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.
The Ohio Class submarine is the third biggest in the world. The US Navy operates 18 Ohio class nuclear-powered submarines, which are the biggest submarines ever built for the US. Each sub has a submerged displacement of 18,750t.
The first submarine of the class, USS Ohio was built by the Electric Boat Division of General Dynamics Corporation in Groton. It was commissioned into service in November 1981. All the other submarines were given names of the US States, except USS Henry M. Jackson, which was named after a US senator.
Each Ohio Class submarine has 170m length, 13m beam and 10.8m draught. The gliding speed on surface is 12kt and under the water is 20kt. The submarine class includes one S8G pressurised water reactor, two geared turbines, one auxiliary diesel motor with 242KW and one shaft with seven-bladed screw.
The submarine is capable of carrying 24 Trident missiles. The armament also includes four 53cm Mark 48 torpedo tubes.
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