| 1 | 3,006 d | Surveys | Scientific mooring F3-4 in 78-50.33N 007-56.16E Greenland Sea | HYDROARC 3/03 2003-02-26 → 2011-05-21 |
| 2 | 2,690 d | Surveys | Scientific moorings established: a. BC1 in 71-03.12N 159-32.54W Arctic Ocean | HYDROARC 3/04 2004-01-08 → 2011-05-21 |
| 3 | 2,690 d | Surveys | Scientific moorings established: a. BS7 in 71-34.07N 151-54.82W Beaufort Sea | HYDROARC 4/04 2004-01-08 → 2011-05-21 |
| 4 | 2,690 d | Surveys | Scientific moorings established: a. arpw in 71-41.34N 152-32.69W Beaufort Sea | HYDROARC 5/04 2004-01-08 → 2011-05-21 |
| 5 | 2,690 d | Surveys | Scientific moorings established: a. BS4 in 71-26.29N 152-00.72W Beaufort Sea | HYDROARC 6/04 2004-01-08 → 2011-05-21 |
| 6 | 2,465 d | Surveys | Scientific moorings established 04 aug: a. KS01 in 80-33.47N 068-54.46W Baffin Bay | HYDROARC 4/03 2003-10-02 → 2010-07-02 |
| 7 | 2,465 d | Surveys | Scientific moorings established 05 aug: a. KS05 in 80-31.14N 068-34.81W Baffin Bay | HYDROARC 5/03 2003-10-02 → 2010-07-02 |
| 8 | 2,465 d | Surveys | Scientific moorings established 06 aug: a. KS16 in 80-45.93N 068-48.82W Baffin Bay | HYDROARC 6/03 2003-10-02 → 2010-07-02 |
| 9 | 2,431 d | Surveys | Beaufort Sea Arctic · Beaufort Sea | HYDROARC 56/10 2010-08-11 → 2017-04-07 |
| 10 | 2,405 d | Surveys | Scientific moorings established in 89-27.29N 054-19.74E Arctic Ocean | HYDROARC 7/04 2004-10-18 → 2011-05-21 |
| 11 | 2,367 d | Surveys | Scientific moorings established in: a. 81-18.41N 061-48.82W Baffin Bay | HYDROARC 1/04 2004-01-08 → 2010-07-02 |
| 12 | 2,367 d | Surveys | Scientific moorings established in: a. 78-54.31N 075-48.39W Baffin Bay | HYDROARC 2/04 2004-01-08 → 2010-07-02 |
| 13 | 2,356 d | Surveys | Chuchki Sea Arctic · Arctic Ocean | HYDROARC 103/10 2010-10-25 → 2017-04-07 |
| 14 | 2,356 d | Surveys | B. 70-19.937N 133-44.458W Arctic · Beaufort Sea · Beaufort Sea | HYDROARC 102/10 2010-10-25 → 2017-04-07 |
| 15 | 2,351 d | Surveys | B. 70-03.51N 133-43.03W Arctic · Beaufort Sea · Beaufort Sea | HYDROARC 193/12 2012-09-29 → 2019-03-08 |
| 16 | 2,285 d | Surveys | Beaufort Sea Canada-north Coast · The Northwestern Passages | HYDROARC 112/12 2012-08-06 → 2018-11-08 |
| 17 | 2,222 d | Surveys | Scientific moorings established in: a. M01-04 65-42-08.4N 168-15-14.7W Chukchi Sea | HYDROARC 1/05 2005-04-19 → 2011-05-21 |
| 18 | 2,132 d | Surveys | Scientific mooring established in 89-15.173N 064-41.509E Arctic Ocean | HYDROARC 3/05 2005-07-18 → 2011-05-21 |
| 19 | 1,865 d | Surveys | Scientific moorings established in: a. OSL-1 80-21.890N 101-26.064E Laptev Sea | HYDROARC 1/06 2006-05-23 → 2011-07-02 |
| 20 | 1,865 d | Surveys | Scientific moorings established in: a. M1-D 78-26.637N 125-40.194E Laptev Sea | HYDROARC 2/06 2006-05-23 → 2011-07-02 |
| 21 | 1,823 d | Surveys | Scientific mooring established in 71-00N 134-00W Beaufort Sea | HYDROARC 3/06 2006-05-23 → 2011-05-21 |
| 22 | 1,718 d | Surveys | Chuckchi Sea Arctic · Arctic Ocean | HYDROARC 131/14 2014-07-22 → 2019-04-05 |
| 23 | 1,714 d | Surveys | Bottom scientific mooring established 78-27.994N 125-40.909E Arctic Ocean | HYDROARC 30/06 2006-10-21 → 2011-07-02 |
| 24 | 1,714 d | Surveys | Bottom scientific mooring established 76-30N 126-00E Laptev Sea | HYDROARC 31/06 2006-10-21 → 2011-07-02 |
| 25 | 1,714 d | Surveys | Bottom scientific mooring established 78-30N 142-00E Arctic Ocean | HYDROARC 32/06 2006-10-21 → 2011-07-02 |
| 26 | 1,714 d | Surveys | Bottom scientific mooring established 79-55.717N 142-21.812E Arctic Ocean | HYDROARC 33/06 2006-10-21 → 2011-07-02 |
| 27 | 1,714 d | Surveys | Bottom scientific mooring established 80-57.746N 105-00.225E Arctic Ocean | HYDROARC 34/06 2006-10-21 → 2011-07-02 |
| 28 | 1,714 d | Surveys | Bottom scientific mooring established 81-33.761N 030-55.390E Arctic Ocean | HYDROARC 35/06 2006-10-21 → 2011-07-02 |
| 29 | 1,673 d | Surveys | Scientific mooring established in 75-00.242N 149-57.742W Arctic Ocean | HYDROARC 4/06 2006-10-21 → 2011-05-21 |
| 30 | 1,673 d | Surveys | Scientific mooring established in 78-00.967N 149-51.544W Arctic Ocean | HYDROARC 5/06 2006-10-21 → 2011-05-21 |
| 31 | 1,673 d | Surveys | Bottom scientific mooring, top float 50 meters established in 76-59.457N 139-58.407W Arctic Ocean | HYDROARC 6/06 2006-10-21 → 2011-05-21 |
| 32 | 1,673 d | Surveys | Bottom scientific mooring, top float 50 meters established in 71-46.506N 131-52.711W Beaufort Sea | HYDROARC 7/06 2006-10-21 → 2011-05-21 |
| 33 | 1,673 d | Surveys | Bottom scientific mooring, top float 48 meters established in 72-34.680N 127-27.174W Beaufort Sea | HYDROARC 9/06 2006-10-21 → 2011-05-21 |
| 34 | 1,672 d | Surveys | Bottom scientific mooring established 71-49.676N 131-45.663W Beaufort Sea | HYDROARC 36/06 2006-10-21 → 2011-05-21 |
| 35 | 1,644 d | Surveys | Salvage operations are in progress off Sri Lanka at 07 degrees 04.55 minutes north, 079 degrees 46.48 minutes east; wide berth requested. Northern Indian Ocean · Sri Lanka · Laccadive Sea | HYDROPAC 377/22 2022-02-12 → 2026-08-14 |
| 36 | 1,525 d | Surveys | Scientific mooring established vicinity 72-36.91N 158-42.13W Arctic · Chukchi Sea · Arctic Ocean | HYDROARC 268/14 2014-10-01 → 2018-12-04 |
| 37 | 1,525 d | Surveys | Scientific mooring established vicinity 72-48.01N 158-24.76W Arctic · Chukchi Sea · Arctic Ocean | HYDROARC 269/14 2014-10-01 → 2018-12-04 |
| 38 | 1,481 d | Surveys | A scientific mooring at 95 meters depth is established at 73-15.78N 065-32.05E in the Kara Sea until further notice; wide berth requested. Kara Sea · Kara Sea | HYDROARC 175/22 2022-07-25 → 2026-08-14 |
| 39 | 1,459 d | Surveys | B. bgos-d 73-59.64N 139-58.95W, at depth 3504 meters Arctic · Beaufort Sea · Arctic Ocean | HYDROARC 160/12 2012-09-06 → 2016-09-04 |
| 40 | 1,456 d | Surveys | Underwater operations are underway at 25-36.90N 054-25.50E in the Persian Gulf, United Arab Emirates, until further notice, and a one-mile berth is requested. Persian Gulf · U.A.E · Persian Gulf | HYDROPAC 2277/22 2022-08-19 → 2026-08-14 |
| 41 | 1,456 d | Surveys | A scientific mooring with its top float 15 meters below the surface has been established in Coronation Gulf, Canada at 67-53.89N 111-21.21W. Coronation Gulf · Canada · The Northwestern Passages | HYDROARC 223/22 2022-08-19 → 2026-08-14 |
| 42 | 1,456 d | Surveys | A scientific mooring with top float 15 meters below surface is established in Coronation Gulf, Canada at 68-20.75N 112-21.12W. Coronation Gulf · Canada · The Northwestern Passages | HYDROARC 224/22 2022-08-19 → 2026-08-14 |
| 43 | 1,454 d | Surveys | Scientific moorings with top floats 15 meters below surface are established at two positions in Coronation Gulf, Canada. Coronation Gulf · Canada · The Northwestern Passages | HYDROARC 228/22 2022-08-21 → 2026-08-14 |
| 44 | 1,451 d | Surveys | Scientific moorings are established in Queen Maud Gulf, Canada at three positions with top floats at four, twenty, and four meters. Queen Maud Gulf · Canada · The Northwestern Passages | HYDROARC 235/22 2022-08-24 → 2026-08-14 |
| 45 | 1,420 d | Surveys | Scientific moorings are established at several positions in Lancaster Sound, Canada, with top floats between 26 and 246 meters. Lancaster Sound · Canada · The Northwestern Passages | HYDROARC 291/22 2022-09-23 → 2026-08-14 |
| 46 | 1,356 d | Surveys | Scientific mooring established in 89.44N 145.11W | HYDROARC 27/06 2006-10-21 → 2010-07-09 |
| 47 | 1,355 d | Surveys | Subsurface scientific mooring, top float 50 meters established in 73-27.9N 136-59.8W Beaufort Sea | HYDROARC 23/06 2006-10-21 → 2010-07-08 |
| 48 | 1,355 d | Surveys | Scientific mooring, top float 26 meters established in 71-16.9N 127-32.1W Beaufort Sea | HYDROARC 18/06 2006-10-21 → 2010-07-08 |
| 49 | 1,354 d | Surveys | Bottom scientific mooring, top float 51 meters established in 70-19.973N 133-44.274W Beaufort Sea | HYDROARC 11/06 2006-10-21 → 2010-07-06 |
| 50 | 1,354 d | Surveys | Scientific mooring, top float 30 meters established in 70-53.7N 132-54.8W Beaufort Sea | HYDROARC 15/06 2006-10-21 → 2010-07-06 |
| 51 | 1,353 d | Surveys | Scientific mooring, top float 40 meters established in 71-23.73N 152-02.18W Beaufort Sea | HYDROARC 29/06 2006-10-21 → 2010-07-06 |
| 52 | 1,352 d | Surveys | Bottom scientific mooring, top float 33 meters established in 70-53.761N 129-45.721W Beaufort Sea | HYDROARC 13/06 2006-10-21 → 2010-07-04 |
| 53 | 1,352 d | Surveys | Scientific mooring, top float 27 meters established in 71-01.3N 133-46.6W Beaufort Sea | HYDROARC 17/06 2006-10-21 → 2010-07-04 |
| 54 | 1,351 d | Surveys | Scientific mooring, top float 30 meters established in 71-09.7N 133-52.6W Beaufort Sea | HYDROARC 20/06 2006-10-21 → 2010-07-04 |
| 55 | 1,351 d | Surveys | Scientific mooring, top float 28 meters established in 70-58.4N 126-06.7W The Northwestern Passages | HYDROARC 21/06 2006-10-21 → 2010-07-04 |
| 56 | 1,351 d | Surveys | Scientific mooring, top float 34 meters established in 71-22.9N 134-04.2W Beaufort Sea | HYDROARC 22/06 2006-10-21 → 2010-07-04 |
| 57 | 1,351 d | Surveys | Scientific mooring established in 85.98N 162.19W | HYDROARC 26/06 2006-10-21 → 2010-07-04 |
| 58 | 1,350 d | Surveys | Scientific mooring, top float 30 meters established in 70-30N 135-30W Beaufort Sea | HYDROARC 14/06 2006-10-21 → 2010-07-03 |
| 59 | 1,350 d | Surveys | Scientific mooring, top float 30 meters established in 71-08.9N 128-08.0W Beaufort Sea | HYDROARC 16/06 2006-10-21 → 2010-07-03 |
| 60 | 1,350 d | Surveys | Scientific mooring, top float 50 meters established in 86.454N 046.412W | HYDROARC 25/06 2006-10-21 → 2010-07-03 |
| 61 | 1,350 d | Surveys | Bottom scientific mooring, top float 50 meters established in 73-27.875N 136-59.815W Beaufort Sea | HYDROARC 8/06 2006-10-21 → 2010-07-02 |
| 62 | 1,350 d | Surveys | Bottom scientific mooring, top float 52 meters established in 70-19.937N 133-44.463W Beaufort Sea | HYDROARC 10/06 2006-10-21 → 2010-07-02 |
| 63 | 1,350 d | Surveys | Bottom scientific mooring, top float 43 meters established in 71-02.251N 133-24.180W Beaufort Sea | HYDROARC 12/06 2006-10-21 → 2010-07-02 |
| 64 | 1,350 d | Surveys | Scientific mooring, top float 50 meters established in 77-59.585 149-57.866W | HYDROARC 39/06 2006-10-21 → 2010-07-03 |
| 65 | 1,349 d | Surveys | Scientific mooring, top float 30 meters established in 70-38.9N 127-32.8W The Northwestern Passages | HYDROARC 19/06 2006-10-21 → 2010-07-02 |
| 66 | 1,349 d | Surveys | Subsurface scientific mooring, top float 40 meters established in 70-23.0N 138-08.6W Beaufort Sea | HYDROARC 24/06 2006-10-21 → 2010-07-02 |
| 67 | 1,349 d | Surveys | Scientific mooring, top float 50 meters established in 71-24N 152-00W Beaufort Sea | HYDROARC 37/06 2006-10-21 → 2010-07-02 |
| 68 | 1,349 d | Surveys | Scientific mooring, top float 50 meters established in 75-00.198N 149-52.295W Arctic Ocean | HYDROARC 38/06 2006-10-21 → 2010-07-02 |
| 69 | 1,349 d | Surveys | Scientific mooring established in 86.430N 046.472W | HYDROARC 28/06 2006-10-21 → 2010-07-02 |
| 70 | 1,267 d | Surveys | Underwater operations are in progress off Mauritius until further notice; a two-mile berth is requested. Western Indian Ocean · Mauritius · Indian Ocean | HYDROPAC 630/23 2023-02-24 → 2026-08-14 |
| 71 | 1,218 d | Surveys | Scientific moorings established in: a. 72-47.908N 158-23.880W Arctic Ocean | HYDROARC 1/08 2008-01-18 → 2011-05-21 |
| 72 | 1,193 d | Surveys | Scientific moorings, at depth 183 meters and attached by 530 meter long line, established in: a. 70-52.18N… Arctic · Beaufort Sea · Beaufort Sea | HYDROARC 345/15 2015-10-02 → 2019-01-07 |
| 73 | 1,164 d | Surveys | Scientific mooring established in 89-31.527N 084-22.488E Arctic Ocean | HYDROARC 2/08 2008-04-23 → 2011-07-02 |
| 74 | 1,126 d | Surveys | Scientific moorings established in: 1. 72-10.57N 156-33.18W Arctic Ocean | HYDROARC 1/07 2007-07-13 → 2010-08-13 |
| 75 | 1,105 d | Surveys | Scientific mooring, at depth 61 meters, established in 70-25.94N 139-01.24W Arctic · Beaufort Sea · Beaufort Sea | HYDROARC 343/15 2015-10-01 → 2018-10-11 |
| 76 | 1,101 d | Surveys | Survey operations are underway in the western South Atlantic near Brazil until August 20, with the vessel Ramform Tethys towing twelve 8000-meter cables. Western South Atlantic · Brazil · South Atlantic Ocean | HYDROLANT 1757/23 2023-08-08 → 2026-08-14 |
| 77 | 1,101 d | Surveys | Scientific moorings established in the Chukchi Sea off Alaska at two positions: 68-08.94N 166-01.68W and 68-20.82N 166-53.94W. Chukchi Sea · Alaska · Chukchi Sea | HYDROARC 155/23 2023-08-09 → 2026-08-14 |
| 78 | 1,101 d | Surveys | Scientific moorings are established at 70-43.82N 160-22.05W, 70-40.80N 160-12.69W, and 70-39.28N 160-06.17W in the Chukchi Sea, Alaska. Chukchi Sea · Alaska · Chukchi Sea | HYDROARC 156/23 2023-08-09 → 2026-08-14 |
| 79 | 1,101 d | Surveys | Scientific moorings are established in Beaufort Sea and Chukchi Sea, Alaska at positions 71-18.16N 155-42.37W, 71-22.90N 155-36.16W, 71-24.81N 156-26.47W, 71-27.43N 156-36.35W. Beaufort Sea · Chukchi Sea · Alaska · Beaufort Sea | HYDROARC 157/23 2023-08-09 → 2026-08-14 |
| 80 | 1,088 d | Surveys | A scientific mooring is established in the Kara Sea, Russia at 71-33.88N 072-09.40E until further notice; a 200-meter berth is requested. Kara Sea · Russia · Kara Sea | HYDROARC 178/23 2023-08-22 → 2026-08-14 |
| 81 | 1,049 d | Surveys | Western North Atlantic North Atlantic Ocean | NAVAREA IV 408/14 2014-06-03 → 2017-04-18 |
| 82 | 1,049 d | Surveys | Scientific mooring, at depth 1587 meters established until 30 sep 20 in 08-09.30N 057-07.84W Western North Atlantic · Guyana · North Atlantic Ocean | NAVAREA IV 1083/17 2017-11-16 → 2020-10-01 |
| 83 | 1,046 d | Surveys | A scientific mooring with a top float at 30 meters is located in Lancaster Sound, Canada at 74 degrees 08.75 minutes north, 091 degrees 02.83 minutes west. Lancaster Sound · Canada · The Northwestern Passages | HYDROARC 239/23 2023-10-02 → 2026-08-14 |
| 84 | 1,046 d | Surveys | A scientific mooring with a top float at 30 meters is established in Lancaster Sound, Canada, at 74-27.83N 090-32.81W. Lancaster Sound · Canada · The Northwestern Passages | HYDROARC 240/23 2023-10-02 → 2026-08-14 |
| 85 | 1,024 d | Surveys | A scientific mooring with its top float at 35 meters is established in the Chukchi Sea at 74-31.38N 161-56.54W. Chukchi Sea · Arctic Ocean | HYDROARC 269/23 2023-10-25 → 2026-08-14 |
| 86 | 1,024 d | Surveys | Scientific moorings established at three locations in Beaufort Sea, Alaska; top floats at 15, 20, and 19 meters. Beaufort Sea · Alaska · Arctic Ocean | HYDROARC 270/23 2023-10-25 → 2026-08-14 |
| 87 | 1,009 d | Surveys | In the Persian Gulf off Qatar, survey operations by vessels Allianz, Sedna, and BGP Innovator began 10 November until further notice, requesting 2000 meters berth. Persian Gulf · Qatar · Persian Gulf | HYDROPAC 3536/23 2023-11-09 → 2026-08-14 |
| 88 | 988 d | Surveys | Scientific mooring temporarily established in 68-38.695N 101-44.957W The Northwestern Passages | HYDROARC 6/08 2008-09-05 → 2011-05-21 |
| 89 | 979 d | Surveys | Beaufort Sea Arctic · Canada-north Coast · Beaufort Sea | HYDROARC 158/14 2014-08-01 → 2017-04-07 |
| 90 | 973 d | Surveys | Sub-surface scientific moorings established in: a. 71-36.007N 161-30.011W, at depth 48 meters Arctic · Chukchi Sea · Arctic Ocean | HYDROARC 155/16 2016-08-04 → 2019-04-05 |
| 91 | 963 d | Surveys | Survey operations by the vessel Ramform Titan are underway in the eastern Mediterranean Sea off Egypt, requesting an eight mile berth, since December 27. Eastern Mediterranean Sea · Egypt · Mediterranean Sea - Eastern Basin | HYDROLANT 2939/23 2023-12-25 → 2026-08-14 |
| 92 | 942 d | Surveys | Scientific mooring TU-1 76-00.00N 160-10.00W removed Arctic · Beaufort Sea · Chukchi Sea · Arctic Ocean | HYDROARC 205/16 2016-09-04 → 2019-04-05 |
| 93 | 917 d | Surveys | Survey operations in progress in area bound by: a. 12-30.67N 109-23.32E, 12-30.31N 109-17.44E, 12-29.59N… South China Sea · Vietnam · South China Sea | HYDROPAC 2996/19 2019-09-12 → 2022-03-18 |
| 94 | 917 d | Surveys | Oceanographic equipment is established in the eastern South Pacific at 29-21S 075-11W; previous HYDROPAC 340/24 is canceled. Eastern South Pacific · South Pacific Ocean | HYDROPAC 471/24 2024-02-09 → 2026-08-14 |
| 95 | 917 d | Surveys | Oceanographic equipment established at 33-50S 080-43W near Islas Juan Fernandez; cancels warning 341/24. Eastern South Pacific · Islas Juan Fernandez · South Pacific Ocean | HYDROPAC 472/24 2024-02-09 → 2026-08-14 |
| 96 | 917 d | Surveys | Oceanographic equipment is established in the eastern South Pacific at 28-27.00S 073-11.00W, cancelling warning 339/24. Eastern South Pacific · South Pacific Ocean | HYDROPAC 473/24 2024-02-09 → 2026-08-14 |
| 97 | 917 d | Surveys | Oceanographic equipment is established at 34-30S 074-55W in the eastern South Pacific. Eastern South Pacific · South Pacific Ocean | HYDROPAC 474/24 2024-02-09 → 2026-08-14 |
| 98 | 910 d | Surveys | Survey operations by the vessel Bluebottle are in progress in the Tasman Sea off Australia until further notice; wide berth requested. Tasman Sea · Australia · Tasman Sea | HYDROPAC 553/24 2024-02-16 → 2026-08-14 |
| 99 | 906 d | Surveys | Survey operations are in progress in the eastern South Atlantic by the vessel Ramform Atlas towing twelve 8000-meter cables; an eight-mile berth is requested. Eastern South Atlantic · South Atlantic Ocean | HYDROLANT 360/24 2024-02-20 → 2026-08-14 |
| 100 | 902 d | Surveys | Scientific mooring with top float at 42 meters established at 75-06.02N 168-00.04W in Chukchi Sea. Chukchi Sea · Arctic Ocean | HYDROARC 23/24 2024-02-24 → 2026-08-14 |