Draining the North Sea: Submarines at War
Season 2 Episode 3 of 15
How the development of U-boats changed the shape of naval warfare, introducing the world's first stealth weapon and forcing Allied forces to adopt new tactics to fight back
Draining the North Sea: Submarines at War airs on National Geographic Channel +1 at 5:00 PM, Tuesday 9 December. (Subtitles, audio description.)
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