In 2005, the USS San Francisco submarine tragically collided with an underwater mountain south of Guam, resulting in one ...

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The U.S. Navy has relied on submarines as an important part of its naval power since the invention of the Turtle, the first military sub, in 1775. Over the years, submarine technology improved ...

Sailors aboard the Virginia-class fast attack submarine Iowa man the rails during a commissioning ceremony in Groton, Connecticut, on Saturday. (John Narewski/U.S. Navy) Advertisement ...