USS Pennsylvania : The Largest Submarine in The U.S. Navy May 9, 2017 Unipro2013main Featured Front Posts, Global Military Forces, US Navy </p> <h2>Largest Submarine</h2> <p> USS Pennsylvania is a United States Navy Ohio-class ballistic missile submarine which has been in commission since 1989. The Ohio class is a class of nuclear powered submarines used by the United States Navy. The Navy has 18 Ohio-class ballistic missile submarines and guided missile submarines.</p> <p> Please support our Sponsors here :
