The True Story of the Boat that Rocked. Radio Caroline was the world's most famous pirate radio station during its heyday in the 1960s and '70s, but did the thousands of people tuning in realise just what battles went on behind the scenes? For one person to tell the full Radio Caroline story is impossible, but there are many who have been involved over the years whose memories and experiences bring this modern day adventure story of fighting overwhelming odds to life.