'Cheap and Quiet' Submarine from Sweden 'Sunk' a U.S. Navy Aircraft Carrier in a Wargame

What 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) system, allowing it to remain submerged for up to 14 days.

-This advanced capability made the Gotland one of the first diesel-electric subs to challenge nuclear-powered vessels. In 2005, the Gotland proved its prowess during a U.S.-Swedish naval war game, where it successfully evaded an entire U.S. carrier strike group...