Ross travels to the Orkney Islands to explore German warship F2 after being inspired by the story of his relatives, who served in the Royal Navy during WWII. Ross Kemp dives on a series of incredible shipwrecks around the British coastline to reveal some of the nation’s murkiest and best-kept secrets. From the remains of a slave ship discovered off Plymouth, to the Kaiser’s sunken Imperial Fleet in Scapa Flow and an experimental submarine aircraft carrier, which sank with all passengers and crew on deck during its sea trials, Ross uncovers Britain’s hidden maritime past.