DoD
There was a time when elements of the U.S. Navy appreciated the complexity, effort, duration, and assets anti-submarine warfare, or ASW, demanded of a fleet. Expecting to fight a blue-water war-at-sea campaign against a maturing Soviet Navy, serious investment was made toward developing the best sensors and weapons that could defeat any undersea threat.
Designed in response to the existential crisis created by the speed, endurance, and performance of nuclear-powered submarines, as first demonstrated by the USS Nautilus, 63 frigates were built for service in the U.S.