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 Navy formally unleashed its newest Virginia-class fast attack submarine, the Iowa, in a commissioning ceremony Saturday in Groton, Connecticut. The 377-foot vessel, built by General Dynamics ...

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) The Navy formally ...