56 survey operations in force

Hydrographic and scientific survey vessels, often towing long arrays.

What the archive shows

The available survey operations archive contains 13,011 messages across 30 issue years, from 1997 to 2026. The year links below provide the source and sea-area breakdowns for each period.

The current list includes messages issued from 2024-01-03 to 2026-10-01. A warning can remain in force for an extended operation, so this list is not a list of new incidents.

nga_inforce accounts for 39 of 56 recorded messages (70%), the largest source in the current list group in this selection.

The NGA archive froze in 2024-05; live collection began 2026-08-17. Counts near that gap are incomplete. Separate messages may describe updates to the same activity.

  1. NAVAREA III 147/262026-10-01 00:00Z
    Scientific research and underwater operations by four vessels in the Mediterranean Sea from 1 to 25 October 2026; a wide berth is requested.
    Mediterranean Sea
  2. AUSCOAST 305/262026-09-30 02:01Z
    Special purpose vessel Samson Explorer conducts underwater operations in area bounded by 39-47.00 south to 39-53.00 south and 145-46.00 east to 145-52.00 east requesting 2.5 nautical mile clearance.
  3. AUSCOAST 303/262026-09-28 04:25Z
    Vessel Shark 1 is conducting hydrographic survey from 11-30.00 S to 12-22.00 S and 125-05.00 E to 126-01.00 E, supported by unmanned surface vessels; 2-nautical-mile clearance requested.
  4. HYDROLANT 1900/262026-09-25 09:46Z
    Brazil's South Atlantic waters host underwater operations by M/V Comando B daily from 26 September to 10 October, and vessels should give a wide berth.
    South Atlantic · Brazil
  5. HYDROLANT 1899/262026-09-25 09:40Z
    Underwater operations by vessel Comando B occur daily 0800-1800 UTC 26 September through 10 October off Brazil at 20-23.78S 040-09.43W, requesting wide berth; cancel 10 October 1900 UTC.
    South Atlantic · Brazil
  6. HYDROLANT 1898/262026-09-25 09:02Z
    Survey operations occur in the Black Sea, Turkey, from 26 September through 03 July 2027, with three vessels requesting a five-mile berth.
    Black Sea · Turkey
  7. HYDROARC 258/262026-09-25 03:41Z
    A scientific mooring is established in Deese Strait, Canada, at 68-55.94N 105-49.66W, with top float at 122 meters.
    Deese Strait · Canada
  8. HYDROARC 256/262026-09-25 03:31Z
    A scientific mooring with a top float at 69 meters is established in Queen Maud Gulf, Canada, at 68-48.95N 105-06.53W.
    Queen Maud Gulf · Canada
  9. HYDROPAC 2775/262026-09-25 01:40Z
    Salvage operations by the motor vessel KMAX EMPEROR are underway until further notice in the Gulf of Kachchh, India, near 22-43.76N 069-53.61E, with a wide berth requested.
    Gulf of Kachchh · India
  10. NAVAREA IV 924/262026-09-24 18:37Z
    NAVAREA IV lists positions of mobile offshore drilling units at 241615Z September, including new positions and new rigs.
  11. NAVAREA 7 267/262026-09-23 00:00Z
    Research vessel Marion Dufresne conducts oceanographic survey in Indian Ocean southwest sector offshore Mayotte 24 September to 4 October 2026, requesting vessels give 1 nautical mile wide berth.
  12. AUSCOAST 300/262026-09-22 07:31Z
    Special purpose vessel Fugro Kwilena conducts underwater operations within coordinates 20-19.72 S to 20-35.47 S and 115-42.52 E to 115-43.80 E, requests 1.5 nautical mile clearance.
  13. HYDROPAC 2700/262026-09-17 22:43Z
    Russia establishes a scientific mooring at seven metres depth in Bering Strait at 66-19.59N 168-57.01W, cancelling a previous warning.
    Bering Strait · Russia
  14. NAVAREA XII 639/262026-09-17 22:43Z
    Scientific moorings at 15 meters depth are established in the Bering Strait, Alaska, at two locations, and a previous warning is cancelled.
    Bering Strait · Alaska
  15. HYDROPAC 2694/262026-09-17 16:01Z
    Survey operations are underway in the Persian Gulf off Qatar from 18 September until further notice by the Fugro Resilience, with a wide berth requested.
    Persian Gulf · Qatar
  16. NAVAREA III 139/262026-09-12 00:00Z
    Black Sea drilling operations by Yildirim rig run from 14 September 2026 to 19 October 2026 in area around 42 50.93 N 031 15.60 E; wide berth requested.
    Black Sea
  17. NAVAREA II 316/262026-09-04 03:12Z
    A list gives last known positions of rigs and drill ships in the Gulf of Guinea, Pointe Noire and Sierra Leone at 040430 UTC Sep 26.
    Gulf of Guinea, Pointe Noire, Sierra Leone · Rig List
  18. NAVAREA III 132/262026-09-03 00:00Z
    Drilling operations by Fatih platform in Black Sea, with support vessels, run from September 4 2026 to March 23 2027.
    Black Sea
  19. HYDROARC 191/262026-08-28 09:28Z
    Survey operations in Norwegian Sea by Amazon Conqueror towing twelve 10,000-meter cables, seven mile berth requested.
    Norwegian Sea
  20. NAVAREA IV 832/262026-08-27 10:37Z
    Underwater operations by vessel Seven Seas near Trinidad and Tobago until 052200 UTC December, 500 meter berth requested.
    North Atlantic
  21. NAVAREA III 128/262026-08-27 00:00Z
    Drilling operations by Yavuz rig and support vessels are underway in the Black Sea from 28 Aug 26 to 11 Nov 26, requiring 10 nm receipt.
    Black Sea
  22. AUSCOAST 280/262026-08-20 13:27Z
    Drill rig Valaris 107 is at position 38 degrees 17.79 minutes south, 147 degrees 40.57 minutes east, requesting 2.5 nautical miles clearance.
  23. AUSCOAST 277/262026-08-17 08:16Z
    Drill rig Transocean Equinox is located at 38-46.20S 142-48.80E, with 2.5 nautical miles clearance requested.
  24. NAVAREA III 123/262026-08-17 00:00Z
    Drilling operations by KANUNI platform in Black Sea from 18 Aug 26 to 07 Oct 26, 10 nautical mile wide berth requested.
    Black Sea
  25. NAVAREA III 122/262026-08-17 00:00Z
    Drilling operations by Abdulhamid Han rig with support vessels in Black Sea from 19 Aug to 27 Nov 26, requesting 10 nautical mile clearance.
    Black Sea
  26. NAVAREA IV 831/262026-08-13 21:20Z
    Survey operations by vessel HOS Ridgewind are underway off Guyana from September 1 to November 20, 2026, in a bounded area; wide berth requested.
    North Atlantic · Guyana
  27. HYDROPAC 2288/262026-08-10 06:58Z
    Underwater operations are in progress by vessel VE Constructor in an area off Australia, bounded by 19-12S to 19-21S and 116-30E to 116-50E, requesting one mile berth.
    Indian Ocean · Australia
  28. AUSCOAST 270/262026-08-10 06:38Z
    Special purpose vessel VE Constructor conducting underwater operations in area bounded by 19-12S to 19-21S and 116-30E to 116-50E, 0.5 nautical miles clearance requested.
  29. HYDROPAC 2280/262026-08-09 10:28Z
    Survey operations by vessel Vision 2 in Persian Gulf, Kuwait, from 10 August until further notice. Wide berth requested.
    Persian Gulf · Kuwait
  30. HYDROPAC 2249/262026-08-06 02:52Z
    Survey operations by vessel PXGEO 2 towing eight 5-mile cables continue until 31 December in Gulf of Thailand and South China Sea; wide berth requested.
    Gulf of Thailand · South China Sea · Malaysia
  31. AUSCOAST 267/262026-08-05 22:22Z
    Drill rig JANSZ is at position 19-52.73S 114-36.50E, requesting a 2.5 nautical mile clearance.
  32. NAVAREA IV 705/262026-07-20 20:16Z
    Survey operations are underway until 31 December near Guyana by vessel AHT DN87 and tug TELESTO; wide berth requested.
    North Atlantic · Guyana
  33. HYDROPAC 2014/262026-07-14 09:44Z
    Survey operations by vessel Nikolay Trubyatchinskiy in Sea of Okhotsk near Kuril Islands from 15 July to 15 October, requesting 400 meter berth.
    Sea of Okhotsk · Kuril Islands
  34. NAVAREA IV 621/262026-06-24 15:47Z
    Underwater operations by vessel Prinsengracht continue in Guyana until 31 Dec; wide berth requested.
    North Atlantic · Guyana
  35. NAVAREA IV 616/262026-06-23 19:53Z
    Survey operations by vessel Moonrise G continue in Guyana waters until November 15; wide berth requested.
    North Atlantic · Guyana
  36. NAVAREA IV 615/262026-06-23 19:13Z
    Survey operations by vessel BGP Prospector continue in the North Atlantic near Guyana until November 15, with wide berth requested.
    North Atlantic · Guyana
  37. HYDROLANT 1160/262026-06-17 01:44Z
    Underwater operations by vessel Fugro Vaquita are in progress until 140001Z November, with wide berth requested; cancels HYDROLANT 1157/26.
  38. NAVAREA IV 586/262026-06-15 15:49Z
    Underwater operations by vessel Normand Navigator continue until 31 Dec near Guyana, wide berth requested.
    North Atlantic · Guyana
  39. NAVAREA IV 552/262026-06-09 20:47Z
    Survey operations are underway until 16 November by vessel SeaQuest in an area near 58°W 07°N, wide berth requested.
  40. NAVAREA IV 551/262026-06-09 20:15Z
    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.
  41. NAVAREA IV 539/262026-06-05 21:07Z
    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
  42. NAVAREA III 86/262026-06-03 00:00Z
    In the Adriatic Sea, the Key Manhattan rig is drilling at 44-05.12N 013-45.27E from June 3 to November 20, 2026; wide berth requested.
    Adriatic Sea
  43. HYDROPAC 1516/262026-05-22 09:24Z
    Underwater operations are active in the Sea of Okhotsk, Russia, from 25 May through 31 December; wide berth requested.
    Sea of Okhotsk · Russia
  44. HYDROPAC 1291/262026-04-23 12:31Z
    Underwater operations in the Sea of Okhotsk, Russia, run from 1 May to 31 October; wide berth requested.
    Sea of Okhotsk · Russia
  45. HYDROPAC 957/262026-03-29 17:26Z
    Underwater operations are in progress by vessel Safe Boreas in the eastern Indian Ocean off Australia, within 12-54.90S 124-25.10E to 12-59.90S 124-35.10E.
    Eastern Indian Ocean · Australia
  46. AUSCOAST 120/262026-03-29 16:51Z
    Special purpose vessel Safe Boreas is supporting underwater operations in a bounded area; 2.5 nautical mile clearance requested.
  47. NAVAREA IV 98/262026-02-03 17:15Z
    Survey operations by vessel Fugro Brasilis are ongoing until 31 December 2026 off Guyana; wide berth requested.
    North Atlantic · Guyana
  48. HYDROPAC 292/262026-01-30 15:19Z
    Survey operations by vessel Halul 41 are in progress in the Persian Gulf near Qatar until further notice; wide berth requested.
    Persian Gulf · Qatar
  49. HYDROPAC 241/262026-01-27 10:37Z
    A survey vessel in Makassar Strait, Indonesia, is towing twelve 10,050-meter cables until further notice; wide berth requested.
    Makassar Strait · Indonesia
  50. NAVAREA IV 1431/252025-12-31 18:05Z
    Survey operations by vessel BOS PRINCESS continue until 31 Dec 2026 off Guyana; wide berth requested.
    North Atlantic · Guyana

Archive by year · 13,011 since 1997

97
98
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
25
26

Terms used in surveys warnings

Seismic survey
A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
Towed array / streamer
Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
Survey operations
A research or survey vessel is mapping the seabed or water column, often while towing equipment.
Scientific mooring
Instruments anchored to the seabed and held up by floats, sometimes just below the surface, left for months to measure the ocean.

All warning terms →

Not for navigation. Follow official NAVAREA broadcasts and your national MSI service.