The United States Navy is quietly fielding a new kind of undersea vehicle that is less a traditional submarine and more a roaming, robotic weapons truck. Instead of relying on large crews and long ...

PERTH, Australia — A robotic submarine headed back down into the depths of the Indian Ocean on Friday to scour the seafloor for any trace of the missing Malaysian jet one month after the search began ...

DARPA autonomous surface vessel to track and follow enemy subs for months The growing number of adversaries able to build and operate quiet diesel electric submarines is a national security threat ...