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 652/212021-07-30 → 2021-10-16
    Survey operations 04 aug until 15 oct by M/V atlantic spirit in area bound by 08-00.70N 057-02.85W,…
    Western North Atlantic · Guyana
  2. NAVAREA IV 649/212021-07-30 → 2021-10-04
    Survey operations 04 aug until 04 nov by M/V springbok in area bound by 08-08.38N 056-51.53W, 07-59.88N…
    Western North Atlantic · Guyana
  3. HYDROLANT 1984/212021-07-30 → 2021-09-09
    Survey operations in progress 02 aug to 08 sep by S/V tara in area bound by 08-02.7N 052-33.2W, 06-47.7N…
    Western North Atlantic · French Guiana
  4. NAVAREA IV 646/212021-07-29 → 2021-08-13
    Survey operations 30 jul until further notice by M/V ramform atlas towing 14 9260 meter long cables in area…
    Western North Atlantic
  5. NAVAREA IV 642/212021-07-28 → 2021-08-04
    NAVAREA IV mobile offshore drilling units positions at 281223Z jul: a. the 150 29-14.4N 091-22.6W
  6. NAVAREA IV 639/212021-07-27 → 2021-08-06
    Underwater operations 01 thru 30 aug by M/V antea in 04-53N 051-27W
    Western North Atlantic · French Guiana
  7. HYDROLANT 1932/212021-07-24 → 2021-09-14
    Survey operations 25 jul until further notice by M/V urbano monti along trackline joining 33-35.9N…
    Eastern North Atlantic · Morocco
  8. NAVAREA IV 618/212021-07-21 → 2021-07-28
    NAVAREA IV mobile offshore drilling units positions at 211145Z jul: a. the 150 29-14.4N 091-22.6W
  9. NAVAREA IV 604/212021-07-16 → 2021-07-29
    Survey operations 17 jul until further notice by M/V ramform atlas towing 14 9260 meter long cables in area…
    Western North Atlantic
  10. NAVAREA IV 602/212021-07-15 → 2021-09-21
    Survey operations 20 jul thru 20 sep by M/V antea in area bound by 07-24.8N 053-16.8W, 05-29.5N 050-48.1W,…
    Western North Atlantic · French Guiana
  11. NAVAREA IV 600/212021-07-14 → 2021-07-21
    NAVAREA IV mobile offshore drilling units positions at 141700Z jul: a. the 150 29-14.4N 091-22.6W
  12. HYDROLANT 1848/212021-07-13 → 2021-08-01
    Underwater operations in progress until further notice by M/V ocean blackrhino in 13-46N 017-37W
    Eastern North Atlantic · Senegal
  13. NAVAREA IV 587/212021-07-09 → 2021-08-21
    Survey operations 11 jul thru 20 aug by M/V island pride in area bound by 11-37.65N 059-31.54W, 11-33.33N…
    Western North Atlantic · Tobago
  14. NAVAREA IV 580/212021-07-07 → 2022-01-01
    Underwater operations in progress until 31 dec by M/V pacific leader in area bound by 08-05.94N 056-56.97W,…
    Western North Atlantic
  15. NAVAREA IV 579/212021-07-07 → 2022-01-01
    Underwater operations in progress until 31 dec by M/V saipem in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  16. NAVAREA IV 577/212021-07-07 → 2022-01-01
    Underwater operations in progress until 31 dec by M/V bourbon liberty 243 in area bound by 08-11.04N…
    Western North Atlantic · Guyana
  17. NAVAREA IV 551/212021-07-02 → 2021-07-02
    Survey operations in progress until 31 oct by M/V wise fox, M/V risen star and M/V sealand chirp in area…
    Western North Atlantic · Guyana
  18. NAVAREA IV 546/212021-07-01 → 2021-07-05
    Survey operations 030001Z to 050001Z jul by M/V sarmiento de gamboa in area bound by 57-18.3N 035-22.1W,…
    North Atlantic
  19. HYDROLANT 1729/212021-07-01 → 2021-08-06
    Survey operations in progress until 25 aug by M/V antea in area bound by 05-22.5N 052-40.0W, 05-37.6N…
    Western North Atlantic · French Guiana
  20. NAVAREA IV 527/212021-06-24 → 2021-07-24
    Underwater operations in progress until 23 jul by M/V sbm installer in area bound by 08-01.5N 057-00.4W,…
    Western North Atlantic
  21. NAVAREA IV 525/212021-06-24 → 2022-01-01
    Underwater operations in progress until 31 dec by M/V skandi foula in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  22. NAVAREA IV 512/212021-06-19 → 2021-06-24
    Survey operations 201200Z to 241200Z jun by M/V sarmiento de gamboa along trackline joining 59-13.2N…
    North Atlantic · Greenland
  23. NAVAREA IV 478/212021-06-07 → 2021-07-16
    Survey operations 08 jun until further notice by M/V ramform atlas towing 14 9260 meter long cables and M/V…
    Western North Atlantic
  24. NAVAREA IV 474/212021-06-05 → 2022-01-01
    Underwater operations in progress until 31 dec by M/V bourbon rhesos and M/V aht bourbon clear in area bound…
    Western North Atlantic · Guyana
  25. HYDROLANT 1499/212021-06-04 → 2021-06-11
    Survey operations in progress until 102359Z jun by M/V sarmiento de gamboa in vicinity of trackline joining…
    Eastern North Atlantic · Portugal
  26. NAVAREA IV 470/212021-06-03 → 2022-01-01
    Survey operations 05 jun until 31 dec by M/V horizon geobay in area bound by 08-00N 057-25W, 08-00N 057-15W,…
    Western North Atlantic · Guyana
  27. HYDROLANT 1488/212021-06-02 → 2021-06-03
    Survey operations in progress until 082359Z jun by M/V sarmiento de gamboa along trackline joining 40-47.3N…
    Eastern North Atlantic · Portugal
  28. HYDROLANT 1426/212021-05-27 → 2021-06-02
    Survey operations 280001Z may to 090001Z jun by M/V sarmiento de gamboa along trackline joining 41-51.9N…
    Eastern North Atlantic · Portugal
  29. NAVAREA IV 451/212021-05-27 → 2021-09-11
    Survey operations in progress until further notice by M/V ramform titan towing 16 9000 meter long cables,…
    Western North Atlantic
  30. NAVAREA IV 427/212021-05-21 → 2021-05-27
    Survey operations in progress until further notice by M/V ramform titan towing 16 9000 meter long cables,…
    Western North Atlantic
  31. NAVAREA IV 419/212021-05-18 → 2021-06-15
    Underwater operations by M/V sea service in progress until 14 jun in areas bound by: a. 10-32.99N…
    Western North Atlantic · Eastern Caribbean Sea · Tobago
  32. NAVAREA IV 389/212021-05-09 → 2021-05-13
    Underwater operations in progress until 12 may by M/V it integrity along trackline joining 26-19.82N…
    Straits of Florida · Gulf of Mexico · Florida · Mexico
  33. NAVAREA IV 387/212021-05-09 → 2021-05-14
    Survey operations 13 may by M/V django and M/V itajara in: a. 04-49.0N 051-58.0W
    Western North Atlantic · French Guiana
  34. NAVAREA IV 383/212021-05-07 → 2022-01-01
    Underwater operations in progress until 31 dec by M/V saipem constellation in area bound by 08-05.94N…
    Western North Atlantic
  35. NAVAREA IV 374/212021-05-05 → 2021-05-12
    NAVAREA IV mobile offshore drilling units positions at 052200Z may in: a. the 150 29-14.4N 091-22.6W
  36. NAVAREA IV 371/212021-05-05 → 2021-05-13
    Underwater operations 09 thru 12 may by M/V django in: a. 05-44.6N 053-50.7W, 05-43.5N 053-49.9W, 05-43.4N…
    Western North Atlantic · French Guiana
  37. NAVAREA IV 348/212021-04-28 → 2021-05-05
    NAVAREA IV mobile offshore drilling units positions at 281141Z apr: a. the 150 29-14.4N 091-22.6W
  38. NAVAREA IV 340/212021-04-26 → 2021-05-09
    Underwater operations in progress until 08 may by M/V it integrity along trackline joining 26-19.82N…
    Straits of Florida · Gulf of Mexico · Florida · Mexico
  39. NAVAREA IV 324/212021-04-21 → 2021-04-28
    NAVAREA IV mobile offshore drilling units positions at 211507Z apr: a. the 150 29-14.4N 091-22.6W
  40. NAVAREA IV 319/212021-04-20 → 2021-07-11
    Survey operations 24 apr thru 10 jul by M/V bourbon sapphire in: a. 07-27.0N 055-57.5W
    Western North Atlantic · Suriname
  41. HYDROLANT 1022/212021-04-14 → 2021-04-21
    Survey operations 18 thru 20 apr by M/V fugro meridian along trackline joining 46-00N 011-42W, 45-28N…
    Eastern North Atlantic
  42. NAVAREA IV 304/212021-04-14 → 2021-04-21
    NAVAREA IV mobile offshore drilling units positions at 142200Z apr: a. the 150 29-14.4N 091-22.6W
  43. NAVAREA IV 290/212021-04-07 → 2021-04-14
    To report a mobile offshore drilling unit as per imo resolution A.1023(26), paragraph 11.5.1, contact…
    NAVAREA IV Mobile Offshore Drilling Units
  44. HYDROLANT 942/212021-04-06 → 2021-05-31
    Survey operations 12 apr thru 30 may by M/V meteor in area bound by 05-59.4N 053-46.2W, 06-54.6N 052-44.4W,…
    Western North Atlantic · French Guiana
  45. NAVAREA IV 281/212021-04-02 → 2021-04-20
    Survey operations in progress until 19 apr by M/V thomas g thc along trackline joining 06-52.2N 053-18.6W,…
    Western South Atlantic · French Guiana
  46. HYDROLANT 891/212021-04-01 → 2021-04-06
    Survey operations 030001Z to 052359Z apr in area bound by 47-00N 007-20W, 47-00N 005-40W, 46-20N 005-40W,…
    Eastern North Atlantic · Celtic Sea · Bay of Biscay · France
  47. NAVAREA IV 275/212021-04-01 → 2021-04-07
    To report a mobile offshore drilling unit as per imo resolution A.1023(26), paragraph 11.5.1, contact…
    NAVAREA IV Mobile Offshore Drilling Units
  48. NAVAREA IV 274/212021-04-01 → 2021-04-26
    Underwater operations in progress until 30 apr by M/V it integrity along trackline joining 26-19.82N…
    Straits of Florida · Gulf of Mexico · Florida · Mexico
  49. HYDROLANT 858/212021-03-29 → 2021-04-22
    Survey operations 30 mar thru 21 apr by M/V hesperides towing 1000 meter long cable in areas bound by: a.…
    Eastern North Atlantic · Canary Islands
  50. NAVAREA IV 261/212021-03-25 → 2021-11-01
    Survey operations 28 mar thru 31 oct by M/V fugro brasilis in area bound by 07-55N 055-50W, 07-00N 055-50W,…
    Western North Atlantic · Suriname

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 6 · seahazards