Warship: Life in the Royal Navy S02E02 - Episode 2

In this episode, Kate Humble enters the secret and clandestine world of submarines. She is invited to step on board a British nuclear powered attack submarine at the secretive base of Faslane in Scotland. Meeting the submariners that live and work there, Kate gets a taste of what life is like on board a Royal Navy submarine.

Former Royal Marine JJ Chalmers heads back to his old stomping ground, the Royal Marine Commando Training Centre in Devon where his training began 18 years ago. Last series, despite the injuries he received whilst serving in Afghanistan, JJ attempted to complete the infamous endurance course. It's a punishing 6.5 mile run along muddy paths, bogs, tunnels and obstacles, and last year JJ didn't make the grade and he has decided to give it one last try but has this former Royal Marine still got the physical and mental strength to pass the test this time?