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
- HYDROLANT 1497/26in force2026-08-04Survey operations by cableship Nautilus are in progress near Angola until 22 August; wide berth requested.South Atlantic · Angola
- NAVAREA II 269/26in force2026-07-02Seismic survey by vessel Ramform Victory is in progress off Pointe Noire until further notice; wide berth requested.Pointe Noire
Longest in force
- NAVAREA II 269/26in force2026-07-02 · 51 dSeismic survey by vessel Ramform Victory is in progress off Pointe Noire until further notice; wide berth requested.Pointe Noire
- HYDROLANT 1497/26in force2026-08-04 · 18 dSurvey operations by cableship Nautilus are in progress near Angola until 22 August; wide berth requested.South Atlantic · Angola
By month (all years)
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Other hazards in the South Atlantic Ocean
Archive · 5,170 cancelled
- HYDROLANT 748/112011-05-03 → 2011-05-10Seismic survey in progress until 100259Z may by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 747/112011-05-03 → 2011-05-10Seismic survey in progress until 100259Z may by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 738/112011-05-01 → 2011-05-09Seismic survey in progress until 08 may by M/V ramform valiant towing ten 9000 meter long cables in area…Brazil-east Coast
- HYDROLANT 710/112011-04-26 → 2011-05-01Seismic survey in progress until 30 apr by M/V ramform valiant towing ten 9000 meter long cables in area…Brazil-east Coast
- HYDROLANT 709/112011-04-26 → 2011-05-03Seismic survey in progress until 030259Z may by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 708/112011-04-26 → 2011-05-03Seismic survey in progress until 030259Z may by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 707/112011-04-26 → 2011-05-03Seismic survey in progress until 030259Z may by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 682/112011-04-22 → 2011-04-26Seismic survey in progress until 260259Z apr by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 667/112011-04-20 → 2011-04-26Seismic survey in progress until 260259Z apr by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 666/112011-04-20 → 2011-04-26Seismic survey in progress until 260259Z apr by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 665/112011-04-20 → 2011-04-26Seismic survey in progress until 260259Z apr by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 640/112011-04-17 → 2011-04-20Seismic survey by M/V ramform valiant towing ten 9000 meter long cables: a. in progress until 182359Z apr in…Brazil-east Coast
- HYDROLANT 627/112011-04-15 → 2011-04-20Seismic survey in progress until 200259Z apr by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 626/112011-04-15 → 2011-04-20Seismic survey in progress until 200259Z apr by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 625/112011-04-15 → 2011-04-20Seismic survey in progress until 200259Z apr by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 624/112011-04-15 → 2011-04-20Seismic survey in progress until 200259Z apr by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 596/112011-04-10 → 2011-04-17Seismic survey in progress until 16 apr by M/V ramform valiant towing ten 9000 meter long cables in area…Brazil-east Coast
- HYDROLANT 579/112011-04-06 → 2011-04-10Seismic survey in progress until 100259Z apr by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 578/112011-04-06 → 2011-04-10Seismic survey in progress until 100259Z apr by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 577/112011-04-06 → 2011-04-10Seismic survey in progress until 100259Z apr by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 564/112011-04-04 → 2011-04-07Seismic survey by M/V ramform valiant towing ten 9000 meter long cables: a. 01, 02 and 06 apr in area bound…Brazil-east Coast
- HYDROLANT 548/112011-04-01 → 2011-04-04Seismic survey 01, 02 and 06 apr by M/V ramform valiant towing ten 9000 meter long cables in area bound by…Brazil-east Coast
- HYDROLANT 520/112011-03-29 → 2011-04-05Seismic survey in progress until 050259Z apr by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 519/112011-03-29 → 2011-04-05Seismic survey in progress until 050259Z apr by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 518/112011-03-29 → 2011-04-05Seismic survey in progress until 050259Z apr by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 517/112011-03-29 → 2011-04-05Seismic survey in progress until 050259Z apr by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 479/112011-03-23 → 2011-03-29Seismic survey in progress until 290259Z mar by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 477/112011-03-23 → 2011-03-29Seismic survey in progress until 290259Z mar by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 476/112011-03-23 → 2011-03-29Seismic survey in progress until 290259Z mar by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 475/112011-03-23 → 2011-03-29Seismic survey in progress until 290259Z mar by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 465/112011-03-22 → 2011-03-26Seismic survey in progress until 260259Z mar by M/V ramform valiant towing five mile long cables in area…Brazil-east Coast
- HYDROLANT 437/112011-03-17 → 2011-03-23Seismic survey in progress until 230259Z mar by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 435/112011-03-17 → 2011-03-23Seismic survey in progress until 230259Z mar by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 434/112011-03-17 → 2011-03-23Seismic survey in progress until 230259Z mar by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 433/112011-03-17 → 2011-03-23Seismic survey in progress until 230259Z mar by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 401/112011-03-11 → 2011-03-17Seismic survey in progress until 170259Z mar by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 399/112011-03-11 → 2011-03-17Seismic survey in progress until 170259Z mar by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 398/112011-03-11 → 2011-03-17Seismic survey in progress until 170259Z mar by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 397/112011-03-11 → 2011-03-17Seismic survey in progress until 170259Z mar by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 348/112011-03-01 → 2011-03-11Seismic survey in progress until 110259Z mar by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 347/112011-03-01 → 2011-03-11Seismic survey in progress until 110259Z mar by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 346/112011-03-01 → 2011-03-11Seismic survey in progress until 110259Z mar by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 345/112011-03-01 → 2011-03-11Seismic survey in progress until 110259Z mar by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 308/112011-02-22 → 2011-03-01Seismic survey in progress until 010259Z mar by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 307/112011-02-22 → 2011-03-01Seismic survey in progress until 010259Z mar by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 306/112011-02-22 → 2011-03-01Seismic survey in progress until 010259Z mar by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 305/112011-02-22 → 2011-03-01Seismic survey in progress until 010259Z mar by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 302/112011-02-20 → 2011-02-22Seismic survey in progress until 220159Z feb by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 301/112011-02-20 → 2011-02-22Seismic survey in progress until 220159Z feb by M/V veritas vantage towing eight 7000 meter long cables in…Brazil-south Coast
- HYDROLANT 279/112011-02-15 → 2011-02-22Seismic survey in progress until 220159Z feb by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
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.