They were used primarily in the 1960s and 1970s and were replaced by the "Sturgeon" and "Los Angeles" classes, and were the result of a study commissioned in 1956 by the Chief of Naval Operations (CNO), Admiral Arleigh Burke.
The "Thresher/Permit" class were the result of a study commissioned in 1956 by the Chief of Naval Operations (CNO), Admiral Arleigh Burke. They were used primarily in the 1960s and 1970s, until replaced by the and classes.
They were used primarily in the 1960s and 1970s, until replaced by the and classes. The "Thresher/Permit" class were the result of a study commissioned in 1956 by the Chief of Naval Operations (CNO), Admiral Arleigh Burke.
They were used primarily in the 1960s and 1970s, until replaced by the and classes. The "Thresher/Permit" class were the result of a study commissioned in 1956 by the Chief of Naval Operations (CNO), Admiral Arleigh Burke.