  {|    |} the sturgeon-class (colloquially in naval circles, known as the 637-class) was a class of nuclear-powered fast attack submarines (ssn) in service with the united states navy from the 1960s until 2004. they were the "work horses" of the submarine attack fleet throughout much of the cold war. the boats were phased out in the 1990s and early 21st century, as their successors, the los angeles, followed by the seawolf and [[vi
Cold_War_submarines_of_the_United_States Sturgeon-class_submarines Submarine_classes Vietnam_War_submarines_of_the_United_States