| 1 | 974 d | Surveys | Underwater operations are in progress by vessels Bourbon Calm and Bourbon Sapphire in the Western North Atlantic; wide berth requested. Western North Atlantic · North Atlantic Ocean | NAVAREA IV 12/24 2024-01-03 |
| 2 | 625 d | Surveys | Four scientific moorings established in Beaufort and Chukchi Seas off Alaska at various positions and depths. Beaufort Sea · Chukchi Sea · Alaska · Arctic Ocean | HYDROARC 283/24 2024-12-17 |
| 3 | 612 d | Surveys | Underwater operations in the Black Sea off Romania from 5 January 2025 to 31 December 2026, wide berth requested. Black Sea · Romania · Black Sea | HYDROLANT 2607/24 2024-12-30 |
| 4 | 467 d | Surveys | Underwater operations are underway by vessel HYSY289 in the Persian Gulf off Qatar, within coordinates 26-41.99N 051-53.26E to 26-37.70N 051-53.23E, wide berth requested. Persian Gulf · Qatar · Persian Gulf | HYDROPAC 1357/25 2025-05-24 |
| 5 | 416 d | Surveys | A scientific mooring at seven meters depth is established in Bering Strait, Russia, at 66-19.56N 168-57.08W. Bering Strait · Russia · Bering Sea | HYDROPAC 1795/25 2025-07-14 |
| 6 | 416 d | Surveys | Scientific moorings are established at 15 meters depth in Bering Strait, Alaska, at coordinates 65-46.86N 168-34.07W and 65-44.76N 168-15.75W. Bering Strait · Alaska · Bering Sea | NAVAREA XII 422/25 2025-07-14 |
| 7 | 279 d | Surveys | Underwater survey operations by vessel Fugro Vaquita off Brazil daily from 10:00 to 20:00 UTC until November 2, 2026; wide berth requested. South Atlantic · Brazil · South Atlantic Ocean | HYDROLANT 2010/25 2025-11-28 |
| 8 | 247 d | Surveys | Survey operations by three vessels in the Black Sea off Turkey from January 1 to September 8, 2026, in a bounded area. Five mile berth requested. Black Sea · Turkey · Black Sea | HYDROLANT 2243/25 2025-12-30 |
| 9 | 246 d | Surveys | Underwater operations by vessel Aldemir Souza Tide continue until 31 Dec 2026 in the North Atlantic; wide berth requested. North Atlantic · North Atlantic Ocean | NAVAREA IV 1430/25 2025-12-31 |
| 10 | 246 d | Surveys | Survey operations by vessel BOS PRINCESS continue until 31 Dec 2026 off Guyana; wide berth requested. North Atlantic · Guyana · North Atlantic Ocean | NAVAREA IV 1431/25 2025-12-31 |
| 11 | 219 d | Surveys | A survey vessel in Makassar Strait, Indonesia, is towing twelve 10,050-meter cables until further notice; wide berth requested. Makassar Strait · Indonesia · Makassar Strait | HYDROPAC 241/26 2026-01-27 |
| 12 | 216 d | Surveys | Survey operations by vessel Halul 41 are in progress in the Persian Gulf near Qatar until further notice; wide berth requested. Persian Gulf · Qatar · Persian Gulf | HYDROPAC 292/26 2026-01-30 |
| 13 | 212 d | Surveys | Survey operations by vessel Fugro Brasilis are ongoing until 31 December 2026 off Guyana; wide berth requested. North Atlantic · Guyana · North Atlantic Ocean | NAVAREA IV 98/26 2026-02-03 |
| 14 | 188 d | Surveys | A yellow scientific buoy flashing every 20 seconds is established at 27-24.38S 047-15.92W off Brazil until 25 August. South Atlantic · Brazil · South Atlantic Ocean | HYDROLANT 397/26 2026-02-27 |
| 15 | 158 d | Surveys | Special purpose vessel Safe Boreas is supporting underwater operations in a bounded area; 2.5 nautical mile clearance requested. Indian Ocean | AUSCOAST 120/26 2026-03-29 |
| 16 | 158 d | Surveys | 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 · Indian Ocean | HYDROPAC 957/26 2026-03-29 |
| 17 | 133 d | Surveys | Underwater operations in the Sea of Okhotsk, Russia, run from 1 May to 31 October; wide berth requested. Sea of Okhotsk · Russia · Sea of Okhotsk | HYDROPAC 1291/26 2026-04-23 |
| 18 | 105 d | Surveys | Underwater operations by vessel Fugro Vaquita continue until August 31st in the South Atlantic off Brazil, wide berth requested. South Atlantic · Brazil · South Atlantic Ocean | HYDROLANT 985/26 2026-05-21 |
| 19 | 104 d | Surveys | Underwater operations are active in the Sea of Okhotsk, Russia, from 25 May through 31 December; wide berth requested. Sea of Okhotsk · Russia · Sea of Okhotsk | HYDROPAC 1516/26 2026-05-22 |
| 20 | 100 d | Surveys | Underwater operations by vessel Normand Navigator continue near Suriname from June 1 to August 31, requesting one mile berth. North Atlantic · Suriname · North Atlantic Ocean | NAVAREA IV 496/26 2026-05-26 |
| 21 | 99 d | Surveys | Survey operations continue until August 31, 2200 UTC in the South Atlantic off Brazil; wide berth requested. South Atlantic · Brazil · South Atlantic Ocean | HYDROLANT 1021/26 2026-05-27 |
| 22 | 98 d | Surveys | Twenty-one yellow light buoys with scientific equipment are deployed in an area bounded by 09-51S to 10-36S and 129-58E to 128-43E; mariners should navigate with caution. Timor Sea | AUSCOAST 202/26 2026-05-28 |
| 23 | 92 d | Surveys | 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 | NAVAREA III 86/26 2026-06-03 |
| 24 | 89 d | Surveys | 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 · North Atlantic Ocean | NAVAREA IV 539/26 2026-06-05 |
| 25 | 85 d | Surveys | 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. North Atlantic Ocean | NAVAREA IV 551/26 2026-06-09 |
| 26 | 85 d | Surveys | Survey operations are underway until 16 November by vessel SeaQuest in an area near 58°W 07°N, wide berth requested. North Atlantic Ocean | NAVAREA IV 552/26 2026-06-09 |
| 27 | 80 d | Surveys | Underwater operations by vessel Normand Navigator continue until 31 Dec near Guyana, wide berth requested. North Atlantic · Guyana · North Atlantic Ocean | NAVAREA IV 586/26 2026-06-15 |
| 28 | 80 d | Surveys | Survey operations by vessels Island Pride, Sanco Swift, and Olympic Artemis are underway until September 15 in the Gulf of America; wide berth requested. Gulf of America · Gulf of Mexico | NAVAREA IV 587/26 2026-06-15 |
| 29 | 78 d | Surveys | Underwater operations by vessel Fugro Vaquita are in progress until 140001Z November, with wide berth requested; cancels HYDROLANT 1157/26. South Atlantic Ocean | HYDROLANT 1160/26 2026-06-17 |
| 30 | 77 d | Surveys | Survey operations by vessel Ordovik towing a 9,000-meter cable continue in the Bering Sea off Russia until 15 September, requesting a five-mile berth. Bering Sea · Russia | HYDROPAC 1768/26 2026-06-18 |
| 31 | 72 d | Surveys | Survey operations by vessel BGP Prospector continue in the North Atlantic near Guyana until November 15, with wide berth requested. North Atlantic · Guyana · North Atlantic Ocean | NAVAREA IV 615/26 2026-06-23 |
| 32 | 71 d | Surveys | Survey operations by vessel Moonrise G continue in Guyana waters until November 15; wide berth requested. North Atlantic · Guyana · North Atlantic Ocean | NAVAREA IV 616/26 2026-06-23 |
| 33 | 71 d | Surveys | Underwater operations by vessel Prinsengracht continue in Guyana until 31 Dec; wide berth requested. North Atlantic · Guyana · North Atlantic Ocean | NAVAREA IV 621/26 2026-06-24 |
| 34 | 62 d | Surveys | Survey operations are in progress by vessel Ramform Atlas towing long cables in the North Sea off Norway; a three-mile berth is requested. North Sea · Norway · Norwegian Sea | HYDROLANT 1297/26 2026-07-03 |
| 35 | 59 d | Surveys | Drilling operations by the Fatih platform with supporting vessels are ongoing in the Black Sea from 6 July to 24 September 2026. Black Sea · Black Sea | NAVAREA III 105/26 2026-07-06 |
| 36 | 51 d | Surveys | Survey vessel Shark 1 is conducting hydrographic survey between 11-30 S and 12-22 S, 125-05 E and 126-01 E, and 2 nautical miles clearance is requested. Timor Sea | AUSCOAST 243/26 2026-07-14 |
| 37 | 51 d | Surveys | Survey operations by vessel Shark 1 are in progress in the Timor Sea until further notice, with a two-mile berth requested. Timor Sea · Timor Sea | HYDROPAC 2011/26 2026-07-14 |
| 38 | 51 d | Surveys | 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 · Sea of Okhotsk | HYDROPAC 2014/26 2026-07-14 |
| 39 | 44 d | Surveys | Survey operations are underway until 31 December near Guyana by vessel AHT DN87 and tug TELESTO; wide berth requested. North Atlantic · Guyana · North Atlantic Ocean | NAVAREA IV 705/26 2026-07-20 |
| 40 | 36 d | Surveys | Survey vessel PMG Emerald is conducting operations in an area bounded by 15-26.25 S to 20-57.00 S and 167-08.20 E to 169-17.00 E, requesting 2.5 nautical miles clearance. Coral Sea | NAVAREA X 87/26 2026-07-28 |
| 41 | 36 d | Surveys | Survey operations are underway in the Coral Sea near Vanuatu by the vessel PMG Emerald, requesting a three-mile berth, until further notice. Coral Sea · South Pacific · Vanuatu · Coral Sea | HYDROPAC 2168/26 2026-07-28 |
| 42 | 35 d | Surveys | Survey operations are underway in the Kara Sea, Russia, until September 30, wide berth requested. Kara Sea · Russia · Kara Sea | HYDROARC 152/26 2026-07-30 |
| 43 | 33 d | Surveys | Special purpose vessel Bhagwan Dryden is conducting underwater operations at position 20-06.96S 116-26.11E, requesting 2.5 nautical miles clearance. Indian Ocean | AUSCOAST 260/26 2026-08-01 |
| 44 | 33 d | Surveys | Underwater operations by the vessel Bhagwan Dryden at 20-06.96S 116-26.11E in the Eastern Indian Ocean, Australia, request a three-mile berth. Eastern Indian Ocean · Australia · Indian Ocean | HYDROPAC 2203/26 2026-08-01 |
| 45 | 30 d | Surveys | Survey operations by vessel Furgo Proteus are underway in Persian Gulf near Qatar until 05 Sep, with a two-mile berth requested. Persian Gulf · Qatar · Persian Gulf | HYDROPAC 2232/26 2026-08-04 |
| 46 | 29 d | Surveys | Survey operations in progress in Timor Sea off Australia by vessel SW BLY towing twelve 7300-meter cables, seven-mile berth requested. Timor Sea · Australia · Timor Sea | HYDROPAC 2241/26 2026-08-05 |
| 47 | 28 d | Surveys | Drill rig JANSZ is at position 19-52.73S 114-36.50E, requesting a 2.5 nautical mile clearance. Indian Ocean | AUSCOAST 267/26 2026-08-05 |
| 48 | 28 d | Surveys | 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 · South China Sea | HYDROPAC 2249/26 2026-08-06 |
| 49 | 25 d | Surveys | A list of mobile oil rigs and drill ships in the Gulf of Guinea, Pointe Noire, Sierra Leone, is provided as of August 26, 0916 UTC. Gulf of Guinea, Pointe Noire, Sierra Leone · Rig List · Gulf of Guinea | NAVAREA II 299/26 2026-08-09 |
| 50 | 25 d | Surveys | Survey operations by vessel Vision 2 in Persian Gulf, Kuwait, from 10 August until further notice. Wide berth requested. Persian Gulf · Kuwait · Persian Gulf | HYDROPAC 2280/26 2026-08-09 |
| 51 | 24 d | Surveys | 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. Indian Ocean | AUSCOAST 270/26 2026-08-10 |
| 52 | 24 d | Surveys | 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 · Indian Ocean | HYDROPAC 2288/26 2026-08-10 |
| 53 | 23 d | Surveys | In the Black Sea, drilling operations by the Yildirim rig occur from 11 August 2026 to 25 September 2026; a 10 nautical mile berth is requested. Black Sea · Black Sea | NAVAREA III 121/26 2026-08-11 |
| 54 | 20 d | Surveys | 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 · North Atlantic Ocean | NAVAREA IV 831/26 2026-08-13 |
| 55 | 17 d | Surveys | Drill rig Transocean Endurance is at position 19-31.18S 116-06.65E, requesting 2.5 nautical miles clearance. Indian Ocean | AUSCOAST 275/26 2026-08-16 |
| 56 | 17 d | Surveys | 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 · Black Sea | NAVAREA III 122/26 2026-08-17 |
| 57 | 17 d | Surveys | Drilling operations by KANUNI platform in Black Sea from 18 Aug 26 to 07 Oct 26, 10 nautical mile wide berth requested. Black Sea · Black Sea | NAVAREA III 123/26 2026-08-17 |
| 58 | 17 d | Surveys | A corrected list of drilling rigs in the North Sea, Norwegian Sea, and west of Great Britain as of August 17, 2026, with safety zones. Riglist · North Sea | NAVAREA I 173/26 2026-08-17 |
| 59 | 17 d | Surveys | Drill rig Transocean Equinox is located at 38-46.20S 142-48.80E, with 2.5 nautical miles clearance requested. Great Australian Bight | AUSCOAST 277/26 2026-08-17 |
| 60 | 15 d | Surveys | Special purpose vessel Fugro Kwilena is conducting underwater operations in area from 19-47.68S 115-12.91E to 19-57.87S 115-25.37E, requesting 1.5 nautical mile clearance. Indian Ocean | AUSCOAST 279/26 2026-08-19 |
| 61 | 14 d | Surveys | 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. Bass Strait | AUSCOAST 280/26 2026-08-20 |
| 62 | 9 d | Surveys | Offshore drilling rig Valaris Renaissance at 04-56.47 North 004-30.37 West in the Gulf of Guinea requests a wide berth. Gulf of Guinea · Offshore Structures · Gulf of Guinea | NAVAREA II 308/26 2026-08-25 |
| 63 | 9 d | Surveys | Survey operations are in progress near Trinidad and Tobago until September 1, 2026, by vessel Ocean Intervention II; a 500-meter berth is requested. North Atlantic · North Atlantic Ocean | NAVAREA IV 827/26 2026-08-25 |
| 64 | 8 d | Surveys | Survey operations by vessel Aleksandr Rogotskiy are in progress in the Bering Strait until 10 September, wide berth requested. Bering Sea · Bering Strait · Russia · Bering Sea | HYDROPAC 2436/26 2026-08-26 |
| 65 | 7 d | Surveys | 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 · Black Sea | NAVAREA III 128/26 2026-08-27 |
| 66 | 7 d | Surveys | Underwater operations by vessel Seven Seas near Trinidad and Tobago until 052200 UTC December, 500 meter berth requested. North Atlantic · North Atlantic Ocean | NAVAREA IV 832/26 2026-08-27 |
| 67 | 7 d | Surveys | Survey operations by vessel Delta Skipper are underway near Trinidad and Tobago until September 2 at 18:00, requesting a 500 meter berth. North Atlantic · North Atlantic Ocean | NAVAREA IV 833/26 2026-08-27 |
| 68 | 6 d | Surveys | Survey operations in Norwegian Sea by Amazon Conqueror towing twelve 10,000-meter cables, seven mile berth requested. Norwegian Sea · Norwegian Sea | HYDROARC 191/26 2026-08-28 |
| 69 | 0 d | Surveys | Special purpose vessel Skandi Hercules is conducting underwater operations at 19-38.90S 115-55.60E, requesting 5 nautical miles clearance. Indian Ocean | AUSCOAST 288/26 2026-09-03 |
| 70 | 0 d | Surveys | Special purpose vessel Lodbrog is conducting underwater operations in an area near 31.49 S, 115.18 E, requesting 1 nautical mile clearance. Indian Ocean | AUSCOAST 289/26 2026-09-03 |