'Sea Hunter': World's First Unmanned Ship Stalks Subs

The world's first unmanned ship set sail on April 7. The new ship, called the Sea Hunter, will hunt enemy submarines lurking in the deep. A new hunter is lurking in the deep -- and it's made of metal, silicon, and lots and lots of artificial intelligence. The Defense Advanced Research Projects Agency (DARPA) officially launched its unmanned submarine-hunting ship, holding a christening ceremony on Thursday (April 7) for the "Sea Hunter." The new vessel is part of DARPA's larger initiative to use artificial intelligence (AI) for a wider array of military decisions and tasks.