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 1780/122012-08-04 → 2012-08-11Seismic survey in progress until 110259Z aug by M/V sanco star and M/V ocean europe towing 300 meter long…Brazil-southeast Coast
- HYDROLANT 1762/122012-08-02 → 2012-08-05Seismic survey in progress until 04 aug by M/V harrier explorer towing 5.4 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1739/122012-07-31 → 2012-08-01Seismic survey in progress until 31 jul by M/V harrier explorer towing 5.4 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1718/122012-07-28 → 2012-08-04Seismic survey in progress until 040259Z aug by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 1717/122012-07-28 → 2012-08-04Seismic survey in progress until 040259Z aug by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 1716/122012-07-28 → 2012-08-04Seismic survey in progress until 040259Z aug by M/V nps wg cook towing 12 five mile long cables in area…Brazil-southeast Coast
- HYDROLANT 1715/122012-07-28 → 2012-08-04Seismic survey in progress until 040259Z aug by M/V nps discoverer towing 12 cables in area bound by 25-43S…Brazil-south Coast
- HYDROLANT 1714/122012-07-28 → 2012-08-04Seismic survey in progress until 040259Z aug by M/V nps sanco star and M/V ocean europe towing 300 meter…Brazil-southeast Coast
- HYDROLANT 1713/122012-07-28 → 2012-07-31Seismic survey in progress until 30 jul by M/V harrier explorer towing 5.4 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1673/122012-07-24 → 2012-07-28Seismic survey in progress until 280259Z jul by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 1663/122012-07-23 → 2012-07-28Seismic survey in progress until 27 jul by M/V harrier explorer towing 6.5 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1657/122012-07-21 → 2012-07-28Seismic survey 220300Z to 280259Z jul by M/V nps ramform sovereing towing 14 8100 meter long cables in area…Brazil-south Coast
- HYDROLANT 1651/122012-07-21 → 2012-07-28Seismic survey in progress until 280259Z jul by M/V nps sanco star and M/V ocean europe towing 300 meter…Brazil-southeast Coast
- HYDROLANT 1650/122012-07-21 → 2012-07-24Seismic survey in progress until 280259Z jul by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 1649/122012-07-21 → 2012-07-28Seismic survey in progress until 280259Z jul by M/V discoverer towing 5.4 mile long cables in area bound by…Brazil-southeast Coast
- HYDROLANT 1647/122012-07-21 → 2012-07-28Seismic survey in progress until 280259Z jul by M/V nps wg cook towing 12 five mile long cables in area…Brazil-southeast Coast
- HYDROLANT 1635/122012-07-20 → 2012-07-22Seismic survey in progress until 21 jul by M/V harrier explorer towing 6.5 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1580/122012-07-15 → 2012-07-21Seismic survey in progress until 210259Z jul by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 1579/122012-07-15 → 2012-07-21Seismic survey in progress until 210259Z jul by M/V nps ramform sovereing towing 14 8100 meter cables in…Brazil-south Coast
- HYDROLANT 1578/122012-07-15 → 2012-07-21Seismic survey in progress until 210259Z jul by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 1576/122012-07-15 → 2012-07-21Seismic survey in progress until 210259Z jul by M/V nps sanco star and M/V ocean europe towing 300 meter…Brazil-southeast Coast
- HYDROLANT 1575/122012-07-15 → 2012-07-21Seismic survey in progress until 210259Z jul by M/V discoverer towing 5.4 mile long cables in area bound by…Brazil-southeast Coast
- HYDROLANT 1573/122012-07-15 → 2012-07-21Seismic survey in progress until 210259Z jul by M/V nps polar explorer towing 12 five mile long cables in…Brazil-southeast Coast
- HYDROLANT 1548/122012-07-12 → 2012-07-18Seismic survey in progress until 17 jul by M/V harrier explorer towing 6.5 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1509/122012-07-08 → 2012-07-11Seismic survey in progress until 10 jul by M/V harrier explorer towing 6.5 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1501/122012-07-07 → 2012-07-14Seismic survey in progress until 140259Z jul by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 1500/122012-07-07 → 2012-07-14Seismic survey in progress until 140259Z jul by M/V nps ramform sovereing towing 14 8100 meter cables in…Brazil-south Coast
- HYDROLANT 1499/122012-07-07 → 2012-07-14Seismic survey in progress until 140259Z jul by M/V nps sanco star and M/V nps ocean europe towing 300 meter…Brazil-southeast Coast
- HYDROLANT 1498/122012-07-07 → 2012-07-14Seismic survey in progress until 140259Z jul by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-south Coast
- HYDROLANT 1497/122012-07-07 → 2012-07-14Seismic survey in progress until 140259Z jul by M/V polar explorer towing 12 cables in area bound by…Brazil-southeast Coast
- HYDROLANT 1495/122012-07-07 → 2012-07-14Seismic survey 070300Z to 140259Z jul by M/V nps discoverer towing 12 cables in area bound by 21-47S…Brazil-southeast Coast
- HYDROLANT 1449/122012-07-02 → 2012-07-07Seismic survey in progress until 06 jul by M/V harrier explorer towing 6.5 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1440/122012-07-01 → 2012-07-07Seismic survey in progress until 070259Z jul by M/V polar explorer towing 12 cables in area bound by…Brazil-southeast Coast
- HYDROLANT 1430/122012-06-30 → 2012-07-07Seismic survey in progress until 070259Z jul by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-south Coast
- HYDROLANT 1423/122012-06-28 → 2012-07-05Seismic survey by M/V seward johnson: a. in progress until 29 jun within 5.4 miles of 00-19.78S 043-39.05WBrazil-north Coast
- HYDROLANT 1422/122012-06-28 → 2012-06-30Seismic survey 290300Z jun to 070259Z jul by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-south Coast
- HYDROLANT 1421/122012-06-28 → 2012-07-07Seismic survey 290300Z jun to 070259Z jul by M/V nps sanco star and M/V nps ocean europe towing 300 meter…Brazil-southeast Coast
- HYDROLANT 1420/122012-06-28 → 2012-07-07Seismic survey 290300Z jun to 070259Z jul by M/V nps ramform sovereing towing 14 8100 meter cables in area…Brazil-south Coast
- HYDROLANT 1419/122012-06-28 → 2012-07-07Seismic survey 290300Z jun to 070259Z jul by M/V nps wg cook towing 12 five mile long cables in area bound…Brazil-south Coast
- HYDROLANT 1408/122012-06-28 → 2012-07-02Seismic survey in progress until 02 jul by M/V harrier explorer towing 6.5 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1368/122012-06-23 → 2012-06-28Seismic survey by M/V hawk explorer towing 5.4 mile long cables: a. 23 jun in area bound by 13-34.6S…Brazil-east Coast
- HYDROLANT 1364/122012-06-23 → 2012-06-23Seismic survey in progress until 27 jun by M/V harrier explorer towing 6.5 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1337/122012-06-20 → 2012-06-24Seismic survey by M/V seward johnson in progress until 23 jun along trackline joining 00-30S 043-46W, 00-20S…Brazil-north Coast
- HYDROLANT 1321/122012-06-18 → 2012-06-22Seismic survey in progress until 21 jun by M/V harrier explorer towing 6.5 mile long cables in area bound by…Brazil-east Coast
- HYDROLANT 1306/122012-06-17 → 2012-06-23Seismic survey in progress until 230259Z jun by M/V nps wg cook towing 12 five mile long cables in area…Brazil-south Coast
- HYDROLANT 1305/122012-06-17 → 2012-06-23Seismic survey in progress until 230259Z jun by M/V nps ramform sovereing towing 14 8100 meter long cables…Brazil-south Coast
- HYDROLANT 1304/122012-06-17 → 2012-06-23Seismic survey in progress until 230259Z jun by M/V nps veritas viking towing eight 3.5 mile long cables in…Brazil-southeast Coast
- HYDROLANT 1303/122012-06-17 → 2012-06-23Seismic survey in progress until 230259Z jun by M/V polar explorer towing 12 3.5 mile long cables in area…Brazil-southeast Coast
- HYDROLANT 1302/122012-06-17 → 2012-06-23Seismic survey in progress until 230259Z jun by M/V nps sanco star and M/V ocean europe towing 300 meter…Brazil-southeast Coast
- HYDROLANT 1284/122012-06-15 → 2012-06-19Seismic survey in progress until 18 jun by M/V harrier explorer towing 6.5 mile long cables in area bound by…Brazil-east 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.