Please note this is a region B Blu-ray & will require a region B or region free Blu-ray player in order to play At the height of WWII a young submarine crew heads out to sea on a top-secret mission that all but ensures most will never make it home alive Ordered to patrol the Atlantic & destroy an allied armada bringing supplies to Britain these raw recruits must band together bracing themselves against a depth-charge assault from an unseen enemy Oscar-nominated director Wolfgang Petersen&s epic adventure deftly explores tension as pressure builds to an explosive climax packing a visceral punch few movies can match