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...
20 Largest Animals of All Time
The Largest Aircraft Carrier in The World (full video)
The Largest Submarine in The U.S. Navy
The Worlds Largest BITE
World's Largest Urban Zipline
The Largest Dam in The World
Top 10 Largest Cruise Ships in the World 2014
Read more about The Geek Mind.