It was the first true submarine: it went faster under water (25 knots) than on the surface (10 knots). It was able to overhaul any but the fastest surface ships and was capable of days-long ...

China’s “Underwater Great Wall” effort to create anti-submarine systems is growing more sophisticated.

Amid reports of a new US military plan for an underwater drone release, scientists say China has already done it better.

A treasure trove of vital German intelligence, the submarine's capture was top-secret. See inside the U-boat, now a permanent exhibit at Chicago's Griffin Museum of Science and Industry. Submarine ...

India's navy launched a submarine, a destroyer and a frigate on Wednesday, representing a considerable military commitment by the nuclear-armed U.S. ally, underscoring the nation's focus on ...

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The US military is reportedly considering a tactic that involves deploying a submarine near the Chinese coast to release a large number of drones from under the water. These drones would then form ...