Warship: Life in the Royal Navy — Episode 4: Episode 4

You are watching the episode Episode 4 JJ Chalmers heads to the unforgiving terrain of Dartmoor to push himself to the limit to find out whether he still has what it takes to match the standards of a Royal Marine. Kate Humble is granted behind-the-scenes access aboard HMS Iron Duke - a frontline British warship with 200 crew on a mission to safeguard the nation's shores.