“At first glance it resembles a torpedo — a sleek metal cylinder with a propeller and what appears to be a dorsal fin. Yet the device lowered into the frigid waters off the western coast of Norway by the crew of this 3,200-ton research vessel is no weapon; it’s a robot, programmed to search for submarines with little guidance from its operators. Part of a NATO project based in Italy, it is an early version of the kind of unmanned, autonomous technology many believe to be the future of anti-submarine warfare.”
Source: NATO researchers test underwater drones in Norway – News – Stripes