Germany’s submarines posed a huge threat to allied ships in the Second World War. In fact, Winston Churchill later famously said that the Kriegsmarine's UBoats were his biggest worry during the war but surprisingly the deadliest submarine of all time actually operated some 20 years earlier at the height of the First World War!

SM U35 amassed a victory tally which has never since been rivalled, sinking some 226 Allied and neutral ships. Today we'll look at the story of this infamous boat and just how it was so successful!

00:00 Intro
01:40 UBoats
02:24 Diesel Engines
03:15 Torpedoes
4:00 U35
5:06 Sunken Ships
6:02 Allied Shipping
7: 13 Logbook
8:07 Patrol
9:04 End of The War
10:31 Outro

Oceanliner Designs explores the design, construction, engineering and operation of history’s greatest vessels | from Titanic to Queen Mary and from the Empress of Ireland to the Lusitania. Join maritime researcher and illustrator Michael Brady as he tells the stories behind some of history's most famous ocean liners and machines!

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