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 1579/092009-08-20 → 2009-08-28
    Seismic survey 210300Z to 280259Z aug by M/V ramform sovereing towing 14 8100 meter long cables in area…
  2. HYDROLANT 1578/092009-08-20 → 2009-08-28
    Seismic survey in progress until 27 aug by M/V ramform valiant towing ten 8100 meter long cables in area…
  3. HYDROLANT 1570/092009-08-19 → 2009-08-24
    Seismic survey by M/V discoverer towing 10000 meter long cable: a. 19 and 20 aug in area bound by 02-45S…
  4. HYDROLANT 1564/092009-08-18 → 2009-08-18
    Seismic survey in progress until further notice by M/V western patriot vicinity 46-36.9S 066-49.6W
  5. HYDROLANT 1558/092009-08-17 → 2009-08-18
    Seismic survey in progress until further notice by M/V western patriot vicinity 45-36S 066-25W
  6. HYDROLANT 1554/092009-08-16 → 2009-08-17
    Seismic survey in progress until further notice by M/V western patriot vicinity 45-59S 066-30W
  7. HYDROLANT 1550/092009-08-15 → 2009-08-19
    Seismic survey in progress until 190259Z aug by M/V western neptune towing 12 3.5 mile long cables in area…
  8. HYDROLANT 1549/092009-08-15 → 2009-08-19
    Seismic survey in progress until 190259Z aug by M/V ocean europe and M/V sanco star in area bound by…
  9. HYDROLANT 1547/092009-08-15 → 2009-08-19
    Seismic survey in progress until 190259Z aug by M/V ramform sovereing towing 14 8100 meter long cables in…
  10. HYDROLANT 1545/092009-08-15 → 2009-08-17
    Seismic survey 17 aug until further notice by M/V western patriot towing 6000 meter long cables in area…
  11. HYDROLANT 1544/092009-08-15 → 2009-08-16
    Seismic survey in progress until further notice by M/V western patriot vicinity 46-21.8S 067-17.4W
  12. HYDROLANT 1542/092009-08-15 → 2009-08-19
    Seismic survey by M/V discoverer towing 10000 meter long cable: a. 15 aug in area between 04-00S 04-50S and…
  13. HYDROLANT 1541/092009-08-15 → 2009-08-19
    Seismic survey in progress until 18 aug by M/V toisa vigilante towing two mile long cable in area bound by…
  14. HYDROLANT 1532/092009-08-14 → 2009-08-15
    Seismic survey 14 aug by M/V discoverer towing 10000 meter long cable in area bound by 04-37S 037-00W,…
  15. HYDROLANT 1516/092009-08-12 → 2009-08-20
    Seismic survey in progress until 19 aug by M/V ramform valiant towing ten 8100 meter long cables in area…
  16. HYDROLANT 1509/092009-08-11 → 2009-08-13
    Seismic survey 11 and 12 aug by M/V discoverer towing 10000 meter long cable in area bound by 04-50S…
  17. HYDROLANT 1502/092009-08-10 → 2009-08-11
    Seismic survey 10 aug by M/V discoverer towing 10000 meter long cable in area bound by 05-40S 034-47W,…
  18. HYDROLANT 1500/092009-08-09 → 2009-08-10
    Seismic survey 09 aug by M/V discoverer towing 10000 meter long cable in area bound by 05-46S 035-00W,…
  19. HYDROLANT 1493/092009-08-08 → 2009-08-15
    Seismic survey in progress until 150259Z aug by M/V ocean europe and M/V sanco star in area bound by…
  20. HYDROLANT 1492/092009-08-08 → 2009-08-15
    Seismic survey in progress until 150259Z aug by M/V western neptune towing 12 3.5 mile long cables in area…
  21. HYDROLANT 1488/092009-08-07 → 2009-09-23
    Cable repair operations in progress until further notice by M/V pacific guardian along trackline between…
  22. HYDROLANT 1487/092009-08-07 → 2009-08-09
    Seismic survey in progress until 08 aug by M/V discoverer towing 10000 meter long cables in area bound by…
  23. HYDROLANT 1486/092009-08-07 → 2009-08-10
    Seismic survey in progress until 09 aug by M/V toisa vigilante towing two mile long cable in area bound by…
  24. HYDROLANT 1478/092009-08-06 → 2009-08-07
    Seismic survey 06 aug by M/V toisa vigilante towing two mile long cable in area bound by 04-23S 036-56W,…
  25. HYDROLANT 1472/092009-08-05 → 2009-08-07
    Seismic survey in progress until 06 aug by M/V discoverer towing 10000 meter long cables in area bound by…
  26. HYDROLANT 1470/092009-08-05 → 2009-08-08
    Seismic survey in progress until 080259Z aug by M/V western neptune towing 12 3.5 mile long cables in area…
  27. HYDROLANT 1467/092009-08-04 → 2009-08-12
    Seismic survey in progress until 11 aug by M/V ramform valiant towing ten 8100 meter long cables in area…
  28. HYDROLANT 1462/092009-08-04 → 2009-08-05
    Seismic survey in progress until 05 aug by M/V discoverer towing 10000 meter long cables in area bound by…
  29. HYDROLANT 1455/092009-08-03 → 2009-08-04
    Seismic survey in progress until 040259Z aug by M/V discoverer towing 10000 meter long cables in area bound…
  30. HYDROLANT 1445/092009-08-01 → 2009-08-05
    Seismic survey in progress until 080259Z aug by M/V western neptune towing 12 3.5 mile long cables in area…
  31. HYDROLANT 1444/092009-08-01 → 2009-08-03
    Seismic survey 01 and 02 aug by M/V discoverer towing 10000 meter long cables in area bound by 07-12S…
  32. HYDROLANT 1435/092009-07-31 → 2009-08-06
    Seismic survey in progress until 05 aug by M/V toisa vigilante towing two mile long cable in area bound by…
  33. HYDROLANT 1434/092009-07-31 → 2009-08-01
    Seismic survey in progress until 040259Z aug by M/V western neptune towing 12 3.5 mile long cables in area…
  34. HYDROLANT 1432/092009-07-30 → 2009-09-30
    Pipeline operations 010800Z aug to 302000Z sep by M/V seven navica and M/V normand seven along trackline…
  35. HYDROLANT 1431/092009-07-30 → 2009-08-01
    Seismic survey in progress until 31 jul by M/V discoverer towing 10000 meter long cables in area bound by…
  36. HYDROLANT 1424/092009-07-30 → 2009-07-30
    Seismic survey in progress until 03 aug by M/V discoverer towing 10000 meter long cables in area bound by…
  37. HYDROLANT 1423/092009-07-30 → 2009-08-08
    Seismic survey 300300Z jul to 080259Z aug by M/V ocean europe and M/V sanco star in area bound by 22-22.72S…
  38. HYDROLANT 1422/092009-07-30 → 2009-07-31
    Seismic survey 300300Z jul to 080259Z aug by M/V western neptune towing 12 3.5 mile long cables in area…
  39. HYDROLANT 1420/092009-07-30 → 2009-08-08
    Seismic survey 300300Z jul to 080259Z aug by M/V ramform sovereing towing 14 8100 meter long cables in area…
  40. HYDROLANT 1413/092009-07-29 → 2009-07-30
    Underwater cable operations 010800Z aug to 302000Z sep by M/V seven navica and M/V normand seven along…
  41. HYDROLANT 1410/092009-07-29 → 2009-07-30
    Seismic survey 29 jul thru 01 aug by M/V discoverer towing 10000 meter long cables in area bound by 11-50S…
  42. HYDROLANT 1392/092009-07-27 → 2009-07-31
    Seismic survey in progress until 31 jul by M/V toisa vigilante towing two mile long cable in area bound by…
  43. HYDROLANT 1389/092009-07-27 → 2009-08-04
    Seismic survey in progress until 03 aug by M/V ramform valiant towing ten 8100 meter long cables in area…
  44. HYDROLANT 1377/092009-07-25 → 2009-07-29
    Seismic survey 26 thru 28 jul by M/V discoverer towing 10000 meter long cables in area bound by 11-50S…
  45. HYDROLANT 1375/092009-07-25 → 2009-07-30
    Seismic survey 250300Z to 300259Z jul by M/V ocean europe and M/V sanco star in area bound by 22-22.72S…
  46. HYDROLANT 1373/092009-07-24 → 2009-07-30
    Seismic survey 250300Z to 300259Z jul by M/V western neptune towing 12 3.5 mile long cables in area bound by…
  47. HYDROLANT 1372/092009-07-24 → 2009-07-30
    Seismic survey 250300Z to 300259Z jul by M/V ocean surveyor towing 400 meter long cable in area bound by…
  48. HYDROLANT 1371/092009-07-24 → 2009-07-27
    Seismic survey in progress until 29 jul by M/V toisa vigilante towing two mile long cable in area bound by…
  49. HYDROLANT 1352/092009-07-21 → 2009-07-24
    Seismic survey in progress until 24 jul by M/V toisa vigilante towing two mile long cable in area bound by…
  50. HYDROLANT 1343/092009-07-19 → 2009-07-27
    Seismic survey in progress until 26 jul by M/V ramform valiant towing ten 8100 meter long cables in area…

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 39 · seahazards