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 1104/232023-09-22 → 2024-01-01
    Underwater operations in progress until 31 dec 23 by M/V sd grace in area bound by 08-16.0N 057-02.3W,…
    Western North Atlantic
  2. NAVAREA IV 875/232023-08-05 → 2023-11-12
    Survey operations 07 aug thru 11 nov by M/V cindy brown tide in area bound by 07-55.00N 055-50.00W,…
    Western North Atlantic · Suriname
  3. HYDROLANT 1688/232023-07-27 → 2023-09-07
    Underwater operations 010000Z aug until further notice by M/V 7 waves in area bound by 23-53.00N 016-48.00W,…
    Eastern North Atlantic · Mauritania
  4. NAVAREA IV 829/232023-07-22 → 2023-08-07
    Trinidad and tobago
    Eastern Caribbean Sea · Western North Atlantic
  5. NAVAREA IV 815/232023-07-20 → 2023-07-21
    Underwater operations in progress until 31 dec by M/V osv horn island in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  6. NAVAREA IV 789/232023-07-13 → 2023-07-28
    Survey operations 14 thru 27 jul by M/V atlantic spirit in area bound by 06-45.00N 055-47.50W, 06-45.00N…
    Western North Atlantic · Suriname
  7. NAVAREA IV 787/232023-07-12 → 2023-11-02
    Underwater operations in progress until 01 nov by ssc adelaar, osv atlantic liberty and barge stingray in…
    Western North Atlantic · Guyana
  8. NAVAREA IV 766/232023-07-07 → 2023-07-07
    Underwater operations in progress until 31 jul by M/V delta commander in area bound by 08-15.95N 057-02.23W,…
    Western North Atlantic
  9. NAVAREA IV 765/232023-07-07 → 2023-07-07
    Underwater operations in progress until 31 dec by M/V c-legend in area bound by 08-15.95N 057-02.23W,…
    Western North Atlantic
  10. NAVAREA IV 764/232023-07-07 → 2023-07-07
    Underwater operations in progress until 31 dec by M/V charlie comeaux in area bound by 08-15.95N 057-02.23W,…
    Western North Atlantic
  11. NAVAREA IV 760/232023-07-05 → 2023-07-07
    Underwater operations in progress until 31 aug by M/V skandi constructor in area bound by 08-15.96N…
    Western North Atlantic
  12. HYDROLANT 1503/232023-07-04 → 2023-07-15
    Survey operations in progress until 14 jul by M/V ramon margalef along trackline joining 43-00.00N…
    Eastern North Atlantic · Spain
  13. NAVAREA IV 746/232023-07-01 → 2023-07-07
    Underwater operations in progress until 31 aug by M/V jackie chouest in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  14. NAVAREA IV 745/232023-07-01 → 2024-01-01
    Underwater operations in progress until 31 dec in area bound by 08-15.96N 057-02.23W, 08-15.96N 056-54.25W,…
    Western North Atlantic
  15. NAVAREA IV 738/232023-06-30 → 2023-07-15
    Survey operations 05 thru 14 jul by M/V atlantic spirit in 07-21.61N 055-41.02W
    Western North Atlantic · Suriname
  16. NAVAREA IV 736/232023-06-29 → 2023-07-29
    Trinidad and tobago
    Eastern Caribbean Sea · Western North Atlantic
  17. NAVAREA IV 705/232023-06-22 → 2023-06-29
    Trinidad and tobago
    Eastern Caribbean Sea · Western North Atlantic
  18. NAVAREA IV 693/232023-06-21 → 2023-06-22
    Trinidad and tobago
    Western North Atlantic
  19. HYDROLANT 1320/232023-06-14 → 2023-07-21
    Survey operations in progress until 20 jul by M/V celtic explorer in vicinity of trackline joining 47-30.00N…
    Celtic Sea · Eastern North Atlantic · France To Scotland
  20. HYDROLANT 1282/232023-06-09 → 2023-07-04
    Survey operations 13 jun thru 03 jul by M/V marion dufresne along trackline joining 06-39.38N 052-04.99W,…
    Atlantic Ocean · Brazil
  21. NAVAREA IV 634/232023-06-09 → 2023-07-04
    Survey operations 13 jun thru 03 jul by M/V marion dufresne along trackline joining 06-39.38N 052-04.99W,…
    Atlantic Ocean · Brazil
  22. NAVAREA IV 633/232023-06-09 → 2023-07-07
    Underwater operations in progress until 31 dec by M/V gerard tide in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  23. NAVAREA IV 603/232023-06-01 → 2023-06-12
    Survey operations in progress until 112359Z jun by M/V marion dufresne in area bound by 06-59.70N…
    North Atlantic · Brazil
  24. HYDROLANT 1197/232023-05-29 → 2023-07-14
    Survey operations in progress until further notice by M/V amazon conqueror towing 6500 meter long cables,…
    Eastern North Atlantic · Shetland Islands
  25. NAVAREA IV 549/232023-05-18 → 2023-05-22
    Survey operations 19 thru 21 may by M/V marion dufresne in area within ten miles of 05-38.90N 051-05.20W
    Western North Atlantic · French Guiana
  26. NAVAREA IV 521/232023-05-13 → 2023-07-06
    Underwater operations in progress until 05 jul by M/V delta commander in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  27. NAVAREA IV 520/232023-05-13 → 2023-05-13
    Underwater operations in progress until 05 jul by M/V delta commander in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  28. NAVAREA IV 510/232023-05-09 → 2023-06-25
    Trinidad and tobago
    Western North Atlantic
  29. NAVAREA IV 434/232023-04-21 → 2024-01-01
    Survey operations in progress until 31 dec by M/V sanco spirit in area bound by 08-45.24N 057-04.91W,…
    Western North Atlantic · Guyana
  30. NAVAREA IV 431/232023-04-20 → 2023-06-05
    Underwater operations by M/V joides resolution: a. in progress until 27 apr in 30-07.95N 042-07.23W
    North Atlantic
  31. NAVAREA IV 426/232023-04-18 → 2023-04-21
    Survey operations 20 apr thru 31 dec by M/V sanco spirit in area bound by 08-45.24N 057-04.91W, 08-30.56N…
    Western North Atlantic · Guyana
  32. HYDROLANT 831/232023-04-17 → 2023-04-26
    Survey operations 19 thru 25 apr in area bound by 48-00.00N 009-29.00W, 48-00.00N 007-56.00W, 46-54.00N…
    Celtic Sea · Eastern North Atlantic
  33. HYDROLANT 817/232023-04-15 → 2023-05-05
    Survey operations in progress until 052100Z may by M/V guilherme V in area bound by 01-34.98N 049-01.40W,…
    Western North Atlantic · Brazil
  34. NAVAREA IV 404/232023-04-11 → 2023-04-26
    Trinidad and tobago
    Western North Atlantic
  35. NAVAREA IV 391/232023-04-07 → 2024-01-01
    Underwater operations in progress until 31 dec by M/V bourbon calm in area bound by 08-12.59N 057-01.36W,…
    Western North Atlantic
  36. NAVAREA IV 383/232023-04-06 → 2023-04-11
    Underwater operations 09 and 10 apr by M/V bourbon topaz with submersible in: a. 06-55.48N 056-06.77W
    Western North Atlantic · Suriname
  37. NAVAREA IV 334/232023-03-24 → 2023-08-01
    Survey operations 28 mar thru 31 jul by M/V gyre in area bound by 08-45.48N 052-24.97W, 07-42.93N…
    Western North Atlantic · Suriname
  38. NAVAREA IV 330/232023-03-23 → 2023-09-01
    Survey operations 28 mar thru 31 aug by M/V raleigh b in: a. 07-15.35N 055-54.57W
    Western North Atlantic · Suriname
  39. NAVAREA IV 325/232023-03-23 → 2023-03-23
    Salvage operations in progress until further notice in area bound by 28-08.00N 068-56.00W, 28-08.00N…
    Western North Atlantic
  40. NAVAREA IV 296/232023-03-16 → 2023-07-07
    Underwater operations in progress until 21 nov by M/V normand samson in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  41. NAVAREA IV 295/232023-03-15 → 2023-07-01
    Underwater operations in progress until 01 jul by M/V aht madam kalina in area bound by 08-15.96N…
    Western North Atlantic
  42. HYDROLANT 561/232023-03-14 → 2023-03-20
    Survey operations in progress until 192300Z mar by M/V ramon margalef in area bound by: 35-48.0N 007-34.0W,…
    Eastern North Atlantic · Gulf of Cadiz · Portugal · Spain
  43. NAVAREA IV 250/232023-03-07 → 2023-07-07
    Underwater operations in progress until 31 aug by tug boka expedition and barge cbc 1267 in area bound by…
    Western North Atlantic
  44. NAVAREA IV 249/232023-03-07 → 2023-04-02
    Underwater operations in progress until 01 apr by M/V knock out p in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  45. NAVAREA IV 248/232023-03-07 → 2023-07-07
    Underwater operations in progress until 30 nov by M/V saipem constellation in area bound by 08-15.96N…
    Western North Atlantic
  46. NAVAREA IV 247/232023-03-07 → 2023-06-09
    Underwater operations in progress until 31 jul by M/V gerard tide in area bound by 08-15.96N 057-02.23W,…
    Western North Atlantic
  47. HYDROLANT 461/232023-02-28 → 2023-03-01
    Survey operations 281500Z feb to 011700Z mar by M/V sarmiento de gamboa in area within seven miles of…
    Eastern North Atlantic · Canary Islands
  48. NAVAREA IV 214/232023-02-27 → 2023-08-01
    Survey operations in progress until 31 jul by M/V leeway odyssey in area bound by 07-06.98N 058-07.94W,…
    Western North Atlantic · Guyana
  49. HYDROLANT 443/232023-02-26 → 2023-02-28
    Underwater operations 261500Z thru 281300Z feb in area within 7 miles of 29-10.00N 015-29.00W
    Eastern North Atlantic · Canary Islands
  50. NAVAREA IV 206/232023-02-24 → 2023-02-27
    Survey operations in progress until 31 jul by M/V leeway odyssey in area bound by 07-06.98N 058-07.94W,…
    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 2 · seahazards