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'Cheap and Quiet' Submarine from Sweden 'Sunk' a U.S. Navy Aircraft Carrier in a WargameWhat You Need to Know: The Swedish Navy's Gotland-class submarine, built between 1992 and 1996, revolutionized diesel-electric submarines with its Stirling engine air-independent propulsion (AIP ...
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Are Submarines Still Relevant For War?The second is that these cheap drones could be used on submarines themselves. A one-way underwater drone that costs as little as $250,000 might sink a nuclear submarine that costs $4.5 billion.
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