U Boats in WWII, Pt. II: Wolf Packs and Floating Coffins | Curious Minds

In 1941 the British and Canadian navies managed, with great effort, to turn the tide and curb the U-Boats threat in the North Atlantic – but Admiral Dönitz was about to introduce a new kind of U-Boat – one that would deal a deadly blow to the British, American and Canadian forces. Type 21, AKA - Elektroboote.