Pentagon Unveils Largest Unmanned Ship

(SAN DIEGO) — It's not only drones and driverless cars that may become the norm someday — ocean-faring ships might also run without captains or crews.

The Pentagon on Monday showed off the world's largest unmanned surface vessel, a self-driving 132-foot ship able to travel up to 10,000 nautical miles on its own to hunt for stealthy submarines and underwater mines.