In the final episode of Hunt for U-479, the team make the journey to the Finnish archipelago to hear the story of the world’s only intact treasure ship, the Vrouw Maria. The following day they finally reach their destination, meeting a side scan sonar expert to explore the mystery behind the submarine Lembit and U-479 collision.

Welcome to The World History Channel. With new uploads every week, we break down the biggest stories that have shaped human history. From the dawn of ancient civilisations up to the modern age, these are the stories from our past that matter the most.

The World History Channel is in partnership with the History Hit network.