Quakes · South Pacific Ocean 11 33.6 3 30 — Cable ops · North Atlantic Ocean 7 154.3 10 124 — Quakes · South Atlantic Ocean 5 15.7 1 30 — Missiles · North Atlantic Ocean 4 58.1 4 16 — Spills · North Pacific Ocean 4 56 1 43 — Nav aids · South Atlantic Ocean long running 3 1,012.6 30 449 — Nav aids · North Pacific Ocean long running 3 199.5 9 816 — Nav aids · Caribbean Sea long running 2 1,071.3 37 1,230 — Nav aids · North Atlantic Ocean long running 2 446.8 16 915 — Surveys · North Atlantic Ocean 2 270.2 10 179 — Nav aids · Gulf of Mexico long running 2 264 10 1,185 — Cable ops · Persian Gulf long running 2 143.7 6 466 — Nav aids · Arabian Sea long running 2 112 5 977 — Spills · North Atlantic Ocean long running 2 75 2 710 — Surveys · Caribbean Sea 2 71.5 3 53 — Spills · Gulf of Mexico 2 43 2 44 — Quakes · Coral Sea 2 36 1 221 — Spills · The Coastal Waters of Southeast Alaska and British Columbia 2 24 1 24 — Quakes · Indian Ocean 2 8.7 0 — — Quakes · North Atlantic Ocean 2 6 0 — — Other · Gulf of Mexico 1 251.7 9 45 — Wrecks · North Atlantic Ocean 1 152 6 256 — Nav aids · Andaman or Burma Sea long running 1 144.6 5 419 — Wrecks · South Atlantic Ocean 1 135.9 5 242 — Wrecks · North Pacific Ocean long running 1 44 2 555 — Incidents · North Atlantic Ocean 1 24 1 23 — Surveys · Sea of Okhotsk 1 19.1 1 19 — Spills · Bering Sea 1 14 0 — — Spills · Gulf of Alaska 1 13 1 13 — Icebergs · Labrador Sea 1 11.2 1 11 — Quakes · Philippine Sea 1 3.7 0 — — Quakes · Bay of Bengal 1 3 0 — — Quakes · Caribbean Sea 1 3 0 — — Quakes · Japan Sea 1 3 0 — — Quakes · Molukka Sea 1 3 0 — — Quakes · North Pacific Ocean 1 3 0 — — Quakes · Sea of Okhotsk 1 3 0 — — Quakes · Solomon Sea 1 3 0 — — Quakes · Southern Ocean 1 3 0 — — Surveys · Black Sea 1 2.4 1 66 — Nav aids · South Pacific Ocean long running 0 330 11 829 — Volcanic · Philippine Sea long running 0 300 10 1,290 — Wrecks · Arabian Sea long running 0 240 8 411 — Other · Caribbean Sea long running 0 210 7 487 — Surveys · Indian Ocean long running 0 210 7 492 — Surveys · South Pacific Ocean 0 210 7 142 — Surveys · The Northwestern Passages long running 0 210 7 681 — Wrecks · Persian Gulf long running 0 180 6 865 — Surveys · South Atlantic Ocean 0 180 6 327 — Nav aids · South China Sea 0 180 6 209 — Wrecks · The Northwestern Passages long running 0 180 6 1,032 — Mines · Black Sea long running 0 120 4 857 — Wrecks · Caribbean Sea long running 0 120 4 476 — Nav aids · English Channel 0 120 4 240 — Exercises · Aegean Sea 0 90 3 178 — Surveys · Arctic Ocean 0 90 3 249 — Nav aids · Bay of Biscay long running 0 90 3 702 — Ordnance · Bay of Biscay long running 0 90 3 377 — Nav aids · Beaufort Sea long running 0 90 3 689 — Nav aids · Bering Sea long running 0 90 3 555 — Nav aids · Celtic Sea 0 90 3 293 — Nav aids · Indian Ocean 0 90 3 312 — Surveys · Persian Gulf long running 0 90 3 681 — Cable ops · Philippine Sea 0 90 3 54 — Wrecks · South China Sea long running 0 90 3 1,942 — Wrecks · South Pacific Ocean long running 0 90 3 454 — Surveys · Timor Sea 0 90 3 120 — Nav aids · Arafura Sea 0 60 2 54 — Wrecks · Bay of Bengal 0 60 2 340 — Other · Bay of Biscay long running 0 60 2 529 — Exercises · Black Sea long running 0 60 2 830 — War risk · Black Sea long running 0 60 2 831 — Spills · Caribbean Sea 0 60 2 136 — Surveys · Chukchi Sea 0 60 2 326 — Wrecks · Coral Sea long running 0 60 2 730 — Nav aids · Gulf of Alaska 0 60 2 118 — Nav aids · Hudson Strait 0 60 2 352 — Cable ops · Indian Ocean 0 60 2 100 — Other · Indian Ocean 0 60 2 166 — Nav aids · Irish Sea and St. George's Channel 0 60 2 203 — Surveys · Kara Sea long running 0 60 2 706 — Wrecks · Kara Sea 0 60 2 257 — Nav aids · Laccadive Sea long running 0 60 2 381 — Surveys · Mediterranean Sea - Western Basin 0 60 2 67 — Other · North Atlantic Ocean 0 60 2 68 — Other · North Pacific Ocean 0 60 2 68 — Towing · North Pacific Ocean 0 60 2 96 — Volcanic · North Pacific Ocean 0 60 2 181 — Nav aids · North Sea 0 60 2 90 — Nav aids · Persian Gulf long running 0 60 2 768 — Other · Persian Gulf long running 0 60 2 500 — Cable ops · Sulu Sea 0 60 2 105 — Surveys · Arabian Sea 0 52.8 0 — — Surveys · Gulf of Mexico 0 45 1 333 — Cable ops · Celtic Sea 0 33 1 60 — Missiles · Aegean Sea 0 30 1 166 — Wrecks · Arafura Sea 0 30 1 171 — Nav aids · Arctic Ocean 0 30 1 261 — Derelicts · Bass Strait 0 30 1 79 — Surveys · Bass Strait 0 30 1 51 — Other · Bay of Bengal 0 30 1 330 — Surveys · Bay of Bengal 0 30 1 60 — Debris · Bay of Biscay long running 0 30 1 662 — Wrecks · Bay of Biscay 0 30 1 33 — Other · Beaufort Sea 0 30 1 79 — Surveys · Beaufort Sea 0 30 1 326 — Other · Black Sea 0 30 1 89 — Cable ops · Caribbean Sea 0 30 1 146 — Exercises · Caribbean Sea 0 30 1 282 — Nav aids · Coral Sea 0 30 1 52 — Wrecks · Eastern China Sea 0 30 1 338 — Wrecks · English Channel 0 30 1 74 — Nav aids · Gulf of California long running 0 30 1 807 — Cable ops · Gulf of Guinea 0 30 1 57 — Exercises · Gulf of Mexico 0 30 1 45 — Wrecks · Gulf of Mexico long running 0 30 1 840 — Nav aids · Gulf of Oman 0 30 1 84 — Wrecks · Gulf of Suez 0 30 1 163 — Wrecks · Hudson Bay 0 30 1 348 — Restricted · Indian Ocean 0 30 1 107 — Other · Irish Sea and St. George's Channel 0 30 1 69 — Surveys · Irish Sea and St. George's Channel 0 30 1 73 — Wrecks · Irish Sea and St. George's Channel 0 30 1 59 — Cable ops · Java Sea 0 30 1 248 — Surveys · Laccadive Sea long running 0 30 1 869 — Wrecks · Laccadive Sea long running 0 30 1 499 — Cable ops · Ligurian Sea 0 30 1 195 — Nav aids · Mediterranean Sea - Eastern Basin long running 0 30 1 1,124 — Other · Mediterranean Sea - Eastern Basin 0 30 1 69 — Surveys · Mediterranean Sea - Eastern Basin 0 30 1 188 — Cable ops · Mediterranean Sea - Western Basin 0 30 1 66 — Structures · Mozambique Channel long running 0 30 1 488 — Derelicts · North Atlantic Ocean 0 30 1 243 — Missiles · North Pacific Ocean long running 0 30 1 488 — Surveys · Norwegian Sea 0 30 1 65 — Nav aids · Philippine Sea 0 30 1 192 — Cable ops · South China Sea 0 30 1 154 — Surveys · South China Sea 0 30 1 54 — Nav aids · Tasman Sea 0 30 1 55 — Surveys · Tasman Sea 0 30 1 135 — Nav aids · The Coastal Waters of Southeast Alaska and British Columbia long running 0 30 1 476 — Nav aids · The Northwestern Passages 0 30 1 269 — Cable ops · North Pacific Ocean 0 10 0 — — Exercises · North Pacific Ocean 0 1.1 0 — — Missiles · Indian Ocean 0 0.1 0 — —