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 1113/112011-07-07 → 2011-07-15Seismic survey in progress until 150259Z jul by M/V western neptune towing 12 3.5 mile long cables and geco…Brazil-southeast Coast
- HYDROLANT 1088/112011-07-01 → 2011-07-08Cable operations in progress until 14 jul by cableship ile de brehat in area bound by 04-36.7S 011-22.1E,…Eastern South Atlantic · Congo
- HYDROLANT 1074/112011-06-29 → 2011-07-07Seismic survey in progress until 070259Z jul by M/V ramform valiant towing 14 8100 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 1073/112011-06-29 → 2011-07-07Seismic survey in progress until 070259Z jul by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 1072/112011-06-29 → 2011-07-07Seismic survey in progress until 070259Z jul by M/V western neptune towing 12 3.5 mile long cables and geco…Brazil-southeast Coast
- HYDROLANT 1071/112011-06-29 → 2011-07-07Seismic survey in progress until 070259Z jul by M/V western monarch towing three mile long cables in area…Brazil-east Coast
- HYDROLANT 1024/112011-06-21 → 2011-06-29Seismic survey 210300Z to 290259Z jun by M/V western monarch towing three mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1023/112011-06-21 → 2011-06-29Seismic survey 210300Z to 290259Z jun by M/V western neptune towing 12 3.5 mile long cables in area bound by…Brazil-southeast Coast
- HYDROLANT 1022/112011-06-21 → 2011-06-29Seismic survey 210300Z to 290259Z jun by M/V ramform sovereing towing 14 8100 meter long cables in area…Brazil-south Coast
- HYDROLANT 1013/112011-06-19 → 2011-07-01Cable operations 20 jun thru 03 jul by cableship ile de brehat in area bound by 04-36.7S 011-22.1E, 04-39.7S…Eastern South Atlantic · Congo
- HYDROLANT 1009/112011-06-18 → 2011-06-22Seismic survey in progress until 220259Z jun by M/V ramform valiant towing 14 8100 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 998/112011-06-15 → 2011-06-25Seismic survey in progress until 01 aug by M/V andrew charles in area bound by 26-12.11S 048-21.25W,…Brazil-south Coast
- HYDROLANT 997/112011-06-15 → 2011-06-21Seismic survey in progress until 210259Z jun by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 996/112011-06-15 → 2011-06-21Seismic survey in progress until 210259Z jun by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 995/112011-06-15 → 2011-06-21Seismic survey in progress until 210259Z jun by M/V western monarch towing three mile long cables in area…Brazil-east Coast
- HYDROLANT 961/112011-06-09 → 2011-06-14Seismic survey in progress until 140259Z jun by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 960/112011-06-09 → 2011-06-14Seismic survey in progress until 140259Z jun by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 959/112011-06-09 → 2011-06-13Seismic survey in progress until 14 jun by M/V ramform valiant towing ten 9000 meter long cables in area…Brazil-east Coast
- HYDROLANT 958/112011-06-09 → 2011-06-14Seismic survey in progress until 140259Z jun by M/V western monarch towing three mile long cables in area…Brazil-east Coast
- HYDROLANT 952/112011-06-07 → 2011-06-11Cable repair operations 07 thru 10 jun by cableship ile de brehat vicinity 01-04.69S 006-15.80EGulf of Guinea
- HYDROLANT 939/112011-06-05 → 2011-06-08Seismic survey in progress until 07 jun by M/V ramform valiant towing ten 9000 meter long cables in area…Brazil-east Coast
- HYDROLANT 923/112011-06-03 → 2011-06-07Seismic survey in progress until 070259Z jun by M/V western monarch towing three mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 922/112011-06-03 → 2011-06-07Seismic survey in progress until 070259Z jun by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 920/112011-06-02 → 2011-06-07Seismic survey in progress until 070259Z jun by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 915/112011-06-01 → 2011-06-04Seismic survey in progress until 03 jun by M/V ramform valiant towing ten 9000 meter long cables in area…Brazil-east Coast
- HYDROLANT 882/112011-05-26 → 2011-05-31Seismic survey in progress until 30 may by M/V ramform valiant towing ten 9000 meter long cables in area…Brazil-east Coast
- HYDROLANT 877/112011-05-25 → 2011-06-01Seismic survey in progress until 010259Z jun by M/V geco diamond towing 250 meter long cable in area bound…Brazil-southeast Coast
- HYDROLANT 876/112011-05-25 → 2011-06-01Seismic survey in progress until 010259Z jun by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 875/112011-05-25 → 2011-06-01Seismic survey in progress until 010259Z jun by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 874/112011-05-25 → 2011-06-01Seismic survey in progress until 010259Z jun by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 865/112011-05-22 → 2011-05-26Seismic survey in progress until 25 may by M/V ramform valiant towing ten 9000 meter long cables in area…Brazil-east Coast
- HYDROLANT 862/112011-05-22 → 2011-05-25Seismic survey in progress until 250259Z may by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 861/112011-05-22 → 2011-05-25Seismic survey in progress until 250259Z may by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 858/112011-05-21 → 2011-05-25Seismic survey in progress until 250259Z may by M/V geco diamond towing 250 meter long cable in area bound…Brazil-southeast Coast
- HYDROLANT 857/112011-05-21 → 2011-05-25Seismic survey in progress until 250259Z may by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 852/112011-05-20 → 2011-05-31Cable laying operations in progress until 05 jun by cableship ile de brehat along trackline joining…Eastern South Atlantic
- HYDROLANT 840/112011-05-18 → 2011-05-23Seismic survey in progress until 22 may by M/V ramform valiant towing ten 9000 meter long cables in area…Brazil-east Coast
- HYDROLANT 836/112011-05-17 → 2011-05-22Seismic survey in progress until 240259Z may by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 835/112011-05-17 → 2011-05-22Seismic survey in progress until 240259Z may by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 831/112011-05-16 → 2011-05-18Seismic survey in progress until 17 may by M/V ramform valiant towing ten 9000 meter long cables in area…Brazil-east Coast
- HYDROLANT 801/112011-05-11 → 2011-05-27Seismic survey in progress until 271800Z may by M/V geoholm towing 2400 meter long cable in area bound by…Eastern South Atlantic
- HYDROLANT 800/112011-05-11 → 2011-05-20Cable laying operations in progress until further notice by cableship ile de brehat along trackline between…Eastern South Atlantic · Angola
- HYDROLANT 792/112011-05-10 → 2011-05-17Seismic survey 100300Z to 170259Z may by M/V western neptune towing 12 3.5 mile long cables and M/V geco…Brazil-southeast Coast
- HYDROLANT 791/112011-05-10 → 2011-05-14Seismic survey 100300Z to 140259Z may by M/V ramform sovereing towing 14 8100 meter long cables in area…Brazil-south Coast
- HYDROLANT 790/112011-05-10 → 2011-05-17Seismic survey 100300Z to 170259Z may by M/V western monarch towing three mile long cables in area bound by…Brazil-southeast Coast
- HYDROLANT 789/112011-05-10 → 2011-05-16Seismic survey in progress until 15 may by M/V ramform valiant towing ten 9000 meter long cables in area…Brazil-east Coast
- HYDROLANT 783/112011-05-09 → 2011-05-11Seismic survey in progress until further notice by M/V geoholm towing 2400 meter long cable in area bound by…Eastern South Atlantic
- HYDROLANT 776/112011-05-07 → 2011-05-09Seismic survey in progress until 27 may by M/V geoholm towing 2400 meter long cable vicinity of trackline…Eastern South Atlantic
- HYDROLANT 770/112011-05-06 → 2011-07-22Seismic survey in progress until further notice by M/V wg cook towing ten 4.5 mile long cables in area bound…Eastern South Atlantic · Angola
- HYDROLANT 749/112011-05-03 → 2011-05-10Seismic survey in progress until 100259Z may by M/V western neptune towing 12 3.5 mile long cables and M/V…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.