Скачать или смотреть German Submarines Were Invisible — Until Sonar Found Their Blind Spot

German U-boats dominated the Atlantic, sinking over 2,825 Allied ships and nearly starving Britain into surrender. They seemed invisible—until Allied scientists developed ASDIC sonar technology that could detect submarines underwater.
This documentary reveals the hidden technological war beneath the waves. Discover how Type VII U-boats exploited thermal layers to vanish from detection, how ASDIC's blind spots caused fatal gaps in attacks, and why May 1943—known as "Black May"—saw 41 German submarines destroyed in a single month, ending their reign of terror forever.
From the claustrophobic hell inside U-boats where 44 men lived without bathing for months, to the physics of underwater sound detection, to the breaking of Enigma codes at Bletchley Park—this is the complete story of how technology transformed invisible predators into visible prey.
Every fact, statistic, and technical detail has been verified through historical sources.
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