The 377-foot vessel can dive to depths of more than 800 feet below the surface and maneuver at speeds of over 25 knots.

The USS Nautilus was the world's first nuclear-powered submarine. It participated in scientific and military operations ...

The US Navy's oldest submarine still in active ... writing in a release that the nuclear-powered guided-missile submarine had undergone interior mechanical repairs and shaft replacement.

The new USS Iowa sub, SSN 797, was commissioned Saturday morning during a special ceremony at Submarine Base New London in ...

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 ...

The US Navy's oldest active submarine is back for operations in the Pacific after a three-year maintenance period. The USS Ohio is a first-in-class nuclear-powered guided-missile submarine. The ...

The rain-soaked event featured many Navy officials, including Navy Secretary John Phelan, hosting his first submarine commissioning. Several Iowa politicians were also in attendance, including ...