| 1 | 5,658 d | Cable ops | Seismic survey in progress by M/V gardline locator within 3 miles of 53-04.0N Leman Gas Field To Deep Water Route | HYDROLANT 2251/83 1983-12-06 → 1999-06-04 |
| 2 | 1,241 d | Cable ops | Pipeline operations are in progress in the Persian Gulf near Bahrain until further notice, wide berth requested. Persian Gulf · Bahrain · Persian Gulf | HYDROPAC 961/23 2023-03-22 → 2026-08-14 |
| 3 | 1,176 d | Cable ops | Pipe laying operations in progress until further notice by M/V global iroquois in area bound by 23-40.6S… South Atlantic Ocean | HYDROLANT 1917/08 2008-11-08 → 2012-01-28 |
| 4 | 1,067 d | Cable ops | Cable operations are in progress until further notice in the Persian Gulf near Iran at 29-19.68N 048-06.18E. Wide berth requested. Persian Gulf · Iran · Persian Gulf | HYDROPAC 2918/23 2023-09-11 → 2026-08-14 |
| 5 | 1,065 d | Cable ops | Cable operations are underway in the Persian Gulf near Bahrain along a trackline, with a 500-meter berth requested; cancels warning 2937/23. Persian Gulf · Bahrain · Persian Gulf | HYDROPAC 2939/23 2023-09-13 → 2026-08-14 |
| 6 | 1,023 d | Cable ops | Cable operations by the cable ship Ile de Re are underway in the Java Sea and Makassar Strait from October 27 until further notice. Java Sea · Makassar Strait · Indonesia · Java Sea | HYDROPAC 3390/23 2023-10-26 → 2026-08-14 |
| 7 | 970 d | Cable ops | Cable operations are in progress in the Ligurian Sea, Tyrrhenian Sea, and Corsica by cableship Responder until further notice; wide berth requested. Ligurian Sea · Tyrrhenian Sea · Corsica · Ligurian Sea | HYDROLANT 2905/23 2023-12-18 → 2026-08-14 |
| 8 | 929 d | Cable ops | Submarine cable operations by the ship Fu Hai are underway in the South China Sea off the Philippines from January 29 until further notice; wide berth requested. South China Sea · Philippines · South China Sea | HYDROPAC 334/24 2024-01-28 → 2026-08-14 |
| 9 | 921 d | Cable ops | Cable operations are in progress in the Caribbean Sea near Aruba by the cable ship Pan Am along several tracks; wide berth is requested. Caribbean Sea · Aruba · Caribbean Sea | NAVAREA IV 127/24 2024-02-05 → 2026-08-14 |
| 10 | 875 d | Cable ops | Cable operations in progress until further notice by the vessel Nexans Skagerrak along a trackline between positions 20-28.32S 114-52.68E and 20-41.52S 115-25.26E. One mile berth requested. Eastern Indian Ocean · Australia · Indian Ocean | HYDROPAC 942/24 2024-03-22 → 2026-08-14 |
| 11 | 841 d | Cable ops | Underwater operations by cable ship Sophie Germain continue in the western Mediterranean off France from April 29 until further notice. Western Mediterranean Sea · France · Mediterranean Sea - Western Basin | HYDROLANT 881/24 2024-04-25 → 2026-08-14 |
| 12 | 835 d | Cable ops | Cable operations are in progress by the cableship Detector along a trackline in the Celtic Sea and English Channel; wide berth requested. Celtic Sea · English Channel · England · Celtic Sea | HYDROLANT 928/24 2024-05-01 → 2026-08-14 |
| 13 | 832 d | Cable ops | Cable operations are in progress by cableship Ile de Sein along a trackline in the Gulf of Guinea, Nigeria; wide berth requested. Gulf of Guinea · Nigeria · Gulf of Guinea | HYDROLANT 950/24 2024-05-04 → 2026-08-14 |
| 14 | 829 d | Cable ops | Cable operations are underway near Guam by cable ship Ile de Brehat until further notice, wide berth requested. Philippine Sea · Western North Pacific · Guam · Philippine Sea | HYDROPAC 1519/24 2024-05-07 → 2026-08-14 |
| 15 | 826 d | Cable ops | Cable operations are in progress by vessel Castorone along a trackline from 20-03.20S 115-28.80E to 19-54.60S 115-12.60E; a one-mile berth is requested. Eastern Indian Ocean · Australia · Indian Ocean | HYDROPAC 1558/24 2024-05-10 → 2026-08-14 |
| 16 | 826 d | Cable ops | Cable operations by cableship Peter Faber began May 10 in the Philippine Sea near Taiwan until further notice; wide berth requested. Philippine Sea · Taiwan · Philippine Sea | HYDROPAC 1561/24 2024-05-10 → 2026-08-14 |
| 17 | 742 d | Cable ops | Seismic survey in progress until further notice by M/V marine countess towing cable vicinity 39-50.9S… Tasman Sea | HYDROPAC 155/06 2006-01-29 → 2008-02-10 |
| 18 | 644 d | Cable ops | Pipeline operations in progress until further notice in area bound by 26-10.23N 050-39.49E, 26-10.21N… Persian Gulf · Bahrain · Persian Gulf | HYDROPAC 2317/21 2021-08-12 → 2023-05-19 |
| 19 | 598 d | Cable ops | Pipeline operations in progress until further notice by M/V skandi hawk in area between 11-39.0N 11-38.0N… South China Sea | HYDROPAC 178/17 2017-01-17 → 2018-09-07 |
| 20 | 561 d | Cable ops | B. 69-17.44N 068-03.60E and 68-51.11N 066-55.09E Arctic · Kara Sea · Kara Sea | HYDROARC 280/13 2013-11-23 → 2015-06-07 |
| 21 | 540 d | Cable ops | Pipeline operations in progress until further notice by barge PLB-648 in 25-34.09N 055-21.69E Persian Gulf · United Arab Emirates · Persian Gulf | HYDROPAC 289/15 2015-01-27 → 2016-07-21 |
| 22 | 516 d | Cable ops | Seismic survey in progress until further notice by M/V western trident towing eight three mile long cables… | HYDROPAC 1533/04 2004-09-25 → 2006-02-23 |
| 23 | 503 d | Cable ops | Seismic survey in progress until further notice by M/V geo celtic towing 12 4000 meter long cables in area… Arctic · Alaska-nortwest Coast | HYDROARC 60/10 2010-08-15 → 2011-12-31 |
| 24 | 497 d | Cable ops | Seismic survey in progress until further notice by M/V pgs apollo, M/V nordic explorer, M/V ocean pearl, M/V… Gulf of Mexico · Gulf of Mexico | NAVAREA IV 72/14 2014-01-31 → 2015-06-12 |
| 25 | 477 d | Cable ops | Cable operations in progress until further notice by M/V tyco decisive, M/V tyco responder, M/V tyco… Caribbean Sea | NAVAREA IV 96/07 2007-04-05 → 2008-07-26 |
| 26 | 468 d | Cable ops | Seismic survey in progress until further notice by M/V duke towing 3.5 mile long cable in area between… | HYDROPAC 561/09 2009-03-17 → 2010-06-28 |
| 27 | 456 d | Cable ops | Seismic survey in progress until further notice by M/V cgg harmattan towing six 6500 meter long cables in… South China Sea | HYDROPAC 1725/07 2007-10-06 → 2009-01-04 |
| 28 | 413 d | Cable ops | Seismic survey in progress until further notice in area between 24-38.75N 24-44.88N and 052-39.02E 052-58.26E Persian Gulf · U.A.E | HYDROPAC 2511/16 2016-08-19 → 2017-10-07 |
| 29 | 406 d | Cable ops | Underwater cable operations 14 may until further notice by cableship tyco responder vicinity of 05-08.70N… North Atlantic Ocean | HYDROLANT 789/07 2007-05-11 → 2008-06-21 |
| 30 | 397 d | Cable ops | Cable operations in progress until further notice by cableship teneo along trackline joining 26-24.70N… Persian Gulf · Bahrain · Persian Gulf | HYDROPAC 166/12 2012-01-19 → 2013-02-19 |
| 31 | 396 d | Cable ops | Underwater pipelines along tracklines joining: a. 27-31.14N 052-34.08E, 27-28.25N 052-33.27E, 26-52.05N… Persian Gulf | HYDROPAC 1492/00 2000-10-09 → 2001-11-09 |
| 32 | 380 d | Cable ops | Seismic survey in progress until further notice by M/V odin explorer towing 3.5 mile long cable in area… Indian Ocean | HYDROPAC 170/07 2007-01-25 → 2008-02-10 |
| 33 | 377 d | Cable ops | Seismic survey operations in progress until further notice by M/V ogs explorer towing 5000 meter long cable… Mozambique Channel | HYDROPAC 729/98 1998-09-18 → 1999-10-01 |
| 34 | 372 d | Cable ops | Cable operations in progress until further notice by M/V magnus in area bound by 08-56-13N 079-31-38W,… Gulf of Panama · Panama · North Pacific Ocean | NAVAREA XII 123/21 2021-03-18 → 2022-03-25 |
| 35 | 372 d | Cable ops | Seismic survey in progress until 01 jun 13 by M/V cgg alize towing 12 8200 meter long cables in area between… Bay of Campeche · Mexico | NAVAREA IV 272/12 2012-05-25 → 2013-06-02 |
| 36 | 364 d | Cable ops | Cable operations in progress until further notice by M/V normand vester between 50-59N 006-18W and 51-40N… Celtic Sea | HYDROLANT 2407/98 1998-12-16 → 1999-12-16 |
| 37 | 362 d | Cable ops | Pipeline buoys along track line between 13-07.40N 059-38.40W and 13-07.08N 059-38.51W Eastern Caribbean Sea · Barbados · Caribbean Sea | NAVAREA IV 1067/16 2016-12-16 → 2017-12-14 |
| 38 | 362 d | Cable ops | Cable operations in progress until further notice along trackline joining 49-03.8N 140-18.7E, 49-03.7N… Sea of Okhotsk · Sakhalin · Kuril Islands · Sea of Okhotsk | HYDROPAC 3561/18 2018-09-28 → 2019-09-25 |
| 39 | 360 d | Cable ops | Seismic survey in progress until futher notice by M/V geo mariner towing 8000 meter long cable in area bound… New Guinea-northwest Coast · South Pacific Ocean | HYDROPAC 1552/11 2011-05-24 → 2012-05-19 |
| 40 | 359 d | Cable ops | Seismic survey in progress until further notice by M/V ocean pioneer in area bound by 38-00S 174-30E, 38-10S… Tasman Sea | HYDROPAC 290/07 2007-02-15 → 2008-02-10 |
| 41 | 353 d | Cable ops | Cable operations in progress until 01 aug 2011 by cableship tyco dependable and cableship pacific guardian… Caribbean Sea · Colombia · Caribbean Sea | NAVAREA IV 345/10 2010-08-13 → 2011-08-02 |
| 42 | 347 d | Cable ops | Underwater operations in progress until further notice by cableship whyalla in 28-16.0S 113-55.5E Eastern Indian Ocean · Australia-southwest Coast · Indian Ocean | HYDROPAC 2878/19 2019-09-02 → 2020-08-14 |
| 43 | 347 d | Cable ops | Seismic survey in progress until further notice by M/V pacific titan towing 6000 meter long cable in area… South Pacific Ocean | HYDROPAC 459/06 2006-03-18 → 2007-02-28 |
| 44 | 339 d | Cable ops | Pipeline operations in progress until 31 dec by M/V BIGFOOT-1 in area bound by 44-25.85N 028-46.19E,… Black Sea · Romania · Black Sea | HYDROLANT 235/21 2021-01-26 → 2022-01-01 |
| 45 | 336 d | Cable ops | Seismic survey in progress until further notice by M/V pacific titan towing 8000 meter long cable in area… | HYDROPAC 2242/06 2006-11-18 → 2007-10-21 |
| 46 | 335 d | Cable ops | Cable operations in progress until further notice by cableship cable retriever vicinity 04-38.1N 106-28.8E South China Sea | HYDROPAC 446/07 2007-03-11 → 2008-02-10 |
| 47 | 331 d | Cable ops | Cable laying operations in progress until 30 jun 17 vicinity of trackline between 24-32-40N 122-06-54E and… Western North Pacific · Philippine Sea · Taiwan-east Coast · Philippine Sea | HYDROPAC 2320/16 2016-08-03 → 2017-07-01 |
| 48 | 327 d | Cable ops | Seismic survey in progress until further notice by M/V c-orion towing eight 6000 meter long cables in area… Bay of Bengal | HYDROPAC 2303/06 2006-11-27 → 2007-10-21 |
| 49 | 316 d | Cable ops | Cable laying operations in progress until further notice along trackline joining 20-13.940N 087-25.060W,… Caribbean Sea | NAVAREA IV 180/08 2008-05-15 → 2009-03-28 |
| 50 | 316 d | Cable ops | Seismic survey in progress until further notice by M/V wg vespucci in area between 18-30S 20-10S and 115-10E… Eastern Indian Ocean · Australia-northwest Coast | HYDROPAC 3949/13 2013-12-20 → 2014-11-01 |
| 51 | 315 d | Cable ops | Seismic survey in progress until 31 jan 15 by M/V ramform titan towing 14 9000 meter long cables in area… Western North Atlantic · Eastern Caribbean Sea · North Atlantic Ocean | NAVAREA IV 200/14 2014-03-22 → 2015-02-01 |
| 52 | 305 d | Cable ops | Cable laying operations in progress until further notice by M/V jcc maritime 1 along tracklines joining: a.… Persian Gulf · U.A.E · Persian Gulf | HYDROPAC 3898/16 2016-12-15 → 2017-10-16 |
| 53 | 304 d | Cable ops | Seismic survey in progress until further notice by M/V akademik lazarev towing 8500 meter long cable in area… North Sea | HYDROLANT 597/07 2007-04-11 → 2008-02-09 |
| 54 | 303 d | Cable ops | Cable operations 120001Z mar until further notice by cableship raymond croze within two miles of 32-05.0N… Mediterranean Sea - Eastern Basin | HYDROLANT 886/00 2000-03-10 → 2001-01-08 |
| 55 | 300 d | Cable ops | Underwater cable operations in progress until further notice by M/V jonathan chouest in area bound by 25-41N… Persian Gulf | HYDROPAC 609/98 1998-08-07 → 1999-06-04 |
| 56 | 299 d | Cable ops | Seismic survey 061200Z may until further notice by M/V pacific titan towing 6000 meter long cable in area… Tasman Sea | HYDROPAC 831/06 2006-05-05 → 2007-02-28 |
| 57 | 297 d | Cable ops | Cable laying operations in progress until further notice by barge regina 250 in vicinity of tracklines… Persian Gulf · U.A.E · Persian Gulf | HYDROPAC 3882/16 2016-12-13 → 2017-10-07 |
| 58 | 296 d | Cable ops | Cable operations in progress from 22 mar until further notice by cableship acergy orion vicinity of… Gulf of Guinea | HYDROLANT 442/07 2007-03-19 → 2008-01-10 |
| 59 | 295 d | Cable ops | Cable laying operations in progress until further notice along trackline joining 44-58.38N 036-54.72E,… Black Sea · Black Sea | HYDROLANT 2383/14 2014-10-02 → 2015-07-25 |
| 60 | 294 d | Cable ops | Seismic survey in progress until 31 oct by M/V geo caribbean, M/V geo celtic, M/V viking 1, M/V geowave… Gulf of Mexico | NAVAREA IV 25/14 2014-01-10 → 2014-11-01 |
| 61 | 294 d | Cable ops | Seismic survey in progress until further notice by M/V zephyr 1 towing 8500 meter long cable in area bound… South China Sea | HYDROPAC 1916/07 2007-11-02 → 2008-08-23 |
| 62 | 283 d | Cable ops | Seismic survey in progress until further notice by M/V ramform viking towing four mile long cable in area… South China Sea | HYDROPAC 151/01 2001-01-30 → 2001-11-09 |
| 63 | 282 d | Cable ops | Cable operations in progress until further notice along trackline joining 25-37.5N 051-32.8E, 25-40.5N… Persian Gulf · Qatar · Persian Gulf | HYDROPAC 1004/11 2011-03-30 → 2012-01-07 |
| 64 | 281 d | Cable ops | Seismic survey in progress until further notice by M/V nordic explorer towing six three mile long cables in… | HYDROPAC 2034/05 2005-12-02 → 2006-09-10 |
| 65 | 281 d | Cable ops | Pipelaying operations in progress until further notice by cableship appache along trackline between 57-05N… North Sea | HYDROLANT 777/05 2005-04-26 → 2006-02-01 |
| 66 | 279 d | Cable ops | Cable operations in progress until further notice by cableship hannibal in area between 36-51.43N 36-47.43N… Tunisia-northeast Coast | HYDROLANT 180/10 2010-01-29 → 2010-11-04 |
| 67 | 274 d | Cable ops | Underwater cable operations in progress until further notice by M/V jonathan chouest towing two 15 kilometer… Persian Gulf | HYDROPAC 425/98 1998-06-11 → 1999-03-13 |
| 68 | 272 d | Cable ops | Seismic survey and cable laying operations 01 nov thru 31 jul 14 in area bound by 24-47.91N 053-19.02E,… Southern Persian Gulf · U.A.E · Persian Gulf | HYDROPAC 3406/13 2013-11-01 → 2014-08-01 |
| 69 | 270 d | Cable ops | Seismic survey in progress until further notice by M/V adams aquanaut towing 12 12000 meter long cables in… Persian Gulf · Persian Gulf | HYDROPAC 130/11 2011-01-12 → 2011-10-10 |
| 70 | 269 d | Cable ops | Seismic survey in progress until further notice by M/V professor polshkov uais towing 6500 meter long cable… Black Sea | HYDROLANT 879/05 2005-05-10 → 2006-02-03 |
| 71 | 268 d | Cable ops | Seismic survey in progress until further notice by M/V polarcus adira in area bound by 26-51.3N 089-44.6W,… Gulf of Mexico · Gulf of Mexico | NAVAREA IV 829/14 2014-10-03 → 2015-06-28 |
| 72 | 267 d | Cable ops | Seismic survey in progress until further notice by M/V bgp pioneer towing seven mile long cable in area… Gulf of Mexico · Mexico · Gulf of Mexico | NAVAREA IV 561/15 2015-07-10 → 2016-04-03 |
| 73 | 267 d | Cable ops | Pipeline operations in progress until further notice by barge hd 423 along trackline joining 25-57.57N… Persian Gulf · Qatar-northeast Coast · Persian Gulf | HYDROPAC 1456/12 2012-05-24 → 2013-02-15 |
| 74 | 266 d | Cable ops | Seismic survey in progress until further notice by M/V cgg symphony towing six 5.5 mile long cables in area… | NAVAREA IV 351/02 2002-09-13 → 2003-06-06 |
| 75 | 265 d | Cable ops | Cable laying operations in progress until 30 jun 15 vicinity of tracklines between: a. 23-35.2N 119-30.3E… East China Sea · Taiwan Strait · South China Sea | HYDROPAC 2993/14 2014-10-08 → 2015-07-01 |
| 76 | 263 d | Cable ops | Seismic survey 16 apr thru 30 dec by M/V iskatel in area bound by 44-51N 035-53E, 45-00N 036-10E, 45-05N… Black Sea | HYDROLANT 1125/01 2001-04-11 → 2001-12-31 |
| 77 | 263 d | Cable ops | Seismic survey in progress until further notice by M/V stm markab in 13-53S 128-29E Timor Sea | HYDROPAC 981/04 2004-06-12 → 2005-03-02 |
| 78 | 263 d | Cable ops | Pipeline operations in progress until further notice in area bound by 26-09.95N 050-39.59E, 26-09.97N… Persian Gulf · Bahrain · Persian Gulf | HYDROPAC 3446/20 2020-11-22 → 2021-08-12 |
| 79 | 262 d | Cable ops | Seismic survey operations in progress until further notice by M/V pejwak towing a six kilometer long cable… | HYDROPAC 721/98 1998-09-14 → 1999-06-04 |
| 80 | 258 d | Cable ops | Seismic survey in progress until further notice by M/V pehlivan in area bound by 41-58N 028-02E, 41-58N… Black Sea | HYDROLANT 1755/06 2006-09-27 → 2007-06-12 |
| 81 | 257 d | Cable ops | Underwater operations in progress until further notice by cableship leon thevenin vicinity 51-03.4N 004-46.8W Celtic Sea | HYDROLANT 200/07 2007-02-06 → 2007-10-21 |
| 82 | 254 d | Cable ops | Cable laying operations 10 aug until further notice by cableship ile de sein along trackline joining… Chukchi Sea · Bering Strait · Alaska · Chukchi Sea | NAVAREA XII 251/16 2016-08-07 → 2017-04-18 |
| 83 | 253 d | Cable ops | Underwater operations in progress until further notice by cableship ile de re in area between 01-44.0N… | HYDROPAC 1513/06 2006-08-10 → 2007-04-21 |
| 84 | 253 d | Cable ops | Cable repair operations in progress until further notice by M/V tyco responder vicinity 20-37.3N 087-03.1W Caribbean Sea | NAVAREA IV 248/08 2008-06-26 → 2009-03-07 |
| 85 | 251 d | Cable ops | Seismic survey in progress until 31 aug 09 by M/V atlantic explorer towing six 7500 meter long cables in… Gulf of Mexico | NAVAREA IV 513/08 2008-12-23 → 2009-09-01 |
| 86 | 250 d | Cable ops | Cable operations in progress until further notice vicinity of trackline joining 48-14.62N 141-17.09E,… Sea of Japan · Japan Sea | HYDROPAC 1958/15 2015-06-16 → 2016-02-21 |
| 87 | 249 d | Cable ops | Seismic survey 11 aug until further notice by M/V geo explorer in area bound by 07-00N 118-30E, 07-00N… Sulu Sea | HYDROPAC 1502/08 2008-08-06 → 2009-04-12 |
| 88 | 248 d | Cable ops | Seismic survey in progress until further notice by M/V pacific sword towing cable vicinity 21-29S 114-00E Indian Ocean | HYDROPAC 264/07 2007-02-10 → 2007-10-17 |
| 89 | 248 d | Cable ops | Seismic survey in progress until 30 jun 06 by M/V nan hai 502 in area bound by 08-55N 117-00E, 08-55N… South China Sea | HYDROPAC 1791/05 2005-10-25 → 2006-07-01 |
| 90 | 247 d | Cable ops | Seismic survey in progress until further notice by M/V stm markab in 13-53S 128-29E Timor Sea | HYDROPAC 1076/04 2004-06-27 → 2005-03-02 |
| 91 | 244 d | Cable ops | Seismic survey in progress until further notice by M/V cgg fohn towing six 6000 meter long cables in area… Persian Gulf | HYDROPAC 1013/07 2007-06-10 → 2008-02-10 |
| 92 | 242 d | Cable ops | Nga chart 24240 (5TH ed) Brazil-north Coast · South Atlantic Ocean | HYDROLANT 154/10 2010-01-25 → 2010-09-25 |
| 93 | 239 d | Cable ops | Seismic survey in progress until further notice by M/V pacific titan towing two 5000 meter long cables in… Ceram Sea | HYDROPAC 2266/09 2009-12-02 → 2010-07-30 |
| 94 | 239 d | Cable ops | Seismic survey in progress until further notice by M/V western trident towing eight 3.5 meter long cables in… | HYDROPAC 381/05 2005-03-02 → 2005-10-27 |
| 95 | 237 d | Cable ops | Seismic survey in progress until further notice by M/V yeoman towing 1200 meter long cable in area bound by… Mediterranean Sea - Eastern Basin | HYDROLANT 1077/05 2005-06-09 → 2006-02-01 |
| 96 | 231 d | Cable ops | Seismic survey in progress until further notice by M/V pacific titan towing 6000 meter long streamers in… Tasman Sea | HYDROPAC 391/07 2007-03-03 → 2007-10-21 |
| 97 | 226 d | Cable ops | Cable operations 04 sep until further notice by cableship rene descartes along trackline joining 43-56.18N… North Pacific · California · North Pacific Ocean | NAVAREA XII 397/20 2020-09-01 → 2021-04-15 |
| 98 | 225 d | Cable ops | Cable operations in progress until further notice by cableship normand pacific in 36-22.13N 023-05.25E Aegean Sea · Aegean Sea | HYDROLANT 3852/20 2020-12-14 → 2021-07-28 |
| 99 | 223 d | Cable ops | Underwater cable operations 22 sep until further notice by cableship ile de batz and cableship ile de re… North Atlantic Ocean | NAVAREA IV 365/02 2002-09-21 → 2003-05-03 |
| 100 | 222 d | Cable ops | Seismic survey in progress until further notice by M/V western trident towing eight four mile long cables in… South China Sea | HYDROPAC 725/05 2005-05-01 → 2005-12-09 |