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 · 962 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 · 234 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. NAVAREA IV 526/152015-07-01 → 2015-07-04
    Hydrographic survey by M/V thalassa: a. 01 jul along trackline between 56-24N 034-01W and 55-48N 034-49W
    North Atlantic
  2. NAVAREA IV 523/152015-06-30 → 2015-07-01
    Hydrographic survey by M/V thalassa: a. 30 jun along trackline between 56-51N 033-29W and 56-24N 034-01W
    North Atlantic
  3. NAVAREA IV 521/152015-06-29 → 2015-06-30
    Hydrographic survey by M/V thalassa: a. 29 jun along trackline between 58-32N 031-25W and 56-51N 033-29W
    North Atlantic
  4. NAVAREA IV 518/152015-06-28 → 2015-06-30
    Hydrographic survey by M/V thalassa: a. 28 jun along trackline between 58-59N 032-10W and 58-46N 030-38W
    North Atlantic
  5. NAVAREA IV 511/152015-06-26 → 2015-06-29
    Hydrographic survey by M/V thalassa: a. 26 jun along trackline between 60-54.2N 028-07.1W and 58-51.0N…
    North Atlantic
  6. NAVAREA IV 506/152015-06-25 → 2015-06-28
    Hydrographic survey by M/V thalassa: a. 25 jun along trackline between 62-07.17N 026-13.00W and 58-51.00N…
    North Atlantic
  7. NAVAREA IV 503/152015-06-24 → 2015-06-25
    Hydrographic survey by M/V thalassa: a. 24 jun along trackline between 63-25.17N 023-55.22W and 58-51.00N…
    North Atlantic
  8. NAVAREA IV 500/152015-06-23 → 2015-06-24
    Hydrographic survey by M/V thalassa: a. 23 jun along trackline joining 63-00.00N 027-40.00W, 63-00.00N…
    North Atlantic
  9. NAVAREA IV 497/152015-06-22 → 2015-06-23
    Hydrographic survey by M/V thalassa: a. 22 jun along trackline between 60-18.00N 021-00.00W and 63-01.00N…
    North Atlantic
  10. NAVAREA IV 493/152015-06-21 → 2015-06-22
    Hydrographic survey by M/V thalassa: a. 21 jun along trackline between 61-55N 021-00W and 63-01N 024-37W
    North Atlantic
  11. NAVAREA IV 486/152015-06-19 → 2015-06-22
    Hydrographic survey by M/V thalassa: a. 19 and 20 jun vicinity 60-18N 021-00W
    North Atlantic
  12. NAVAREA IV 481/152015-06-18 → 2015-06-21
    Hydrographic survey by M/V thalassa: a. 18 jun along trackline between 58-47N 030-39W and 56-56N 027-18W
    North Atlantic
  13. NAVAREA IV 473/152015-06-17 → 2015-06-18
    Hydrographic survey by M/V thalassa: a. 17 jun vicinity of 58-50N 031-14W
    North Atlantic
  14. NAVAREA IV 471/152015-06-16 → 2015-06-17
    Hydrographic survey by M/V thalassa: a. 16 jun along trackline between 59-20N 036-25W and 58-50N 031-14W
    North Atlantic
  15. NAVAREA IV 469/152015-06-15 → 2015-06-16
    Scientific mooring, at depth 55 meters, established in 44-26.32N 063-31.24W
    Western North Atlantic · Nova Scotia
  16. NAVAREA IV 467/152015-06-15 → 2015-06-16
    Hydrographic survey by M/V thalassa: a. 15 jun along trackline between 59-08-04N 036-33-04W and 59-20-00N…
    North Atlantic
  17. HYDROLANT 1461/152015-06-15 → 2015-06-27
    Underwater operations in progress until further notice by M/V viking neptun in 60-56N 002-14W
    Eastern North Atlantic · Shetland Islands
  18. NAVAREA IV 463/152015-06-14 → 2015-06-15
    Hydrographic survey by M/V thalassa: a. 14 jun along trackline between 56-46N 038-15W and 59-22N 036-24W
    North Atlantic
  19. NAVAREA IV 461/152015-06-14 → 2015-06-14
    Hydrographic survey by M/V thalassa: a. 14 jun along trackline between 56-46N 038-15W and 59-22N 036-24W
    North Atlantic
  20. HYDROLANT 1445/152015-06-13 → 2015-06-20
    Survey operations 140001Z to 192359Z jun by M/V ramon margalef in area bound by 36-42.6N 006-32.4W, 36-24.5N…
    Eastern North Atlantic · Gulf of Cadiz
  21. NAVAREA IV 443/152015-06-09 → 2017-07-11
    Scientific moorings established until 10 jul 17 in: a. 56-43.96N 033-43.02W
    North Atlantic
  22. HYDROLANT 1385/152015-06-06 → 2015-06-10
    Hydrographic survey in progress until 09 jun by M/V thalassa along trackline joining 48-25.0N 005-46.2W,…
    Eastern North Atlantic
  23. NAVAREA IV 432/152015-06-05 → 2015-09-13
    Scientific mooring, at depth 173 meters, established in 43-36-31N 062-52-06W
    Western North Atlantic
  24. HYDROLANT 1302/152015-05-28 → 2015-06-02
    Oceanographic operations in progress until 012359Z jun by M/V garcia del cid within six miles of 28-33.8N…
    Eastern North Atlantic · Canary Islands
  25. HYDROLANT 1188/152015-05-14 → 2015-05-28
    Oceanographic operations in progress until 27 may by M/V belgica along trackline joining 47-59N 006-13W,…
    Eastern North Atlantic · Bay of Biscay
  26. HYDROLANT 982/152015-04-24 → 2015-05-06
    Hydrographic survey in progress until 05 may by M/V jean charcot in area bound by 05-26N 050-25W, 05-03N…
    Brazil-north Coast
  27. HYDROLANT 834/152015-04-09 → 2015-04-21
    Survey operations 1800Z to 0200Z commencing daily by M/V walther herwig III within five miles of: a.…
    Eastern North Atlantic
  28. HYDROLANT 776/152015-04-03 → 2015-04-18
    Hydrographic survey in progress until 17 apr in area bound by 05-26N 050-25W, 05-03N 050-26W, 04-47N…
    Brazil-north Coast
  29. NAVAREA IV 244/152015-04-02 → 2015-04-26
    Trinidad and tobago
    Western North Atlantic · Eastern Caribbean Sea
  30. NAVAREA IV 243/152015-04-02 → 2015-04-07
    Trinidad and tobago
    Western North Atlantic
  31. HYDROLANT 740/152015-03-29 → 2015-04-02
    Survey operations in progress until 020800Z apr by M/V investigator one in 15-34.02N 017-36.48W
    Eastern North Atlantic · Senegal
  32. HYDROLANT 702/152015-03-24 → 2015-03-24
    Underwater operations in progress until 241200Z mar by M/V poseidon in area bound by 36-45N 007-05W, 37-00N…
    Eastern North Atlantic · Gulf of Cadiz · Spain · Portugal
  33. HYDROLANT 632/152015-03-15 → 2015-03-24
    Underwater operations in progress by M/V poseidon: a. until 161800Z mar in area between 36-45N 37-05N and…
    Eastern North Atlantic · Gulf of Cadiz · Spain · Portugal
  34. NAVAREA IV 193/152015-03-13 → 2015-09-01
    Underwater operations in progress until 31 aug by M/V deepwater champion vicinity 08-04-33N 056-57-10W
    Western North Atlantic · Guyana
  35. HYDROLANT 389/152015-02-15 → 2015-02-25
    Underwater operations 170001Z to 242359Z feb by M/V thalassa in area bounded by 48-00N 008-20W, 48-00N…
    Eastern North Atlantic · Celtic Sea
  36. HYDROLANT 357/152015-02-12 → 2015-03-31
    Hydrographic survey in progress until 30 mar by M/V beautemps beaupre in areas bound by: a. 20-55.0N…
    Eastern North Atlantic · Mauritania
  37. NAVAREA IV 95/152015-02-02 → 2015-07-05
    Bottom scientific moorings, extending 1000 to 4000 meters above sea floor, established until 04 jul in: a.…
    Western North Atlantic · Eastern Caribbean Sea
  38. HYDROLANT 194/152015-01-23 → 2015-03-11
    Underwater operations in progress until further notice by M/V edda flora with submersible along trackline…
    Eastern North Atlantic · Strait of Gibraltar
  39. NAVAREA IV 57/152015-01-20 → 2015-02-08
    Trinidad and tobago
    Western North Atlantic
  40. HYDROLANT 2747/142014-11-14 → 2015-01-28
    Underwater operations in progress until further notice by M/V rowan renaissance within one mile of 28-33.55N…
    Eastern North Atlantic · Canary Islands
  41. NAVAREA IV 925/142014-10-30 → 2014-11-21
    Survey operations in progress until 20 nov by M/V boa galatea towing equipment in area bound by 48-36-53N…
    Western North Atlantic
  42. HYDROLANT 2353/142014-09-29 → 2014-10-08
    Underwater operations by M/V angeles alvarino 010001Z to 072359Z oct in area bound by 36-45N 006-30W, 36-09N…
    Eastern North Atlantic · Gulf of Cadiz · Strait of Gibraltar
  43. HYDROLANT 2304/142014-09-24 → 2014-09-30
    Underwater operations 250001Z thru 292359Z sep by M/V james cook in area bound by 45-24.2N 013-52.0W,…
    Eastern North Atlantic
  44. NAVAREA IV 736/142014-09-10 → 2014-10-01
    Survey operations 12 thru 30 sep by M/V boa galatea towing equipment in area bound by 47-58-29N 046-01-03W,…
    Western North Atlantic
  45. NAVAREA IV 731/142014-09-08 → 2014-09-13
    Survey operations 09 thru 12 sep by M/V boa galatea towing equipment along trackline between 47-55-58N…
    Western North Atlantic
  46. NAVAREA IV 648/142014-08-15 → 2014-09-08
    Survey operations in progress until further notice by M/V boa galatea towing equipment in area bound by…
    Western North Atlantic
  47. NAVAREA IV 635/142014-08-11 → 2014-08-15
    Survey operations in progress until further notice by M/V boa galatea towing equipment in area bound by…
    Western North Atlantic
  48. NAVAREA IV 605/142014-08-01 → 2014-08-11
    Survey operations in progress until further notice by M/V boa galatea towing equipment in area bound by…
    Western North Atlantic
  49. NAVAREA IV 543/142014-07-17 → 2014-07-24
    Geophysical survey in progress until 23 jul by M/V sea surveyor in area bound by 06-59N 056-43W, 06-58N…
    Western North Atlantic · Guyana
  50. HYDROLANT 1701/142014-07-13 → 2014-07-26
    Oceanographic operations 14 thru 25 jul by M/V corwith cramer with submersible along trackline joining…
    Eastern North Atlantic · Bay of Biscay

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 15 · seahazards