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 2032/062006-11-07 → 2006-11-16
    Seismic survey in progress until 180259Z nov by M/V cgg alize towing ten 6000 meter long cables in area…
  2. HYDROLANT 2023/062006-11-05 → 2006-11-07
    Seismic survey in progress until 070259Z nov by M/V cgg alize towing ten 6000 meter long cables in area…
  3. HYDROLANT 2010/062006-11-03 → 2006-11-04
    Seismic survey in progress until 040259Z nov by M/V cgg alize towing ten 6000 meter long cables in area…
  4. HYDROLANT 1985/062006-10-30 → 2006-11-02
    Seismic survey in progress until 020259Z nov by M/V ramform valiant towing ten 6000 meter long cables in…
  5. HYDROLANT 1983/062006-10-29 → 2006-11-03
    Seismic survey in progress until 070259Z nov by M/V cgg alize towing ten 6000 meter long cables in area…
  6. HYDROLANT 1957/062006-10-24 → 2006-10-30
    Seismic survey by M/V ramform valiant towing eight 8100 meter long cables as follows: a. 251000Z to 261900Z…
  7. HYDROLANT 1943/062006-10-22 → 2006-10-24
    Seismic survey 250300Z to 280259Z oct by M/V ramform valiant towing eight 8100 meter long cables in area…
  8. HYDROLANT 1937/062006-10-21 → 2006-10-28
    Seismic survey in progress until 280259Z oct by M/V rig supporter with submersible in area bound by…
  9. HYDROLANT 1936/062006-10-21 → 2006-10-28
    Seismic survey in progress until 280259Z oct by M/V cgg alize towing ten 6000 meter long cables in area…
  10. HYDROLANT 1921/062006-10-19 → 2006-10-20
    Seismic survey by M/V ramform valiant towing eight 8100 meter long cables as follows: a. in progress until…
  11. HYDROLANT 1919/062006-10-19 → 2006-10-19
    Seismic survey in progress until 21 oct by M/V ramform valiant towing eight 8100 meter long cables in area…
  12. HYDROLANT 1900/062006-10-16 → 2006-10-21
    Seismic survey in progress until 210259Z oct by M/V cgg alize towing ten 6000 meter long cables in area…
  13. HYDROLANT 1890/062006-10-14 → 2006-10-21
    Seismic survey in progress until 210259Z oct by M/V rig supporter with submersible in area bound by…
  14. HYDROLANT 1889/062006-10-14 → 2006-10-16
    Seismic survey in progress until 160259Z oct by M/V cgg alize towing ten 6000 meter long cables in area…
  15. HYDROLANT 1857/062006-10-10 → 2006-10-14
    Seismic survey in progress until 140259Z oct by M/V cgg alize towing ten 6000 meter long cables in area…
  16. HYDROLANT 1841/062006-10-07 → 2006-10-08
    Seismic survey in progress until 080259Z oct by M/V cgg alize towing ten 6000 meter long cables in area…
  17. HYDROLANT 1840/062006-10-07 → 2006-10-14
    Seismic survey in progress until 140259Z oct by M/V rig supporter with submersible in area bound by…
  18. HYDROLANT 1787/062006-10-01 → 2006-10-03
    Seismic survey in progress until 030300Z oct by cgg laurentian towing six 4000 meter long cables in area…
  19. HYDROLANT 1779/062006-09-30 → 2006-10-07
    Seismic survey in progress until 070259Z oct by M/V rig supporter with submersible in area bound by…
  20. HYDROLANT 1771/062006-09-29 → 2006-10-07
    Seismic survey in progress until 070259Z oct by M/V cgg alize towing ten 6000 meter long cables along…
  21. HYDROLANT 1765/062006-09-28 → 2006-09-30
    Seismic survey in progress until 300259Z sep by M/V rig supporter in area bound by 20-07.40S 039-31.42W,…
  22. HYDROLANT 1741/062006-09-25 → 2006-09-27
    Seismic survey in progress until 270259Z sep by M/V rig supporter in area bound by 20-07.40S 039-31.42W,…
  23. HYDROLANT 1734/062006-09-23 → 2006-09-29
    Seismic survey in progress until 290259Z sep by M/V cgg alize towing ten 6000 meter long cables along…
  24. HYDROLANT 1733/062006-09-23 → 2006-10-01
    Seismic survey in progress until 010300Z oct by M/V cgg laurentian towing six 4000 meter long cables along…
  25. HYDROLANT 1711/062006-09-19 → 2006-09-22
    Seismic survey in progress until 230259Z sep by M/V rig supporter in area bound by 20-07.40S 039-31.42W,…
  26. HYDROLANT 1700/062006-09-16 → 2006-09-19
    Seismic survey in progress until 190259Z sep by M/V rig supporter in area bound by 19-52.0S 039-39.0W,…
  27. HYDROLANT 1687/062006-09-14 → 2006-09-23
    Seismic survey in progress until 230300Z sep by M/V cgg laurentian towing six 4000 meter long cables along…
  28. HYDROLANT 1671/062006-09-13 → 2006-09-23
    Seismic survey in progress until 230259Z sep by M/V cgg alize towing ten 6000 meter long cables along…
  29. HYDROLANT 1669/062006-09-13 → 2006-09-28
    Cable operations in progress until further notice by M/V tyco resolute vicinity 36-48S 053-20W
  30. HYDROLANT 1662/062006-09-12 → 2006-09-13
    Seismic survey in progress until 122359Z sep by M/V cgg alize towing six 6000 meter long cables along…
  31. HYDROLANT 1651/062006-09-11 → 2006-09-12
    Seismic survey in progress until 210259Z sep by M/V cgg alize towing ten 6000 meter long cables along…
  32. HYDROLANT 1620/062006-09-05 → 2006-09-10
    Seismic survey operations by M/V cgg alize towing ten 6000 meter long cables: a. in progress until 120259Z…
  33. HYDROLANT 1613/062006-09-04 → 2006-09-05
    Seismic survey in progress until 160259Z sep by M/V cgg alize towing ten 6000 meter long cables in area…
  34. HYDROLANT 1612/062006-09-04 → 2006-09-15
    Seismic survey in progress until 14 sep by M/V cgg laurentian towing six 4000 meter long cables in area…
  35. HYDROLANT 1588/062006-08-31 → 2006-09-04
    Seismic survey 311500Z aug to 040259Z sep by M/V cgg alize towing ten 6000 meter long cables in area bound…
  36. HYDROLANT 1569/062006-08-27 → 2006-09-05
    Seismic survey in progress until 04 sep by M/V cgg laurentian towing six 4000 meter long cables along…
  37. HYDROLANT 1565/062006-08-26 → 2006-08-30
    Seismic survey in progress until 301459Z aug by M/V cgg alize towing ten 6000 meter long cables along…
  38. HYDROLANT 1534/062006-08-23 → 2006-08-26
    Seismic survey in progress until 260259Z aug by M/V cgg alize towing ten 6000 meter long cables along…
  39. HYDROLANT 1516/062006-08-20 → 2006-08-28
    Seismic survey in progress until 27 aug by M/V cgg laurentian towing six 4000 meter long cables along…
  40. HYDROLANT 1495/062006-08-16 → 2006-08-23
    Seismic survey in progress until 230259Z aug by M/V cgg alize towing ten 6000 meter long cables along…
  41. HYDROLANT 1494/062006-08-16 → 2006-08-23
    Seismic survey in progress until 260259Z aug by M/V ramform challenger towing ten 6000 meter long cables in…
  42. HYDROLANT 1466/062006-08-10 → 2006-08-19
    Seismic survey in progress until 18 aug by M/V cgg laurentian towing six 4000 meter long cables along…
  43. HYDROLANT 1452/062006-08-06 → 2006-08-10
    Seismic survey in progress until 12 aug by M/V cgg laurentian towing six 4000 meter long cables along…
  44. HYDROLANT 1427/062006-08-02 → 2006-08-16
    Seismic survey in progress until 160259Z aug by M/V alize towing ten 6000 meter long cables in area bound by…
  45. HYDROLANT 1426/062006-08-02 → 2006-08-16
    Seismic survey in progress until 160259Z aug by M/V ramform challenger towing ten 6000 meter long cables in…
  46. HYDROLANT 1411/062006-07-31 → 2006-08-07
    Seismic survey in progress until 06 aug by M/V cgg laurentian towing six 4000 meter long cables in area…
  47. HYDROLANT 1401/062006-07-28 → 2006-07-31
    Seismic survey in progress until 30 jul by M/V cgg laurentian towing six 4000 meter long cables in area…
  48. HYDROLANT 1384/062006-07-26 → 2006-07-28
    Seismic survey in progress until 280400Z jul by M/V cgg laurentian towing six 4000 meter long cables in area…
  49. HYDROLANT 1369/062006-07-22 → 2006-08-02
    Seismic survey 220300Z jul to 020259Z aug by M/V cgg alize towing ten 6000 meter long cables in area bound…
  50. HYDROLANT 1368/062006-07-22 → 2006-08-02
    Seismic survey 220300Z jul to 020259Z aug by M/V ramform challenger towing ten 6000 meter long cables in…

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 55 · seahazards