANT 2250/082008-12-27 → 2009-01-01
    Seismic survey 270300Z dec to 010259Z jan 09 by M/V ramform valiant towing ten 8100 meter long cables in…
  14. HYDROLANT 2246/082008-12-26 → 2008-12-27
    Seismic survey in progress until further notice by M/V geo searcher towing 11000 meter long cable vicinity…
  15. HYDROLANT 2243/082008-12-25 → 2008-12-26
    Seismic survey in progress until further notice by M/V geo searcher towing 11000 meter long cable vicinity…
  16. HYDROLANT 2233/082008-12-23 → 2008-12-26
    Seismic survey in progress until 260159Z dec by M/V rig supporter with submersible in area bound by 25-10.3S…
  17. HYDROLANT 2224/082008-12-22 → 2008-12-25
    Seismic survey in progress until further notice by M/V geo searcher towing 11000 meter long cable vicinity…
  18. HYDROLANT 2208/082008-12-20 → 2008-12-26
    Seismic survey 190300Z to 260259Z dec by M/V ramform valiant towing 12 6500 meter long cables in area bound…
  19. HYDROLANT 2191/082008-12-18 → 2008-12-20
    Seismic survey in progress until further notice by M/V geo searcher towing 11000 meter long cables along…
  20. HYDROLANT 2189/082008-12-18 → 2008-12-22
    Seismic survey 180300Z to 220259Z dec by M/V rig supporter with submersible in area bound by 25-10.3S…
  21. HYDROLANT 2143/082008-12-13 → 2009-01-13
    Seismic survey 130300Z dec to 130259Z jan 09 by M/V ramform sovereing towing 14 8100 meter long cables in…
  22. HYDROLANT 2142/082008-12-13 → 2009-01-30
    Seismic survey in progress until 202359Z apr 09 by M/V polar queen in area bound by 21-51S 039-43W, 22-51S…
  23. HYDROLANT 2136/082008-12-12 → 2008-12-13
    Seismic survey in progress until 20 apr 09 by M/V polar queen in area bound by 21-51S 039-43W, 22-51S…
  24. HYDROLANT 2135/082008-12-12 → 2008-12-18
    Seismic survey 120300Z T0 180259Z dec by M/V rig supporter with submersible in area bound by 25-10.3S…
  25. HYDROLANT 2133/082008-12-12 → 2008-12-18
    Seismic survey 120300Z T0 180259Z dec by M/V ramform valiant towing 12 6500 meter long cables in area bound…
  26. HYDROLANT 2117/082008-12-09 → 2008-12-19
    Submarine cable operations 12 thru 18 dec by M/V lars grael in area bound by 11-00.43S 037-03.73W, 11-00.83S…
  27. HYDROLANT 2116/082008-12-09 → 2008-12-14
    Seismic survey 090300Z to 140259Z dec by M/V western patriot towing 12 6500 meter long cables in area bound…
  28. HYDROLANT 2096/082008-12-05 → 2008-12-20
    Pipe laying operations 051000Z to 202200Z dec by M/V maersk assister along trackline between 23-41.85S…
  29. HYDROLANT 2093/082008-12-05 → 2008-12-12
    Seismic survey 050359Z to 120259Z dec by M/V rig supporter with submersible in area bound by 25-10.3S…
  30. HYDROLANT 2092/082008-12-05 → 2008-12-12
    Seismic survey 050359Z to 120259Z dec by M/V ramform valiant towing 12 6500 meter long cable in area bound…
  31. HYDROLANT 2056/082008-11-27 → 2008-12-13
    Seismic survey in progress until 130259Z dec by M/V ramform sovereing towing 14 8100 meter long cables in…
  32. HYDROLANT 2055/082008-11-27 → 2008-12-05
    Seismic survey in progress until 050259Z dec by M/V ramform valiant towing 12 6500 meter long cables in area…
  33. HYDROLANT 2054/082008-11-27 → 2008-12-05
    Seismic survey in progress until 050259Z dec by M/V rig supporter with submersible in area bound by 24-18.3S…
  34. HYDROLANT 2051/082008-11-27 → 2008-11-27
    Seismic survey 270300Z nov to 050259Z dec by M/V ramform sovereign towing 12 6500 meter long cables in area…
  35. HYDROLANT 2050/082008-11-26 → 2009-02-04
    Seismic survey in progress until further notice by M/V ramform challenger towing 12 6000 meter long cables…
  36. HYDROLANT 2043/082008-11-26 → 2008-11-30
    Submarine cable operations 27 thru 29 nov by M/V ahts larsgrael along trackline between 11-03.68S 037-02.43W…
  37. HYDROLANT 2021/082008-11-23 → 2008-11-27
    Seismic survey in progress until 270259Z nov by M/V rig supporter with submersible in area bound by 24-18.3S…
  38. HYDROLANT 2002/082008-11-20 → 2008-11-27
    Seismic survey 211300Z to 270259Z nov by M/V ramform valiant towing 12 6500 meter long cables in area bound…
  39. HYDROLANT 1985/082008-11-17 → 2008-11-18
    Seismic survey in progress until 180159Z nov by M/V discoverer in area bound by 26-23S 044-08W, 26-23S…
  40. HYDROLANT 1974/082008-11-15 → 2008-11-22
    Two 8000 meter long seismic survey cables adrift in 24-54S 042-28W at 150130Z nov
  41. HYDROLANT 1952/082008-11-13 → 2008-11-20
    3500 meter long seismic survey cable adrift vicinity 26-07S 040-25W at 120610Z nov
  42. HYDROLANT 1946/082008-11-13 → 2008-11-20
    Seismic survey 130300Z to 200259Z nov by M/V ramform valiant towing 12 6500 meter long cables in area bound…
  43. HYDROLANT 1945/082008-11-13 → 2008-11-27
    Seismic survey 130259Z nov to 130259Z dec by M/V ramform sovereign towing 14 8100 meter long cables in area…
  44. HYDROLANT 1944/082008-11-13 → 2008-11-17
    Seismic survey by M/V discoverer in progress until 16 nov in area bound by 26-23S 044-08W, 26-23S 044-00W,…
  45. HYDROLANT 1938/082008-11-12 → 2008-11-13
    Seismic survey by M/V discoverer in progress until 12 nov in area bound by 28-20S 046-21W, 28-23S 046-15W,…
  46. HYDROLANT 1921/082008-11-09 → 2008-11-12
    Seismic survey by M/V discoverer: a. in progress in area bound by 28-56S 046-00W, 28-56S 045-55W, 31-32S…
  47. HYDROLANT 1917/082008-11-08 → 2012-01-28
    Pipe laying operations in progress until further notice by M/V global iroquois in area bound by 23-40.6S…
  48. HYDROLANT 1908/082008-11-07 → 2008-11-13
    Seismic survey 070300Z nov to 130259Z nov by M/V ramform valiant towing 12 6500 meter long cables in area…
  49. HYDROLANT 1905/082008-11-06 → 2008-11-10
    Seismic survey in progress until 09 nov by M/V veritas vantage towing eight 6500 meter long cables in area…
  50. HYDROLANT 1897/082008-11-06 → 2008-11-10
    Seismic survey 08 thru 09 nov by M/V discoverer in area bound by 28-20S 046-21W, 28-23S 046-15W, 31-03S…

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 44 · seahazards