Despite Churchill's fears, the U-boat threat was never going to cost Britain the war

The sinking of HMS Royal Oak 86 years ago this week sent shockwaves through the nation. But as a thrilling new account ...
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US's Sneakiest Most Successful Underwater Weapon Ever Deployed?

USS Sea Devil, a Balao-class submarine, cuts through the rough waters of the Yellow Sea in April 1945. Her battle-scarred ...