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 117/132013-01-13 → 2013-01-14Seismic survey 13 jan by M/V wg tasman towing 12 8000 meter long cables along trackline between 36-32.90S…Western South Atlantic · Uruguay
- HYDROLANT 115/132013-01-12 → 2013-01-15Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 13 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 110/132013-01-12 → 2013-01-19Seismic survey in progress until 190159Z jan by M/V sanco star and M/V ocean europe towing three 200 meter…Brazil-southeast Coast
- HYDROLANT 109/132013-01-12 → 2013-01-19Seismic survey in progress until 190159Z jan by M/V ramform soveriegn towing 12 five mile long cables in…Brazil-south Coast
- HYDROLANT 108/132013-01-12 → 2013-01-19Seismic survey in progress until 190159Z jan by M/V ramform viking towing ten 8100 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 107/132013-01-12 → 2013-01-19Seismic survey in progress until 190159Z jan by M/V western neptune towing 12 6000 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 106/132013-01-12 → 2013-01-19Seismic survey in progress until 190159Z jan by M/V sanco spirit in area bound by 21-11.83S 040-03.83W,…Brazil-southeast Coast
- HYDROLANT 105/132013-01-12 → 2013-01-19Seismic survey in progress until 190159Z jan by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 103/132013-01-11 → 2013-01-13Seismic survey 11 and 12 jan by M/V ramform vanguard towing 12 7000 meter long cables along trackline…Western South Atlantic · Uruguay
- HYDROLANT 95/132013-01-11 → 2013-02-01Seismic survey in progress until 31 jan by M/V teknik perdana towing 5.4 mile long cables in area bound by…Brazil-north Coast
- HYDROLANT 84/132013-01-09 → 2013-01-11Seismic survey in progress by M/V ramform vanguard towing 12 7000 meter long cables along tracklines…Western South Atlantic · Uruguay
- HYDROLANT 76/132013-01-08 → 2013-01-09Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 08 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 69/132013-01-08 → 2013-01-14Seismic survey in progress until further notice by M/V wg tasman towing 12 8000 meter long cables in area…Western South Atlantic · Uruguay
- HYDROLANT 68/132013-01-08 → 2013-01-09Seismic survey 08 jan by M/V ramform vanguard towing 12 7000 meter long cables along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 48/132013-01-04 → 2013-01-12Seismic survey 050200Z to 120159Z jan by M/V ramform viking towing ten 8100 meter long cables in area bound…Brazil-southeast Coast
- HYDROLANT 46/132013-01-04 → 2013-01-12Seismic survey 050200Z to 120159Z jan by M/V wg cook towing 12 five mile long cables in area bound by 25-42S…Brazil-south Coast
- HYDROLANT 45/132013-01-04 → 2013-01-12Seismic survey 050200Z to 120159Z jan by M/V nps sanco star and M/V nps ocean europe towing three 200 meter…Brazil-southeast Coast
- HYDROLANT 44/132013-01-04 → 2013-01-12Seismic survey 050200Z to 120159Z jan by M/V western neptune towing 12 6000 meter long cables in area bound…Brazil-southeast Coast
- HYDROLANT 43/132013-01-04 → 2013-01-12Seismic survey 050200Z to 120159Z jan by M/V nps sanco spirit in area bound by 21-11.83S 040-03.83W,…Brazil-southeast Coast
- HYDROLANT 24/132013-01-03 → 2013-01-04Seismic survey 03 jan by M/V ramform vanguard towing 12 7000 meter long cables along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 3086/122012-12-31 → 2013-01-02Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 31 dec along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 3083/122012-12-30 → 2013-01-05Seismic survey in progress until 050159Z jan 13 by M/V western neptune towing 12 6000 meter long cables in…Brazil-southeast Coast
- HYDROLANT 3081/122012-12-29 → 2013-01-02Seismic survey by M/V polarcus amani towing ten 6000 meter long cables: a. 29 dec along tracklines between:…Western South Atlantic · Uruguay
- HYDROLANT 3080/122012-12-29 → 2012-12-31Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 29 dec along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 3078/122012-12-29 → 2013-01-05Seismic survey in progress until 050159Z jan 13 by M/V wg cook towing 12 five mile long cables in area bound…Brazil-south Coast
- HYDROLANT 3077/122012-12-29 → 2013-01-05Seismic survey in progress until 050159Z jan 13 by M/V ramform viking towing ten 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 3076/122012-12-29 → 2013-01-05Seismic survey in progress until 050159Z jan 13 by M/V nps sanco star and M/V nps ocean europe towing three…Brazil-southeast Coast
- HYDROLANT 3075/122012-12-29 → 2013-01-05Seismic survey in progress until 050159Z jan 13 by M/V nps sanco spirit in area bound by 21-11.83S…Brazil-southeast Coast
- HYDROLANT 3055/122012-12-27 → 2012-12-29Seismic survey by M/V ramform vanguard towing 12 7000 meters long cables: a. in progress along trackline…Western South Atlantic · Uruguay
- HYDROLANT 3044/122012-12-27 → 2012-12-27Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. in progress along trackline…Western South Atlantic · Uruguay
- HYDROLANT 3043/122012-12-27 → 2012-12-28Seismic survey 27 dec by M/V tasman towing 12 8800 meter long cables along trackline between 36-32.90S…Western South Atlantic · Uruguay
- HYDROLANT 3041/122012-12-27 → 2012-12-30Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. in progress along trackline between…Brazil-northeast Coast
- HYDROLANT 3034/122012-12-26 → 2012-12-27Seismic survey 26 dec by M/V ramform vanguard towing 12 7000 meter long cables along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 3033/122012-12-26 → 2012-12-27Seismic survey 26 dec by M/V tasman towing 12 8800 meter long cables along trackline between 36-32.90S…Western South Atlantic · Uruguay
- HYDROLANT 3031/122012-12-24 → 2012-12-26Seismic survey in progress until further notice by M/V tasman towing 12 8800 meter long cables along…Western South Atlantic · Uruguay
- HYDROLANT 3022/122012-12-23 → 2012-12-24Seismic survey 23 dec by M/V tasman towing 12 8800 meter long cables along trackline between 36-33.17S…Western South Atlantic · Uruguay
- HYDROLANT 3021/122012-12-22 → 2012-12-26Seismic survey in progress until further notice by M/V ramform vanguard towing 12 7000 meter long cables in…Western South Atlantic · Uruguay
- HYDROLANT 3020/122012-12-22 → 2012-12-24Seismic survey by M/V tasman towing 12 8800 meter long cables: a. 22 dec along trackline between 36-33.93S…Western South Atlantic · Uruguay
- HYDROLANT 3017/122012-12-22 → 2012-12-22Seismic survey in progress until further notice by M/V ramform vanguard towing 12 7000 meter long cables in…Western South Atlantic · Uruguay
- HYDROLANT 3016/122012-12-22 → 2012-12-27Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. 22 dec along trackline between 03-10.66S…Brazil-north Coast
- HYDROLANT 3015/122012-12-22 → 2012-12-29Seismic survey in progress until 290159Z dec by M/V ramform viking towing ten 8100 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 3013/122012-12-22 → 2012-12-29Seismic survey in progress until 290159Z dec by M/V nps sanco spirit in area bound by 21-44S 039-59W, 21-46S…Brazil-southeast Coast
- HYDROLANT 3012/122012-12-22 → 2012-12-29Seismic survey in progress until 290159Z dec by M/V western neptune towing 12 6000 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 3011/122012-12-22 → 2012-12-29Seismic survey 220200Z to 290159Z dec by M/V sanco star and M/V ocean europe towing three 200 meter long…Brazil-southeast Coast
- HYDROLANT 3007/122012-12-21 → 2012-12-22Seismic survey 21 dec by M/V tasman towing 12 8800 meter long cables along tracklines between: a. 35-57.32S…Western South Atlantic · Uruguay
- HYDROLANT 2978/122012-12-18 → 2012-12-23Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. in progress until 18 dec along trackline…Brazil-north Coast
- HYDROLANT 2968/122012-12-17 → 2012-12-19Seismic survey by M/V tasman towing 12 8800 meter long cables: a. in progress along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 2958/122012-12-15 → 2012-12-22Seismic survey in progress until 220159Z dec by M/V ramform viking towing ten 8100 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2957/122012-12-15 → 2012-12-22Seismic survey in progress until 220159Z dec by M/V western neptune towing 12 6000 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2954/122012-12-15 → 2012-12-17Seismic survey 15 and 16 dec by M/V tasman towing 12 8800 meter long cables along tracklines between: a.…Western South Atlantic · Uruguay
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.