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 278/112011-02-15 → 2011-02-22Seismic survey in progress until 220159Z feb by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 277/112011-02-15 → 2011-02-22Seismic survey in progress until 220159Z feb by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 275/112011-02-14 → 2011-02-17Cable laying operations in progress until further notice by cableship ile de brehat along trackline between…Eastern South Atlantic · Angola
- HYDROLANT 264/112011-02-14 → 2011-03-09Cable laying operations 16 feb until further notice by cableship ile de brehat along trackline joining…Eastern South Atlantic
- HYDROLANT 256/112011-02-12 → 2011-02-15Seismic survey in progress until 150159Z feb by M/V western monarch towing three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 242/112011-02-09 → 2011-02-15Seismic survey in progress until 150159Z feb by M/V veritas vantage towing eight 7000 meter long cables in…Brazil-south Coast
- HYDROLANT 240/112011-02-09 → 2011-02-15Seismic survey in progress until 150159Z feb by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 239/112011-02-09 → 2011-02-15Seismic survey in progress until 150159Z feb by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 238/112011-02-09 → 2011-02-15Seismic survey in progress until 150159Z feb by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 236/112011-02-08 → 2011-02-14Seismic survey in progress until further notice by M/V wg amundsen towing 4500 meter long cables in area…Eastern South Atlantic · Angola
- HYDROLANT 195/112011-02-01 → 2011-02-08Seismic survey in progress until 080159Z feb by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 194/112011-02-01 → 2011-02-08Seismic survey in progress until 080159Z feb by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 192/112011-02-01 → 2011-02-08Seismic survey in progress until 080159Z feb by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 162/112011-01-26 → 2011-02-01Seismic survey 260200Z jan to 010159Z feb by M/V western monarch towing 5556 meter long cables in area bound…Brazil-southeast Coast
- HYDROLANT 161/112011-01-26 → 2011-02-01Seismic survey in progress until 010159Z feb by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 160/112011-01-26 → 2011-02-01Seismic survey in progress until 010159Z feb by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-south Coast
- HYDROLANT 156/112011-01-26 → 2011-02-01Seismic survey in progress until 010159Z feb by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 138/112011-01-22 → 2011-01-25Seismic survey in progress until 24 jan by M/V wg tasman towing 8334 meter long cable in area bound by…Brazil-north Coast
- HYDROLANT 136/112011-01-21 → 2011-02-01Cable laying operations 22 jan thru 17 feb by cableship ile de brehat along trackline between 23-08.2S…Eastern South Atlantic · South Africa-west Coast
- HYDROLANT 123/112011-01-20 → 2011-02-01Seismic survey in progress 0800Z to 2200Z daily until 01 feb by M/V latalante towing 4630 meter long cable…Brazil-south Coast
- HYDROLANT 114/112011-01-19 → 2011-01-26Seismic survey in progress until 260159Z jan by M/V western monarch towing 5556 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 113/112011-01-19 → 2011-01-26Seismic survey in progress until 260159Z jan by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 112/112011-01-19 → 2011-01-26Seismic survey in progress until 260159Z jan by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 111/112011-01-19 → 2011-01-22Seismic survey in progress until 21 jan M/V wg tasman towing 8334 meter long cable in area bound by 04-08S…Brazil-north Coast
- HYDROLANT 108/112011-01-19 → 2011-01-26Seismic survey in progress until 260159Z jan by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 93/112011-01-17 → 2011-01-19Seismic survey in progress until 18 jan M/V wg tasman towing 8334 meter long cable in area bound by 03-38S…Brazil-north Coast
- HYDROLANT 73/112011-01-11 → 2011-01-19Seismic survey in progress until 190159Z jan by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 72/112011-01-11 → 2011-01-19Seismic survey in progress until 190159Z jan by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 70/112011-01-11 → 2011-01-19Seismic survey in progress until 190159Z jan by M/V western monarch towing 5556 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 62/112011-01-11 → 2011-01-16Seismic survey in progress until 15 jan M/V wg tasman towing 8334 meter long cable in area bound by 03-38S…Brazil-north Coast
- HYDROLANT 46/112011-01-08 → 2011-01-12Seismic survey in progress until 120159Z jan by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 45/112011-01-08 → 2011-01-12Seismic survey in progress until 120159Z jan by M/V western monarch towing 5556 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 44/112011-01-08 → 2011-01-12Seismic survey in progress until 120159Z jan by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 43/112011-01-08 → 2011-01-12Seismic survey in progress until 120159Z jan by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 35/112011-01-07 → 2011-01-12Seismic survey in progress until 11 jan M/V wg tasman towing 8334 meter long cable in area bound by 03-38S…Brazil-north Coast
- HYDROLANT 7/112011-01-03 → 2011-01-07Seismic survey in progress until 06 jan M/V wg tasman towing 8334 meter long cable in area bound by 03-38S…Brazil-north Coast
- HYDROLANT 2540/102010-12-31 → 2011-01-07Seismic survey in progress until 070159Z jan by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2538/102010-12-31 → 2011-01-07Seismic survey in progress until 070159Z jan by M/V ocean europe in area bound by 22-17.68S 040-09.75W,…Brazil-southeast Coast
- HYDROLANT 2537/102010-12-31 → 2011-01-07Seismic survey in progress until 070159Z jan by M/V western monarch towing 5556 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2528/102010-12-30 → 2011-01-03Seismic survey in progress until 02 jan M/V wg tasman towing 8334 meter long cable in area bound by 03-38S…Brazil-north Coast
- HYDROLANT 2519/102010-12-28 → 2011-01-06Cable laying operations in progress until further notice by cableship ile de brehat along trackline between…Eastern South Atlantic
- HYDROLANT 2518/102010-12-27 → 2010-12-31Seismic survey in progress until 30 dec by M/V wg tasman towing 8334 meter long cable in area bound by…Brazil-north Coast
- HYDROLANT 2501/102010-12-24 → 2010-12-28Cable operations in progress until further notice by cableship ile de brehat along trackline between…Eastern South Atlantic
- HYDROLANT 2498/102010-12-24 → 2010-12-31Seismic survey in progress until 310159Z dec by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2496/102010-12-24 → 2010-12-31Seismic survey in progress until 310159Z dec by M/V ocean europe in area bound by 22-17.68S 040-09.75W,…Brazil-southeast Coast
- HYDROLANT 2495/102010-12-24 → 2010-12-31Seismic survey in progress until 310159Z dec by M/V western monarch towing 5556 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2477/102010-12-22 → 2010-12-26Seismic survey in progress until 25 dec by M/V wg tasman towing 8334 meter long cable in area bound by…Brazil-north Coast
- HYDROLANT 2475/102010-12-22 → 2010-12-24Seismic survey in progress until 240159Z dec by M/V ocean europe in area bound by 22-17.68S 040-09.77W,…Brazil-southeast Coast
- HYDROLANT 2465/102010-12-21 → 2010-12-22Seismic survey in progress until 23 dec by M/V wg tasman towing 8334 meter long cable in area bound by…Brazil-north Coast
- HYDROLANT 2450/102010-12-18 → 2010-12-19Seismic survey in progress until 18 dec by M/V andrew charles towing 200 meter long cables in area bound by…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.