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. HYDROLANT 421/232023-02-24 → 2023-02-26
    Survey operations in progress until 25 feb by M/V ramon margalef in vicinity 27-37.00N 017-59.00W
    Eastern North Atlantic · Canary Islands
  2. HYDROLANT 391/232023-02-20 → 2023-02-24
    Survey operations in progress until 24 feb by M/V ramon margalef in vicinity 27-37.00N 017-59.00W
    Eastern North Atlantic · Canary Islands
  3. NAVAREA IV 125/232023-02-01 → 2023-04-11
    Survey operations in progress until 10 apr by M/V gladys mc call and M/V atlantic spirit along trackline…
    Western North Atlantic · Suriname
  4. NAVAREA IV 123/232023-02-01 → 2023-02-01
    Survey operations in progress until 10 apr by M/V gladys mc call and M/V atlantic spirit along trackline…
    Western North Atlantic · Guyana
  5. NAVAREA IV 103/232023-01-24 → 2023-07-01
    Underwater operations in progress until 30 jun by M/V a'rinra, M/V c-legend and M/V wine island in area…
    Western North Atlantic
  6. HYDROLANT 119/232023-01-14 → 2023-01-16
    Underwater operations 15 jan thru 18 mar by M/V grand canyon III in area bound by 16-02.00N 016-52.00W,…
    Eastern North Atlantic · Senegal
  7. NAVAREA IV 27/232023-01-07 → 2023-09-01
    Survey operations in progress until 31 aug by M/V oceanic vega, M/V sanco scorpio and M/V drs retumbante…
    Western North Atlantic · Brazil
  8. HYDROLANT 59/232023-01-07 → 2023-09-01
    Survey operations in progress until 31 aug by M/V oceanic vega, M/V sanco scorpio and M/V drs retumbante…
    Western North Atlantic · Brazil
  9. HYDROLANT 27/232023-01-03 → 2023-02-07
    Oceanographic buoy established in 14-09.7N 017-30.7W
    Eastern North Atlantic · Senegal
  10. NAVAREA IV 11/232023-01-01 → 2023-07-07
    Underwater operations in progress until 31 dec by M/V seacor murray, M/V seacor amazon, M/V seacor mixteca,…
    Western North Atlantic
  11. NAVAREA IV 10/232023-01-01 → 2023-07-07
    Underwater operations in progress until 31 dec by M/V o rourke tide in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  12. NAVAREA IV 9/232023-01-01 → 2023-07-07
    Underwater operations in progress until 31 dec by M/V bourbon rhesos, M/V bourbon liberty 243, M/V bourbon…
    Western North Atlantic
  13. NAVAREA IV 8/232023-01-01 → 2024-01-01
    Survey operations in progress until 31 dec by M/V moonrise g, M/V 7 oceans, M/V sanco spirit, M/V rem…
    Western North Atlantic · Guyana
  14. NAVAREA IV 7/232023-01-01 → 2023-07-01
    Underwater operations in progress until 30 jun by M/V gary rook, M/V russell bouziga, M/V robert adams, M/V…
    Western North Atlantic
  15. NAVAREA IV 6/232023-01-01 → 2024-01-01
    Underwater operations in progress until 31 dec by M/V bourbon sapphire in area bound by 08-15.96N…
    Western North Atlantic
  16. NAVAREA IV 5/232023-01-01 → 2023-07-07
    Underwater operations in progress until 31 dec by M/V skandi skansen in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  17. NAVAREA IV 4/232023-01-01 → 2023-01-13
    Survey operations in progress until 31 dec by M/V aht sd power in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  18. NAVAREA IV 3/232023-01-01 → 2023-07-07
    Underwater operations in progress until 31 dec by M/V ssv maersk nomad in area bound by 08-15.96N…
    Western North Atlantic
  19. NAVAREA IV 2/232023-01-01 → 2023-07-07
    Survey operations in progress until 31 dec by M/V aht sd honour in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  20. NAVAREA IV 1375/222022-12-20 → 2023-02-05
    Survey operations 21 dec thru 31 mar 23 by M/V bgp prospector in area bound by 07-36.03N 054-35.33W,…
    Western North Atlantic · Suriname
  21. NAVAREA IV 1371/222022-12-19 → 2022-12-20
    Survey operations 21 dec thru 31 mar 23 by M/V bgp prospector in area bound by 07-36.03N 054-35.33W,…
    Western North Atlantic · French Guiana · Suriname
  22. NAVAREA IV 1354/222022-12-15 → 2023-02-05
    Survey operations 17 dec thru 15 feb 23 by M/V bgp prospector towing ten 9000 meter long cables in area…
    Western North Atlantic · Suriname
  23. HYDROLANT 3081/222022-11-30 → 2022-12-08
    Underwater operations in progress until further notice by M/V joides resolution in 37-57.60N 009-31.00W
    Eastern North Atlantic · Portugal
  24. NAVAREA IV 1238/222022-11-21 → 2023-01-01
    Underwater operations in progress until 31 dec by M/V dn 205 in area bound by 06-49.17N 058-12.00W,…
    Western North Atlantic
  25. NAVAREA IV 1225/222022-11-17 → 2023-01-01
    Underwater operations in progress until 31 dec by M/V maersk nomad in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  26. HYDROLANT 2940/222022-11-16 → 2022-11-30
    Underwater operations in progress until further notice by M/V joides resolution in 37-34.00N 010-07.70W
    Eastern North Atlantic · Portugal
  27. HYDROLANT 2868/222022-11-10 → 2022-12-07
    Survey operations in progress until further notice by M/V sarmiento de gamboa in area bound by 27-10.20N…
    Eastern North Atlantic · Canary Islands
  28. HYDROLANT 2812/222022-11-04 → 2022-12-05
    Survey operations 051000Z nov to 051000Z dec by M/V tenente castelo in area bound by 00-55.20N 049-56.00W,…
    Western North Atlantic · Brazil
  29. HYDROLANT 2776/222022-11-01 → 2022-11-16
    Underwater operations in progress until further notice by M/V joides resolution in 37-34.90N 010-21.50W
    Eastern North Atlantic · Portugal
  30. NAVAREA IV 1147/222022-10-29 → 2023-01-01
    Survey operations in progress until 31 dec by M/V sanco spirit, M/V moonrise g, M/V rem saltire, M/V 7…
    Western North Atlantic · Guyana
  31. HYDROLANT 2743/222022-10-28 → 2022-11-27
    Survey operations 30 oct thru 26 nov by M/V meteor in area bound by 48-09.00N 005-55.00W, 44-03.00N…
    Eastern North Atlantic · Bay of Biscay · Celtic Sea · Spain
  32. HYDROLANT 2735/222022-10-27 → 2022-11-27
    Survey operations 30 oct thru 26 nov by M/V meteor in area bound by 36-32.00N 006-25.00W, 36-37.00N…
    Eastern North Atlantic · Gulf of Cadiz · Morocco
  33. HYDROLANT 2713/222022-10-25 → 2022-11-03
    Survey operations 27 oct thru 02 nov 22 along trackline joining 48-04.62N 009-30.35W, 47-27.00N 008-32.00W,…
    Celtic Sea · Eastern North Atlantic
  34. NAVAREA IV 1116/222022-10-21 → 2022-12-01
    Trinidad and tobago
    Western North Atlantic
  35. HYDROLANT 2680/222022-10-21 → 2022-11-01
    Underwater operations by M/V janus II 170001Z oct thru 010001 nov in area bound by: 35-09.0N 006-41.0W,…
    Eastern North Atlantic · Morocco
  36. HYDROLANT 2640/222022-10-17 → 2022-11-01
    Underwater operations in progress until 011800Z nov by M/V joides resolution in area within 02.00 miles of…
    Eastern North Atlantic
  37. NAVAREA IV 1077/222022-10-12 → 2022-10-24
    Trinidad and tobago
    Eastern Caribbean Sea · Western North Atlantic
  38. NAVAREA IV 1075/222022-10-12 → 2022-12-21
    Trinidad and tobago
    Western North Atlantic
  39. NAVAREA IV 1064/222022-10-10 → 2022-10-13
    Louisiana to maryland
    Western North Atlantic · Gulf of Mexico
  40. NAVAREA IV 1051/222022-10-07 → 2023-04-05
    Survey operations 12 oct thru 04 apr 23 by M/V fugro brasilis in area bound by 07-55.00N 055-50.00W,…
    Western North Atlantic · Suriname
  41. NAVAREA IV 1041/222022-10-06 → 2022-10-29
    Survey operations in progress until 31 dec by M/V rem saltire, M/V moonrise g, M/V sanco spirit, and M/V 7…
    Western North Atlantic · Guyana
  42. HYDROLANT 2530/222022-10-05 → 2022-10-12
    Survey operations 06 thru 11 oct by M/V beautemps-beaupre in areas bound by: a. 48-19.00N 006-30.00W,…
    Bay of Biscay · Celtic Sea · Eastern North Atlantic · France
  43. NAVAREA IV 1020/222022-10-01 → 2022-10-16
    Trinidad and tobago
    Western North Atlantic · Eastern Caribbean Sea
  44. NAVAREA IV 1009/222022-09-29 → 2022-10-12
    Survey operations in progress until 11 oct by M/V fugro brasilis along trackline joining 09-57.33N…
    Eastern Caribbean Sea · Western North Atlantic · Trinidad
  45. HYDROLANT 2441/222022-09-26 → 2022-10-04
    Survey operations by M/V dar al beida in progress until further notice in area bound by 33-39.90N…
    Eastern North Atlantic · Morocco
  46. NAVAREA IV 987/222022-09-25 → 2022-10-01
    Trinidad and tobago
    Western North Atlantic
  47. NAVAREA IV 939/222022-09-16 → 2022-09-28
    Survey operations in progress until 27 sep by M/V fugro brasilis along trackline joining 09-55.51N…
    Eastern Caribbean Sea · Western North Atlantic · Trinidad
  48. NAVAREA IV 937/222022-09-15 → 2022-09-26
    Trinidad and tobago
    Western North Atlantic
  49. HYDROLANT 2277/222022-09-09 → 2022-09-18
    Survey operations 120001Z to 200001Z sep by M/V sarmiento de gamboa along trackline joining 37-15.50N…
    Eastern North Atlantic · Portugal
  50. NAVAREA IV 916/222022-09-09 → 2023-01-01
    Underwater operations in progress until 31 dec by M/V fast hauler in area bound by 08-15.96N 057-02.23W,…
    Western 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 — page 3 · seahazards