According to the website for it, the USS Iowa is a fast-attack nuclear-powered submarine. It will be in service for the U.S.

On Saturday people are celebrating the commissioning of the USS Iowa at the Naval Submarine Base New London in Groton, Connecticut. The USS Iowa is the 24th such submarine in the Navy, with a total of ...

The battleship USS Iowa BB-4 saw service in the Spanish-American War ... They’ll have almost 90 days of underwater time even before the commissioning.” The christening is when the ship ...