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)
J
F
M
A
M
J
J
A
S
O
N
D
Other hazards in the South Atlantic Ocean
Archive · 5,170 cancelled
- HYDROLANT 356/132013-02-08 → 2013-02-12Seismic survey 090200Z to 160159Z feb by M/V western neptune towing 12 6000 meter long cables in area bound…Brazil-southeast Coast
- HYDROLANT 355/132013-02-08 → 2013-02-16Seismic survey 090200Z to 160159Z feb by M/V wg cook towing 12 five mile long cables in area bound by 25-05S…Brazil-south Coast
- HYDROLANT 347/132013-02-08 → 2013-02-10Seismic survey by M/V wg tasman towing 12 8000 meter long cables: a. 08 feb along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 346/132013-02-08 → 2013-02-09Seismic survey 08 feb by M/V ramform vanguard towing 12 7000 meter long cables along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 338/132013-02-06 → 2013-02-08Seismic survey in progress until 07 feb by M/V wg tasman towing 12 8000 meter long cables along trackline…Western South Atlantic · Uruguay
- HYDROLANT 333/132013-02-06 → 2013-02-08Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 06 feb along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 331/132013-02-05 → 2013-02-09Seismic survey in progress until 090159Z feb by M/V western neptune towing 12 8000 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 305/132013-02-04 → 2013-02-05Seismic survey 04 feb by M/V wg tasman towing 12 8000 meter long cables along trackline between 35-55.03S…Western South Atlantic · Uruguay
- HYDROLANT 304/132013-02-04 → 2013-02-07Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 04 feb along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 301/132013-02-03 → 2013-02-04Seismic survey 03 feb by M/V wg tasman towing 12 8000 meter long cables along trackline between 35-54.92S…Western South Atlantic · Uruguay
- HYDROLANT 296/132013-02-01 → 2013-02-09Seismic survey 020200Z to 090159Z feb by M/V wg cook towing 12 five mile long cables in area bound by 25-42S…Brazil-south Coast
- HYDROLANT 295/132013-02-01 → 2013-02-09Seismic survey 020200Z to 090159Z feb by M/V sanco spirit in area bound by 21-11.83S 040-03.83W, 21-15.65S…Brazil-southeast Coast
- HYDROLANT 294/132013-02-01 → 2013-02-05Seismic survey 020200Z to 090159Z feb by M/V western neptune towing 12 6000 meter long cables in area bound…Brazil-southeast Coast
- HYDROLANT 293/132013-02-01 → 2013-02-09Seismic survey 020200Z to 090159Z feb by M/V ramform soveriegn towing 12 five mile long cables in area bound…Brazil-south Coast
- HYDROLANT 292/132013-02-01 → 2013-02-09Seismic survey 020200Z to 090159Z feb by M/V sanco star and M/V ocean europe towing three 200 meter long…Brazil-southeast Coast
- HYDROLANT 291/132013-02-01 → 2013-02-09Seismic survey 020200Z to 090159Z feb by M/V ramform viking towing ten 8100 meter long cables in area bound…Brazil-southeast Coast
- HYDROLANT 288/132013-02-01 → 2013-02-02Seismic survey 01 feb by M/V wg tasman towing 12 8000 meter long cables along trackline between 36-31.62S…Western South Atlantic · Uruguay
- HYDROLANT 287/132013-02-01 → 2013-02-04Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 01 feb along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 276/132013-01-30 → 2013-02-01Seismic survey in progress until further notice by M/V wg tasman towing 12 8000 meter long cables in area…Western South Atlantic · Uruguay
- HYDROLANT 275/132013-01-30 → 2013-02-01Seismic survey in progress until 31 jan by M/V ramform vanguard towing 12 7000 meter long cables along…Western South Atlantic · Uruguay
- HYDROLANT 271/132013-01-30 → 2013-01-31Seismic survey 30 jan by M/V wg tasman towing 12 8000 meter long cables along trackline between 35-55.25S…Western South Atlantic · Uruguay
- HYDROLANT 258/132013-01-28 → 2013-01-31Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 28 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 247/132013-01-27 → 2013-01-30Seismic survey by M/V wg tasman towing 12 8000 meter long cables: a. 27 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 246/132013-01-27 → 2013-01-27Seismic survey in progress until further notice by M/V wg tasman towing 12 8000 meter long cables in area…Western South Atlantic · Uruguay
- HYDROLANT 245/132013-01-27 → 2013-01-29Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 27 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 235/132013-01-26 → 2013-02-02Seismic survey in progress until 020159Z feb by M/V sanco star and M/V ocean europe towing three 200 meter…Brazil-southeast Coast
- HYDROLANT 233/132013-01-26 → 2013-01-30Seismic survey in progress until 020159Z feb by M/V sanco spirit in area bound by 21-11.83S 040-03.83W,…Brazil-southeast Coast
- HYDROLANT 231/132013-01-26 → 2013-02-02Seismic survey in progress until 020159Z feb by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 230/132013-01-26 → 2013-02-02Seismic survey in progress until 020159Z feb by M/V ramform viking towing ten 8100 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 222/132013-01-25 → 2013-01-26Seismic survey 25 jan by M/V wg tasman towing 12 8000 meter long cables along trackline between 36-31.60S…Western South Atlantic · Uruguay
- HYDROLANT 219/132013-01-25 → 2013-01-28Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 25 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 209/132013-01-24 → 2013-01-25Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 24 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 200/132013-01-22 → 2013-01-25Seismic survey by M/V wg tasman towing 12 8000 meter long cables: a. 23 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 199/132013-01-22 → 2013-01-24Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 23 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 187/132013-01-21 → 2013-01-23Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 21 and 22 jan along trackline…Western South Atlantic · Uruguay
- HYDROLANT 186/132013-01-21 → 2013-01-22Seismic survey 21 jan by M/V wg tasman towing 12 8000 meter long cables along trackline between 36-32.13S…Western South Atlantic · Uruguay
- HYDROLANT 181/132013-01-20 → 2013-01-22Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 20 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 176/132013-01-19 → 2013-01-21Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 19 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 168/132013-01-19 → 2013-01-26Seismic survey in progress until 260159Z jan by M/V sanco spirit towing equipment in area bound by 21-11.83S…Brazil-southeast Coast
- HYDROLANT 166/132013-01-19 → 2013-01-26Seismic survey in progress until 260159Z jan by M/V wg cook towing 12 five mile long cables in area bound by…Brazil-south Coast
- HYDROLANT 165/132013-01-19 → 2013-01-26Seismic survey in progress until 260159Z jan by M/V western neptune towing 12 6000 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 164/132013-01-19 → 2013-01-26Seismic survey in progress until 260159Z jan by M/V ramform viking towing ten 8100 meter long cables in area…Brazil-southeast Coast
- HYDROLANT 162/132013-01-19 → 2013-01-26Seismic survey in progress until 260159Z jan by M/V sanco star and M/V ocean europe towing three 200 meter…Brazil-southeast Coast
- HYDROLANT 148/132013-01-17 → 2013-01-18Seismic survey 17 jan by M/V wg tasman towing 12 8000 meter long cables along trackline between 35-50.53S…Western South Atlantic · Uruguay
- HYDROLANT 147/132013-01-17 → 2013-01-19Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 17 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 144/132013-01-16 → 2013-02-16Seismic survey in progress until further notice by M/V northern explorer towing 10000 meter long cable in…Eastern South Atlantic · South Africa-west Coast
- HYDROLANT 133/132013-01-16 → 2013-01-17Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 16 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 122/132013-01-14 → 2013-01-16Seismic survey 14 and 15 jan by M/V wg tasman towing 12 8000 meter long cables along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 121/132013-01-14 → 2013-01-16Seismic survey by M/V ramform vanguard towing 12 7000 meter long cables: a. 14 jan along trackline between…Western South Atlantic · Uruguay
- HYDROLANT 118/132013-01-14 → 2013-01-14Seismic survey 14 and 15 jan by M/V wg tasman towing 12 8000 meter long cables along trackline between…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.