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 2449/102010-12-18 → 2010-12-20Seismic survey in progress until 19 dec by M/V wg tasman towing 8334 meter long cable in area bound by…Brazil-north Coast
- HYDROLANT 2439/102010-12-17 → 2010-12-24Seismic survey in progress until 240159Z dec by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2438/102010-12-17 → 2010-12-24Seismic survey in progress until 240159Z dec by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 2437/102010-12-17 → 2010-12-24Seismic survey in progress until 240159Z dec by M/V western monarch towing 5556 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2431/102010-12-16 → 2010-12-18Seismic survey in progress until 180259Z dec by M/V andrew charles towing 200 meter long cables along…Brazil-north Coast
- HYDROLANT 2423/102010-12-15 → 2010-12-25Cable operations in progress until 24 dec by vessel sea e mar III along trackline between 20-25.01S…Brazil-east Coast
- HYDROLANT 2422/102010-12-15 → 2010-12-18Seismic survey in progress until 17 dec by M/V wg tasman towing 8334 meter long cable in area bound by…Brazil-north Coast
- HYDROLANT 2421/102010-12-14 → 2010-12-19Cable operations in progress until 18 dec by cableship ile de brehat along trackline joining 01-00.36S…Eastern South Atlantic
- HYDROLANT 2418/102010-12-13 → 2010-12-15Seismic survey 130200Z to 150159Z dec by M/V andrew charles towing 200 meter long cables in area bound by…Brazil-north Coast
- HYDROLANT 2399/102010-12-11 → 2010-12-17Seismic survey in progress until 170159Z dec by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 2397/102010-12-11 → 2010-12-17Seismic survey in progress until 170159Z dec by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2391/102010-12-11 → 2010-12-17Seismic survey in progress until 170159Z dec by M/V sanco star in area bound by 22-41.48S 040-35.37W,…Brazil-southeast Coast
- HYDROLANT 2390/102010-12-11 → 2010-12-17Seismic survey in progress until 170159Z dec by M/V ocean europe in area bound by 22-29.07S 040-35.37W,…Brazil-southeast Coast
- HYDROLANT 2389/102010-12-11 → 2010-12-15Seismic survey in progress until 14 dec by M/V wg tasman towing 8334 meter long cable in area bound by…Brazil-north Coast
- HYDROLANT 2388/102010-12-11 → 2010-12-17Seismic survey in progress until 170159Z dec by M/V western monarch towing 5556 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2360/102010-12-07 → 2010-12-11Seismic survey 08 thru 10 dec by M/V wg tasman towing 8334 meter long cable in area bound by 03-43.8S…Brazil-north Coast
- HYDROLANT 2345/102010-12-05 → 2010-12-10Seismic survey in progress until 100159Z dec by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2339/102010-12-04 → 2010-12-08Seismic survey 05 thru 07 dec by M/V wg tasman towing 8334 meter long cable in area bound by 03-43.2S…Brazil-north Coast
- HYDROLANT 2335/102010-12-03 → 2010-12-05Seismic survey in progress until 100159Z dec by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2334/102010-12-03 → 2010-12-10Seismic survey in progress until 100159Z dec by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 2324/102010-12-03 → 2010-12-10Seismic survey in progress until 100159Z dec by M/V sanco star in area bound by 22-41.48S 040-35.37W,…Brazil-southeast Coast
- HYDROLANT 2323/102010-12-03 → 2010-12-10Seismic survey in progress until 100159Z dec by M/V ocean europe in area bound by 22-29.07S 040-35.37W,…Brazil-southeast Coast
- HYDROLANT 2322/102010-12-03 → 2010-12-10Seismic survey in progress until 100159Z dec by M/V western monarch towing 5556 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2309/102010-12-02 → 2010-12-30Pipeline operations in progress until 300200Z dec by M/V seis ranger in area bound by 22-33.52S 040-06.75W,…Brazil-southeast Coast
- HYDROLANT 2284/102010-11-29 → 2010-12-02Seismic survey in progress until 01 dec by M/V wg tasman towing 13 4500 meter long cables in area bound by…Brazil-north Coast
- HYDROLANT 2275/102010-11-27 → 2010-12-08Cable operations 28 nov thru 07 dec by cableship inspector I vicinity of trackline between 20-25.01S…Brazil-east Coast
- HYDROLANT 2268/102010-11-27 → 2010-12-03Seismic survey in progress until 030159Z dec by M/V western monarch towing 13 5556 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2261/102010-11-26 → 2010-12-03Seismic survey in progress until 030159Z dec by M/V ocean europe in area bound by 22-29.07S 040-35.37W,…Brazil-southeast Coast
- HYDROLANT 2259/102010-11-26 → 2010-12-03Seismic survey by M/V ramform sovereign towing 14 8100 meter long cables: a. in progress until 282159Z nov…Brazil-southeast Coast
- HYDROLANT 2258/102010-11-26 → 2010-12-03Seismic survey in progress until 030159Z dec by M/V sanco star in area bound by 22-41.48S 040-35.37W,…Brazil-southeast Coast
- HYDROLANT 2257/102010-11-26 → 2010-12-03Seismic survey in progress until 030159Z dec by M/V western neptune towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2251/102010-11-25 → 2010-11-29Seismic survey in progress until 28 nov by M/V wg tasman towing 13 4500 meter long cables in area bound by…Brazil-north Coast
- HYDROLANT 2238/102010-11-23 → 2010-11-26Seismic survey in progress until 260159Z nov by M/V western monarch towing 13 5556 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2232/102010-11-22 → 2010-11-26Seismic survey in progress until 25 nov by M/V wg tasman towing 8334 meter long cable in area bound by…Brazil-north Coast
- HYDROLANT 2230/102010-11-21 → 2010-11-22Seismic survey in progress until 25 nov by M/V wg tasman towing 8334 meter long cable in area bound by…Brazil-north Coast
- HYDROLANT 2229/102010-11-21 → 2010-11-21Cable repair operations 210900Z to 212100Z nov in 20-25.08S 040-12.77WBrazil-east Coast
- HYDROLANT 2218/102010-11-20 → 2010-11-26Seismic survey in progress until 260159Z nov by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 2217/102010-11-20 → 2010-11-22Seismic survey in progress until 21 nov by M/V wg tasman towing 8334 meter long cable in area bound by…Brazil-north Coast
- HYDROLANT 2203/102010-11-19 → 2010-11-26Seismic survey in progress until 260159Z nov by M/V ocean europe in area bound by 22-10.97S 040-11.05W,…Brazil-southeast Coast
- HYDROLANT 2202/102010-11-19 → 2010-11-26Seismic survey in progress until 260159Z nov by M/V sanco star in area bound by 22-41.48S 040-35.37W,…Brazil-southeast Coast
- HYDROLANT 2201/102010-11-19 → 2010-11-20Seismic survey 190200Z to 260159Z nov by M/V ramform sovereing towing 14 8100 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2199/102010-11-19 → 2010-11-23Seismic survey 190200Z to 260200Z nov by M/V western neptune towing 12 3.5 mile long cables in area bound by…Brazil-southeast Coast
- HYDROLANT 2176/102010-11-17 → 2010-11-20Seismic survey in progress until 19 nov by M/V wg tasman towing 8334 meter long cable in area bound by…Brazil-northeast Coast
- HYDROLANT 2163/102010-11-14 → 2010-11-19Seismic survey 150200Z to 190159Z nov by M/V ramform sovereing towing 14 8100 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2162/102010-11-14 → 2010-11-19Seismic survey 150200Z to 190200Z nov by M/V western neptune towing 12 3.5 mile long cables in area bound by…Brazil-southeast Coast
- HYDROLANT 2148/102010-11-12 → 2010-11-19Seismic survey in progress until 190159Z nov by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 2122/102010-11-07 → 2010-11-12Seismic survey in progress until 120159Z nov by M/V ocean europe and M/V sanco star in area bound by…Brazil-southeast Coast
- HYDROLANT 2115/102010-11-06 → 2010-11-12Seismic survey in progress until 120159Z nov by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 2114/102010-11-06 → 2010-11-12Seismic survey in progress until 120159Z nov by M/V western neptune towing 12 3.5 mile long cables and M/V…Brazil-southeast Coast
- HYDROLANT 2065/102010-10-29 → 2010-11-05Seismic survey in progress until 050159Z nov 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.