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 153/122012-01-20 → 2012-01-24Seismic survey in progress until 240159Z jan by M/V nps cgg symphony towing ten three mile long cables in…Brazil-southeast Coast
- HYDROLANT 130/122012-01-17 → 2012-01-22Seismic survey in progress until 21 jan by M/V polar explorer towing 5.4 mile long cable in area bound by…Brazil-north Coast
- HYDROLANT 129/122012-01-16 → 2012-02-10Seismic survey in progress until further notice by M/V ramform viking towing 12 7050 meter long cables in…Eastern South Atlantic · Namibia
- HYDROLANT 128/122012-01-16 → 2012-02-11Seismic survey in progress until further notice by M/V polarcus asima towing 6700 meter long cables in area…Eastern South Atlantic · Namibia
- HYDROLANT 111/122012-01-14 → 2012-01-20Seismic survey in progress until 200159Z jan by M/V veritas viking towing eight 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 109/122012-01-14 → 2012-01-20Seismic survey in progress until 200159Z jan by M/V nps oceanic phoenix towing 12 five mile long cables in…Brazil-southeast Coast
- HYDROLANT 108/122012-01-14 → 2012-01-20Seismic survey in progress until 200159Z jan by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 107/122012-01-14 → 2012-01-20Seismic survey in progress until 200159Z jan by M/V nps symphony towing ten three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 86/122012-01-10 → 2012-01-10Seismic survey by M/V discoverer towing 5.4 mile long cable on 12 jan in area bound by 03-27S 035-11W,…Brazil-north Coast
- HYDROLANT 55/122012-01-07 → 2012-01-12Seismic survey by M/V discoverer towing 5.4 mile long cable: a. 07 and 08 jan in area bound by 04-07S…Brazil-north Coast
- HYDROLANT 43/122012-01-06 → 2012-01-13Seismic survey in progress until 130159Z jan by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 42/122012-01-06 → 2012-01-13Seismic survey in progress until 130159Z jan by M/V nps symphony towing ten three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 41/122012-01-06 → 2012-01-13Seismic survey in progress until 130159Z jan by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 40/122012-01-06 → 2012-01-13Seismic survey in progress until 130159Z jan by M/V nps oceanic phoenix towing 12 five mile long cables in…Brazil-southeast Coast
- HYDROLANT 33/122012-01-05 → 2012-01-09Seismic survey 05 thru 08 jan by M/V polar explorer towing 5.4 mile long cable in area bound by 01-48S…Brazil-north Coast
- HYDROLANT 32/122012-01-05 → 2012-01-06Seismic survey in progress until 060159Z jan by M/V nps symphony towing ten three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2283/112011-12-30 → 2012-01-06Brazil-southeast coast 1. seismic survey in progress until 060159Z jan 12 by M/V ramform sovereing towing 14…
- HYDROLANT 2282/112011-12-30 → 2012-01-05Seismic survey in progress until 060159Z jan 12 by M/V nps symphony towing ten three mile long cables in…Brazil-southeast Coast
- HYDROLANT 2281/112011-12-30 → 2012-01-06Seismic survey in progress until 060159Z jan 12 by M/V wg cook towing 12 five mile long cables in area bound…Brazil-south Coast
- HYDROLANT 2270/112011-12-29 → 2012-01-01Seismic survey in progress until 31 dec by M/V polar explorer towing 5.4 mile long cable in areas bound by:…Brazil-north Coast
- HYDROLANT 2267/112011-12-29 → 2012-01-01Seismic survey in progress until 31 dec by M/V discoverer towing 5.4 mile long cable in areas bound by: a.…Brazil-north Coast
- HYDROLANT 2263/112011-12-28 → 2012-02-29Seismic survey in progress until further notice by M/V ramform valiant towing ten cables in area bound by…Eastern South Atlantic · Angola
- HYDROLANT 2243/112011-12-25 → 2011-12-30Brazil-southeast coast 1. seismic survey in progress until 300159Z dec by M/V ramform sovereing towing 14…
- HYDROLANT 2242/112011-12-25 → 2011-12-30Seismic survey in progress until 300159Z dec by M/V nps symphony towing ten three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2241/112011-12-25 → 2011-12-30Seismic survey in progress until 300159Z dec by M/V wg cook towing 12 five mile long cables in are bound by…Brazil-south Coast
- HYDROLANT 2240/112011-12-25 → 2011-12-28Seismic survey in progress until 27 dec by M/V discoverer towing 5.4 mile long cable in area bound by 01-21S…Brazil-north Coast
- HYDROLANT 2211/112011-12-21 → 2011-12-24Seismic survey in progress until 23 dec by M/V discoverer towing 5.4 mile long cable in area bound by 01-12S…Brazil-north Coast
- HYDROLANT 2179/112011-12-17 → 2011-12-23Brazil-southeast coast 1. seismic survey in progress until 230159Z dec by M/V ramform sovereing towing 14…
- HYDROLANT 2178/112011-12-17 → 2011-12-23Seismic survey in progress until 230159Z dec by M/V nps symphony towing ten three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2177/112011-12-17 → 2011-12-23Seismic survey in progress until 230159Z dec by M/V wg cook towing 12 five mile long cables in are bound by…Brazil-south Coast
- HYDROLANT 2161/112011-12-15 → 2012-01-16Seismic survey 15 dec thru 15 feb 12 by M/V geco eagle towing 4.3 mile long cable in area bound by 07-36.03S…Eastern South Atlantic · Angola
- HYDROLANT 2144/112011-12-13 → 2011-12-15Seismic survey 15 dec thru 15 feb 12 by M/V geco eagle in area bound by 07-36.03S 011-42.10E, 07-37.04S…Eastern South Atlantic · Angola
- HYDROLANT 2109/112011-12-10 → 2011-12-16Seismic survey in progress until 160159Z dec by M/V western monarch and M/V nps geco diamond towing three…Brazil-southeast Coast
- HYDROLANT 2108/112011-12-10 → 2011-12-16Seismic survey in progress until 160159Z dec by M/V wg cook towing 12 five mile long cables in are bound by…Brazil-south Coast
- HYDROLANT 2107/112011-12-10 → 2011-12-16Seismic survey in progress until 160159Z dec by M/V nps symphony towing ten three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 2106/112011-12-10 → 2011-12-16Brazil-southeast coast 1. seismic survey in progress until 160159Z dec by M/V ramform sovereing towing 14…
- HYDROLANT 2105/112011-12-10 → 2011-12-14Seismic survey in progress until 13 dec by M/V polar explorer towing 5.4 mile long cable in area bound by…Brazil-north Coast
- HYDROLANT 2071/112011-12-07 → 2011-12-12Seismic survey in progress until 11 dec by M/V polar explorer towing 5.4 mile long cable in area bound by…Brazil-north Coast
- HYDROLANT 2034/112011-12-01 → 2011-12-09Seismic survey in progress until 090159Z dec by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 2032/112011-12-01 → 2011-12-09Seismic survey in progress until 090159Z dec by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 2014/112011-11-28 → 2011-11-30Seismic survey in progress until 300159Z nov by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 2000/112011-11-27 → 2011-11-30Seismic survey in progress until 300159Z nov by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 1999/112011-11-27 → 2011-11-30Seismic survey in progress until 300159Z nov by M/V nps symphony towing ten three mile long cables in area…Brazil-southeast Coast
- HYDROLANT 1998/112011-11-27 → 2011-11-28Seismic survey in progress until 300159Z nov by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 1940/112011-11-19 → 2012-02-16Pipeline operations 21 nov thru 15 feb 12 by M/V acergy polaris in area bound by 20-59.07S 040-25.15W,…Brazil-southeast Coast
- HYDROLANT 1936/112011-11-19 → 2011-11-26Seismic survey in progress until 260159Z nov by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 1934/112011-11-19 → 2011-11-26Seismic survey in progress until 260159Z nov by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 1907/112011-11-15 → 2011-11-19Seismic survey in progress until 190159Z nov by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 1906/112011-11-15 → 2011-11-19Seismic survey in progress until 190159Z nov by M/V ramform sovereing towing 14 8100 meter long cables in…Brazil-southeast Coast
- HYDROLANT 1860/112011-11-08 → 2011-11-15Seismic survey in progress until 150159Z nov by M/V ramform sovereing towing 14 8100 meter long cables in…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.