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 205/102010-02-02 → 2010-02-13
    Seismic survey in progress until 130159Z feb by M/V ramform sovereing towing 14 8100 meter long cables in…
    Brazil-south Coast
  2. HYDROLANT 203/102010-02-02 → 2010-02-13
    Seismic survey in progress until 130159Z feb by M/V western neptune towing 12 3.5 mile long cables and M/V…
    Brazil-southeast Coast
  3. HYDROLANT 202/102010-02-02 → 2010-02-04
    Seismic survey by M/V veritas vantage towing 5.4 mile long cable: a. in progress until 04 feb in area bound…
    Brazil-northeast Coast
  4. HYDROLANT 194/102010-01-31 → 2010-02-02
    Seismic survey by M/V veritas vantage towing 5.4 mile long cable: a. in progress until 02 feb in area bound…
    Brazil-northeast Coast
  5. HYDROLANT 183/102010-01-29 → 2010-07-17
    Seismic survey 01 feb until further notice by M/V randform guard in area bound by 06-10.18S 011-00.46E,…
    Eastern South Atlantic
  6. HYDROLANT 172/102010-01-28 → 2010-01-31
    Seismic survey in progress until 02 feb by M/V veritas vantage towing 5.4 mile long cable in area bound by…
    Brazil-northeast Coast
  7. HYDROLANT 160/102010-01-27 → 2010-01-28
    Seismic survey by M/V veritas vantage towing 5.4 mile long cable: a. in progress until 29 jan in area bound…
    Brazil-northeast Coast
  8. HYDROLANT 154/102010-01-25 → 2010-09-25
    Nga chart 24240 (5TH ed)
    Brazil-north Coast
  9. HYDROLANT 148/102010-01-23 → 2010-01-30
    Seismic survey in progress until 300159Z jan by M/V ramform sovereing towing 14 8100 meter long cables in…
    Brazil-south Coast
  10. HYDROLANT 144/102010-01-23 → 2010-01-30
    Seismic survey in progress until 300159Z jan by M/V western neptune towing 12 3.5 mile long cables and M/V…
    Brazil-southeast Coast
  11. HYDROLANT 143/102010-01-23 → 2010-01-30
    Seismic survey in progress until 300159Z jan by M/V ocean europe and M/V sanco star in area bound by…
    Brazil-southeast Coast
  12. HYDROLANT 142/102010-01-23 → 2010-01-27
    Seismic survey in progress until 28 jan by M/V veritas vantage towing 5.4 mile long cable in area bound by…
    Brazil-northeast Coast
  13. HYDROLANT 126/102010-01-21 → 2010-01-25
    Seismic survey in progress until 24 jan by M/V veritas vantage towing eight four mile long cables in area…
    Brazil-northeast Coast
  14. HYDROLANT 99/102010-01-16 → 2010-01-23
    Seismic survey in progress until 230159Z jan by M/V ocean europe and M/V sanco star in area bound by…
    Brazil-southeast Coast
  15. HYDROLANT 98/102010-01-16 → 2010-01-23
    Seismic survey in progress until 230159Z jan by M/V western neptune towing 12 3.5 mile long cables and M/V…
    Brazil-southeast Coast
  16. HYDROLANT 97/102010-01-16 → 2010-01-23
    Seismic survey in progress until 230159Z jan by M/V ramform sovereing towing 14 8100 meter long cables in…
    Brazil-south Coast
  17. HYDROLANT 85/102010-01-15 → 2010-01-21
    Seismic survey in progress until 20 jan by M/V veritas vantage towing eight four mile long cables in area…
    Brazil-south Coast
  18. HYDROLANT 56/102010-01-12 → 2010-01-15
    Seismic survey in progress until 16 jan by M/V veritas vantage towing eight four mile long cables in area…
    Brazil-northeast Coast
  19. HYDROLANT 48/102010-01-10 → 2010-01-12
    Seismic survey in progress until 15 jan by M/V veritas vantage towing 5.4 mile long cable in area bound by…
    Brazil-northeast Coast
  20. HYDROLANT 33/102010-01-08 → 2010-01-16
    Seismic survey in progress until 160259Z jan by M/V ocean europe and M/V sanco star in area bound by…
    Brazil-southeast Coast
  21. HYDROLANT 32/102010-01-08 → 2010-01-16
    Seismic survey in progress until 160259Z jan by M/V ramform sovereing towing 14 8100 meter long cables in…
    Brazil-south Coast
  22. HYDROLANT 31/102010-01-08 → 2010-01-16
    Seismic survey in progress until 160259Z jan by M/V western neptune towing 12 3.5 mile long cables and M/V…
    Brazil-southeast Coast
  23. HYDROLANT 22/102010-01-06 → 2010-01-10
    Seismic survey in progress until 11 jan by M/V veritas vantage towing 5.4 mile long cable in area bound by…
    Brazil-northeast Coast
  24. HYDROLANT 13/102010-01-04 → 2010-01-06
    Seismic survey in progress until 07 jan by M/V veritas vantage towing 5.4 mile long cable in area bound by…
    Brazil-northeast Coast
  25. HYDROLANT 2536/092009-12-31 → 2010-01-08
    Seismic survey 310300Z dec to 080259Z jan 10 by M/V ramform sovereing towing 14 8100 meter long cables in…
  26. HYDROLANT 2535/092009-12-31 → 2010-01-08
    Seismic survey 310300Z dec to 080259Z jan 10 by M/V ocean europe and M/V sanco star in area bound by…
  27. HYDROLANT 2534/092009-12-31 → 2010-01-08
    Seismic survey 310300Z dec to 080259Z jan 10 by M/V western neptune towing 12 3.5 mile long cables and M/V…
  28. HYDROLANT 2520/092009-12-29 → 2010-01-04
    Seismic survey in progress until 03 jan 10 by M/V veritas vantage towing 5.4 mile long cable in area bound…
  29. HYDROLANT 2504/092009-12-25 → 2009-12-29
    Seismic survey in progress until 29 dec by M/V veritas vantage towing 5.4 mile long cable in area bound by…
  30. HYDROLANT 2493/092009-12-23 → 2009-12-31
    Seismic survey 230300Z to 310259Z dec
  31. HYDROLANT 2492/092009-12-23 → 2009-12-31
    Seismic survey 230300Z to 310259Z dec by M/V western neptune towing 12 3.5 mile long cables and M/V geco…
  32. HYDROLANT 2491/092009-12-23 → 2009-12-31
    Seismic survey 230300Z to 310259Z dec by M/V ocean europe and M/V sanco star in area bound by 21-59.42S…
  33. HYDROLANT 2490/092009-12-23 → 2009-12-28
    Seismic survey in progress until 27 dec by M/V veritas vantage towing 5.4 mile long cable in area bound by…
  34. HYDROLANT 2470/092009-12-19 → 2009-12-23
    Seismic survey in progress until 24 dec by M/V veritas vantage towing 5.4 mile long cable in area bound by…
  35. HYDROLANT 2469/092009-12-19 → 2009-12-23
    Seismic survey in progress until 230259Z dec by M/V ocean europe and M/V sanco star in area bound by…
  36. HYDROLANT 2468/092009-12-19 → 2009-12-23
    Seismic survey in progress until 230259Z dec by M/V ramform sovereing towing four 8100 meter long cables in…
  37. HYDROLANT 2467/092009-12-19 → 2009-12-23
    Seismic survey in progress until 230259Z dec by M/V western neptune towing 12 3.5 mile long cables and M/V…
  38. HYDROLANT 2460/092009-12-18 → 2009-12-19
    Seismic survey in progress until 22 dec by M/V veritas vantage towing 5.4 mile long cable in area bound by…
  39. HYDROLANT 2450/092009-12-16 → 2009-12-18
    Seismic survey in progress until 20 dec by M/V veritas vantage towing 5.4 mile long cable in area bound by…
  40. HYDROLANT 2435/092009-12-14 → 2009-12-16
    Seismic survey in progress until 18 dec by M/V veritas vantage towing 5.4 mile long cable in area bound by…
  41. HYDROLANT 2423/092009-12-12 → 2009-12-18
    Seismic survey in progress until 17 dec by M/V veritas vantage towing 5.4 mile long cable in area bound by…
  42. HYDROLANT 2416/092009-12-12 → 2009-12-19
    Seismic survey 120300Z to 190259Z dec by M/V ramform sovereing towing four 8100 meter long cables in area…
  43. HYDROLANT 2414/092009-12-12 → 2009-12-19
    Seismic survey 120300Z to 190259Z dec by M/V ocean europe and M/V sanco star in area bound by 21-59.42S…
  44. HYDROLANT 2413/092009-12-12 → 2009-12-19
    Seismic survey 120300Z to 190259Z dec by M/V western neptune towing 12 3.5 mile long cables and M/V geco…
  45. HYDROLANT 2400/092009-12-10 → 2009-12-12
    Seismic survey in progress until 15 dec by M/V veritas vantage towing 5.4 mile long cable in area bound by…
  46. HYDROLANT 2393/092009-12-09 → 2009-12-15
    Seismic survey by M/V discoverer towing 10000 meter long cables: a. 09 dec in area bound by 09-10S 031-50W,…
  47. HYDROLANT 2390/092009-12-08 → 2009-12-09
    Seismic survey by M/V discoverer towing 10000 meter long cables: a. 08 dec in area bound by 09-00S 033-35W,…
  48. HYDROLANT 2385/092009-12-08 → 2009-12-10
    Seismic survey in progress until 12 dec by M/V veritas vantage towing 5.4 mile long cable in area bound by…
  49. HYDROLANT 2375/092009-12-06 → 2009-12-08
    Seismic survey in progress until 10 dec by M/V veritas vantage towing 5.4 mile long cable in area bound by…
  50. HYDROLANT 2361/092009-12-04 → 2009-12-08
    Seismic survey by M/V discoverer towing 10000 meter long cables: a. 04 dec in area bound by 07-40S 033-30W,…

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 36 · seahazards