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 3484/002000-10-13 → 2000-10-15
    Seismic survey in progress until 14 oct by M/V ramform explorer towing eight 7500 meter long cables in area…
  2. HYDROLANT 3479/002000-10-12 → 2000-10-20
    Seismic survey in progress until 19 oct by M/V western regent and M/V kenda towing eight 4000 meter long…
  3. HYDROLANT 3459/002000-10-11 → 2000-10-13
    Seismic survey in progress until 12 oct by M/V geco tau towing 8300 meter long cable in area bound by 04-43S…
  4. HYDROLANT 3458/002000-10-11 → 2000-10-12
    Seismic survey in progress until 11 oct by M/V ramform explorer towing eight 6500 meter long cables in area…
  5. HYDROLANT 3457/002000-10-11 → 2000-10-16
    Seismic survey in progress until 15 oct by M/V western atlas and M/V western patriot towing seven 3000 meter…
  6. HYDROLANT 3449/002000-10-10 → 2000-10-12
    Seismic survey in progress until 14 oct by M/V western regent and M/V kenda towing eight 4000 meter long…
  7. HYDROLANT 3448/002000-10-10 → 2000-10-12
    Seismic survey in progress until 11 oct by M/V cgg harmattan towing 6000 meter long cable in area bound by…
  8. HYDROLANT 3435/002000-10-08 → 2000-10-11
    Seismic survey in progress until 10 oct by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  9. HYDROLANT 3434/002000-10-08 → 2000-10-11
    Seismic survey in progress until 10 oct by M/V northern access towing 8704 meter long cable in area bound by…
  10. HYDROLANT 3430/002000-10-07 → 2000-10-10
    Seismic survey in progress until 09 oct by M/V cgg harmattan towing 6000 meter long cable in area bound by…
  11. HYDROLANT 3421/002000-10-06 → 2000-10-10
    Submarine cable operations 060800Z to 100001Z oct by cableship maersk defender along trackline joining…
  12. HYDROLANT 3419/002000-10-06 → 2000-10-09
    Seismic survey in progress until 08 oct by M/V geco tau towing 8300 meter long cable in area bound by 04-47S…
  13. HYDROLANT 3408/002000-10-05 → 2000-10-10
    Seismic survey in progress until 09 oct by M/V ramform explorer towing eight 6500 meter long cables in area…
  14. HYDROLANT 3407/002000-10-05 → 2000-10-08
    Seismic survey in progress until 07 oct by M/V ramform victory, M/V falcon explorer and M/V sanco sea towing…
  15. HYDROLANT 3406/002000-10-05 → 2000-10-08
    Seismic survey in progress until 07 oct by M/V northern access towing 8704 meter long cable in area bound by…
  16. HYDROLANT 3405/002000-10-05 → 2000-10-10
    Seismic survey in progress until 09 oct by M/V western regent and M/V kenda towing eight 4000 meter long…
  17. HYDROLANT 3404/002000-10-05 → 2000-10-07
    Seismic survey in progress until 06 oct by M/V cgg harmattan towing 6000 meter long cable in area bound by…
  18. HYDROLANT 3396/002000-10-04 → 2000-10-05
    Seismic survey in progress until 06 oct by M/V ramform explorer towing eight 6500 meter long cables in area…
  19. HYDROLANT 3395/002000-10-04 → 2000-10-11
    Seismic survey 05 thru 10 oct by M/V western atlas and M/V western patriot towing seven 3000 meter long…
  20. HYDROLANT 3383/002000-10-03 → 2000-10-06
    Seismic survey in progress until 05 oct by M/V geco tau towing 8300 meter long cable in area bound by 05-00S…
  21. HYDROLANT 3382/002000-10-03 → 2000-10-04
    Seismic survey in progress until 03 oct by M/V ramform explorer towing eight 6500 meter long cables in area…
  22. HYDROLANT 3373/002000-10-02 → 2000-10-05
    Seismic survey in progress until 04 oct by M/V northern access towing 8704 meter long cable in area bound by…
  23. HYDROLANT 3372/002000-10-02 → 2000-10-05
    Seismic survey in progress until 04 oct by M/V ramform victory, M/V sanco sea and M/V falcon explorer towing…
  24. HYDROLANT 3367/002000-10-01 → 2000-10-05
    Seismic survey in progress until 05 oct by M/V western regent and M/V kenda towing eight 4000 meter long…
  25. HYDROLANT 3365/002000-09-30 → 2000-10-04
    Seismic survey in progress until 03 oct by M/V cgg harmattan towing 6000 meter long cable in area bound by…
  26. HYDROLANT 3356/002000-09-30 → 2000-10-03
    Seismic survey in progress until 02 oct by M/V geco tau towing 8300 meter long cable in area bound by 05-00S…
  27. HYDROLANT 3345/002000-09-29 → 2000-10-02
    Seismic survey in progress until 01 oct by M/V northern access towing 8704 meter long cable in area bound by…
  28. HYDROLANT 3344/002000-09-29 → 2000-10-02
    Seismic survey in progress until 01 oct by M/V ramform victory, M/V sanco sea and M/V falcon explorer towing…
  29. HYDROLANT 3343/002000-09-29 → 2000-10-01
    Submarine cable operations 290001Z sep to 010800Z oct by cableship maersk defender along trackline joining…
  30. HYDROLANT 3332/002000-09-28 → 2000-10-01
    Seismic survey in progress until 30 sep by M/V ramform explorer towing eight 6500 meter long cables in area…
  31. HYDROLANT 3331/002000-09-28 → 2000-10-01
    Seismic survey in progress until 30 sep by M/V cgg harmattan towing 6000 meter long cable in area bound by…
  32. HYDROLANT 3330/002000-09-28 → 2000-09-29
    Seismic survey in progress until 28 sep by M/V northern access towing 8704 meter long cable in area bound by…
  33. HYDROLANT 3315/002000-09-27 → 2000-09-30
    Seismic survey in progress until 29 sep by M/V geco tau towing 8300 meter long cable in area bound by 05-00S…
  34. HYDROLANT 3313/002000-09-26 → 2000-09-28
    Seismic survey in progress until 27 sep by M/V northern access towing 8704 meter long cable in area bound by…
  35. HYDROLANT 3308/002000-09-26 → 2000-09-27
    Seismic survey in progress until 28 sep by M/V geco tau towing 8300 meter long cable in area bound by 05-00S…
  36. HYDROLANT 3307/002000-09-26 → 2000-09-29
    Seismic survey in progress until 28 sep by M/V ramform victory, M/V sanco sea and M/V falcon explorer towing…
  37. HYDROLANT 3306/002000-09-26 → 2000-09-29
    Seismic survey in progress until 28 sep by M/V ramform vanguard and M/V kondor explorer towing ten 4800…
  38. HYDROLANT 3304/002000-09-26 → 2000-10-01
    Seismic survey in progress until 30 sep by M/V western regent and M/V kenda towing eight 4000 meter long…
  39. HYDROLANT 3303/002000-09-26 → 2000-10-03
    1000 meter long seismic cable adrift in 22-11.2S 040-01.2W at 241335Z sep
  40. HYDROLANT 3292/002000-09-25 → 2000-09-28
    Seismic survey in progress until 27 sep by M/V ramform explorer towing eight 6500 meter long cables in area…
  41. HYDROLANT 3291/002000-09-25 → 2000-09-28
    Seismic survey in progress until 27 sep by M/V cgg harmattan towing 6000 meter long cable in area bound by…
  42. HYDROLANT 3290/002000-09-25 → 2000-09-29
    Cable laying operations 26 thru 29 sep by cableship maersk defender along trackline joining 03-45.4S…
  43. HYDROLANT 3284/002000-09-24 → 2000-09-25
    Seismic survey in progress until 24 sep by M/V northern access towing 8704 meter long cable in area bound by…
  44. HYDROLANT 3283/002000-09-23 → 2000-09-25
    Seismic survey in progress until 24 sep by M/V ramform explorer towing eight 6500 meter long cables in area…
  45. HYDROLANT 3281/002000-09-23 → 2000-09-26
    Seismic survey in progress until 25 sep by M/V geco tau towing 8300 meter long cable in area bound by 05-00S…
  46. HYDROLANT 3277/002000-09-23 → 2000-09-24
    Seismic survey in progress until 240300Z sep by M/V ramform victory, M/V falcon explorer, and M/V sanco sea…
  47. HYDROLANT 3276/002000-09-23 → 2000-09-26
    Seismic survey in progress until 25 sep by M/V ramform vanguard and M/V kondor explorer towing ten 4800…
  48. HYDROLANT 3263/002000-09-22 → 2000-09-25
    Seismic survey in progress until 24 sep by M/V cgg harmattan towing 6000 meter long cable in area bound by…
  49. HYDROLANT 3251/002000-09-21 → 2000-09-26
    Seismic survey in progress until 25 sep by M/V western regent and M/V kenda towing eight 4000 meter long…
  50. HYDROLANT 3245/002000-09-20 → 2000-09-24
    Seismic survey in progress until 23 sep by M/V northern access towing 8704 meter long cable in area bound by…

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 88 · seahazards