Not in the U.S. Navy: Vanguard-Class Submarines Have 1 Job Only

Summary and Key Points: The Royal Navy's Vanguard-class nuclear submarines serve as the UK's strategic nuclear deterrent, carrying Trident II D5 missiles. Introduced in 1994, the four Vanguard-class subs are the largest built in the UK and the third-largest vessels in the Royal Navy. Their only mission is to fire a vast amount of nuclear weapons at any targets - if ever called upon to do so. 

-These subs will eventually be replaced by the Dreadnought-class.

-The Vanguard-class also...