The Navy is starting to put up real money for robot submarines

The U.S. naval fleet of the future may one day include submarines without a sailor from bow to stern that prowl the depths of the ocean, navigating mine-infested waters to gather intelligence or even clandestinely drop explosives.

The military views autonomous vehicles as a way to accomplish missions deemed too risky, mundane or expensive for human crews. While aerial drones have largely been tasked with these types of duties for more than a decade, the Navy is now increasingly funding robotic ships and undersea drones to complement the work done by its crewed vessels.