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 2952/122012-12-14 → 2012-12-22Seismic survey 150200Z to 220159Z dec by M/V sanco star and M/V ocean europe towing three 200 meter long…Brazil-southeast Coast
- HYDROLANT 2950/122012-12-14 → 2012-12-15Seismic survey 14 dec by M/V tasman towing 12 8800 meter long cables along trackline between 36-33.95S…Western South Atlantic · Uruguay
- HYDROLANT 2949/122012-12-14 → 2012-12-14Seismic survey 12 and 13 dec by M/V tasman towing 12 8800 meter long cables along tracklines between: a.…Western South Atlantic · Uruguay
- HYDROLANT 2936/122012-12-12 → 2012-12-14Seismic survey in progress until 13 dec by M/V tasman towing 12 8800 meter long cables along tracklines…Western South Atlantic · Uruguay
- HYDROLANT 2932/122012-12-12 → 2012-12-17Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. in progress along trackline joining…Brazil-north Coast
- HYDROLANT 2928/122012-12-11 → 2012-12-13Seismic survey 11 and 12 dec by M/V tasman towing 12 8800 meter long cables along tracklines between: a.…Western South Atlantic · Uruguay
- HYDROLANT 2910/122012-12-09 → 2012-12-10Seismic survey 09 dec by M/V tasman towing 12 8800 meter long cables along trackline between 36-34.47S…Western South Atlantic · Uruguay
- HYDROLANT 2905/122012-12-08 → 2012-12-15Seismic survey in progress until 150159Z dec by M/V sanco star and M/V ocean europe towing three 200 meter…Brazil-southeast Coast
- HYDROLANT 2904/122012-12-08 → 2012-12-15Seismic survey in progress until 150159Z dec by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 2902/122012-12-08 → 2012-12-15Seismic survey in progress until 150159Z dec by M/V ramform viking towing ten 8100 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2901/122012-12-08 → 2012-12-15Seismic survey in progress until 150159Z dec by M/V western neptune towing 12 6000 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2891/122012-12-07 → 2012-12-12Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. in progress along trackline joining…Brazil-north Coast
- HYDROLANT 2881/122012-12-05 → 2013-01-11Seismic survey in progress until 10 jan 13 by M/V teknik perdana towing 5.4 mile long cables in area bound…Brazil-north Coast
- HYDROLANT 2870/122012-12-05 → 2012-12-05Seismic survey in progress until 10 dec by M/V teknik perdana towing 5.4 meter long cables in area bound by…Brazil-north Coast
- HYDROLANT 2865/122012-12-04 → 2012-12-08Seismic survey in progress until 080159Z dec by M/V ramform viking towing ten 8100 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 2861/122012-12-04 → 2012-12-05Seismic survey by M/V tasman towing 12 8800 meter long cables: a. in progess along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 2856/122012-12-04 → 2012-12-07Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. in progress along trackline between…Brazil-north Coast
- HYDROLANT 2832/122012-12-01 → 2012-12-02Seismic survey 01 dec by M/V wg tasman towing 12 8800 meter long cables along trackline between 36-34.73S…Western South Atlantic · Uruguay-southeast Coast
- HYDROLANT 2829/122012-12-01 → 2012-12-08Seismic survey in progress until 080159Z dec by M/V sanco star and M/V ocean europe towing 200 meter long…Brazil-southeast Coast
- HYDROLANT 2828/122012-12-01 → 2012-12-08Seismic survey in progress until 080159Z dec by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 2827/122012-12-01 → 2012-12-08Seismic survey in progress until 080159Z dec by M/V ramform sovereing towing 12 five mile long cables in…Brazil-south Coast
- HYDROLANT 2826/122012-12-01 → 2012-12-04Seismic survey in progress until 080159Z dec by M/V veritas viking towing eight 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2814/122012-11-30 → 2012-12-01Seismic survey 30 nov by M/V wg tasman towing 12 8800 meter long cables along trackline between 36-34.72S…Western South Atlantic · Uruguay-southeast Coast
- HYDROLANT 2798/122012-11-28 → 2012-12-03Seismic survey in progress by M/V hawk explorer towing 5.4 mile long cables: a. in progress along trackline…Brazil-north Coast
- HYDROLANT 2796/122012-11-28 → 2012-11-29Seismic survey in progress until 291300Z nov by M/V ramform sovereing towing 12 five mile long cables in…Brazil-south Coast
- HYDROLANT 2774/122012-11-24 → 2012-12-01Seismic survey in progress until 010159Z dec by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 2773/122012-11-24 → 2012-12-01Seismic survey in progress until 010159Z dec by M/V sanco star and M/V ocean europe towing 200 meter long…Brazil-southeast Coast
- HYDROLANT 2772/122012-11-24 → 2012-11-28Seismic survey in progress until 010159Z dec by M/V ramform soveriegn towing 12 five mile long cables in…Brazil-south Coast
- HYDROLANT 2727/122012-11-18 → 2012-11-24Seismic survey in progress until 240159Z nov by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 2711/122012-11-17 → 2012-11-24Seismic survey 170200Z to 240159Z nov by M/V nps ramform sovereing towing 12 9260 meter long cables in area…Brazil-south Coast
- HYDROLANT 2710/122012-11-17 → 2012-11-24Seismic survey 170200Z to 240159Z nov by M/V nps sanco star and M/V nps ocean europe towing 200 meter long…Brazil-southeast Coast
- HYDROLANT 2678/122012-11-12 → 2012-11-30Seismic survey in progress until further notice by M/V wg tasman towing 12 8000 meter long cables in area…Western South Atlantic · Uruguay-southeast Coast
- HYDROLANT 2672/122012-11-10 → 2012-12-20Seismic survey equipment temporarily established 111600Z nov to 241600Z dec in area bound by 21-13.55S…Brazil-southeast Coast
- HYDROLANT 2664/122012-11-10 → 2012-11-17Seismic survey 100200Z to 170159Z nov by M/V nps wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 2663/122012-11-10 → 2012-11-17Seismic survey 100200Z to 170159Z nov by M/V nps sanco star and M/V nps ocean europe towing 200 meter long…Brazil-southeast Coast
- HYDROLANT 2662/122012-11-10 → 2012-11-17Seismic survey by M/V ramform sovereign towing 12 9260 meter long cables: a. 100200Z to 140859Z nov in area…Brazil-south Coast
- HYDROLANT 2591/122012-11-02 → 2012-11-10Seismic survey 030200Z to 100159Z nov by M/V nps wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 2590/122012-11-02 → 2012-11-10Seismic survey 030200Z to 100159Z nov by M/V nps sanco star and M/V nps ocean europe towing 300 meter long…Brazil-southeast Coast
- HYDROLANT 2578/122012-11-01 → 2012-11-10Seismic survey 030200Z to 100159Z nov by M/V ramform sovereign towing 12 9260 meter long cables in area…Brazil-south Coast
- HYDROLANT 2566/122012-11-01 → 2012-11-07Seismic survey 020259Z to 070259Z nov by M/V discoverer towing 10200 meter long cable in area bound by…Western South Atlantic · Uruguay-southeast Coast
- HYDROLANT 2525/122012-10-27 → 2013-01-21Seismic survey operations in progress until 31 jan 13 by M/V ramform challenger towing 12 four mile long…Eastern South Atlantic · Angola
- HYDROLANT 2523/122012-10-27 → 2012-11-03Seismic survey in progress until 030159Z nov by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 2522/122012-10-27 → 2012-11-03Seismic survey in progress until 030159Z nov by M/V veritas viking towing ten cables in area bound by 22-49S…Brazil-southeast Coast
- HYDROLANT 2518/122012-10-27 → 2012-11-03Seismic survey 270200Z oct to 030159Z nov by M/V nps sanco star and nps ocean europe towing 200 meter long…Brazil-southeast Coast
- HYDROLANT 2461/122012-10-22 → 2012-10-25Seismic survey in progress until 24 oct by M/V harrier explorer towing 6.5 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 2452/122012-10-20 → 2012-10-27Seismic survey in progress until 270359Z oct by M/V veritas viking towing eight 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2450/122012-10-20 → 2012-10-27Seismic survey in progress until 270259Z oct by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 2449/122012-10-20 → 2012-10-27Seismic survey 200300Z to 270259Z oct by M/V nps sanco star and M/V nps ocean europe towing 200 meter long…Brazil-southeast Coast
- HYDROLANT 2427/122012-10-18 → 2012-10-22Seismic survey 17 thru 21 oct by M/V harrier explorer towing 6.5 mile long cables in area bound by 13-34.6S…Brazil-east Coast
- HYDROLANT 2411/122012-10-15 → 2012-10-20Seismic survey in progress until 200359Z oct by M/V veritas viking towing eight 3.5 mile long cables in area…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.