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 1449/142014-06-10 → 2014-06-20
    Underwater operations in progress until 192359Z jun by M/V le suroit in: a. 37-04.9N 031-55.2W
    North Atlantic
  2. NAVAREA IV 409/142014-06-03 → 2016-07-04
    Western North Atlantic
  3. NAVAREA IV 408/142014-06-03 → 2017-04-18
    Western North Atlantic
  4. HYDROLANT 1367/142014-06-01 → 2014-06-02
    Underwater operations by M/V james cook: a. in progress until 011900Z jun along trackline between 27-48.90N…
    Eastern North Atlantic · Canary Islands
  5. HYDROLANT 1361/142014-05-31 → 2014-06-01
    Underwater operations in progress until 011900Z jun by M/V james cook along trackline between 27-48.9N…
    Eastern North Atlantic · Canary Islands
  6. NAVAREA IV 394/142014-05-30 → 2014-07-01
    Survey operations 310001Z may to 302359Z jun by M/V coriolis II in area bound by 42-23.62N 064-03.16W,…
    Western North Atlantic
  7. HYDROLANT 1340/142014-05-29 → 2014-05-31
    Underwater operations 291900Z to 311900Z may by M/V james cook along trackline joining 27-36.7N 014-12.7W,…
    Eastern North Atlantic · Canary Islands
  8. HYDROLANT 1326/142014-05-28 → 2014-05-29
    Underwater operations 281400Z to 291400Z may by M/V james cook in 27-10.5N 015-23.5W
    Eastern North Atlantic · Canary Islands
  9. HYDROLANT 1316/142014-05-26 → 2014-05-26
    Underwater operations in progress until 262100Z may by M/V james cook in 24-56.0N 021-16.4W
    Eastern North Atlantic
  10. HYDROLANT 1284/142014-05-21 → 2014-05-25
    Underwater operations 231600Z to 242300Z may by M/V james cook vicinity 23-46N 024-08W
    Eastern North Atlantic
  11. HYDROLANT 1171/142014-05-08 → 2014-05-19
    Oceanographic operations 120001Z to 182359Z may in area bound by 58-19N 014-38W, 57-50N 011-02W, 58-26N…
    Eastern North Atlantic
  12. HYDROLANT 1169/142014-05-08 → 2014-05-11
    Underwater operations 090001Z to 102359Z may by M/V pourquoi pas in area bound by 36-56N 007-51W, 36-58N…
    Eastern North Atlantic · Gulf of Cadiz
  13. HYDROLANT 1162/142014-05-07 → 2014-05-09
    Underwater operations 080001Z to 082359Z may by M/V pourquoi pas in area bound by 36-00N 005-53W, 36-00N…
    Strait of Gibraltar
  14. NAVAREA IV 322/142014-05-06 → 2014-05-24
    B. WBAL5, 26-32.19N 076-52.40W, at depth 500 meters, top float 430 meters
    Western North Atlantic · Bahamas
  15. HYDROLANT 1144/142014-05-05 → 2014-05-12
    Oceanographic operations 061400Z to 120600Z may in area bound by 64-36N 013-10W, 64-30N 000-56W, 59-00N…
    Eastern North Atlantic · Norwegian Sea
  16. HYDROLANT 1143/142014-05-05 → 2014-05-07
    Underwater operations in progress until 082359Z may by M/V pourquoi pas in area bound by 36-24N 007-18W,…
    Strait of Gibraltar
  17. NAVAREA IV 310/142014-05-02 → 2014-05-05
    Underwater operations in progress until 050900Z may by M/V james cook in: a. 26-32.1N 075-42.2W
    Western North Atlantic · Bahamas
  18. NAVAREA IV 303/142014-04-29 → 2014-05-02
    Underwater operations 300230Z apr to 020230Z may by M/V james cook in: a. 27-06.0N 076-36.7W
    Western North Atlantic · Bahamas
  19. HYDROLANT 600/142014-02-26 → 2014-03-13
    Survey operations in progress until 12 mar by M/V investigator vicinity 12-16N 017-05W
    Eastern North Atlantic · Senegal
  20. HYDROLANT 571/142014-02-24 → 2014-03-14
    Underwater operations 260001Z feb to 140001Z mar by M/V thalassa in area bound by 20-00N 017-24W, 20-00N…
    Eastern North Atlantic · Mauritania · Senegal
  21. NAVAREA IV 22/142014-01-09 → 2014-02-07
    Underwater operations 14 jan thru 06 feb by M/V pourquoi pas with submersible in area bound by 21-03.363N…
    Western North Atlantic
  22. HYDROLANT 2788/132013-11-06 → 2013-12-13
    Underwater operations 08 nov thru 12 dec by M/V antea in area bound by 22-00N 016-00W, 30-00N 010-00W,…
    Eastern North Atlantic · Morocco · Western Sahara
  23. HYDROLANT 2640/132013-10-22 → 2013-10-29
    Underwater operations in progress until 28 oct by M/V maria s. merian in area bound by 29-01.93N 010-45.79W,…
    Eastern North Atlantic · Morocco
  24. HYDROLANT 2603/132013-10-19 → 2013-10-22
    Underwater operations in progress until further notice by M/V maria s. merain in area bound by 32-34.70N…
    Eastern North Atlantic · Morocco
  25. HYDROLANT 2144/132013-09-02 → 2013-09-24
    Underwater operations in progress until 240001Z sep by M/V ocean endeavour in areas bound by: a. 13-54.57N…
    Eastern North Atlantic · Senegal
  26. HYDROLANT 2013/132013-08-17 → 2013-08-21
    Underwater operations 17 thru 20 aug by M/V james cook in area bound by 37-33.7N 010-08.5W, 37-42.5N…
    Eastern North Atlantic · Portugal
  27. HYDROLANT 2000/132013-08-16 → 2013-08-17
    Underwater operations in progress until 19 aug by M/V james cook in: a. 37-35.4N 010-40.6W
    Eastern North Atlantic · Portugal
  28. NAVAREA IV 462/132013-08-03 → 2013-12-02
    Grand Banks
    Western North Atlantic
  29. HYDROLANT 1874/132013-08-02 → 2013-08-22
    Underwater operations 03 thru 21 aug by M/V pourquoi pas with submersible along trackline joining 37-51N…
    North Atlantic · Azores
  30. HYDROLANT 1578/132013-06-29 → 2013-07-24
    Underwater operations in progress until 23 jul by M/V james cook with submersible in area bound by 55-57N…
    Eastern North Atlantic · Ireland
  31. HYDROLANT 1547/132013-06-25 → 2013-08-03
    Underwater operations 27 jun thru 02 aug by M/V antea along trackline joining 28-16N 012-14W, 28-00N…
    Eastern North Atlantic · Morocco · Western Sahara
  32. HYDROLANT 497/132013-02-22 → 2013-03-08
    Hydrographic survey 26 feb thru 07 mar by M/V garnier sampaio in area bound by 00-43.82N 046-25.88W,…
    Brazil-north Coast
  33. HYDROLANT 173/132013-01-19 → 2013-03-13
    Underwater operations in progress until 28 mar vicinity 05-01.4N 009-51.8W
    Gulf of Guinea · Liberia
  34. HYDROLANT 2846/122012-12-02 → 2012-12-11
    Hydrographic survey 03 thru 10 dec by M/V d. carlos I in area bound by 32-09.78N 021-54.43W, 32-11.59N…
    Eastern North Atlantic
  35. NAVAREA IV 684/122012-11-15 → 2012-11-25
    B. 26-28.69N 075-42.17W
    Western North Atlantic · Bahamas
  36. NAVAREA IV 524/122012-09-11 → 2013-01-05
    Oceanographic operations 110800Z sep until further notice by M/V nrp almirante gago coutinho with…
    North Atlantic
  37. NAVAREA IV 522/122012-09-10 → 2012-09-16
    Oceanographic operations 10 thru 15 sep by M/V nrp d carlos along trackline joining 39-25.810N 040-02.988W,…
    North Atlantic
  38. HYDROLANT 2086/122012-09-08 → 2012-09-11
    Oceanographic operations by M/V thalassa: a. 09 sep in area between 25-00N 27-00N and 035-00W 037-00W
    North Atlantic
  39. NAVAREA IV 518/122012-09-08 → 2012-09-11
    Oceanographic operations by M/V thalassa: a. 09 sep in area between 25-00N 27-00N and 035-00W 037-00W
    North Atlantic
  40. NAVAREA IV 481/122012-08-27 → 2012-09-04
    Oceanographic operations in progress until 03 sep by M/V nrp d carlos along trackline joining 46-06.18N…
    North Atlantic
  41. HYDROLANT 1967/122012-08-27 → 2012-09-04
    Oceanographic operations in progress until 03 sep by M/V nrp d carlos along trackline joining 46-06.18N…
    North Atlantic
  42. HYDROLANT 1892/122012-08-17 → 2012-08-20
    Oceanographic operations until 19 aug by M/V urania along trackline joining 36-59.0N 007-10.0W, 36-00.0N…
    Eastern North Atlantic · Bay of Cadiz
  43. NAVAREA IV 453/122012-08-16 → 2012-08-18
    Underwater operations in progress until 12 sep by M/V thalassa along trackline between 27-36N 016-00W and…
    Eastern North Atlantic
  44. HYDROLANT 1884/122012-08-16 → 2012-08-25
    Underwater operations in progress until 12 sep by M/V thalassa along trackline between 27-36N 016-00W and…
    Eastern North Atlantic
  45. HYDROLANT 1789/122012-08-04 → 2012-08-08
    Underwater operations by M/V thalassa: a. 05 aug in 37-36N 038-22W
    North Atlantic · Azores
  46. NAVAREA IV 424/122012-08-04 → 2012-08-08
    Underwater operations by M/V thalassa: a. 05 aug in 37-36N 038-22W
    North Atlantic · Azores
  47. NAVAREA IV 421/122012-08-03 → 2012-08-04
    Underwater operations by M/V thalassa: a. 04 and 05 aug in 33-27N 032-24W
    North Atlantic · Azores
  48. HYDROLANT 1779/122012-08-03 → 2012-08-04
    Underwater operations by M/V thalassa: a. 04 and 05 aug in 33-27N 032-24W
    North Atlantic · Azores
  49. HYDROLANT 1765/122012-08-02 → 2012-08-04
    Underwater operations by M/V thalassa: a. 02 aug in 36-15.0N 029-19.9W
    North Atlantic · Azores
  50. HYDROLANT 1613/122012-07-17 → 2012-07-25
    Underwater operations in progress until 24 jul by M/V thalassa with submersible in 37-17N 032-16W
    North Atlantic · Azores

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 16 · seahazards