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

  1. NAVAREA IV 708/26in force2026-07-21
    Survey operations by vessel FUGRO DISCOVERY in North Atlantic off Virginia from July 23 to August 26, wide berth requested.
    North Atlantic · Virginia
  2. NAVAREA IV 705/26in force2026-07-20
    Survey operations are underway until 31 December near Guyana by vessel AHT DN87 and tug TELESTO; wide berth requested.
    North Atlantic · Guyana
  3. NAVAREA IV 621/26in force2026-06-24
    Underwater operations by vessel Prinsengracht continue in Guyana until 31 Dec; wide berth requested.
    North Atlantic · Guyana
  4. NAVAREA IV 616/26in force2026-06-23
    Survey operations by vessel Moonrise G continue in Guyana waters until November 15; wide berth requested.
    North Atlantic · Guyana
  5. NAVAREA IV 615/26in force2026-06-23
    Survey operations by vessel BGP Prospector continue in the North Atlantic near Guyana until November 15, with wide berth requested.
    North Atlantic · Guyana
  6. NAVAREA IV 586/26in force2026-06-15
    Underwater operations by vessel Normand Navigator continue until 31 Dec near Guyana, wide berth requested.
    North Atlantic · Guyana
  7. NAVAREA IV 552/26in force2026-06-09
    Survey operations are underway until 16 November by vessel SeaQuest in an area near 58°W 07°N, wide berth requested.
  8. NAVAREA IV 551/26in force2026-06-09
    Survey 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.
  9. NAVAREA IV 538/26in force2026-06-05
    Underwater 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
  10. NAVAREA IV 539/26in force2026-06-05
    Underwater 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
  11. NAVAREA IV 496/26in force2026-05-26
    Underwater operations by vessel Normand Navigator continue near Suriname from June 1 to August 31, requesting one mile berth.
    North Atlantic · Suriname
  12. NAVAREA IV 98/26in force2026-02-03
    Survey operations by vessel Fugro Brasilis are ongoing until 31 December 2026 off Guyana; wide berth requested.
    North Atlantic · Guyana
  13. NAVAREA IV 1431/25in force2025-12-31
    Survey operations by vessel BOS PRINCESS continue until 31 Dec 2026 off Guyana; wide berth requested.
    North Atlantic · Guyana
  14. NAVAREA IV 1430/25in force2025-12-31
    Underwater operations by vessel Aldemir Souza Tide continue until 31 Dec 2026 in the North Atlantic; wide berth requested.
    North Atlantic
  15. NAVAREA IV 12/24in force2024-01-03
    Underwater 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

  1. NAVAREA IV 12/24in force2024-01-03 · 962 d
    Underwater operations are in progress by vessels Bourbon Calm and Bourbon Sapphire in the Western North Atlantic; wide berth requested.
    Western North Atlantic
  2. NAVAREA IV 1430/25in force2025-12-31 · 234 d
    Underwater operations by vessel Aldemir Souza Tide continue until 31 Dec 2026 in the North Atlantic; wide berth requested.
    North Atlantic
  3. NAVAREA IV 1431/25in force2025-12-31 · 234 d
    Survey operations by vessel BOS PRINCESS continue until 31 Dec 2026 off Guyana; wide berth requested.
    North Atlantic · Guyana
  4. NAVAREA IV 98/26in force2026-02-03 · 200 d
    Survey operations by vessel Fugro Brasilis are ongoing until 31 December 2026 off Guyana; wide berth requested.
    North Atlantic · Guyana
  5. NAVAREA IV 496/26in force2026-05-26 · 88 d
    Underwater operations by vessel Normand Navigator continue near Suriname from June 1 to August 31, requesting one mile berth.
    North Atlantic · Suriname

By year

97
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

Other hazards in the North Atlantic Ocean

Archive · 1,057 cancelled

  1. HYDROLANT 1452/122012-07-02 → 2012-07-12
    Underwater operations 030001Z to 120730Z jul by M/V sarmiento de gamboa along trackline joining 48-24.77N…
    Eastern North Atlantic
  2. HYDROLANT 1385/122012-06-25 → 2012-07-07
    Underwater operations 29 jun thru 06 jul by M/V thalassa with submersible along tracklinwe between 40-21N…
    North Atlantic · Azores
  3. HYDROLANT 1351/122012-06-21 → 2012-07-07
    Underwater operations 22 jun thru 23 jul by M/V sarmiento de gamboa along trackline joining 41-16.59N…
    Eastern North Atlantic
  4. HYDROLANT 1261/122012-06-12 → 2012-06-22
    Underwater operations in progress until 30 jun by M/V discovery in area bound by 48-09.10N 009-37.18W,…
    Eastern North Atlantic
  5. HYDROLANT 890/122012-04-25 → 2012-05-07
    Survey operations in progress until 12 may by M/V polarcus naila towing ten 8000 meter long cables in area…
    Eastern North Atlantic · Portugal-southeast Coast
  6. HYDROLANT 889/122012-04-25 → 2012-04-25
    Survey operations in progress until 12 may by M/V polarcus naila towing ten 8000 meter long cables in area…
    Eastern North Atlantic · Portugal-southeast Coast
  7. HYDROLANT 886/122012-04-24 → 2012-04-25
    Survey operations in progress until 12 may by M/V polarcus naila towing ten 8000 meter long cables in area…
    Eastern North Atlantic · Portugal-southeast Coast
  8. HYDROLANT 659/122012-03-24 → 2012-03-26
    Underwater operations 25 mar by M/V thalassa along trackline between 46-48N 005-55W and 46-00N 005-55W
    Eastern North Atlantic · Bay of Biscay
  9. NAVAREA IV 21/122012-01-28 → 2012-03-08
    Survey operations in progress until 07 mar by M/V osprey explorer towing 6.5 mile long cable in area bound…
    Western North Atlantic · Barbados
  10. HYDROLANT 226/122012-01-28 → 2012-01-28
    Survey operations in progress until 07 mar by M/V osprey explorer towing 6.5 mile long cable in area bound…
    Western North Atlantic · Barbados
  11. HYDROLANT 2208/112011-12-21 → 2011-12-21
    Underwater operations in progress until further notice by M/V meteor in area bound by 36-04.87N 010-34.99W,…
    Eastern North Atlantic
  12. HYDROLANT 2175/112011-12-16 → 2011-12-20
    Underwater operations in progress until further notice by M/V meteor within 20 miles of 36-45N 011-35W
    Eastern North Atlantic
  13. HYDROLANT 2157/112011-12-14 → 2011-12-16
    Underwater operations in progress until further notice by M/V meteor within 25 miles of 38-00N 011-00W
    Eastern North Atlantic
  14. HYDROLANT 2115/112011-12-10 → 2011-12-14
    Underwater operations 121200Z to 151200Z dec by M/V meteor within 20 miles of 45-00N 008-40W
    Eastern North Atlantic · Bay of Biscay
  15. HYDROLANT 1315/112011-08-19 → 2011-08-26
    Underwater operations 201900Z to 270100Z aug by M/V cornide de saavedra along trackline between 43-00N…
    Eastern North Atlantic · Spain-northwest Coast
  16. HYDROLANT 1247/112011-08-08 → 2011-08-09
    Underwater operations 091000Z to 091800Z aug by M/V l'atalante with submersible in 37-25N 019-30W
    Eastern North Atlantic
  17. HYDROLANT 1245/112011-08-07 → 2011-08-08
    Underwater operations 09 aug by M/V l'atalante with submersible in 37-50N 017-20W
    Eastern North Atlantic
  18. NAVAREA IV 215/112011-07-04 → 2011-07-22
    Survey operations 09 thru 21 jul by M/V le suroit towing equipment in areas bound by: a. 42-56.9N 058-04.2W,…
    Western North Atlantic · Newfoundland-south Coast
  19. HYDROLANT 1056/112011-06-27 → 2011-06-29
    Underwater operations in progress until 28 jun by M/V meteor along trackline joining 49-08.50N 011-16.97W,…
    Eastern North Atlantic
  20. HYDROLANT 1037/112011-06-23 → 2011-07-26
    Survey operations 26 jun thru 27 jul by M/V pourquoi pas with submersible in area bound by 37-17.3N…
    North Atlantic · Azores
  21. NAVAREA IV 204/112011-06-22 → 2011-07-04
    Survey operations 25 jun thru 03 jul by M/V le suroit in area bound by 37-04.81N 031-55.21W, 39-25.28N…
    North Atlantic · Azores
  22. HYDROLANT 1035/112011-06-22 → 2011-07-04
    Survey operations 25 jun thru 03 jul by M/V le suroit in area bound by 37-04.81N 031-55.21W, 39-25.28N…
    North Atlantic · Azores
  23. NAVAREA IV 195/112011-06-13 → 2011-06-23
    Survey operations in progress until further notice by M/V cape hatteras, M/V endeavor and M/V oceanus within…
    Western North Atlantic
  24. NAVAREA IV 191/112011-06-11 → 2011-06-13
    Survey operations in progress until further notice by M/V cape hatteras, M/V endeavor and M/V oceanus within…
    Western North Atlantic
  25. NAVAREA IV 186/112011-06-03 → 2011-06-11
    Survey operations in progress until further notice by M/V cape hatteras, M/V endeavor and M/V oceanus within…
    Western North Atlantic
  26. HYDROLANT 655/112011-04-19 → 2011-05-02
    Underwater operations in progress until further notice by M/V ogs explora along trackline joining 35-53.3N…
    Gulf of Cadiz · Alboran Sea
  27. HYDROLANT 1836/102010-09-28 → 2010-10-29
    Survey operations in progress until further notice by M/V toisa vigilant in area bound by 59-54N 009-00W,…
    Eastern North Atlantic
  28. HYDROLANT 1823/102010-09-26 → 2010-09-28
    Survey operations in progress until further notice by M/V toisa vigilant in area bound by 59-42N 009-00W,…
    Eastern North Atlantic
  29. HYDROLANT 1689/102010-09-08 → 2010-09-15
    Underwater operations in progress until further notice by M/V poseidon with submersible vicinity of 31-00N…
    Eastern North Atlantic · Canary Islands
  30. NAVAREA IV 328/102010-07-31 → 2010-08-10
    Underwater operations 03 thru 09 aug by M/V le suroit along trackline joining 37-04-48N 031-57-00W,…
    North Atlantic
  31. HYDROLANT 1470/102010-07-31 → 2010-08-10
    Underwater operations 03 thru 09 aug by M/V le suroit along trackline joining 37-04-48N 031-57-00W,…
    North Atlantic
  32. NAVAREA IV 310/102010-07-22 → 2010-07-31
    Underwater operations 27 jul thru 10 aug by M/V le suroit along trackline joining 37-04-48N 031-57-00W,…
    North Atlantic
  33. HYDROLANT 1398/102010-07-22 → 2010-07-31
    Underwater operations 27 jul thru 10 aug by M/V le suroit along trackline joining 37-04-48N 031-57-00W,…
    North Atlantic
  34. HYDROLANT 1048/102010-06-07 → 2010-06-19
    Oceanographic operations 090300Z to 191400Z jun by M/V thalassa along trackline joining 46-00.00N…
    Eastern North Atlantic
  35. HYDROLANT 1046/102010-06-07 → 2010-06-07
    Oceanographic operations 090300Z jun until further notice by M/V thalassa vicinity 46-00N 008-10W
    Bay of Biscay
  36. HYDROLANT 1042/102010-06-07 → 2010-06-07
    Oceanographic operations 102100Z to 191400Z jun by M/V thalassa along trackline joining 40-19.98N…
    Eastern North Atlantic
  37. HYDROLANT 948/102010-05-25 → 2010-05-27
    Oceanographic operations in progress until 28 may by M/V hesperides along trackline between 33-39N 009-00W…
    Eastern North Atlantic
  38. HYDROLANT 797/102010-05-06 → 2010-05-20
    Survey operations by M/V pourquoi pas: a. 090001Z to 110001Z may along trackline between 41-26.4N 009-08.8W…
    Eastern North Atlantic · Portugal-west Coast
  39. HYDROLANT 2051/092009-10-24 → 2009-10-26
    Underwater operations 240700Z to 260700Z oct by M/V discovery in 27-52N 013-32W
  40. HYDROLANT 2043/092009-10-22 → 2009-10-23
    Underwater operations 221400Z to 230001Z oct by M/V discovery in 28-27N 015-40W
  41. HYDROLANT 2001/092009-10-16 → 2009-11-12
    Oceanographic operations 17 oct thru 11 nov by M/V hesperides along trackline joining 37-00.0N 010-02.7W,…
  42. HYDROLANT 1887/092009-09-30 → 2009-10-05
    Underwater operations 01 thru 04 oct by M/V poirquoi pas vicinity 44-30N 015-25W
  43. HYDROLANT 1489/092009-08-07 → 2009-08-14
    Oceanographic operations in progress until 140800Z aug by M/V sarmiento de gamboa along trackline between…
  44. HYDROLANT 1484/092009-08-07 → 2009-08-07
    Oceanographic operations in progress until 140800Z aug by M/V sarmiento de gamboa along trackline between…
  45. HYDROLANT 1451/092009-08-02 → 2009-08-07
    Oceanographic operations in progress until further notice by M/V sarmiento de gamboa vicinity 41-22N 020-03W
  46. HYDROLANT 1370/092009-07-24 → 2009-08-17
    Oceanographic operations 26 jul thru 16 aug by M/V pourquoi pas with submersible within 70 miles of 03-00N…
  47. NAVAREA IV 213/092009-06-08 → 2009-09-05
    Nga chart 14018 (6TH ed)
  48. HYDROLANT 1039/092009-06-06 → 2009-06-06
    Salvage operations in progress until further notice within 120 miles of 02-00N 030-00W
  49. HYDROLANT 491/092009-03-11 → 2009-04-04
    Underwater operations in progress until further notice by M/V laplace in area bound by 31-36.00N 009-46.55W,…
  50. HYDROLANT 1838/082008-10-30 → 2008-11-08
    Underwater operations in progress until 07 nov by M/V poseidon: a. in area bound by 40-30N 014-00W, 40-30N…

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.

Survey operations in the North Atlantic Ocean — page 17 · seahazards