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)
J
F
M
A
M
J
J
A
S
O
N
D
Other hazards in the South Atlantic Ocean
Archive · 5,170 cancelled
- HYDROLANT 899/122012-04-28 → 2012-05-05Seismic survey in progress until 050259Z may by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 870/122012-04-21 → 2012-04-28Seismic survey in progress until 280259Z apr by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 869/122012-04-21 → 2012-04-28Seismic survey in progress until 280259Z apr by M/V nps ramform sovereing towing 14 8100 meter long cables…Brazil-south Coast
- HYDROLANT 868/122012-04-21 → 2012-04-28Seismic survey in progress until 280259Z apr by M/V nps sanco star and M/V ocean europe towing 300 meter…Brazil-southeast Coast
- HYDROLANT 817/122012-04-13 → 2012-04-21Seismic survey in progress until 210259Z apr by M/V nps ramform sovereing towing 14 8100 meter long cables…Brazil-south Coast
- HYDROLANT 816/122012-04-13 → 2012-04-21Seismic survey in progress until 210259Z apr by M/V nps sanco star and M/V ocean europe towing 300 meter…Brazil-southeast Coast
- HYDROLANT 815/122012-04-13 → 2012-04-21Seismic survey in progress until 210259Z apr by M/V nps oceanic phoenix towing 12 cables in area bound by…Brazil-southeast Coast
- HYDROLANT 760/122012-04-06 → 2012-04-13Seismic survey in progress until 130259Z apr by M/V nps sanco star and M/V ocean europe towing 300 meter…Brazil-southeast Coast
- HYDROLANT 758/122012-04-06 → 2012-04-13Seismic survey in progress until 130300Z apr by M/V nps ramform sovereing towing 14 8100 meter long cables…Brazil-south Coast
- HYDROLANT 757/122012-04-06 → 2012-04-13Seismic survey in progress until 130259Z apr by M/V nps oceanic phoenix towing 12 cables in area bound by…Brazil-southeast Coast
- HYDROLANT 750/122012-04-05 → 2012-04-10Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. in progress until 05 apr along trackline…Brazil-north Coast
- HYDROLANT 724/122012-04-01 → 2012-04-06Seismic survey in progress until 070259Z apr by M/V nps oceanic phoenix towing 12 five mile long cables in…Brazil-southeast Coast
- HYDROLANT 723/122012-04-01 → 2012-04-06Seismic survey in progress until 070259Z apr by M/V nps ramform sovereing towing 14 8100 meter long cables…Brazil-south Coast
- HYDROLANT 721/122012-04-01 → 2012-04-06Seismic survey in progress until 070259Z apr by M/V nps wg cook towing 12 five mile long cables in area…Brazil-southeast Coast
- HYDROLANT 718/122012-03-31 → 2012-04-06Seismic survey in progress until 070259Z apr by M/V ocean europe towing 300 meter long cables in area bound…Brazil-southeast Coast
- HYDROLANT 717/122012-03-31 → 2012-03-05Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. in progress until 31 mar along trackline…Brazil-north Coast
- HYDROLANT 682/122012-03-27 → 2012-04-01Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. in progress until 28 mar along trackline…Brazil-north Coast
- HYDROLANT 665/122012-03-25 → 2012-03-31Seismic survey in progress until 310259Z mar by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 664/122012-03-25 → 2012-03-31Seismic survey in progress until 310259Z mar by M/V nps ramform sovereing towing 14 8100 meter long cables…Brazil-south Coast
- HYDROLANT 662/122012-03-25 → 2012-03-31Seismic survey in progress until 310259Z mar by M/V ocean europe towing 300 meter long cables in area bound…Brazil-southeast Coast
- HYDROLANT 657/122012-03-24 → 2012-03-27Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. in progress along trackline between…Brazil-north Coast
- HYDROLANT 627/122012-03-21 → 2012-03-25Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. in progress along trackline between…Brazil-north Coast
- HYDROLANT 617/122012-03-17 → 2012-03-24Seismic survey in progress until 240259Z mar by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 616/122012-03-17 → 2012-03-24Seismic survey in progress until 240259Z mar by M/V nps ramform sovereing towing 14 8100 meter long cables…Brazil-south Coast
- HYDROLANT 615/122012-03-17 → 2012-03-24Seismic survey in progress until 240259Z mar by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 614/122012-03-17 → 2012-03-24Seismic survey in progress until 240259Z mar by M/V nps oceanic phoenix towing 12 five mile long cables in…Brazil-southeast Coast
- HYDROLANT 613/122012-03-17 → 2012-03-24Seismic survey in progress until 240259Z mar by M/V ocean europe towing 300 meter long cables in area bound…Brazil-southeast Coast
- HYDROLANT 610/122012-03-17 → 2012-03-21Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. in progress along trackline between…Brazil-north Coast
- HYDROLANT 599/122012-03-15 → 2012-03-17Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. in progress along trackline between…Brazil-north Coast
- HYDROLANT 598/122012-03-14 → 2012-03-17Seismic survey in progress until 170259Z mar by M/V polar explorer towing 12 cables in area bound by…Brazil-southeast Coast
- HYDROLANT 573/122012-03-11 → 2012-03-15Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. in progress along trackline between…Brazil-north Coast
- HYDROLANT 566/122012-03-10 → 2012-03-17Seismic survey in progress until 170259Z mar by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 563/122012-03-10 → 2012-03-17Seismic survey in progress until 170259Z mar by M/V nps oceanic phoenix towing 12 five mile long cables in…Brazil-southeast Coast
- HYDROLANT 562/122012-03-10 → 2012-03-17Seismic survey in progress until 170259Z mar by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 561/122012-03-10 → 2012-03-17Seismic survey in progress until 170259Z mar by M/V nps ramform sovereing towing 14 8100 meter long cables…Brazil-south Coast
- HYDROLANT 560/122012-03-10 → 2012-03-17Seismic survey in progress until 170259Z mar by M/V nps cgg symphony towing ten three mile long cables in…Brazil-south Coast
- HYDROLANT 557/122012-03-10 → 2012-03-11Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. in progress along trackline between…Brazil-north Coast
- HYDROLANT 519/122012-03-07 → 2012-03-12Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. in progress along trackline between…Brazil-north Coast
- HYDROLANT 517/122012-03-07 → 2012-03-07Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. in progress along trackline between…Brazil-north Coast
- HYDROLANT 514/122012-03-07 → 2012-03-09Seismic survey by M/V discoverer towing 5.4 mile long cables: a. 07 mar in area bound by 15-05S 036-50W,…Brazil-east Coast
- HYDROLANT 510/122012-03-06 → 2012-03-07Seismic survey 07 mar by M/V discoverer towing 5.4 mile long cables in area bound by 15-16S 036-42W, 15-25S…Brazil-east Coast
- HYDROLANT 490/122012-03-04 → 2012-03-07Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. in progress along trackline between…Brazil-north Coast
- HYDROLANT 486/122012-03-03 → 2012-03-10Seismic survey in progress until 100259Z mar by M/V nps oceanic phoenix towing 12 five mile long cables in…Brazil-southeast Coast
- HYDROLANT 482/122012-03-03 → 2012-03-04Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. 03 mar along trackline between 01-54.23S…Brazil-north Coast
- HYDROLANT 476/122012-03-02 → 2012-03-10Seismic survey in progress until 100259Z mar by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 475/122012-03-02 → 2012-03-10Seismic survey in progress until 100259Z mar by M/V nps ramform sovereing towing 14 8100 meter long cables…Brazil-south Coast
- HYDROLANT 473/122012-03-02 → 2012-03-10Seismic survey in progress until 100259Z mar by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 470/122012-03-02 → 2012-03-03Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. 02 mar along trackline between 01-54.23S…Brazil-north Coast
- HYDROLANT 462/122012-03-01 → 2012-03-07Seismic survey by M/V discoverer towing 5.4 mile long cables: a. 01 mar in area between 13-49.00S 13-59.00S…Brazil-east Coast
- HYDROLANT 442/122012-02-28 → 2012-03-02Seismic survey by M/V hawk explorer towing 5.4 mile long cable: a. 27 feb along trackline between 02-17.95S…Brazil-north 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.