The USS Growler submarine at the Intrepid Museum.John Arehart/ShutterstockThe USS Growler is the only nuclear missile submarine in the US that's open to the public.Commissioned in 1958, the USS Growler patrolled seas off the coast of Russia during the Cold War.The submarine is now an attraction at the Intrepid Museum in New York City.The USS Growler was once a top-secret US Navy submarine that patrolled the ocean's depths during the Cold War.