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 394/062006-02-25 → 2006-03-01
    Seismic survey in progress until 28 feb by M/V ramform valiant towing ten 6000 meter long cables in area…
  2. HYDROLANT 360/062006-02-21 → 2006-02-25
    Seismic survey in progress until 24 feb by M/V ramform valiant towing ten 6000 meter long cables in area…
  3. HYDROLANT 326/062006-02-16 → 2006-02-21
    Seismic survey in progress until 20 feb by M/V ramform valiant towing ten 6000 meter long cables in area…
  4. HYDROLANT 308/062006-02-14 → 2006-02-16
    Seismic survey in progress until 16 feb by M/V ramform valiant towing ten 6000 meter long cables in area…
  5. HYDROLANT 299/062006-02-13 → 2006-04-12
    Seismic survey in progress until further notice by M/V american explorer towing six 7000 meter long cables…
  6. HYDROLANT 290/062006-02-12 → 2006-02-18
    Seismic survey 140300Z to 180259Z feb by M/V ramform challenger towing ten 6000 meter cables in area bound…
  7. HYDROLANT 258/062006-02-07 → 2006-02-12
    Seismic survey 071200Z to 120159Z feb by M/V ramform challenger towing ten 6000 meter long cables in area…
  8. HYDROLANT 249/062006-02-05 → 2006-02-09
    Seismic survey in progress until 090200Z feb by M/V ramform challenger towing ten 6000 meter long cables in…
  9. HYDROLANT 232/062006-02-02 → 2006-02-05
    Seismic survey in progress until 050159Z feb by M/V ramform challenger towing ten 6000 meter long cables in…
  10. HYDROLANT 224/062006-02-01 → 2006-02-02
    Seismic survey in progress until 020159Z feb by M/V ramform challenger towing ten 6000 meter long cables in…
  11. HYDROLANT 213/062006-01-31 → 2006-02-01
    Seismic survey in progress until 010159Z feb by M/V ramform challenger towing ten 6000 meter long cables in…
  12. HYDROLANT 174/062006-01-27 → 2006-01-31
    Seismic survey in progress until 30 jan by M/V ramform valiant towing ten 6000 meter long cables in area…
  13. HYDROLANT 166/062006-01-26 → 2006-01-31
    Seismic survey in progress until 310159Z jan by M/V ramform challenger towing ten 6000 meter long cables in…
  14. HYDROLANT 143/062006-01-23 → 2006-01-26
    Seismic survey in progress until 260159Z jan by M/V ramform challenger towing ten 6000 meter long cables in…
  15. HYDROLANT 119/062006-01-19 → 2006-01-23
    Seismic survey 200200Z to 230159Z jan by M/V ramform challenger towing ten 6000 meter long cables in area…
  16. HYDROLANT 100/062006-01-17 → 2006-02-09
    Seismic survey in progress until further notice by M/V american explorer and M/V amber-g towing six 7000…
  17. HYDROLANT 98/062006-01-16 → 2006-01-19
    Seismic survey in progress until 190159Z jan by M/V ramform challenger towing ten 6000 meter long cables in…
  18. HYDROLANT 81/062006-01-13 → 2006-01-17
    Seismic survey 140600Z until further notice by american explorer towing six 700 meter long cables in area…
  19. HYDROLANT 76/062006-01-13 → 2006-01-16
    Seismic survey in progress until 160159Z jan by M/V ramform challenger towing ten 6000 meter long cables in…
  20. HYDROLANT 42/062006-01-07 → 2006-01-13
    Seismic survey in progress until 130300Z jan by M/V ramform challenger towing ten 6000 meter long cables in…
  21. HYDROLANT 31/062006-01-05 → 2006-01-09
    Seismic survey in progress until 08 jan by M/V ramform valiant towing ten 6000 meter long cables in area…
  22. HYDROLANT 22/062006-01-04 → 2006-01-07
    Seismic survey in progress until 070300Z jan by M/V ramform challenger towing ten 6000 meter long cables in…
  23. HYDROLANT 16/062006-01-03 → 2006-01-05
    Seismic survey in progress until 06 jan by M/V ramform valiant towing ten 6000 meter long cables in area…
  24. HYDROLANT 1/062006-01-01 → 2006-01-04
    Seismic survey in progress until 040300Z jan by M/V ramform challenger towing ten 6000 meter long cables in…
  25. HYDROLANT 2433/052005-12-31 → 2006-01-03
    Seismic survey in progress until 02 jan by M/V ramform valiant towing ten 6000 meter long cables in area…
  26. HYDROLANT 2422/052005-12-27 → 2006-01-01
    Seismic survey in progress until 010300Z jan by M/V ramform challenger towing ten 6000 meter long cables in…
  27. HYDROLANT 2421/052005-12-27 → 2005-12-31
    Seismic survey in progress until 30 dec by M/V ramform valiant towing ten 6000 meter long cables in area…
  28. HYDROLANT 2402/052005-12-25 → 2005-12-27
    Seismic survey in progress until 270300Z dec by M/V ramform challenger towing ten 6000 meter long cables in…
  29. HYDROLANT 2396/052005-12-24 → 2005-12-25
    Seismic survey in progress until 250300Z dec by M/V ramform challenger in area bound by 23-39.00S…
  30. HYDROLANT 2388/052005-12-22 → 2005-12-27
    Seismic survey in progress until 26 dec by M/V ramform valiant towing ten 6000 meter long cables in area…
  31. HYDROLANT 2363/052005-12-18 → 2005-12-22
    Seismic survey in progress until 21 dec by M/V ramform valiant towing ten 6000 meter long cables in area…
  32. HYDROLANT 2333/052005-12-13 → 2005-12-18
    Seismic survey in progress until 17 dec by M/V ramform valiant towing ten 6000 meter long cables in area…
  33. HYDROLANT 2296/052005-12-08 → 2005-12-13
    Seismic survey in progress until 12 dec by M/V ramform valiant towing ten 6000 meter long cables in area…
  34. HYDROLANT 2257/052005-12-03 → 2005-12-08
    Seismic survey in progress until 07 dec by M/V ramform valiant towing ten 6000 meter long cables in area…
  35. HYDROLANT 2208/052005-11-29 → 2005-12-03
    Seismic survey in progress until 02 dec by M/V ramform valiant towing ten 6000 meter long cables in area…
  36. HYDROLANT 2198/052005-11-27 → 2005-12-01
    Seismic survey in progress until 010259Z dec by M/V geo angler towing 3500 meter long cable in area bound by…
  37. HYDROLANT 2176/052005-11-24 → 2005-11-30
    Seismic survey in progress until 29 nov by M/V ramform valiant towing ten 6000 meter long cables in area…
  38. HYDROLANT 2162/052005-11-23 → 2005-11-27
    Seismic survey in progress until 270259Z nov by M/V geo angler towing 3500 meter long cable in area bound by…
  39. HYDROLANT 2129/052005-11-19 → 2005-11-24
    Seismic survey in progress until 240300Z nov by M/V ramform valiant towing ten 6000 meter long cables in…
  40. HYDROLANT 2018/052005-11-04 → 2005-11-09
    Seismic survey in progress until 090259Z nov by M/V geo angler towing 3500 meter long cable in area bound by…
  41. HYDROLANT 1983/052005-11-01 → 2005-11-04
    Seismic survey in progress until 040259Z nov by M/V geo angler towing 3500 meter long cable in area bound by…
  42. HYDROLANT 1949/052005-10-26 → 2005-11-01
    Seismic survey in progress until 010259Z nov by M/V geo angler towing 3500 meter long cable in area bound by…
  43. HYDROLANT 1943/052005-10-25 → 2005-10-27
    Seismic survey in progress until 270159Z oct by M/V ramform challenger towing ten 6000 meter long cables in…
  44. HYDROLANT 1917/052005-10-20 → 2005-10-25
    Seismic survey in progress until 250259Z oct by M/V geo angler towing 3500 meter long cable in area bound by…
  45. HYDROLANT 1883/052005-10-15 → 2005-10-20
    Seismic survey in progress until 200259Z oct by M/V geo angler towing 3500 meter long cable in area bound by…
  46. HYDROLANT 1868/052005-10-12 → 2005-10-15
    Seismic survey 130259Z to 150300Z oct by M/V ocean surveyor along trackline between 20-47.2S 040-33.4W and…
  47. HYDROLANT 1864/052005-10-12 → 2005-10-15
    Seismic survey in progress until 150259Z oct by M/V geo angler towing 3500 meter long cable in area bound by…
  48. HYDROLANT 1846/052005-10-08 → 2005-10-12
    Seismic survey in progress until 120259Z oct by M/V geo angler towing 3500 meter long cable in area bound by…
  49. HYDROLANT 1845/052005-10-08 → 2005-10-11
    Seismic survey in progress until 120259Z oct by M/V fugro explorer in area bound by 22-24.1S 039-55.0W,…
  50. HYDROLANT 1838/052005-10-07 → 2005-10-08
    Seismic survey operations in progress until 080259Z oct by M/V ramform valiant towing ten 6000 meter long…

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 57 · seahazards