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 3017/002000-08-30 → 2000-09-01
    Seismic survey in progress until 01 sep by M/V geco tau towing 8300 meter long cable in area bound by 02-43S…
  2. HYDROLANT 3014/002000-08-30 → 2000-09-02
    Cable laying operations in progress until 02 sep by cableship heimdal along trackline between 03-44S 038-26W…
  3. HYDROLANT 3002/002000-08-29 → 2000-08-31
    Seismic survey in progress until 30 aug by M/V ramform victory, M/V sanco sea and M/V falcon explorer towing…
  4. HYDROLANT 3000/002000-08-29 → 2000-09-05
    Seismic survey in progress until 04 sep by M/V new venture towing 8500 meter long cable in area bound by…
  5. HYDROLANT 2989/002000-08-28 → 2000-08-31
    Seismic survey in progress until 30 aug by M/V northern access towing 8704 meter long cable in area bound by…
  6. HYDROLANT 2988/002000-08-28 → 2000-08-31
    Seismic survey in progress until 30 aug by M/V cgg harmattan towing six 6000 meter long cables in area bound…
  7. HYDROLANT 2987/002000-08-28 → 2000-09-01
    Seismic survey in progress until 31 aug by M/V ramform explorer towing eight 6500 meter long cables in area…
  8. HYDROLANT 2974/002000-08-27 → 2000-08-30
    Cable laying operations in progress until 300001Z aug by M/V teliri towing 112 meter long cable along…
  9. HYDROLANT 2973/002000-08-27 → 2000-08-31
    Cable laying operations in progress until 311239Z aug by cableship sovereign along trackline joining 04-55S…
  10. HYDROLANT 2972/002000-08-27 → 2000-08-29
    Seismic survey in progress until 28 aug by M/V geco tau towing 8300 meter long cable in area bound by 02-44S…
  11. HYDROLANT 2966/002000-08-26 → 2000-08-29
    Seismic survey in progress until 01 sep by M/V new venture towing 8334 meter long cable in area bound by…
  12. HYDROLANT 2965/002000-08-26 → 2000-08-30
    Cable laying operations 271500Z to 301500Z aug by cableship heimdal along trackline between 03-44S 038-26W…
  13. HYDROLANT 2958/002000-08-25 → 2000-08-28
    Seismic survey in progress until 27 aug by M/V geco tau towing 11000 meter long cable in area bound by…
  14. HYDROLANT 2957/002000-08-25 → 2000-08-27
    Cable laying operations in progress until 271110Z aug by cableship sovereign along trackline joining…
  15. HYDROLANT 2954/002000-08-25 → 2000-08-29
    Seismic survey in progress until 28 aug by M/V ramform victory, M/V sanco sea and M/V falcon explorer towing…
  16. HYDROLANT 2952/002000-08-25 → 2000-08-28
    Seismic survey in progress until 27 aug by M/V cgg harmattan towing six 6000 meter long cables in area bound…
  17. HYDROLANT 2951/002000-08-25 → 2000-08-30
    Seismic survey in progress until 29 aug by M/V western atlas and M/V western patriot towing seven 3000 meter…
  18. HYDROLANT 2950/002000-08-25 → 2000-08-31
    Seismic survey in progress until 30 aug by M/V western regent and M/V kenda towing eight 4000 meter long…
  19. HYDROLANT 2945/002000-08-24 → 2000-08-27
    Cable laying operations 241500Z to 271500Z aug by cableship heimdal along trackline between 00-30N 039-20W…
  20. HYDROLANT 2941/002000-08-24 → 2000-08-28
    Seismic survey in progress until 27 aug by M/V northern access towing 8704 meter long cable in area bound by…
  21. HYDROLANT 2933/002000-08-23 → 2000-08-25
    Seismic survey in progress until 24 aug by M/V ramform victory, M/V sanco sea and M/V falcon explorer towing…
  22. HYDROLANT 2932/002000-08-23 → 2000-08-24
    Seismic survey in progress until 23 aug by M/V northern access towing 8704 meter long cable in area bound by…
  23. HYDROLANT 2931/002000-08-23 → 2000-08-26
    Cable laying operations in progress until 260700Z aug by M/V teliri towing 112 meter long cable along…
  24. HYDROLANT 2929/002000-08-23 → 2000-08-28
    Seismic survey in progress until 28 aug by M/V ramform explorer towing eight 6500 meter long cables in area…
  25. HYDROLANT 2928/002000-08-23 → 2000-08-26
    Seismic survey in progress until 25 aug by M/V new venture towing 8334 meter long cable in area bound by…
  26. HYDROLANT 2921/002000-08-22 → 2000-08-23
    Seismic survey in progress until 22 aug by M/V northern access towing 8704 meter long cable in area bound by…
  27. HYDROLANT 2920/002000-08-22 → 2000-08-22
    Cable laying operations in progress until 220900Z aug by M/V teliri along trackline between 23-02S 043-27W…
  28. HYDROLANT 2913/002000-08-21 → 2000-08-23
    Seismic survey in progress until 24 aug by M/V ramform victory, M/V sanco sea and M/V falcon explorer towing…
  29. HYDROLANT 2912/002000-08-21 → 2000-08-25
    Seismic survey in progress until 24 aug by M/V cgg harmattan towing six 6000 meter long cables in area bound…
  30. HYDROLANT 2903/002000-08-20 → 2000-08-23
    Seismic survey in progress until 22 aug by M/V new venture towing 8334 meter long cable in area bound by…
  31. HYDROLANT 2902/002000-08-20 → 2000-08-25
    Seismic survey in progress until 24 aug by M/V western atlas and M/V western patriot towing seven 3000 meter…
  32. HYDROLANT 2901/002000-08-20 → 2000-08-25
    Seismic survey in progress until 25 aug by M/V western regent and M/V kenda towing eight 4000 meter long…
  33. HYDROLANT 2900/002000-08-20 → 2000-08-23
    Seismic survey in progress until 24 aug by M/V ramform explorer towing eight 6500 meter long cables in area…
  34. HYDROLANT 2899/002000-08-20 → 2000-08-24
    Seismic survey in progress until 23 aug by M/V geco tau towing 11000 meter long cable in area bound by…
  35. HYDROLANT 2891/002000-08-19 → 2000-08-22
    Seismic survey in progress until 21 aug by M/V northern access towing 8704 meter long cable in area bound by…
  36. HYDROLANT 2890/002000-08-19 → 2000-08-24
    Cable layiing operations in progress until 241500Z aug by cableship heimdal in area bound by 03-42.9S…
  37. HYDROLANT 2883/002000-08-18 → 2000-08-20
    Seismic survey in progress until 21 aug by M/V ramform explorer towing eight 6500 meter long cables in area…
  38. HYDROLANT 2880/002000-08-18 → 2000-08-20
    Seismic survey in progress until 22 aug by M/V geco tau towing 11000 meter long cable in area bound by…
  39. HYDROLANT 2879/002000-08-18 → 2000-08-21
    Seismic survey in progress until 20 aug by M/V cgg harmattan towing six 6000 meter long cables in area bound…
  40. HYDROLANT 2877/002000-08-17 → 2000-08-18
    Cable laying operations 171000Z to 180900Z aug by M/V teliri along trackline between 23-02S 043-27W and…
  41. HYDROLANT 2876/002000-08-17 → 2000-08-21
    Seismic survey in progress until 20 aug by M/V ramform victory, M/V sanco sea and M/V falcon explorer towing…
  42. HYDROLANT 2873/002000-08-17 → 2000-08-20
    Seismic survey in progress until 19 aug by M/V new venture towing 8334 meter long cable in area bound by…
  43. HYDROLANT 2862/002000-08-16 → 2000-08-19
    Seismic survey in progress until 18 aug by M/V northern access towing 8704 meter long cable in area bound by…
  44. HYDROLANT 2861/002000-08-16 → 2000-08-18
    Seismic survey in progress until 19 aug by M/V ramform explorer towing eight 6500 meter long cables in area…
  45. HYDROLANT 2860/002000-08-16 → 2000-08-20
    Seismic survey in progress until 19 aug by M/V western regent and M/V kenda towing eight 4000 meter long…
  46. HYDROLANT 2853/002000-08-15 → 2000-08-20
    Seismic survey in progress until 19 aug by M/V western atlas and M/V western patriot towing seven 3000 meter…
  47. HYDROLANT 2851/002000-08-15 → 2000-08-18
    Seismic survey in progress until 19 aug by M/V geco tau towing 11000 meter long cable in area bound by…
  48. HYDROLANT 2850/002000-08-15 → 2000-08-16
    Seismic survey in progress until 15 aug by M/V northern access towing 8704 meter long cable in area bound by…
  49. HYDROLANT 2842/002000-08-14 → 2000-08-17
    Seismic survey in progress until 16 aug by M/V ramform victory, M/V sanco sea and M/V falcon explorer towing…
  50. HYDROLANT 2841/002000-08-14 → 2000-08-17
    Seismic survey in progress until 16 aug by M/V polar search towing four 6482 meter long cables in area bound…

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 90 · seahazards