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 · 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 421/202020-05-21 → 2020-05-24
    Survey operations in progress until further notice by M/V layla in areas bound by: a. 38-21N 072-24W, 38-14N…
    Western North Atlantic
  2. HYDROLANT 1519/202020-05-03 → 2020-05-15
    Underwater operations in progress until 050100Z jun in area bound by 56-38N 006-48W, 59-06N 006-48W, 59-06N…
    Eastern North Atlantic · Sea of the Hebrides · Little Minch · Scotland
  3. NAVAREA IV 335/202020-04-20 → 2020-07-01
    Survey operations in progress until 30 jun by M/V normand frontier 08-04.63N 056-43.17W, 07-55.63N…
    Western North Atlantic · Guyana
  4. HYDROLANT 1328/202020-04-14 → 2020-06-07
    Survey operations in progress until 31 jul by M/V bgp prospector towing ten 8000 meter long cables in area…
    Eastern North Atlantic · The Gambia
  5. NAVAREA IV 296/202020-04-02 → 2020-05-27
    Survey operations in progress until 26 may by M/V fugro equator in: a. 10-07.22N 060-03.97W
    Western North Atlantic · Trinidad
  6. HYDROLANT 1193/202020-04-02 → 2020-04-14
    Survey operations in progress until 20 apr by M/V bgp prospector towing 12 8000 meter long cables in area…
    Eastern North Atlantic · Senegal
  7. NAVAREA IV 294/202020-04-01 → 2020-04-02
    Survey operations in progress until 26 may by M/V fugro equator in: a. 10-07.22N 060-03.97W
    Western North Atlantic · Trinidad
  8. NAVAREA IV 242/202020-03-16 → 2020-09-04
    Underwater operations in progress until 31 dec by M/V seacosco murray in area bound by 07-57.09N 056-41.36W,…
    Western North Atlantic
  9. NAVAREA IV 215/202020-03-06 → 2020-05-01
    Survey operations in progress until 30 apr by M/V ridley thomas and M/V rt 2 in area bound by 10-11.62N…
    Western North Atlantic · Guyana
  10. NAVAREA IV 212/202020-03-05 → 2020-06-01
    Survey operations 06 mar thru 31 may by M/V markab in area bound by 06-51.71N 058-15.44W, 06-35.54N…
    Western North Atlantic · Guyana
  11. HYDROLANT 868/202020-03-05 → 2020-04-08
    Underwater operations in progress until 07 apr in area bound by 58-19N 003-24W, 59-25N 003-24W, 59-25N…
    Eastern North Atlantic · North Minch · Scotland
  12. NAVAREA IV 192/202020-02-28 → 2020-06-16
    Survey operations 02 mar thru 15 jun by M/V mma valour in area bound by 08-02.64N 057-10.00W, 08-00.56N…
    Western North Atlantic · Guyana
  13. NAVAREA IV 191/202020-02-28 → 2021-01-01
    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 · Guyana
  14. NAVAREA IV 190/202020-02-28 → 2021-01-01
    Underwater operations in progress until 31 dec by M/V saipem FDS2 in area bound by 08-05.94N 056-56.97W,…
    Western North Atlantic · Guyana
  15. NAVAREA IV 169/202020-02-17 → 2021-01-01
    Underwater operations in progress until 31 dec by M/V pacific legend in area bound by 08-05.94N 056-56.97W,…
    Western North Atlantic · Guyana
  16. NAVAREA IV 168/202020-02-17 → 2020-07-01
    Underwater operations in progress until 30 jun by M/V kacey in area bound by 08-01.50N 057-00.37W, 08-01.50N…
    Western North Atlantic · Guyana
  17. NAVAREA IV 167/202020-02-17 → 2020-07-01
    Underwater operations in progress until 30 jun by M/V normand installer in area bound by 08-01.50N…
    Western North Atlantic
  18. HYDROLANT 561/202020-02-16 → 2020-02-27
    Survey operations in progress until further notice by M/V sw amundsen towing 12 8000 meter long cables in…
    Eastern North Atlantic · Senegal
  19. HYDROLANT 556/202020-02-16 → 2020-04-01
    Survey operations in progress until 31 mar by M/V bgp prospector towing 12 8000 meter long cables in area…
    Eastern North Atlantic · Senegal
  20. NAVAREA IV 159/202020-02-15 → 2020-03-05
    Survey operations 17 feb thru 04 mar by M/V ridley thomas and M/V RT2 along trackline joining 05-53.89N…
    Western North Atlantic · Suriname
  21. NAVAREA IV 143/202020-02-12 → 2021-01-01
    Survey operations in progress until 31 dec by M/V skandi neptune in area bound by 08-05.94N 056-56.97W,…
    Western North Atlantic · Guyana
  22. HYDROLANT 457/202020-02-09 → 2020-02-24
    Spain
    Eastern North Atlantic · Gulf of Cadiz · Strait of Gibraltar · Alboran Sea
  23. NAVAREA IV 131/202020-02-07 → 2021-01-01
    Survey operations in progress until 31 dec by M/V bourbon sapphire in area bound by 08-11.04N 056-46.11W,…
    Western North Atlantic · Guyana
  24. NAVAREA IV 117/202020-02-04 → 2020-07-01
    Survey operations in progress until 30 jun by M/V guyana hero in area bound by 08-35N 057-30W, 08-35N…
    Western North Atlantic · Guyana
  25. NAVAREA IV 110/202020-02-01 → 2020-03-24
    Survey operations in progress until further notice by M/V ramform tethys, M/V ocean fortune and M/V sea…
    Western North Atlantic · Guyana
  26. NAVAREA IV 107/202020-01-31 → 2020-02-01
    Survey operations in progress until further notice by M/V ocean fortune and M/V sea service in area bound by…
    Western North Atlantic · Guyana
  27. NAVAREA IV 94/202020-01-28 → 2020-01-31
    Survey operations in progress until 30 jun by M/V ramform tethys, M/V ocean fortune and M/V sea service in…
    Western North Atlantic · Guyana
  28. NAVAREA IV 71/202020-01-21 → 2020-02-04
    Guyana 1. survey operations in progress until 30 jun by M/V aht seaways 20, M/V aht bourbon liberty 308, in…
    Western North Atlantic
  29. NAVAREA IV 70/202020-01-21 → 2020-04-20
    Survey operations in progress until 30 apr 20 by S/V normand frontier 08-04.63N 056-43.17W, 07-55.63N…
    Western North Atlantic · Guyana
  30. HYDROLANT 159/202020-01-16 → 2020-02-15
    Survey operations in progress until further notice by M/V sw amundsen towing 12 8000 meter long cables in…
    Eastern North Atlantic · Senegal
  31. HYDROLANT 4024/192019-12-31 → 2020-01-09
    Underwater operations 03 thru 08 jan 20 by M/V beautemps beaupre in area bound by 47-40N 009-00W, 47-20N…
    Eastern North Atlantic · Celtic Sea
  32. NAVAREA IV 1118/192019-12-27 → 2020-01-31
    Survey operations in progress until 30 jun 20 by M/V ramform tethys, M/V ocean fortune, M/V delta monarch,…
    Western North Atlantic · Guyana
  33. NAVAREA IV 1109/192019-12-24 → 2020-01-01
    Survey operations in progress until 31 dec by M/V seabed constructor in area bound by 08-03.99N 056-43.10W,…
    Western North Atlantic · Guyana
  34. NAVAREA IV 1088/192019-12-17 → 2019-12-26
    Survey operations 18 dec thru 31 jan 20 by M/V havila subsea with submersible: a. in area bound by 10-05.99N…
    Western North Atlantic · Trinidad
  35. NAVAREA IV 1087/192019-12-17 → 2019-12-20
    Underwater operations 21 thru 31 dec by M/V stena carron in area bound by 07-59.047N 056-42.058W, 07-59.047N…
    Western North Atlantic · Guyana
  36. NAVAREA IV 1059/192019-12-09 → 2020-01-15
    Survey operations in progress until 14 jan 20 by M/V delta cardinal in areas bound by: a. 10-06.96N…
    Western North Atlantic · Trinidad
  37. HYDROLANT 3763/192019-12-08 → 2020-02-17
    Survey operations in progress until further notice by M/V oceanic vega towing ten 8100 meter long cables in…
    Eastern North Atlantic · Mauritania
  38. HYDROLANT 3750/192019-12-06 → 2019-12-16
    Underwater operations 070001Z dec until further notice by c/s peter faber in vicinity 15-55N 018-02W
    Eastern North Atlantic
  39. HYDROLANT 3723/192019-12-04 → 2019-12-23
    Survey operations 08 thru 22 dec by M/V angeles alvarino in area bound by 37-00N 007-30W, 35-30N 007-30W,…
    Gulf of Cadiz · Strait of Gibraltar · Spain
  40. NAVAREA IV 1047/192019-12-03 → 2019-12-27
    Survey operations in progress until 31 dec by M/V ramform tethys, M/V ocean fortune, M/V delta monarch, M/V…
    Western North Atlantic · Guyana
  41. NAVAREA IV 1045/192019-12-02 → 2019-12-03
    Survey operations in progress until further notice by M/V ramform titan towing 14 five mile long cables in…
    Western North Atlantic · Guyana
  42. NAVAREA IV 1040/192019-12-01 → 2019-12-02
    Survey operations in progress until further notice by M/V ramform titan towing 14 five mile long cables in…
    Western North Atlantic · Guyana
  43. HYDROLANT 3661/192019-11-29 → 2020-02-16
    Survey operations in progress until 20 feb 20 by M/V bgp prospector towing 12 8000 meter long cables in area…
    Eastern North Atlantic · Senegal
  44. HYDROLANT 3623/192019-11-26 → 2019-12-08
    Survey operations in progress until further notice by M/V oceanic vega towing ten 8100 meter long cables in…
    Eastern North Atlantic · Mauritania
  45. HYDROLANT 3616/192019-11-25 → 2019-11-26
    Survey operations in progress until further notice by M/V oceanic vega towing ten 8100 meter long cables in…
    Eastern North Atlantic · Mauritania
  46. NAVAREA IV 1018/192019-11-22 → 2020-01-01
    Underwater operations in progress until 31 dec by M/V aht seaways 20 in area bound by 07-35N 056-30W, 07-35N…
    Western North Atlantic · Guyana
  47. NAVAREA IV 1006/192019-11-17 → 2019-11-18
    Survey operations 22 nov thru 27 nov by M/V horizon geobay in 10-10.53N 060-45.96W
    Western North Atlantic · Trinidad
  48. HYDROLANT 3514/192019-11-15 → 2019-11-26
    Survey operations in progress until 15 feb 20 by M/V oceanic vega towing ten 8100 meter long cables in area…
    Eastern North Atlantic · Mauritania
  49. NAVAREA IV 960/192019-11-02 → 2020-01-28
    Survey operation in progress until further notice by M/V ramform tethys towing 14 8100 meter long cables in…
    Western North Atlantic · Guyana
  50. NAVAREA IV 959/192019-11-02 → 2020-01-01
    Underwater operations in progress until 31 dec in area bound by 07-36.32N 057-16.08W, 07-36.28N 057-15.96W,…
    Western North Atlantic · Guyana

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 8 · seahazards