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 · 52 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 · 19 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 2817/991999-12-26 → 2000-01-03
    Seismic survey in progress until 02 jan by M/V ramform victory towing 6500 meter long cable in area bound by…
  2. HYDROLANT 2813/991999-12-26 → 2000-01-01
    Seismic survey in progress until 02 jan by M/V geco eagle towing 14816 meter long cable in area bound by…
  3. HYDROLANT 2811/991999-12-26 → 2000-01-01
    Seismic survey in progress until 02 jan by M/V ramform viking towing 4500 meter long cable in area bound by…
  4. HYDROLANT 2810/991999-12-26 → 2000-01-03
    Seismic survey in progress until 02 jan by M/V kenda towing 7400 meter long cable in area bound by 26-16S…
  5. HYDROLANT 2809/991999-12-26 → 2000-01-01
    Seismic survey in progress until 02 jan by M/V ramform vanguard towing 4500 meter long cable in area bound…
  6. HYDROLANT 2808/991999-12-26 → 2000-01-01
    Seismic survey in progress until 02 jan by M/V akademik shatskiy towing 10186 meter long cable in area bound…
  7. HYDROLANT 2807/991999-12-26 → 2000-01-03
    Seismic survey in progress until 02 jan by M/V geco tau towing 8340 meter long cable in area bound by 13-00S…
  8. HYDROLANT 2806/991999-12-26 → 2000-01-01
    Seismic survey in progress until 02 jan by M/V geo arctic towing 16670 meter long cable in area bound by…
  9. HYDROLANT 2805/991999-12-26 → 2000-01-03
    Seismic survey in progress until 02 jan by M/V geco marlin towing 9260 meter long cable in area bound by…
  10. HYDROLANT 2789/991999-12-23 → 1999-12-31
    Seismic survey in progress until 30 dec by M/V geco tau towing 8500 meter long cable in area bound by 13-13S…
  11. HYDROLANT 2788/991999-12-23 → 2000-01-01
    Seismic survey 24 thru 31 dec by M/V nan hai 502 towing 7500 meter long cable in area bound by 20-20S…
  12. HYDROLANT 2784/991999-12-22 → 2000-01-16
    Seismic survey in progress until 15 jan by M/V western atlas towing 5000 meter long cable in area bound by…
  13. HYDROLANT 2767/991999-12-19 → 1999-12-27
    Seismic survey 19 thru 26 dec by M/V geco marlin towing five mile long cable in area bound by 22-05S…
  14. HYDROLANT 2766/991999-12-19 → 1999-12-27
    Seismic survey 19 thru 26 dec by M/V akademik nikolai strakhov towing 1500 meter long cable in area bound by…
  15. HYDROLANT 2764/991999-12-19 → 1999-12-27
    Seismic survey 19 thru 26 dec by M/V ramford vanguard towing 4500 meter long cable in area bound by 23-52S…
  16. HYDROLANT 2762/991999-12-19 → 1999-12-27
    Seismic survey 19 thru 26 dec by M/V ramform viking towing 4500 meter long cable in area bound by 22-20S…
  17. HYDROLANT 2761/991999-12-19 → 1999-12-27
    Seismic survey 19 thru 26 dec by M/V akademik shatskiy towing 5.5 mile long cable in area bound by 23-38S…
  18. HYDROLANT 2760/991999-12-19 → 1999-12-27
    Seismic survey 19 thru 26 dec by M/V geco eagle towing eight mile long cable in area bound by 21-11S…
  19. HYDROLANT 2758/991999-12-19 → 1999-12-27
    Seismic survey 19 thru 26 dec by M/V geo arctic towing nine mile long cable in area bound by 24-14S 041-23W,…
  20. HYDROLANT 2718/991999-12-15 → 1999-12-24
    Seismic survey 16 thru 23 dec by M/V nan hai towing 4.1 mile long cable in area bound by 20-20S 039-30W,…
  21. HYDROLANT 2712/991999-12-14 → 1999-12-15
    Seismic survey 16 thru 23 dec by M/V nan hai towing 4.1 mile long cable in area bound by 20-20S 039-50W,…
  22. HYDROLANT 2690/991999-12-12 → 1999-12-20
    Seismic survey in progress until 19 dec by M/V kenda towing four mile long cable along trackline joining…
  23. HYDROLANT 2689/991999-12-12 → 1999-12-20
    Seismic survey in progress until 19 dec by M/V geo arctic towing five mile long cable along trackline…
  24. HYDROLANT 2623/991999-12-04 → 1999-12-13
    Seismic survey in progress until 12 dec by M/V akademik shatskiy towing 5.5 mile long cable along trackline…
  25. HYDROLANT 2621/991999-12-04 → 1999-12-12
    Seismic survey in progress until 12 dec by M/V geo arctic towing five mile long cable along trackline…
  26. HYDROLANT 2620/991999-12-04 → 1999-12-13
    Seismic survey in progress until 12 dec by M/V geco marlin towing five mile long cable along trackline…
  27. HYDROLANT 2589/991999-12-01 → 1999-12-04
    Seismic survey in progress until 03 dec by M/V geco marlin towing five mile long cable along trackline…
  28. HYDROLANT 2585/991999-12-01 → 1999-12-08
    Seismic survey in progress until 07 dec by M/V nan hai 502 towing four mile long cable in area bound by…
  29. HYDROLANT 2567/991999-11-29 → 1999-11-30
    Seismic survey in progress until 292359Z nov by M/V geo arctic towing five mile long cable along trackline…
  30. HYDROLANT 2561/991999-11-28 → 1999-11-30
    Seismic survey in progress until 01 dec by M/V geco tau towing 4.5 mile long cable in area bound by 14-44.7S…
  31. HYDROLANT 2559/991999-11-28 → 1999-12-01
    Seismic survey in progress until 15 dec by M/V geco marlin towing five mile long cable along trackline…
  32. HYDROLANT 2528/991999-11-24 → 1999-12-03
    Seismic survey in progress until further notice by M/V akademik shatskit towing six mile long cable along…
  33. HYDROLANT 2527/991999-11-24 → 1999-11-28
    Seismic survey in progress until further notice by M/V geo arctic towing five mile long cable along…
  34. HYDROLANT 2508/991999-11-23 → 1999-11-27
    Seismic survey in progress until 26 nov by M/V mezen towing 7350 meter long cable along trackline joining…
  35. HYDROLANT 2491/991999-11-21 → 1999-11-23
    Seismic survey in progress until 26 nov by M/V mezen towing 750 meter long cable along trackline joining…
  36. HYDROLANT 2459/991999-11-16 → 1999-11-24
    Seismic survey in progress until 12 jan by M/V geo arctic towing five mile long cable along trackline…
  37. HYDROLANT 2451/991999-11-15 → 1999-11-17
    Seismic survey 161100Z to 171700Z nov by M/V northern horizon along a trackline joining 03-41.7S 038-09.3W,…
  38. HYDROLANT 2422/991999-11-11 → 1999-11-16
    Seismic survey in progress until further notice by M/V geo arctic towing five mile long cable along…
  39. HYDROLANT 2414/991999-11-11 → 2000-02-11
    Underwater cable operations in progress until further notice within one mile of 36-34.97S 055-28.65W
  40. HYDROLANT 2399/991999-11-09 → 1999-11-24
    Seismic survey in progress until further notice by M/V akademik shatskit towing equipment vicinity 23-12.0S…
  41. HYDROLANT 2378/991999-11-07 → 1999-11-24
    Seismic survey in progress until 26 feb by M/V nan hai 502 towing 7500 meter long cable with tailbuoy in…
  42. HYDROLANT 2219/991999-10-16 → 1999-12-22
    Seismic survey 18 oct thru 25 dec by M/V western atlas towing five 4000 meter long cables in area bound by…
  43. HYDROLANT 2210/991999-10-15 → 1999-10-16
    Seismic survey in progress until further notice by M/V geo arctic vicinity 23-49S 042-34W
  44. HYDROLANT 2186/991999-10-12 → 1999-10-27
    Seismic survey in progress until 06 nov by M/V ara puerto deseado towing 1000 meter long cable in areas: a.…
  45. HYDROLANT 2167/991999-10-11 → 1999-11-09
    Seismic survey in progress until further notice by M/V kenda between 25-15S 042-27W and 25-55S 043-30W
  46. HYDROLANT 2165/991999-10-10 → 1999-10-11
    Seismic survey in progress until further notice by M/V kenda between 25-15S 042-27W and 25-55S 043-30W
  47. HYDROLANT 2138/991999-10-07 → 1999-11-01
    Seismic survey in progress until 31 oct by M/V ramform viking towing ten 4500 meter long cables in area…
  48. HYDROLANT 2121/991999-10-06 → 1999-10-11
    Seismic survey in progress until further notice by M/V kenda between 23-46S 043-24W and 24-20S 042-40W
  49. HYDROLANT 2080/991999-09-29 → 1999-11-11
    Underwater cable operations in progress until further notice within one mile of 36-35.0S 055-28.7W
  50. HYDROLANT 2035/991999-09-24 → 1999-10-31
    Seismic survey in progress until 30 oct by vessel towing 9000 meter long cables in area bound by 04-49S…

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 103 · seahazards