How does a Submarine work? / Typhoon-class submarine // The worlds largest submarine ever built.
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How a World War Two Submarine Works
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Why China is Terrified of US New Manta Ray Submarine
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The Engineering Marvel called Panama Canal
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How an 18th Century Sailing Warship Works (HMS Victory)
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Sous-marin Kamikaze
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How does a Cargo Helicopter work? (CH-47 Chinook) Heavy Cargo Transporter.@Learnfromthebase
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Why The Largest Submarine In The World Wasn’t Big Enough
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