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. HYDROLANT 2498/162016-09-26 → 2016-10-02
    Hydrographic survey in progress until 01 oct by M/V sarmiento with submersible in area bound by 36-56N…
    Eastern North Atlantic · Portugal
  2. NAVAREA IV 793/162016-09-15 → 2016-11-20
    Underwater operations 19 sep thru 19 nov by M/V bibby sapphire: a. in area bound by 09-58.28N 060-32.41W,…
    Western North Atlantic · Trinidad
  3. HYDROLANT 2390/162016-09-14 → 2016-09-17
    Survey operations in progress until further notice by M/V autonaut jura towing 25 meter long cable along…
    Eastern North Atlantic · Shetland Islands
  4. HYDROLANT 2098/162016-08-17 → 2016-08-19
    Underwater operations 180001Z to 190001Z aug by M/V thalia within three miles of 47-05N 009-07W
    Eastern North Atlantic
  5. HYDROLANT 2068/162016-08-15 → 2016-08-26
    Oceanographic operations in progress until 25 aug by M/V ramon margalef along trackline between 43-00N…
    Eastern North Atlantic · Spain
  6. HYDROLANT 1974/162016-08-04 → 2016-08-15
    Oceanographic operations 050001Z to 142300Z aug by M/V ramon margalef along trackline between 42-08.52N…
    Eastern North Atlantic · Spain
  7. HYDROLANT 1966/162016-08-04 → 2016-08-05
    Oceanographic operations in progress until 042300Z aug by M/V skoven along trackline between 47-13.25N…
    Eastern North Atlantic · Celtic Sea
  8. HYDROLANT 1957/162016-08-03 → 2016-08-04
    Oceanographic operations in progress until further notice by M/V skoven along trackline between 46-18.28N…
    Eastern North Atlantic · Celtic Sea
  9. HYDROLANT 1944/162016-08-01 → 2016-08-03
    Oceanographic operations in progress until further notice by M/V skoven along tracklines joining: a.…
    Eastern North Atlantic · Celtic Sea
  10. NAVAREA IV 565/162016-07-14 → 2016-09-01
    Underwater operations 18 jul thru 31 aug by M/V island intervention, M/V wellservicer, M/V jack edwards and…
    Western North Atlantic · Trinidad
  11. NAVAREA IV 512/162016-06-27 → 2016-07-16
    Trinidad and tobago
    Western North Atlantic
  12. NAVAREA IV 486/162016-06-20 → 2016-07-24
    Survey operations 23 jun thru 23 jul by M/V delta skipper in area bound by 10-22.09N 060-36.46W, 10-03.58N…
    Western North Atlantic · Trinidad
  13. NAVAREA IV 480/162016-06-18 → 2016-07-29
    Portugal to greenland
    North Atlantic
  14. HYDROLANT 1508/162016-06-17 → 2016-06-26
    Oceanographic operations in progress until 262259Z jun by M/V angele alvarino towing equipment along…
    Eastern North Atlantic · Gulf of Cadiz · Portugal To Morocco
  15. HYDROLANT 1455/162016-06-12 → 2016-06-30
    Oceanographic equipment, at depth 170 meters, established until 02 jul in: a. 33-44.550N 014-24.147W
    Eastern North Atlantic
  16. NAVAREA IV 438/162016-06-06 → 2016-06-24
    Underwater operations 10 thru 23 jun by M/V thalassa within four miles of: a. 37-04.85N 031-55.18W
    North Atlantic
  17. HYDROLANT 1381/162016-06-06 → 2016-06-24
    Underwater operations 10 thru 23 jun by M/V thalassa within four miles of: a. 37-04.85N 031-55.18W
    North Atlantic
  18. HYDROLANT 1047/162016-05-02 → 2016-05-26
    Scientific moorings, at depth 50 meters, established in: a. 36-31.137N 011-34.174W
    Eastern North Atlantic
  19. NAVAREA IV 324/162016-04-28 → 2017-11-16
    Sub-surface scientific moorings established until 31 jul 18 in: a. 08-05.999N 057-02.509W
    Western North Atlantic · Guyana
  20. HYDROLANT 1012/162016-04-28 → 2016-04-28
    Underwater operations in progress until further notice by M/V skandi acu in 46-56.0N 006-34.6W
    Eastern North Atlantic · Celtic Sea
  21. NAVAREA IV 263/162016-04-07 → 2016-05-01
    Trinidad and tobago
    Western North Atlantic
  22. NAVAREA IV 120/162016-02-18 → 2018-06-01
    Oceanographic survey in progress until 31 may 18 in areas bound by: a. 08-06.971N 057-02.424W, 08-06.597N…
    Western North Atlantic · Guyana
  23. HYDROLANT 415/162016-02-18 → 2016-02-23
    Survey operations 190001Z to 230001Z feb by M/V l'atalante in area bound by 47-27.1N 008-27.0W, 47-01.2N…
    Eastern North Atlantic · Celtic Sea
  24. NAVAREA IV 108/162016-02-14 → 2016-02-22
    Survey operations in progress until 21 feb by M/V cgg alize towing ten six mile long cables in area bound by…
    Western North Atlantic · Guyana
  25. NAVAREA IV 67/162016-01-27 → 2016-02-29
    Survey operations in progress until 28 feb by M/V geo celtic towing ten six mile long cables in area bound…
    Western North Atlantic · Guyana
  26. NAVAREA IV 1092/152015-12-26 → 2016-02-16
    Survey operations in progress until 15 feb 16 by M/V cgg alize towing ten six mile long cables in area bound…
    Western North Atlantic · Guyana
  27. NAVAREA IV 1078/152015-12-21 → 2016-01-27
    Survey operations in progress until 15 feb 16 by M/V geo celtic towing ten six mile long cables in area…
    Western North Atlantic · Guyana
  28. NAVAREA IV 1072/152015-12-21 → 2015-12-21
    Survey operations in progress until 15 feb 16 by M/V geo celtic towing ten six mile long cables in area…
    Western North Atlantic · Guyana
  29. NAVAREA IV 1049/152015-12-16 → 2016-04-14
    Survey operations in progress until 13 apr 16 by M/V fugro americas in area bound by 07-53-04.5N…
    Western North Atlantic · Guyana
  30. NAVAREA IV 1023/152015-12-09 → 2016-02-16
    Trinidad and tobago
    Western North Atlantic
  31. HYDROLANT 3046/152015-12-08 → 2015-12-18
    Underwater operations 091500Z to 172359Z dec by M/V crs rebecca in 34-12.8N 008-04.6W
    Eastern North Atlantic · Morocco
  32. HYDROLANT 3014/152015-12-04 → 2016-01-25
    Oceanographic operations 060001Z dec to 242359Z jan 16 by M/V discovery along trackline joining 24-30.37N…
    Eastern North Atlantic
  33. NAVAREA IV 1005/152015-12-03 → 2015-12-07
    Underwater operations in progress until 06 dec by M/V horizon geobay within 500 meters of 07-13.95N 055-11.20W
    Western North Atlantic · Suriname
  34. NAVAREA IV 962/152015-11-13 → 2015-11-23
    Trinidad and tobago
    Western North Atlantic
  35. HYDROLANT 2756/152015-11-09 → 2015-12-02
    Underwater operations 110001Z nov until further notice by M/V crs rebecca along trackline joining 45-50.73N…
    Eastern North Atlantic · Spain-northwest Coast
  36. NAVAREA IV 924/152015-11-01 → 2015-12-05
    Underwater operations 02 nov thru 04 dec by M/V james cook along trackline joining 30-07.80N 042-07.33W,…
    North Atlantic
  37. HYDROLANT 2428/152015-09-28 → 2015-10-13
    Survey operations 300001Z sep thru 122359Z oct by M/V angeles alvarino along trackline joining 28-31.36N…
    Eastern North Atlantic · Morocco · Western Sahara · Canary Islands
  38. HYDROLANT 2391/152015-09-24 → 2015-10-01
    Underwater operations in progress until 010001Z oct by M/V kri spica vicinity 47-26.70N 008-37.41W
    Eastern North Atlantic · Celtic Sea
  39. HYDROLANT 2372/152015-09-22 → 2015-10-04
    Underwater operations 230001Z sep to 032359Z oct by M/V skandi africa along trackline between 47-38N 007-35W…
    Eastern North Atlantic · Celtic Sea
  40. NAVAREA IV 777/152015-09-20 → 2015-10-04
    Survey operations 24 sep thru 03 oct by M/V siem spearfish: a. in area bound by 10-42.44N 060-35.25W,…
    Western North Atlantic · Trinidad-east Coast
  41. NAVAREA IV 771/152015-09-18 → 2015-11-22
    Trinidad and tobago
    Western North Atlantic
  42. HYDROLANT 2273/152015-09-13 → 2015-09-19
    Underwater operations 150001ZZ to 182359Z sep by M/V angeles alvarino in area bound by 36-43N 006-32W,…
    Eastern North Atlantic · Gulf of Cadiz
  43. NAVAREA IV 716/152015-08-28 → 2015-09-18
    Trinidad and tobago
    Western North Atlantic
  44. NAVAREA IV 713/152015-08-27 → 2015-11-01
    Trinidad and tobago
    Western North Atlantic
  45. HYDROLANT 1796/152015-07-21 → 2015-07-29
    Underwater operations 232200Z to 292200Z jul by M/V pourquoi pas with submersible in area bound by 47-44N…
    Eastern North Atlantic · Celtic Sea
  46. HYDROLANT 1721/152015-07-13 → 2015-07-29
    Underwater operations 160001Z to 282359Z jul by M/V angeles alvarino along tracklines between: a. 28-31.36N…
    Eastern North Atlantic · Canary Islands
  47. NAVAREA IV 574/152015-07-13 → 2015-12-21
    Survey operations in progress until 31 dec by M/V geo celtic towing ten six mile long cables in area bound…
    Western North Atlantic · Guyana
  48. NAVAREA IV 573/152015-07-13 → 2015-12-26
    Survey operations 14 jul thru 01 jan 16 by M/V cgg alize towing ten six mile long cables in area bound by…
    Western North Atlantic · Guyana
  49. NAVAREA IV 535/152015-07-03 → 2015-07-06
    Hydrographic survey by M/V thalassa: a. 03 jul along trackline between 54-10N 035-05W and 52-00N 035-05W
    North Atlantic
  50. NAVAREA IV 530/152015-07-02 → 2015-07-05
    Hydrographic survey by M/V thalassa: a. 02 jul along trackline between 55-48N 034-49W and 54-10N 035-05W
    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 14 · seahazards