Part sub killer, part terrorist hunter and part spy. 'Super Subs' deconstructs a mystery machine that few of us have seen up close. Focusing on the latest-generation submarine, the USS Texas, as well as other international subs, 'Super Subs' tells the story of this incredible invention. Through exclusive access to training missions, CGI and recreation, well show how today's submarines defy the imagination: they dive deeper, are quieter (and deadlier), and are capable of feats that would amaze even science fiction writers. Most of us know subs more for their terrifying disasters than their achievements. We investigate what happened in some historic accidents and show how new technologies seek to prevent future calamities - even as submarines take on new and more perilous missions.