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 · 961 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 · 233 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 · 233 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 · 199 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. NAVAREA IV 799/262026-08-18 → 2026-08-19
    Underwater operations by vessel Atlantis are underway near 37-32.00N 074-14.00W in Delaware from August 30 to September 18, wide berth requested.
    North Atlantic · Delaware
  2. NAVAREA IV 791/262026-08-14 → 2026-08-19
    Survey operations by vessel Ocean Intervention II continue in the North Atlantic near Trinidad and Tobago until August 25, with a 500-meter berth requested.
    North Atlantic
  3. HYDROLANT 2092/242024-10-01 → 2026-08-17
    Survey operations are in progress until 14 Oct by four vessels towing 12 cables of 10000 meters in North Atlantic; wide berth requested.
    North Atlantic
  4. NAVAREA IV 1181/242024-09-27 → 2026-08-17
    Survey operations by the vessel Northern Franklin are underway in the eastern Caribbean Sea near Trinidad and Tobago from September 30 to October 31.
    Eastern Caribbean Sea · Western North Atlantic
  5. HYDROLANT 2035/242024-09-20 → 2026-08-17
    Survey operations in the Eastern North Atlantic from September 23 to October 16, wide berth requested.
    Eastern North Atlantic
  6. NAVAREA IV 820/242024-07-12 → 2026-08-17
    Survey operations in progress until 20 oct by M/V gyre in area bound by 09-18.52N 054-18.42W, 08-50.06N…
    Western North Atlantic · Suriname
  7. NAVAREA IV 819/242024-07-12 → 2026-08-17
    Survey operations in progress until 31 jan 25 by M/V sanco star and M/V siddis mariner in area bound by…
    Western North Atlantic · Suriname
  8. NAVAREA IV 711/242024-06-19 → 2026-08-17
    Underwater operations in progress until 31 dec by M/V home run p in areas bound by: a. 08-00.66N 056-44.58W,…
    Western North Atlantic
  9. NAVAREA IV 671/242024-06-11 → 2024-10-02
    Trinidad and tobago
    Western North Atlantic
  10. NAVAREA IV 622/242024-05-30 → 2024-10-02
    Survey operations 01 jun thru 01 jul by M/V proteus in area bound by 07-57.48N 054-27.24W, 08-05.36N…
    Western North Atlantic
  11. NAVAREA IV 574/242024-05-18 → 2024-10-02
    Survey operations in progress until 18 july by M/V amazon conqueror towing 12 6000 meter long cables in area…
    Western North Atlantic
  12. NAVAREA IV 568/242024-05-17 → 2024-10-02
    Underwater operations in progress until 30 jun by M/V parana in area bound by 07-02.18N 057-59.64W,…
    Western North Atlantic · Guyana
  13. NAVAREA IV 514/242024-05-07 → 2024-05-21
    Trinidad and tobago
    Western North Atlantic
  14. NAVAREA IV 398/242024-04-06 → 2024-04-17
    Survey operations in progress until 16 apr by M/V adel and M/V gillian island along trackline joining…
    Western North Atlantic · Guyana
  15. HYDROLANT 646/242024-03-29 → 2024-04-19
    Survey operations in progress until 29 apr by M/V maria s. merian in area bound by 26-12.00N 016-30.00W,…
    Eastern North Atlantic · Western Sahara
  16. NAVAREA IV 364/242024-03-29 → 2024-06-01
    Survey operations 30 mar thru 31 may by M/V harvey hermes in area bound by 07-13.32N 055-51.88W, 07-27.46N…
    Western North Atlantic · Suriname
  17. NAVAREA IV 331/242024-03-22 → 2024-04-01
    Trinidad and tobago
    Western North Atlantic
  18. NAVAREA IV 282/242024-03-14 → 2025-01-01
    Underwater operations 15 mar thru 31 dec by M/V jack edwards in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  19. NAVAREA IV 274/242024-03-12 → 2024-04-15
    Trinidad and tobago
    Western North Atlantic
  20. NAVAREA IV 227/242024-02-28 → 2025-01-01
    Underwater operations 01 mar thru 31 dec by M/V bourbon ruby in areas bound by: a. 08-00.66N 056-44.58W,…
    Western North Atlantic
  21. NAVAREA IV 171/242024-02-15 → 2025-01-01
    Survey operations in progress until 31 dec 24 by M/V siem day in areas bound by: a. 08-00.66N 056-44.58W,…
    Western North Atlantic
  22. NAVAREA IV 169/242024-02-14 → 2024-02-14
    Survey operations in progress thru 31 dec by M/V connor bordelon in area bound by 08-12.16N 056-49.26W,…
    Western North Atlantic · Guyana
  23. HYDROLANT 237/242024-02-02 → 2024-02-09
    Survey operations in progress until 082359Z feb by M/V ramon margalef in area within four miles of 28-00.00N…
    Eastern North Atlantic · Canary Islands
  24. HYDROLANT 221/242024-01-29 → 2024-02-07
    Survey operations in progress until 06 feb by r/v maria s. merian in area bound by 35-45.00N 008-00.00W,…
    Eastern North Atlantic · Morocco
  25. HYDROLANT 208/242024-01-28 → 2024-02-09
    Survey operations in progress until 090800Z feb by M/V sarmiento de gamboa in area bound by 28-34.70N…
    Eastern North Atlantic · Canary Islands
  26. NAVAREA IV 81/242024-01-26 → 2024-02-22
    Underwater operations 31 jan thru 21 feb by vessel M/V statia responder along trackline joining 10-08.82N…
    Western North Atlantic · Trinidad and Tobago
  27. HYDROLANT 167/242024-01-21 → 2024-02-01
    Survey operations 221900Z jan thru 010800Z feb by M/V sarmiento de gamboa in area bound by 28-16.80N…
    Eastern North Atlantic · Canary Islands
  28. NAVAREA IV 56/242024-01-17 → 2024-04-02
    Survey operations 20 jan thru 01 apr by M/V connor bordelon in: a. 07-13.32N 055-51.88W
    Western North Atlantic · Suriname
  29. NAVAREA IV 9/242024-01-03 → 2025-01-01
    Underwater operations in progress until 31 dec by tug bourbon liberty 308, tug bourbon liberty 243 and tug…
    Western North Atlantic · Guyana
  30. HYDROLANT 2956/232023-12-28 → 2023-12-29
    Underwater operations 281200Z dec until further notice by M/V joides resolution in vicinity 36-42.00N…
    Gulf of Cadiz · Portugal
  31. NAVAREA IV 1456/232023-12-15 → 2023-12-25
    Trinidad and tobago
    Western North Atlantic
  32. NAVAREA IV 1411/232023-12-05 → 2023-12-27
    Underwater operations 09 thru 26 dec by M/V leadership, M/V gladys mc call, and barge lead marlin along…
    Western North Atlantic · Trinidad and Tobago
  33. NAVAREA IV 1410/232023-12-05 → 2023-12-13
    Survey operations 08 thru 12 dec by M/V delta skipper along trackline joining 10-05.28N 060-21.36W,…
    Western North Atlantic · Trinidad and Tobago
  34. NAVAREA IV 1392/232023-12-01 → 2023-12-08
    Trinidad and tobago
    Western North Atlantic
  35. NAVAREA IV 1354/232023-11-22 → 2023-12-31
    Survey operations 26 nov thru 30 dec by M/V sea horse II along trackline joining 10-08.77N 060-59.41W,…
    Western North Atlantic · Trinidad and Tobago
  36. NAVAREA IV 1347/232023-11-19 → 2023-12-08
    Trinidad and tobago
    Western North Atlantic
  37. NAVAREA IV 1337/232023-11-17 → 2023-11-25
    Trinidad and tobago
    Western North Atlantic
  38. NAVAREA IV 1315/232023-11-11 → 2023-11-18
    Trinidad and tobago
    Eastern Caribbean Sea · Western North Atlantic
  39. NAVAREA IV 1290/232023-11-06 → 2023-11-18
    Survey operations in progress until 17 nov by M/V national energy explorer and M/V atlantic spirit in area…
    Western North Atlantic · Suriname
  40. NAVAREA IV 1282/232023-11-03 → 2023-11-11
    Trinidad and tobago
    Eastern Caribbean Sea · Western North Atlantic
  41. HYDROLANT 2518/232023-11-03 → 2023-11-06
    Survey operations 06 nov thru 17 by M/V ramon margalef in area bounded by: 36-00.0N 006-00.0W, 36-00.0N…
    Eastern North Atlantic · Strait of Gibraltar · Spain
  42. NAVAREA IV 1277/232023-11-03 → 2023-11-23
    Trinidad and tobago
    Western North Atlantic
  43. NAVAREA IV 1247/232023-10-27 → 2023-11-16
    Trinidad and tobago
    Eastern Caribbean Sea · Western North Atlantic
  44. NAVAREA IV 1219/232023-10-20 → 2023-10-26
    Trinidad and tobago
    Eastern Caribbean Sea · Western North Atlantic
  45. NAVAREA IV 1217/232023-10-20 → 2024-01-01
    Underwater operations in progress until 31 dec by M/V psv bourbon sapphire in areas bound by: a. 08-00.66N…
    Western North Atlantic · Guyana
  46. HYDROLANT 2312/232023-10-12 → 2023-10-15
    Survey operations 130001Z to 221200Z oct by M/V sarmiento de gamboa in area bound by 42-45.00N 010-45.00W,…
    Eastern North Atlantic · Spain
  47. HYDROLANT 2253/232023-10-05 → 2023-10-09
    Survey operations by M/V sarmeinto de gamboa: a. 06 oct in 41-52.70N 009-48.60W
    Eastern North Atlantic · Portugal
  48. HYDROLANT 2200/232023-09-29 → 2023-10-12
    Underwater operations 02 thru 11 oct by M/V atalante in area bound by 47-26.59N 006-34.33W, 46-52.40N…
    Celtic Sea · Eastern North Atlantic
  49. NAVAREA IV 1118/232023-09-25 → 2024-01-01
    Survey operations 28 sep thru 31 dec by M/V connor bordelon in area bound by 08-12.16N 056-49.26W, 08-07.97N…
    Western North Atlantic · Guyana
  50. HYDROLANT 2162/232023-09-25 → 2023-10-06
    Survey operations in progress until 060001Z oct by M/V pourquoi pas in area bound by 47-17.05N 009-17.05W,…
    Bay of Biscay · 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.

Survey operations in the North Atlantic Ocean · seahazards