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 426/122012-02-25 → 2012-02-28Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. 26 feb along trackline between 02-17.57S…Brazil-north Coast
- HYDROLANT 420/122012-02-24 → 2012-03-02Seismic survey in progress until 020259Z mar by M/V nps ramform sovereing towing 14 8100 meter long cables…Brazil-south Coast
- HYDROLANT 419/122012-02-24 → 2012-03-02Seismic survey in progress until 020259Z mar by M/V nps cgg symphony towing ten three mile long cables in…Brazil-south Coast
- HYDROLANT 418/122012-02-24 → 2012-03-02Seismic survey in progress until 020259Z mar by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 417/122012-02-24 → 2012-03-02Seismic survey in progress until 020259Z mar by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 416/122012-02-24 → 2012-02-26Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. in progress along trackline between…Brazil-north Coast
- HYDROLANT 400/122012-02-21 → 2012-02-26Seismic survey by M/V discoverer towing 5.4 mile long cables: a. in progess in area bound by 13-31S 036-48W,…Brazil-east Coast
- HYDROLANT 394/122012-02-20 → 2012-05-07Seismic survey in progress until further notice by M/V ramform viking towing 2.2 mile long cable in area…Eastern South Atlantic · Angola
- HYDROLANT 381/122012-02-17 → 2012-02-20Seismic survey in progress until further notice by M/V ramform viking towing 2.2 mile long cable in area…Eastern South Atlantic · Angola
- HYDROLANT 378/122012-02-16 → 2012-02-21Seismic survey by M/V discoverer towing 5.4 mile long cables: a. 16 feb in area bound by 11-53S 036-03W,…Brazil-east Coast
- HYDROLANT 373/122012-02-15 → 2012-02-19Seismic survey in progress until 190159Z feb by M/V nps ramform challenger towing 12 4500 meter long cables…Brazil-southeast Coast
- HYDROLANT 372/122012-02-15 → 2012-02-24Seismic survey in progress until 240159Z feb by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 371/122012-02-15 → 2012-02-24Seismic survey by M/V nps oceanic phoenix towing 12 five mile long cables: a. 150200Z to 190159Z feb in area…Brazil-southeast Coast
- HYDROLANT 370/122012-02-15 → 2012-02-24Seismic survey in progress until 240159Z feb by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 369/122012-02-15 → 2012-02-24Seismic survey in progress until 240159Z feb by M/V nps cgg symphony towing ten three mile long cables in…Brazil-south Coast
- HYDROLANT 368/122012-02-15 → 2012-02-24Seismic survey in progress until 240159Z feb by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 358/122012-02-13 → 2012-02-16Seismic survey in progress by M/V discoverer towing 5.4 mile long cable: a. 13 feb in area between 10-45S…Brazil-east Coast
- HYDROLANT 337/122012-02-10 → 2012-02-13Seismic survey by M/V discoverer towing 5.4 mile long cable: a. 10 feb in area bound by 11-45S 036-00W,…Brazil-east Coast
- HYDROLANT 335/122012-02-10 → 2012-02-13Seismic survey by M/V polar explorer towing 5.4 mile long cable: a. 10 feb in area between 02-02.32S…Brazil-north Coast
- HYDROLANT 320/122012-02-08 → 2012-02-15Seismic survey in progress until 150159Z feb by M/V nps ramform challenger towing 12 4500 meter long cables…Brazil-southeast Coast
- HYDROLANT 319/122012-02-08 → 2012-02-15Seismic survey in progress until 150159Z feb by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 318/122012-02-08 → 2012-02-15Seismic survey in progress until 150159Z feb by M/V nps oceanic phoenix towing 12 five mile long cables in…Brazil-southeast Coast
- HYDROLANT 317/122012-02-08 → 2012-02-15Seismic survey in progress until 150159Z feb by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 316/122012-02-08 → 2012-02-15Seismic survey in progress until 150159Z feb by M/V nps cgg symphony towing ten three mile long cables in…Brazil-south Coast
- HYDROLANT 315/122012-02-08 → 2012-02-15Seismic survey in progress until 150159Z feb by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 277/122012-02-03 → 2012-04-16Pipeline operations in progress until 15 apr by M/V normand clipper, M/V solitaire and M/V deep constructor…Brazil-southeast Coast
- HYDROLANT 271/122012-02-02 → 2012-02-04Seismic survey by M/V polar explorer towing 5.4 mile long cable: a. 01 feb in area bound by 00-07.20S…Brazil-north Coast
- HYDROLANT 270/122012-02-01 → 2012-02-08Seismic survey in progress until 080159Z feb by M/V nps ramform challenger towing 12 4500 meter long cables…Brazil-southeast Coast
- HYDROLANT 268/122012-02-01 → 2012-02-01Seismic survey in progress until 080159Z feb by M/V nps ramform challenger towing 12 4500 meter long cables…Brazil-southeast Coast
- HYDROLANT 267/122012-02-01 → 2012-02-08Seismic survey in progress until 080159Z feb by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 266/122012-02-01 → 2012-02-08Seismic survey in progress until 080159Z feb by M/V nps oceanic phoenix towing 12 five mile long cables in…Brazil-southeast Coast
- HYDROLANT 265/122012-02-01 → 2012-02-08Seismic survey in progress until 080159Z feb by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 264/122012-02-01 → 2012-02-08Seismic survey in progress until 080159Z feb by M/V nps cgg symphony towing ten three mile long cables in…Brazil-south Coast
- HYDROLANT 263/122012-02-01 → 2012-02-08Seismic survey in progress until 080159Z feb by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 250/122012-01-31 → 2012-02-03Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. 31 jan and 01 feb in area bound by…Brazil-north Coast
- HYDROLANT 230/122012-01-28 → 2012-02-03Pipeline operations in progress until 15 apr by M/V normand clipper along trackline between 21-54.93S…Brazil-southeast Coast
- HYDROLANT 228/122012-01-28 → 2012-02-01Seismic survey by M/V polar explorer towing 5.4 mile long cable: a. 28 jan along trackline between 00-38.77S…Brazil-north Coast
- HYDROLANT 215/122012-01-27 → 2012-02-01Seismic survey in progress until 010159Z feb by M/V nps ramform challenger towing 12 4500 meter long cables…Brazil-southeast Coast
- HYDROLANT 212/122012-01-26 → 2012-06-15Seismic survey in progress until further notice by M/V oceanic endeavour in areas bound by: a. 06-13.45S…Eastern South Atlantic · Angola
- HYDROLANT 202/122012-01-25 → 2012-02-01Seismic survey in progress until 010159Z feb by M/V nps oceanic phoenix towing 12 five mile long cables in…Brazil-south Coast
- HYDROLANT 201/122012-01-25 → 2012-02-01Seismic survey in progress until 010159Z feb by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 200/122012-01-25 → 2012-02-01Seismic survey in progress until 010159Z feb by M/V nps cgg symphony towing ten three mile long cables in…Brazil-east Coast
- HYDROLANT 199/122012-01-25 → 2012-02-01Seismic survey in progress until 010159Z feb by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 196/122012-01-25 → 2012-01-29Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. 25 jan in area bound by 03-18.48S…Brazil-north Coast
- HYDROLANT 177/122012-01-22 → 2012-01-27Seismic survey by M/V polar explorer towing 5.4 mile long cable: a. 22 jan along trackline between 00-00.75S…Brazil-north Coast
- HYDROLANT 175/122012-01-22 → 2012-01-22Seismic survey by M/V polar explorer towing 5.4 mile long cable: a. 22 jan along trackline between 00-00.75S…Brazil-north Coast
- HYDROLANT 173/122012-01-22 → 2012-01-25Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. 21 jan in area bound by 02-17.23S…Brazil-north Coast
- HYDROLANT 157/122012-01-20 → 2012-01-24Seismic survey in progress until 240159Z jan by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 155/122012-01-20 → 2012-01-24Seismic survey in progress until 240159Z jan by M/V nps oceanic phoenix towing 12 five mile long cables in…Brazil-southeast Coast
- HYDROLANT 154/122012-01-20 → 2012-01-24Seismic survey in progress until 240159Z jan by M/V nps ramform sovereing towing 14 8100 meter long cables…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.