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 256/212021-03-24 → 2021-04-01
    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
  2. HYDROLANT 793/212021-03-20 → 2021-04-06
    Survey operations 23 mar thru 05 apr by M/V angeles alvarino in area bound by 31-00N 018-00W, 24-00N…
    Eastern North Atlantic · Canary Islands
  3. NAVAREA IV 231/212021-03-17 → 2021-03-24
    NAVAREA IV mobile offshore drilling units at 171257Z mar in: a. the 150 29-14.4N 091-22.6W
  4. NAVAREA IV 190/212021-03-03 → 2021-03-17
    NAVAREA IV mobile offshore drilling units at 032200Z mar in: a. the 150 29-14.4N 091-22.6W
  5. NAVAREA IV 186/212021-03-02 → 2021-07-01
    Survey operations in progress until 30 jun by M/V ted smith and M/V russell bouziga in area bound by…
    Western North Atlantic
  6. NAVAREA IV 177/212021-02-26 → 2021-03-03
    Survey operations 28 feb thru 02 mar by M/V skandi skansen in area bound by 10-46.36N 060-31.23W, 10-44.29N…
    Western North Atlantic · Trinidad
  7. NAVAREA IV 153/212021-02-18 → 2021-02-24
    NAVAREA IV mobile offshore drilling unit positions at 181327Z feb: a. the 150 29-14.4N 091-22.6W
  8. NAVAREA IV 126/212021-02-10 → 2021-02-18
    NAVAREA IV mobile offshore drilling unit positions at 102200Z feb: a. the 150 29-14.4N 091-22.6W
  9. HYDROLANT 352/212021-02-06 → 2021-02-08
    Underwater operations in progress until further notice in area bound by 16-06.9N 016-35.2W, 16-06.8N…
    Eastern North Atlantic · Mauritania
  10. NAVAREA IV 106/212021-02-03 → 2021-02-10
    NAVAREA IV mobile offshore drilling unit positions at 032200Z feb: a. the 150 29-14.4N 091-22.6W
  11. NAVAREA IV 64/212021-01-21 → 2021-03-01
    Survey operations 25 jan thru 28 feb by M/V sealand chirp in area bound by 06-50.036N 058-10.720W,…
    Western North Atlantic · Guyana
  12. NAVAREA IV 22/212021-01-07 → 2021-07-01
    Underwater operations in progress until 30 jun by M/V saipem FDS2 in area bound by 08-05.94N 056-56.97W,…
    Western North Atlantic
  13. HYDROLANT 36/212021-01-06 → 2021-01-11
    Survey operations in progress until 110001Z jan by M/V beautemps beaupre in area bound by 47-42.3N…
    Eastern North Atlantic · Celtic Sea
  14. NAVAREA IV 1254/202020-12-31 → 2021-06-05
    Underwater operations 01 jan thru 31 dec by M/V aht orourke tide in area bound by 08-35N 057-30W, 08-35N…
    Western North Atlantic · Guyana
  15. NAVAREA IV 1253/202020-12-31 → 2021-06-05
    Underwater operations 01 jan thru 31 dec by M/V aht seaways 20, M/V aht bourbon liberty 308 and M/V aht…
    Western North Atlantic · Guyana
  16. NAVAREA IV 1252/202020-12-31 → 2022-01-01
    Underwater operations 01 jan thru 31 dec by M/V seacor demerara in area bound by 08-03.51N 056-57.48W,…
    Western North Atlantic
  17. NAVAREA IV 1251/202020-12-31 → 2022-01-01
    Underwater operations 01 jan thru 31 dec by M/V seacor nile in area bound by 08-03.51N 056-57.48W, 08-06.56N…
    Western North Atlantic
  18. NAVAREA IV 1250/202020-12-31 → 2021-01-08
    Underwater operations 01 jan thru 31 dec by M/V seacor murray in area bound by 08-06.56N 056-56.52W,…
    Western North Atlantic
  19. NAVAREA IV 1249/202020-12-31 → 2021-01-08
    Underwater operations 01 jan thru 31 dec by M/V seacor amazon in area bound by 08-06.56N 056-56.52W,…
    Western North Atlantic
  20. NAVAREA IV 1248/202020-12-31 → 2021-01-08
    Underwater operations 01 jan thru 31 dec by M/V seacor mixteca in area bound by 08-06.56N 056-56.52W,…
    Western North Atlantic
  21. NAVAREA IV 1247/202020-12-31 → 2021-01-08
    Underwater operations 01 jan thru 31 dec by M/V seacor congo in area bound by 08-06.56N 056-56.52W,…
    Western North Atlantic
  22. NAVAREA IV 1246/202020-12-31 → 2021-01-08
    Underwater operations 01 jan thru 31 dec by M/V emily day mccall in area bound by 08-06.56N 056-56.52W,…
    Western North Atlantic
  23. NAVAREA IV 1245/202020-12-31 → 2021-01-08
    Underwater operations 01 jan thru 31 dec by M/V michael crombie mccall in area bound by 08-06.56N…
    Western North Atlantic
  24. NAVAREA IV 1237/202020-12-29 → 2020-12-31
    Survey operations in progress until 31 dec by M/V seacor demerara in area bound by 08-03.51N 056-57.48W,…
    Western North Atlantic · Guyana
  25. HYDROLANT 3903/202020-12-17 → 2020-12-22
    Underwater operations in progress until further notice by M/V edda flora along trackline joining 35-45.8N…
    Eastern North Atlantic · Morocco
  26. HYDROLANT 3858/202020-12-14 → 2020-12-17
    Underwater operations in progress until further notice by M/V edda flora in vicinity of trackline joining…
    Eastern North Atlantic · Morocco
  27. NAVAREA IV 1203/202020-12-13 → 2021-01-26
    Survey operations 18 dec thru 25 jan 21 by M/V fugro brasilis in area bound by 08-00N 055-15W, 08-20N…
    Western North Atlantic
  28. HYDROLANT 3712/202020-11-28 → 2020-12-25
    Survey operations 02 thru 24 dec by M/V fugro supporter along trackline joining 19-23.8N 019-59.2W, 20-36.3N…
    Eastern North Atlantic
  29. NAVAREA IV 1160/202020-11-28 → 2021-01-01
    Underwater operations in progress until 31 dec in vicinity: a. 07-57.12N 056-44.89W
    Western North Atlantic
  30. HYDROLANT 3682/202020-11-26 → 2020-11-28
    Survey operations in progress until 272359Z nov by M/V sw empress towing ten five mile long cables in area…
    Eastern North Atlantic · Senegal
  31. NAVAREA IV 1146/202020-11-24 → 2020-12-09
    Survey operations by M/V delta monarch 24 nov thru 08 dec in areas bound by: a. 10-04.21N 060-25.15W,…
    Western North Atlantic · Venezuela · Trinidad
  32. NAVAREA IV 1049/202020-10-30 → 2021-03-02
    Survey operations in progress until 01 mar 21 by M/V geo caribbean in area bound by 07-34.71N 054-36.55W,…
    Western North Atlantic · Suriname
  33. HYDROLANT 3285/202020-10-28 → 2020-11-01
    Survey operations until 14 nov by M/V miguel oliver in area bound by 37-04N 007-23W, 37-04N 006-54W, 36-54N…
    Eastern North Atlantic · Gulf of Cadiz · Alboran Sea · Spain
  34. NAVAREA IV 1028/202020-10-23 → 2020-12-01
    Survey operations 24 oct thru 30 nov 20 by M/V echo trace 2 in area bound by 06-50.04N 058-10.72W, 06-49.67N…
    Western North Atlantic · Guyana
  35. NAVAREA IV 1008/202020-10-18 → 2020-10-30
    Survey operations in progress until 01 mar 21 by M/V geo caribbean in area bound by 06-57.99N 055-52.01W,…
    Western North Atlantic · Suriname
  36. NAVAREA IV 963/202020-10-08 → 2020-10-18
    Survey operations 13 thru 17 oct by M/V emlo in area bound by 05-16.6N 052-37.3W, 05-13.1N 052-32.7W,…
    Western North Atlantic · French Guiana
  37. NAVAREA IV 954/202020-10-05 → 2021-01-01
    Guyana 1. survey operations in progress until 31 dec by M/V aht seaways 20, M/V aht bourbon liberty 308, in…
    Western North Atlantic
  38. NAVAREA IV 928/202020-09-28 → 2020-10-08
    Survey operations 30 sep thru 07 oct by M/V meagan in area bound by 10-09.08N 060-59.65W, 10-12.54N…
    Western North Atlantic · Trinidad
  39. NAVAREA IV 840/202020-09-04 → 2020-09-11
    Underwater operations 05 thru 14 sep by M/V modu noble don taylor, M/V paradise island, M/V sanibel island,…
    Western North Atlantic
  40. HYDROLANT 2673/202020-08-30 → 2020-09-01
    Survey operations in progress until further notice by M/V ridley thomas along trackline joining 48-29.2N…
    Celtic Sea · Eastern North Atlantic
  41. HYDROLANT 2632/202020-08-26 → 2020-08-30
    Survey operations by M/V ridley thomas 27 aug until further notice in vicinity of trackline joining 44-46.2N…
    Eastern North Atlantic · Bay of Biscay · Spain
  42. NAVAREA IV 790/202020-08-25 → 2021-01-01
    Underwater operations in progress until 31 dec 20 by M/V normand installer in area bound by 08-01.5N…
    Western North Atlantic
  43. HYDROLANT 2612/202020-08-24 → 2020-08-26
    Survey operations 26 thru 28 aug by M/V ridley thomas along trackline joining 44-46.2N 004-59.1W, 45-34.5N…
    Eastern North Atlantic · Bay of Biscay · Spain
  44. NAVAREA IV 711/202020-08-05 → 2020-08-07
    Modu noble tom madden will move from 08-04.10N 056-57.73W to 08-03.533N 056-57.46W on 06 aug
    Western North Atlantic · Guyana · Rigmove
  45. HYDROLANT 2304/202020-07-21 → 2020-07-24
    Survey operations 22 thru 31 jul by M/V ridley thomas along trackline joining 47-04.5N 010-42.3W, 48-26.5N…
    Eastern North Atlantic
  46. HYDROLANT 2291/202020-07-21 → 2020-07-24
    Survey operations in progress until 23 jul M/V sarmiento de gamboa in area bound by 43-38.0N 009-08.1W,…
    Eastern North Atlantic · Spain
  47. HYDROLANT 2174/202020-07-08 → 2020-07-21
    Survey operations 10 thru 23 jul by M/V sarmeinto de gamboa along trackline between 43-00N 009-20W, 43-00N…
    Eastern North Atlantic · Spain
  48. NAVAREA IV 557/202020-06-26 → 2020-08-20
    Underwater operations 01 jul thru 19 aug by M/V havila harmony with submersible in a. 10-00.95N 060-32.04W
    Western North Atlantic · Trinidad
  49. NAVAREA IV 455/202020-05-29 → 2020-07-18
    Survey operations in progress until further notice by M/V ramform atlas towing 16 five mile long cables in…
    Western North Atlantic
  50. NAVAREA IV 444/202020-05-27 → 2020-05-29
    Survey operations in progress until further notice by M/V ramform atlas towing 16 five mile long cables in…
    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 7 · seahazards