Survey operations in the North Atlantic Ocean
Hydrographic and scientific survey vessels, often towing long arrays.
- in force
- 15
- last 12 months
- 16
- vs previous 12 (3)
- +433%
- since 1997
- 1,072
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 · 15
- NAVAREA IV 708/26in force2026-07-21Survey operations by vessel FUGRO DISCOVERY in North Atlantic off Virginia from July 23 to August 26, wide berth requested.North Atlantic · Virginia
- NAVAREA IV 705/26in force2026-07-20Survey operations are underway until 31 December near Guyana by vessel AHT DN87 and tug TELESTO; wide berth requested.North Atlantic · Guyana
- NAVAREA IV 621/26in force2026-06-24Underwater operations by vessel Prinsengracht continue in Guyana until 31 Dec; wide berth requested.North Atlantic · Guyana
- NAVAREA IV 616/26in force2026-06-23Survey operations by vessel Moonrise G continue in Guyana waters until November 15; wide berth requested.North Atlantic · Guyana
- NAVAREA IV 615/26in force2026-06-23Survey operations by vessel BGP Prospector continue in the North Atlantic near Guyana until November 15, with wide berth requested.North Atlantic · Guyana
- NAVAREA IV 586/26in force2026-06-15Underwater operations by vessel Normand Navigator continue until 31 Dec near Guyana, wide berth requested.North Atlantic · Guyana
- NAVAREA IV 552/26in force2026-06-09Survey operations are underway until 16 November by vessel SeaQuest in an area near 58°W 07°N, wide berth requested.
- NAVAREA IV 551/26in force2026-06-09Survey operations by vessel Sea Horse II are in progress until 16 November in an area near 07-57N 058-27W to 07-11N 057-33W, wide berth requested.
- NAVAREA IV 538/26in force2026-06-05Underwater operations by vessel Handin Tide continue until 25 August in the North Atlantic off Guyana, near 08-00N 057-00W; wide berth requested.North Atlantic · Guyana
- NAVAREA IV 539/26in force2026-06-05Underwater operations by vessel C-Worker 1 until 31 Dec in area from 07-54.85N 057-06.47W to 08-04.55N 056-50.16W, Guyana. Wide berth requested.North Atlantic · Guyana
- NAVAREA IV 496/26in force2026-05-26Underwater operations by vessel Normand Navigator continue near Suriname from June 1 to August 31, requesting one mile berth.North Atlantic · Suriname
- NAVAREA IV 98/26in force2026-02-03Survey operations by vessel Fugro Brasilis are ongoing until 31 December 2026 off Guyana; wide berth requested.North Atlantic · Guyana
- NAVAREA IV 1431/25in force2025-12-31Survey operations by vessel BOS PRINCESS continue until 31 Dec 2026 off Guyana; wide berth requested.North Atlantic · Guyana
- NAVAREA IV 1430/25in force2025-12-31Underwater operations by vessel Aldemir Souza Tide continue until 31 Dec 2026 in the North Atlantic; wide berth requested.North Atlantic
- NAVAREA IV 12/24in force2024-01-03Underwater operations are in progress by vessels Bourbon Calm and Bourbon Sapphire in the Western North Atlantic; wide berth requested.Western North Atlantic
Longest in force
- NAVAREA IV 12/24in force2024-01-03 · 961 dUnderwater operations are in progress by vessels Bourbon Calm and Bourbon Sapphire in the Western North Atlantic; wide berth requested.Western North Atlantic
- NAVAREA IV 1430/25in force2025-12-31 · 234 dUnderwater operations by vessel Aldemir Souza Tide continue until 31 Dec 2026 in the North Atlantic; wide berth requested.North Atlantic
- NAVAREA IV 1431/25in force2025-12-31 · 234 dSurvey operations by vessel BOS PRINCESS continue until 31 Dec 2026 off Guyana; wide berth requested.North Atlantic · Guyana
- NAVAREA IV 98/26in force2026-02-03 · 200 dSurvey operations by vessel Fugro Brasilis are ongoing until 31 December 2026 off Guyana; wide berth requested.North Atlantic · Guyana
- NAVAREA IV 496/26in force2026-05-26 · 88 dUnderwater operations by vessel Normand Navigator continue near Suriname from June 1 to August 31, requesting one mile berth.North Atlantic · Suriname
By month (all years)
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Other hazards in the North Atlantic Ocean
Archive · 1,057 cancelled
- NAVAREA IV 210/192019-03-14 → 2019-04-08Survey operations in progress until 30 jun by M/V ramform tethys, M/V thor magni and M/V delta monarch in…Western North Atlantic · Guyana
- NAVAREA IV 206/192019-03-13 → 2019-03-30Survey operations in progress thru 29 mar by M/V markma in area bound by 07-07.60N 056-33.90W, 07-06.90N…Western North Atlantic · Guyana
- NAVAREA IV 177/192019-03-07 → 2019-07-02Survey operations 11 mar thru 01 jul by M/V fugro brasilis in area bound by 08-01.23N 057-10.14W, 07-55.33N…Western North Atlantic · Guyana
- HYDROLANT 478/192019-02-14 → 2019-05-01Survey operations in progress until 010001Z may by M/V ramform atlas towing 12 9000 meter long cables in…Eastern North Atlantic · Guinea-bissau
- HYDROLANT 451/192019-02-11 → 2019-02-13Underwater operations until 130001Z feb by M/V furgo discovery in vicinity of trackline joining 45-48N…Eastern North Atlantic · Bay of Biscay · France
- NAVAREA IV 82/192019-02-05 → 2019-02-25Survey operations 09 thru 24 feb by M/V regulus in area bound by 07-37.8N 057-15.9W, 07-36.7N 057-13.6W,…Western North Atlantic · Guyana
- NAVAREA IV 74/192019-02-01 → 2019-06-27Underwater operations in progress until 30 jun by M/V skandi neptune in area bound by 08-08.38N 056-57.95W,…Western North Atlantic
- NAVAREA IV 32/192019-01-17 → 2019-03-14Survey operations in progress until 12 apr by M/V ramform tethys, M/V thor magni and M/V delta monarch in…Western North Atlantic · Guyana
- NAVAREA IV 27/192019-01-14 → 2019-01-17Survey operations in progress until 12 apr by M/V ramform tethys, M/V thor magni, and M/V delta monarch in…Western North Atlantic · Guyana
- NAVAREA IV 24/192019-01-12 → 2019-01-14Survey operations in progress until 12 apr by M/V ramform tethys, M/V thor magni, and M/V delta monarch in…Western North Atlantic · Guyana
- NAVAREA IV 5/192019-01-04 → 2019-02-17Survey operations 05 jan thru 16 feb by M/V harrier explorer in area bound by 07-02.83N 055-11.21W,…Western North Atlantic · Suriname
- NAVAREA IV 1071/182018-12-16 → 2019-01-25Survey operations in progress until further notice by M/V ramform tethys and M/V ramform atlas, each towing…Western North Atlantic · Guyana
- HYDROLANT 3737/182018-11-30 → 2018-12-10Survey operations in progress until 100001Z dec by mv/ bgp challenger towing one 12000 meter long cable in…Eastern North Atlantic
- NAVAREA IV 1017/182018-11-28 → 2019-01-01Underwater operations 01 thru 31 dec by M/V nor da vinci in 10-26.54N 060-26.08WWestern North Atlantic · Trinidad
- HYDROLANT 3622/182018-11-21 → 2018-11-30Survey operations 250001Z nov to 150001 dec by mv/ bgp challenger towing one 12000 meter long cable in area…Eastern North Atlantic
- NAVAREA IV 988/182018-11-16 → 2018-12-07Underwater operations in progress until 06 dec by M/V sea service in areas bound by: a. 10-32.91N…Western North Atlantic · Trinidad
- NAVAREA IV 987/182018-11-16 → 2018-12-01Survey operations in progress until 30 nov by M/V fugro searcher towing two 1200 meter long cables in areas…Western North Atlantic · Trinidad
- NAVAREA IV 971/182018-11-13 → 2019-01-17Survey operations 14 nov thru 16 jan 19 by M/V atlantic guardian in: a. 09-33.79N 054-38.33WWestern North Atlantic · Suriname
- NAVAREA IV 967/182018-11-11 → 2018-11-30Survey operations in progress until 29 nov by M/V james cook in: a. 26-29.69N 070-31.42W b. 26-28.73N…Western North Atlantic · Bahamas
- HYDROLANT 3368/182018-10-29 → 2018-11-21Survey operations in progress until 25 nov by M/V bgp challenger towing one 12000 meter long cable in area…Eastern North Atlantic
- HYDROLANT 3345/182018-10-26 → 2018-12-05Survey operations 30 oct thru 04 dec by M/V maria s merian in vicinity 47-27N 008-32WEastern North Atlantic · Celtic Sea
- NAVAREA IV 868/182018-10-15 → 2018-11-02Underwater operations 18 oct thru 01 nov by M/V sea service in areas bound by: a. 10-33.00N 059-17.50W,…Western North Atlantic · Tobago
- NAVAREA IV 865/182018-10-15 → 2018-11-11Survey operations in progress until 10 nov by M/V fugro searcher towing two 1200 meter long cables in areas…Western North Atlantic · Trinidad
- NAVAREA IV 858/182018-10-13 → 2018-10-15Survey operations in progress until 31 oct by M/V fugro searcher in area bound by 10-06.77N 060-08.89W,…Western North Atlantic · Trinidad
- HYDROLANT 3164/182018-10-08 → 2018-10-29Survey operations in progress until 10 nov by M/V bgp challenger towing one 12000 meter long cable in area…Eastern North Atlantic · Western Saharah
- HYDROLANT 3137/182018-10-05 → 2019-01-11Survey operations 08 oct thru 15 jan by M/V bgp prospector towing 12 8000 meter long cables in area bound by…Eastern North Atlantic · Guinea-bissau
- NAVAREA IV 827/182018-10-04 → 2018-11-11Survey operations in progress until 10 nov by M/V lady lee, M/V maria jose II and M/V geoexplorer in: a.…Western North Atlantic · Suriname
- HYDROLANT 3093/182018-10-01 → 2019-03-18Survey operations 05 oct thru 01 apr 19 by M/V polarcus adira in area bound by 20-00N 019-03W, 20-00N…Eastern North Atlantic · Mauritania
- HYDROLANT 3088/182018-10-01 → 2018-11-10Survey operations in progress until 09 nov by M/V comte higor II in 01-24.02N 049-14.93WWestern North Atlantic · Brazil-north Coast
- HYDROLANT 2910/182018-09-14 → 2018-12-02Survey operations in progress by M/V oceanic vega towing 12 9300 meter long cables in area bound by 61-44.6N…Eastern North Atlantic · Norwegian Sea · Shetland Islands
- NAVAREA IV 759/182018-09-10 → 2018-10-15Survey operations 14 sept thru 14 oct 18 by M/V fugro explorer in area bound by 10-06.77N 060-08.89W,…Western North Atlantic · Trinidad
- NAVAREA IV 713/182018-08-31 → 2019-03-08Survey operations 05 sep until further notice by M/V fugro supporter in areas bound by: a. 07-16.35N…Western North Atlantic · Guyana
- HYDROLANT 2750/182018-08-29 → 2018-08-30Underwater operations 300600Z to 301000Z aug by M/V dar al beida in 47-27.12N 008-32.03WEastern North Atlantic
- HYDROLANT 2718/182018-08-26 → 2018-08-31Survey operations in progress until 22 sep by M/V sarmiento de gamboa in area bound by 40-28N 013-30W,…Eastern North Atlantic · Morocco · Portugal
- NAVAREA IV 687/182018-08-22 → 2018-09-12Survey operations in progress until 11 sep by M/V bgp challenger towing one 12000 meter long cable in area…Eastern Caribbean Sea · Barbados
- HYDROLANT 2661/182018-08-20 → 2018-11-01Survey operations in progress until 312359Z oct by M/V polar empress towing ten 7050 meter long cables in…Eastern North Atlantic · Morocco
- NAVAREA IV 671/182018-08-20 → 2018-09-16Survey operations 22 aug thru 30 sep by M/V ramform hyperion towing 16 8100 meter long cables in area bound…Western North Atlantic
- HYDROLANT 2655/182018-08-20 → 2018-09-14Survey operations in progress by M/V oceanic vega towing 12 9300 meter long cables in area bound by 60-55.9N…Eastern North Atlantic · Norwegian Sea · Shetland Islands
- NAVAREA IV 646/182018-08-10 → 2018-11-01Survey operations in progress until 31 oct by M/V sable in area bound by 06-46.71N 057-55.38W, 07-52.18N…Western North Atlantic · Guyana
- NAVAREA IV 645/182018-08-10 → 2018-10-01Survey operations in progress until 31 sep by M/V fugro discovery and M/V expert surveyor in area bound by…Western North Atlantic · Guyana
- NAVAREA IV 615/182018-08-02 → 2018-08-25Underwater operations 03 thru 24 aug by M/V island pride in 10-16.01N 060-17.66WWestern North Atlantic · Trinidad
- HYDROLANT 2384/182018-07-24 → 2018-08-14Survey operations in progress until further notice by M/V geo coral towing 14 4600 meter long cables in area…Eastern North Atlantic · Shetland Islands
- HYDROLANT 2357/182018-07-20 → 2018-08-25Underwater operations 24 jul thru 24 aug by M/V meteor in area bound by 35-05N 009-32W, 35-14N 008-23W,…Eastern North Atlantic · Morocco
- HYDROLANT 2340/182018-07-18 → 2018-08-01Survey operations in progress until 31 jul by M/V sarmiento de gamboa in area bound by 34-58N 010-49W,…Eastern North Atlantic · Morocco
- HYDROLANT 2296/182018-07-13 → 2018-07-18Survey operations in progress until 28 jul by M/V sarmiento de gamboa in area bound by 33-54N 007-40W,…Eastern North Atlantic · Morocco
- HYDROLANT 2221/182018-07-08 → 2018-07-12Survey operations in progress until 12 jul by M/V sarmiento de gamboa in area bound by 42-47N 011-33W,…Eastern North Atlantic · Spain
- NAVAREA IV 537/182018-07-06 → 2018-09-16Survey operations 11 jul thru 15 sep by M/V lady lee, M/V maria jose ll and M/V geoexplorer in: A.06-09.63N…Western North Atlantic .suriname
- HYDROLANT 2060/182018-06-24 → 2018-06-26Survey operations in progress until further notice by M/V thalassa along trackline between 47-17.4N…Eastern North Atlantic
- HYDROLANT 2040/182018-06-23 → 2018-06-24Survey operations in progress until further notice by M/V thalassa along trackline between 45-47.8N…Eastern North Atlantic
- HYDROLANT 2032/182018-06-22 → 2018-06-23Survey operations in progress until further notice by M/V thalassa along trackline between 44-22.6N…Eastern North Atlantic
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.