Quakes · South Pacific Ocean 6 21.7 0 — — Quakes · North Pacific Ocean 6 16.8 1 30 — Quakes · Philippine Sea 5 15 0 — — Spills · The Coastal Waters of Southeast Alaska and British Columbia 4 48 1 28 — Nav aids · North Atlantic Ocean long running 3 608.2 21 977 — Spills · Gulf of Mexico 3 72 0 — — Spills · North Pacific Ocean 3 25 2 26 — Nav aids · South Atlantic Ocean long running 2 784.9 24 511 — Spills · North Atlantic Ocean long running 2 57 2 772 — Cable ops · Celtic Sea 2 38.6 3 122 — Exercises · North Atlantic Ocean 2 12.9 2 8 — Nav aids · South Pacific Ocean long running 1 367.8 12 891 — Nav aids · Gulf of Mexico long running 1 339.4 11 1,247 — Surveys · Indian Ocean long running 1 220.6 8 554 — Nav aids · South China Sea 1 203.6 7 271 — Wrecks · South Atlantic Ocean 1 180.7 6 304 — Nav aids · Arabian Sea long running 1 159.3 6 1,039 — Cable ops · Persian Gulf long running 1 157.5 6 528 — Missiles · North Atlantic Ocean 1 124.5 5 78 — Nav aids · Bering Sea long running 1 112.2 4 617 — Surveys · Persian Gulf long running 1 103.3 4 743 — Spills · Caribbean Sea 1 82 2 198 — Nav aids · Gulf of Alaska 1 72.8 3 180 — Surveys · Black Sea 1 57.5 2 64 — Exercises · Gulf of Mexico 1 47.4 2 107 — Spills · Bering Sea 1 21 0 — — Spills · Beaufort Sea 1 14 0 — — Spills · Red Sea 1 9 1 9 — Surveys · Bay of Bengal 1 4.1 1 122 — Quakes · Banda Sea 1 3 0 — — Quakes · Indian Ocean 1 3 0 — — Quakes · Sea of Okhotsk 1 3 0 — — Quakes · South Atlantic Ocean 1 3 0 — — Quakes · North Atlantic Ocean 1 1.6 1 1 — Missiles · Indian Ocean 1 0.5 1 0 — Nav aids · Caribbean Sea long running 0 1,178 38 1,292 — Surveys · North Atlantic Ocean 0 372 12 241 — Cable ops · North Atlantic Ocean 0 341 11 186 — Volcanic · Philippine Sea long running 0 310 10 1,352 — Other · Gulf of Mexico 0 279 9 107 — Nav aids · North Pacific Ocean long running 0 279 9 878 — Wrecks · Arabian Sea long running 0 248 8 473 — Other · Caribbean Sea long running 0 217 7 549 — Surveys · The Northwestern Passages long running 0 217 7 743 — Wrecks · North Atlantic Ocean 0 186 6 318 — Wrecks · Persian Gulf long running 0 186 6 927 — Surveys · South Pacific Ocean 0 186 6 204 — Wrecks · The Northwestern Passages long running 0 186 6 1,094 — Nav aids · Andaman or Burma Sea long running 0 155 5 481 — Wrecks · Caribbean Sea long running 0 155 5 538 — Surveys · South Atlantic Ocean long running 0 155 5 389 — Mines · Black Sea long running 0 124 4 919 — Nav aids · Celtic Sea 0 124 4 355 — Nav aids · English Channel 0 124 4 302 — Exercises · Aegean Sea 0 93 3 240 — Surveys · Arctic Ocean 0 93 3 311 — Nav aids · Bay of Biscay long running 0 93 3 764 — Ordnance · Bay of Biscay long running 0 93 3 439 — Nav aids · Beaufort Sea long running 0 93 3 751 — Surveys · Caribbean Sea 0 93 3 115 — Nav aids · Hudson Strait long running 0 93 3 414 — Nav aids · Indian Ocean long running 0 93 3 374 — Cable ops · Philippine Sea 0 93 3 116 — Wrecks · South China Sea long running 0 93 3 2,004 — Wrecks · South Pacific Ocean long running 0 93 3 516 — Surveys · Timor Sea 0 93 3 182 — Nav aids · Arafura Sea 0 62 2 116 — Wrecks · Bay of Bengal long running 0 62 2 402 — Other · Bay of Biscay long running 0 62 2 591 — Surveys · Bay of Biscay 0 62 2 52 — Exercises · Black Sea long running 0 62 2 892 — War risk · Black Sea long running 0 62 2 893 — Surveys · Chukchi Sea long running 0 62 2 388 — Wrecks · Coral Sea long running 0 62 2 792 — Cable ops · Indian Ocean 0 62 2 162 — Other · Indian Ocean 0 62 2 228 — Nav aids · Irish Sea and St. George's Channel 0 62 2 265 — Surveys · Kara Sea long running 0 62 2 768 — Wrecks · Kara Sea 0 62 2 319 — Nav aids · Laccadive Sea long running 0 62 2 443 — Other · North Atlantic Ocean 0 62 2 130 — Other · North Pacific Ocean 0 62 2 130 — Towing · North Pacific Ocean 0 62 2 158 — Volcanic · North Pacific Ocean 0 62 2 243 — Wrecks · North Pacific Ocean long running 0 62 2 617 — Nav aids · North Sea 0 62 2 152 — Nav aids · Persian Gulf long running 0 62 2 830 — Other · Persian Gulf long running 0 62 2 562 — Surveys · Sea of Okhotsk 0 62 2 81 — Cable ops · South China Sea 0 62 2 216 — Cable ops · Sulu Sea 0 62 2 167 — Nav aids · Tasman Sea 0 62 2 117 — Missiles · Aegean Sea 0 31 1 228 — Wrecks · Arafura Sea 0 31 1 233 — Nav aids · Arctic Ocean 0 31 1 323 — Derelicts · Bass Strait 0 31 1 141 — Surveys · Bass Strait 0 31 1 113 — Other · Bay of Bengal long running 0 31 1 392 — Debris · Bay of Biscay long running 0 31 1 724 — Wrecks · Bay of Biscay 0 31 1 95 — Other · Beaufort Sea 0 31 1 141 — Surveys · Beaufort Sea long running 0 31 1 388 — Other · Black Sea 0 31 1 151 — Cable ops · Caribbean Sea 0 31 1 208 — Derelicts · Caribbean Sea 0 31 1 52 — Exercises · Caribbean Sea 0 31 1 344 — Surveys · Celtic Sea 0 31 1 39 — Quakes · Coral Sea 0 31 1 283 — Nav aids · Coral Sea 0 31 1 114 — Wrecks · Eastern China Sea long running 0 31 1 400 — Wrecks · English Channel 0 31 1 136 — Nav aids · Gulf of California long running 0 31 1 869 — Cable ops · Gulf of Guinea 0 31 1 119 — Surveys · Gulf of Mexico 0 31 1 57 — Wrecks · Gulf of Mexico long running 0 31 1 902 — Nav aids · Gulf of Oman 0 31 1 146 — Wrecks · Gulf of Suez 0 31 1 225 — Nav aids · Hudson Bay 0 31 1 46 — Wrecks · Hudson Bay long running 0 31 1 410 — Restricted · Indian Ocean 0 31 1 169 — Other · Irish Sea and St. George's Channel 0 31 1 131 — Surveys · Irish Sea and St. George's Channel 0 31 1 135 — Wrecks · Irish Sea and St. George's Channel 0 31 1 121 — Cable ops · Java Sea 0 31 1 310 — Icebergs · Labrador Sea 0 31 1 73 — Surveys · Laccadive Sea long running 0 31 1 931 — Wrecks · Laccadive Sea long running 0 31 1 561 — Cable ops · Ligurian Sea 0 31 1 257 — Nav aids · Mediterranean Sea - Eastern Basin long running 0 31 1 1,186 — Other · Mediterranean Sea - Eastern Basin 0 31 1 131 — Surveys · Mediterranean Sea - Eastern Basin 0 31 1 250 — Cable ops · Mediterranean Sea - Western Basin 0 31 1 128 — Structures · Mozambique Channel long running 0 31 1 550 — Derelicts · North Atlantic Ocean 0 31 1 305 — Incidents · North Atlantic Ocean 0 31 1 85 — Missiles · North Pacific Ocean long running 0 31 1 550 — Surveys · Norwegian Sea 0 31 1 127 — Nav aids · Philippine Sea 0 31 1 254 — Surveys · South China Sea 0 31 1 116 — Surveys · Tasman Sea 0 31 1 197 — Nav aids · The Coastal Waters of Southeast Alaska and British Columbia long running 0 31 1 538 — Nav aids · The Northwestern Passages 0 31 1 331 — Cable ops · Timor Sea 0 31 1 41 — Surveys · Mediterranean Sea - Western Basin 0 30 0 — — Spills · Gulf of Alaska 0 11 0 — — Spills · South China Sea 0 11 0 — —