"The Boat that Rocked"
got a most English title in France : "Good Morning England !""
... which became "Pirate Radio" in the U.S.A.
It tells the story of a fictitious pirate radio station : "Radio Rock", whose crew of disc jockeys broadcast rock and pop music to the United Kingdom, from a ship anchored in the North Sea. At that time -1966 in the film- the British government was trying to shut it down... but I won't spoil the film any further