Quakes · South Pacific Ocean 7 21.2 1 33 — Spills · Gulf of Mexico 6 67 4 44 — Quakes · Molukka Sea 4 12 0 — — Nav aids · North Sea long running 3 86.8 5 423 — Containers · North Atlantic Ocean 3 59.7 3 27 — Nav aids · South Atlantic Ocean 2 229.5 9 265 — Nav aids · Inner Seas off the West Coast of Scotland 2 31.3 3 33 — Spills · Caribbean Sea 2 28 0 — — Spills · Gulf of Alaska 2 28 0 — — Cable ops · Celtic Sea 2 15.8 1 16 — Missiles · North Pacific Ocean 2 7.3 2 6 — Quakes · North Atlantic Ocean 2 6 0 — — Quakes · Philippine Sea 2 6 0 — — Cable ops · North Atlantic Ocean 2 1 2 0 — Icebergs · North Atlantic Ocean 2 0.8 2 0 — Nav aids · Tyrrhenian Sea long running 1 185.2 6 710 — Nav aids · North Atlantic Ocean long running 1 155.2 6 763 — Wrecks · North Sea 1 122.1 4 198 — Incidents · South China Sea long running 1 109.6 4 1,016 — Nav aids · North Pacific Ocean long running 1 77.6 3 901 — Nav aids · Persian Gulf 1 76.4 3 339 — Wrecks · Persian Gulf long running 1 70.2 3 1,448 — Incidents · North Atlantic Ocean long running 1 66 3 1,261 — Nav aids · English Channel 1 65.8 3 66 — Nav aids · Indian Ocean 1 58.1 2 326 — Nav aids · Adriatic Sea long running 1 53.5 2 502 — Surveys · South Atlantic Ocean 1 50.4 2 339 — Containers · South China Sea 1 49.5 2 42 — Nav aids · Coral Sea 1 35.9 2 37 — Nav aids · Celtic Sea 1 35.7 2 100 — Quakes · North Pacific Ocean 1 34 1 149 — Cable ops · South China Sea 1 33.2 2 36 — Cable ops · Eastern China Sea 1 30.9 1 30 — Derelicts · Coral Sea 1 26.1 1 26 — Cable ops · South Atlantic Ocean 1 20.7 1 20 — Wrecks · South China Sea 1 19.5 1 19 — Nav aids · Ligurian Sea 1 18.1 1 18 — Derelicts · Mediterranean Sea - Eastern Basin 1 17.1 1 17 — Other · Bass Strait 1 16.9 1 16 — Containers · South Atlantic Ocean 1 13.4 1 13 — Spills · North Atlantic Ocean 1 13 1 13 — Incidents · Celebes Sea 1 10.7 1 10 — Incidents · Red Sea 1 6.6 1 6 — Surveys · Japan Sea 1 3.6 1 3 — Other · Caribbean Sea 1 3.3 1 3 — Quakes · Caribbean Sea 1 3 0 — — Quakes · Coral Sea 1 3 0 — — Quakes · Flores Sea 1 3 0 — — Quakes · Indian Ocean 1 3 0 — — Quakes · South Atlantic Ocean 1 3 0 — — Nav aids · Arafura Sea 1 2.7 1 2 — Exercises · North Atlantic Ocean 1 2.7 1 2 — Cable ops · Aegean Sea 1 2.2 1 2 — Cable ops · Ionian Sea 1 1.4 1 1 — Surveys · Mediterranean Sea - Western Basin 1 1.3 1 1 — Incidents · North Pacific Ocean 1 1 1 0 — Other · Ionian Sea 1 0.6 1 0 — War risk · Persian Gulf long running 0 124 4 555 — Nav aids · Mediterranean Sea - Western Basin 0 93 3 233 — Other · North Atlantic Ocean long running 0 93 3 822 — Other · North Sea long running 0 93 3 602 — Cable ops · Persian Gulf 0 62 2 203 — Other · South Atlantic Ocean long running 0 62 2 637 — Nav aids · South Pacific Ocean long running 0 62 2 824 — Other · Tyrrhenian Sea 0 62 2 199 — Other · Adriatic Sea long running 0 31 1 745 — Surveys · Adriatic Sea long running 0 31 1 371 — Exercises · Aegean Sea 0 31 1 352 — Nav aids · Black Sea 0 31 1 57 — Towing · Black Sea long running 0 31 1 619 — Nav aids · Bristol Channel long running 0 31 1 546 — Nav aids · Caribbean Sea 0 31 1 281 — Incidents · Caribbean Sea long running 0 31 1 707 — Containers · Celtic Sea long running 0 31 1 490 — Ordnance · English Channel long running 0 31 1 533 — Wrecks · English Channel 0 31 1 298 — Other · Gulf of Mexico long running 0 31 1 698 — Nav aids · Gulf of Suez 0 31 1 209 — Derelicts · Indian Ocean long running 0 31 1 564 — Other · Labrador Sea long running 0 31 1 862 — Incidents · Laccadive Sea 0 31 1 48 — Incidents · Ligurian Sea long running 0 31 1 759 — Other · Makassar Strait 0 31 1 73 — Wrecks · Malacca Strait long running 0 31 1 785 — Nav aids · Mediterranean Sea - Eastern Basin long running 0 31 1 430 — Derelicts · Mediterranean Sea - Western Basin 0 31 1 47 — Cable ops · Mozambique Channel 0 31 1 104 — Nav aids · Mozambique Channel 0 31 1 75 — Debris · North Atlantic Ocean 0 31 1 48 — Missiles · North Atlantic Ocean 0 31 1 136 — Ordnance · North Atlantic Ocean 0 31 1 104 — Restricted · North Atlantic Ocean 0 31 1 289 — Surveys · North Atlantic Ocean long running 0 31 1 467 — Derelicts · North Pacific Ocean long running 0 31 1 767 — Mines · North Sea 0 31 1 295 — Structures · North Sea 0 31 1 211 — Surveys · North Sea long running 0 31 1 403 — Other · Persian Gulf 0 31 1 49 — Structures · Persian Gulf 0 31 1 113 — Nav aids · Philippine Sea long running 0 31 1 1,041 — Volcanic · Philippine Sea long running 0 31 1 832 — Other · Red Sea long running 0 31 1 1,119 — Nav aids · Rio de La Plata 0 31 1 36 — Nav aids · Solomon Sea 0 31 1 144 — Derelicts · South Atlantic Ocean 0 31 1 43 — Incidents · South Atlantic Ocean long running 0 31 1 514 — Other · South China Sea 0 31 1 43 — Derelicts · South Pacific Ocean 0 31 1 40 — Incidents · South Pacific Ocean 0 31 1 331 — Nav aids · Sulu Sea 0 31 1 67 — Nav aids · Timor Sea long running 0 31 1 1,207 — Spills · Tyrrhenian Sea 0 31 1 36 — Wrecks · Tyrrhenian Sea 0 31 1 70 — Quakes · Banda Sea 0 3.3 0 — — Quakes · Solomon Sea 0 2.9 0 — —