Exercises · North Pacific Ocean 10 196.2 14 38 — Quakes · South Pacific Ocean 9 27 0 — — Quakes · North Pacific Ocean 5 15.7 1 31 — Surveys · South Atlantic Ocean long running 3 276.3 9 450 — Surveys · Indian Ocean long running 2 331.8 12 615 — Cable ops · Philippine Sea 2 153.9 6 177 — Surveys · Persian Gulf long running 2 146.8 6 804 — Exercises · Bay of Bengal 2 128.1 6 38 — Exercises · South Pacific Ocean 2 121.9 4 32 — Surveys · Arabian Sea 2 83.1 4 57 — Cable ops · South Pacific Ocean 2 47.7 3 47 — Spills · North Atlantic Ocean long running 2 47 3 833 — Exercises · Laccadive Sea 2 33.1 2 30 — Quakes · Molukka Sea 2 6 0 — — Nav aids · North Atlantic Ocean long running 1 745.1 24 1,038 — Volcanic · Philippine Sea long running 1 442.5 15 1,413 — Nav aids · South Pacific Ocean long running 1 440.8 15 952 — Surveys · North Atlantic Ocean 1 347.2 11 302 — Missiles · North Atlantic Ocean 1 159.9 5 139 — Nav aids · Irish Sea and St. George's Channel 1 154.9 5 326 — Exercises · Philippine Sea 1 122.8 4 36 — Surveys · Sea of Okhotsk 1 112.6 4 142 — Surveys · Laccadive Sea long running 1 108.5 4 992 — Exercises · Arabian Sea 1 99.4 4 34 — Towing · North Pacific Ocean 1 91.6 3 219 — Missiles · Indian Ocean 1 73.7 3 61 — Surveys · Bay of Bengal 1 68.6 3 63 — Nav aids · Great Australian Bight 1 67.3 3 44 — Cable ops · North Pacific Ocean 1 65.5 3 49 — Icebergs · Labrador Sea 1 31.7 1 134 — Surveys · North Pacific Ocean 1 30.4 1 30 — Icebergs · South Atlantic Ocean 1 30.4 1 30 — Exercises · South Atlantic Ocean 1 30 1 29 — Spills · Gulf of Mexico 1 22 0 — — Spills · North Pacific Ocean 1 22 1 45 — Spills · Bering Sea 1 14 0 — — Spills · Philippine Sea 1 14 0 — — Spills · South Pacific Ocean 1 14 0 — — Spills · The Coastal Waters of Southeast Alaska and British Columbia 1 9 1 9 — Exercises · Gulf of California 1 6.4 1 6 — Quakes · Banda Sea 1 3 0 — — Quakes · Indian Ocean 1 3 0 — — Quakes · Philippine Sea 1 3 0 — — Missiles · South Pacific Ocean 1 2.2 1 2 — Quakes · Bismarck Sea 1 1.5 1 1 — Nav aids · Caribbean Sea long running 0 1,271 41 1,353 — Nav aids · South Atlantic Ocean long running 0 588.8 17 572 — Nav aids · Gulf of Mexico long running 0 341 11 1,308 — Nav aids · North Pacific Ocean long running 0 279 9 939 — Wrecks · Arabian Sea long running 0 248 8 534 — Cable ops · North Atlantic Ocean 0 223.3 7 218 — Wrecks · Persian Gulf long running 0 217 7 988 — Nav aids · South China Sea 0 217 7 332 — Surveys · The Northwestern Passages long running 0 217 7 804 — Nav aids · Arabian Sea long running 0 186 6 1,100 — Nav aids · Celtic Sea long running 0 186 6 416 — Wrecks · North Atlantic Ocean long running 0 186 6 379 — Cable ops · Persian Gulf long running 0 186 6 589 — Wrecks · South Atlantic Ocean long running 0 186 6 365 — Surveys · South Pacific Ocean 0 186 6 265 — Wrecks · The Northwestern Passages long running 0 186 6 1,155 — Nav aids · Andaman or Burma Sea long running 0 155 5 542 — Mines · Black Sea long running 0 155 5 980 — Wrecks · Caribbean Sea long running 0 155 5 599 — Cable ops · South China Sea 0 155 5 277 — Other · Caribbean Sea long running 0 130.2 4 610 — Nav aids · Bering Sea long running 0 124 4 678 — Exercises · Black Sea long running 0 124 4 953 — Cable ops · Celtic Sea 0 124 4 183 — Nav aids · English Channel 0 124 4 363 — Surveys · Timor Sea 0 124 4 243 — Exercises · Aegean Sea 0 93 3 301 — Surveys · Arctic Ocean long running 0 93 3 372 — Nav aids · Bay of Biscay long running 0 93 3 825 — Ordnance · Bay of Biscay long running 0 93 3 500 — Nav aids · Beaufort Sea long running 0 93 3 812 — Nav aids · Gulf of Alaska 0 93 3 241 — Nav aids · Hudson Strait long running 0 93 3 475 — Cable ops · Indian Ocean 0 93 3 223 — Nav aids · Indian Ocean long running 0 93 3 435 — Nav aids · Laccadive Sea long running 0 93 3 504 — Exercises · North Atlantic Ocean 0 93 3 69 — Other · North Atlantic Ocean 0 93 3 191 — Wrecks · South China Sea long running 0 93 3 2,065 — Wrecks · South Pacific Ocean long running 0 93 3 577 — Surveys · Caribbean Sea 0 65.1 2 176 — Cable ops · Arabian Sea 0 62 2 52 — Nav aids · Arafura Sea 0 62 2 177 — Nav aids · Bay of Bengal 0 62 2 58 — Wrecks · Bay of Bengal long running 0 62 2 463 — Other · Bay of Biscay long running 0 62 2 652 — Surveys · Bay of Biscay 0 62 2 113 — Surveys · Black Sea 0 62 2 125 — War risk · Black Sea long running 0 62 2 954 — Spills · Caribbean Sea 0 62 2 259 — Surveys · Chukchi Sea long running 0 62 2 449 — Nav aids · Coral Sea 0 62 2 175 — Wrecks · Coral Sea long running 0 62 2 853 — Surveys · Gulf of Mexico 0 62 2 118 — Other · Indian Ocean 0 62 2 289 — Surveys · Irish Sea and St. George's Channel 0 62 2 196 — Surveys · Kara Sea long running 0 62 2 829 — Wrecks · Kara Sea long running 0 62 2 380 — Other · North Pacific Ocean 0 62 2 191 — Volcanic · North Pacific Ocean 0 62 2 304 — Wrecks · North Pacific Ocean long running 0 62 2 678 — Nav aids · North Sea 0 62 2 213 — Nav aids · Persian Gulf long running 0 62 2 891 — Other · Persian Gulf long running 0 62 2 623 — Cable ops · South Atlantic Ocean 0 62 2 56 — Incidents · South China Sea 0 62 2 45 — Cable ops · Sulu Sea 0 62 2 228 — Nav aids · Tasman Sea 0 62 2 178 — Exercises · Gulf of Mexico 0 32.6 1 168 — Missiles · Aegean Sea 0 31 1 289 — Missiles · Arabian Sea 0 31 1 35 — Wrecks · Arafura Sea 0 31 1 294 — Nav aids · Arctic Ocean long running 0 31 1 384 — Derelicts · Bass Strait 0 31 1 202 — Surveys · Bass Strait 0 31 1 174 — Other · Bay of Bengal long running 0 31 1 453 — Debris · Bay of Biscay long running 0 31 1 785 — Wrecks · Bay of Biscay 0 31 1 156 — Other · Beaufort Sea 0 31 1 202 — Surveys · Beaufort Sea long running 0 31 1 449 — Nav aids · Black Sea 0 31 1 45 — Other · Black Sea 0 31 1 212 — Cable ops · Caribbean Sea 0 31 1 269 — Derelicts · Caribbean Sea 0 31 1 113 — Exercises · Caribbean Sea long running 0 31 1 405 — Surveys · Celtic Sea 0 31 1 100 — Quakes · Coral Sea 0 31 1 344 — Exercises · Coral Sea 0 31 1 35 — Wrecks · Eastern China Sea long running 0 31 1 461 — Wrecks · English Channel 0 31 1 197 — Surveys · Great Australian Bight 0 31 1 34 — Nav aids · Gulf of California long running 0 31 1 930 — Cable ops · Gulf of Guinea 0 31 1 180 — Storms · Gulf of Mexico 0 31 1 31 — Wrecks · Gulf of Mexico long running 0 31 1 963 — Nav aids · Gulf of Oman 0 31 1 207 — Wrecks · Gulf of Suez 0 31 1 286 — Nav aids · Hudson Bay 0 31 1 107 — Wrecks · Hudson Bay long running 0 31 1 471 — Restricted · Indian Ocean 0 31 1 230 — Nav aids · Inner Seas off the West Coast of Scotland 0 31 1 49 — Exercises · Irish Sea and St. George's Channel 0 31 1 31 — Other · Irish Sea and St. George's Channel 0 31 1 192 — Wrecks · Irish Sea and St. George's Channel 0 31 1 182 — Exercises · Japan Sea 0 31 1 36 — Cable ops · Java Sea long running 0 31 1 371 — Wrecks · Laccadive Sea long running 0 31 1 622 — Cable ops · Ligurian Sea 0 31 1 318 — Nav aids · Mediterranean Sea - Eastern Basin long running 0 31 1 1,247 — Other · Mediterranean Sea - Eastern Basin 0 31 1 192 — Surveys · Mediterranean Sea - Eastern Basin 0 31 1 311 — Cable ops · Mediterranean Sea - Western Basin 0 31 1 189 — Surveys · Mediterranean Sea - Western Basin 0 31 1 58 — Structures · Mozambique Channel long running 0 31 1 611 — Surveys · Mozambique Channel 0 31 1 41 — Derelicts · North Atlantic Ocean long running 0 31 1 366 — Missiles · North Pacific Ocean long running 0 31 1 611 — Other · North Sea 0 31 1 31 — Surveys · Norwegian Sea 0 31 1 188 — Nav aids · Philippine Sea 0 31 1 315 — Exercises · Red Sea 0 31 1 34 — Exercises · Sea of Okhotsk 0 31 1 37 — Exercises · South China Sea 0 31 1 38 — Surveys · South China Sea 0 31 1 177 — Surveys · Tasman Sea 0 31 1 258 — Nav aids · The Coastal Waters of Southeast Alaska and British Columbia long running 0 31 1 599 — Nav aids · The Northwestern Passages long running 0 31 1 392 — Cable ops · Timor Sea 0 31 1 102 — Other · Gulf of Mexico 0 14.1 0 — — Incidents · North Atlantic Ocean 0 1.6 0 — —