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 · 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 · 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 · 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 3339/192019-10-31 → 2019-11-21
    Survey operations 04 thru 20 nov by M/V angeles alvarino in area bound by 31-00N 018-00W, 24-00N 018-00W,…
    Eastern North Atlantic · Canary Islands
  2. NAVAREA IV 952/192019-10-30 → 2019-12-18
    Survey operations in progress until 17 dec by M/V havila subsea with submersible: a. in area bound by…
    Western North Atlantic · Trinidad
  3. NAVAREA IV 929/192019-10-21 → 2019-11-02
    Underwater operations in progress until 30 nov in area bound by 07-36.32N 057-16.08W, 07-36.28N 057-15.96W,…
    Western North Atlantic · Guyana
  4. NAVAREA IV 914/192019-10-16 → 2019-11-03
    Survey operation in progress until 31 dec by M/V thor magni, M/V sea horse 2 and M/V miss megan in area…
    Western North Atlantic · Guyana
  5. NAVAREA IV 909/192019-10-15 → 2019-11-03
    Survey operations in progress until further notice by r/v ramform titan towing 8100 meter long cable in area…
    Western North Atlantic · Guyana
  6. NAVAREA IV 907/192019-10-14 → 2019-12-01
    Survey operations in progress until 31 nov by M/V sea service in area bound by 07-53.03N 057-07.07W,…
    Western North Atlantic · Guyana
  7. HYDROLANT 3131/192019-10-14 → 2019-10-21
    Survey operations in progress until 202359Z oct by M/V sarmiento de gamboa towing 600 meter long cable in…
    Eastern North Atlantic · Gulf of Cadiz · Portugal
  8. HYDROLANT 3121/192019-10-13 → 2019-10-14
    Survey operations in progress until further notice by M/V sarmiento de gamboa towing 600 meter cables in…
    Eastern North Atlantic · Portugal
  9. NAVAREA IV 903/192019-10-11 → 2019-10-15
    Survey operation in progress until 31 dec by M/V ramform titan in area bound by a. 07-24.0N 056-35.0W,…
    Western North Atlantic · Guyana
  10. NAVAREA IV 898/192019-10-10 → 2019-10-25
    Survey operations in progress until 31 oct by M/V harrier explorer in area bound by 08-30.77N 056-05.08W,…
    Western North Atlantic
  11. NAVAREA IV 897/192019-10-10 → 2019-11-02
    Survey operation in progress until 31 dec by M/V ramform tethys, M/V delta monarch and M/V ocean fortune in…
    Western North Atlantic · Guyana
  12. NAVAREA IV 871/192019-10-07 → 2019-10-11
    Survey operations 110001Z until further notice by M/V ramform titan towing 8300 meter long cables in area…
    Western North Atlantic · Guyana
  13. NAVAREA IV 863/192019-10-04 → 2019-10-10
    Survey operations in progress until further notice by M/V ramform tethys towing 14 8100 meter long cables in…
    Western North Atlantic · Guyana
  14. NAVAREA IV 859/192019-10-03 → 2019-12-01
    Survey operations in progress until 30 nov by M/V gh navigator in area bound by 07-36.32N 057-16.08W,…
    Western North Atlantic · Guyana
  15. NAVAREA IV 856/192019-10-02 → 2019-10-05
    Survey operations 03 and 04 oct by M/V stati in: a. 06-10.41N 055-01.55W
    Western North Atlantic · Suriname
  16. HYDROLANT 2956/192019-09-27 → 2019-10-13
    Survey operations 01 thru 20 oct by M/V sarmiento de gamboa in area bound by 38-00N 015-00W, 34-00N 015-00W,…
    Eastern North Atlantic · Gulf of Cadiz · Portugal
  17. HYDROLANT 2955/192019-09-27 → 2019-10-16
    Survey operations 01 thru 15 oct by M/V angeles alvarino in area bound by 37-00N 007-30W, 35-30N 007-30W,…
    Eastern North Atlantic · Gulf of Cadiz · Strait of Gibraltar · Spain
  18. HYDROLANT 2817/192019-09-16 → 2019-11-25
    Survey operations in progress until 30 nov by M/V bgp prospector towing 12 8000 meter long cables in area…
    Eastern North Atlantic · The Gambia
  19. NAVAREA IV 815/192019-09-13 → 2019-10-01
    Underwater operations in progress thru 30 sep by M/V sea service in areas bound by: a. 10-33.00N 059-17.49W,…
    Western North Atlantic · Eastern Caribbean Sea · Tobago
  20. NAVAREA IV 811/192019-09-13 → 2019-09-22
    Survey operations 14 thru 21 sep by M/V proteus in 06-28.05N 052-01.31W
    Western North Atlantic · French Guiana
  21. NAVAREA IV 804/192019-09-11 → 2020-10-23
    Underwater operations in progress until further notice by M/V liza destiny in area bound by 08-01.5N…
    Western North Atlantic
  22. NAVAREA IV 803/192019-09-11 → 2020-01-01
    Survey operation in progress until 31 dec by M/V russell adams
    Western North Atlantic
  23. NAVAREA IV 789/192019-09-08 → 2019-09-13
    Survey operations 13 thru 19 sep by M/V proteus in 06-28.05N 052-01.31W
    Western North Atlantic · French Guiana
  24. HYDROLANT 2689/192019-09-03 → 2019-12-01
    Survey operations in progress until 30 nov by M/V ocean mermaid and M/V polar marquis in area bound by…
    Eastern North Atlantic · Senegal
  25. HYDROLANT 2688/192019-09-03 → 2019-10-05
    Survey operations in progress until further notice by M/V havila subsea with submersible in area bound by…
    Eastern North Atlantic · Scotland
  26. HYDROLANT 2682/192019-09-02 → 2019-09-03
    Survey operations in progress until 30 nov by M/V ocean mermaid in area bound by 14-13.1N 017-56.3W,…
    Eastern North Atlantic · Senegal
  27. NAVAREA IV 757/192019-08-30 → 2020-01-01
    Survey operation in progress until 31 dec by M/V seacosco amazon
    Western North Atlantic
  28. NAVAREA IV 756/192019-08-30 → 2020-01-01
    Underwater operations in progress until 31 dec by M/V saipem constellation in area bound by 08-08.08N…
    Western North Atlantic · Guyana
  29. NAVAREA IV 747/192019-08-27 → 2019-12-01
    Underwater operations 28 aug to 30 nov by M/V havila harmony with submersible in: a. 10-04.69N 060-11.69W
    Western North Atlantic · Trinidad
  30. NAVAREA IV 744/192019-08-27 → 2019-10-10
    Survey operations in progress until 30 oct by M/V harrier explorer in area bound by 08-16.77N 056-07.72W,…
    Western North Atlantic
  31. NAVAREA IV 741/192019-08-26 → 2019-09-27
    Survey operations in progress until 26 sep by M/V horizon geobay in area bound by 07-08.1N 056-03.3W,…
    Western North Atlantic · Suriname
  32. HYDROLANT 2530/192019-08-19 → 2019-08-30
    Survey operations in progress until 300001Z aug by M/V ramon margalef in vicinity of 43-00N 016-00W
    Eastern North Atlantic
  33. NAVAREA IV 716/192019-08-16 → 2019-10-04
    Survey operations in progress until further notice by M/V ramform tethys towing 14 8100 meter long cables in…
    Western North Atlantic
  34. NAVAREA IV 702/192019-08-09 → 2019-08-13
    Survey operation in progress until 12 aug by M/V markman along trackline joining 10-10.4N 060-39.8W,…
    Western North Atlantic · Trinidad
  35. NAVAREA IV 696/192019-08-09 → 2019-08-26
    Survey operations 13 aug thru 08 sep by M/V horizon geobay in area bound by 07-08.1N 056-03.3W, 07-08.1N…
    Western North Atlantic · Suriname
  36. NAVAREA IV 681/192019-08-04 → 2019-09-18
    Survey operations in progress until further notice by M/V ramform atlas towing 14 9000 meter long cables in…
    Western North Atlantic
  37. HYDROLANT 2366/192019-08-02 → 2019-08-11
    Survey operations in progress until 10 aug by M/V nhisirius in area bound by 01-21.82N 049-21.70W, 01-21.82N…
    Western North Atlantic · Brazil-north Coast
  38. HYDROLANT 2338/192019-07-30 → 2019-08-03
    Survey operations in progress 31 jul thru 02 aug by M/V nhisirius in area bound by 01-23.42N 049-24.08W,…
    Western North Atlantic · Brazil-north Coast
  39. NAVAREA IV 661/192019-07-28 → 2019-10-01
    Survey operations 31 jul thru 30 sep by by M/V harrier explorer and M/V shannon in area bound by 08-30.000N…
    Western North Atlantic
  40. HYDROLANT 2286/192019-07-26 → 2019-09-02
    Survey operations in progress until 31 oct by M/V ocean mermaid in area bound by 14-13.1N 017-56.3W,…
    Eastern North Atlantic · Senegal
  41. HYDROLANT 2278/192019-07-25 → 2019-07-31
    Survey operations 26 jul until further notice by M/V sarmiento de gamboa area bound by 42-00N 012-00W,…
    Eastern North Atlantic
  42. NAVAREA IV 641/192019-07-21 → 2019-08-01
    Underwater operations 23 thru 31 jul by M/V dino chouest with submersible in area bound by 31-40N 075-05W,…
    Western North Atlantic
  43. HYDROLANT 2217/192019-07-21 → 2019-09-08
    Survey operations in progress until 07 sep by M/V bgp prospector towing 12 8000 meter long cables in…
    Eastern North Atlantic · Guinea
  44. HYDROLANT 2185/192019-07-19 → 2019-08-23
    Survey operations in progress until 02 sep by S/V oceanic vega towing 12 9000 meter long cables in area…
    Eastern North Atlantic · Norwegian Sea · Shetland Islands
  45. NAVAREA IV 635/192019-07-19 → 2019-07-21
    Underwater operations 23 thru 31 jul by M/V dino chouest with submersible in area bound by 31-40N 075-05W,…
    Western North Atlantic
  46. HYDROLANT 2102/192019-07-12 → 2019-09-03
    Survey operations 13 jul thru 31 oct by M/V polar marquis and M/V ocean mermaid in vicinity 13-59N 017-57W
    Eastern North Atlantic · Senegal
  47. NAVAREA IV 604/192019-07-09 → 2019-07-28
    Survey operation in progress until 30 sep by M/V harrier explorer in area bound by 09-44.47N 053-56.72W,…
    Western North Atlantic
  48. HYDROLANT 2069/192019-07-09 → 2019-08-05
    Survey operations 10 jul thru 04 aug by M/V angeles alvarino in area bound by 35-49.3N 006-48.3W, 35-46.5N…
    Eastern North Atlantic · Spain
  49. HYDROLANT 2012/192019-07-04 → 2019-07-08
    Underwater operations in progress until 07 jul by M/V sarmiento de gamboa in area bound by 39-32N 030-10W,…
    North Atlantic · Azores
  50. NAVAREA IV 575/192019-07-02 → 2019-08-27
    Survey operations in progress until 15 sep by M/V harrier explorer towing 12100 meter cable in area bound by…
    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 9 · seahazards