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unmanned underwater vehicle
Unmanned underwater vehicles (UUV), sometimes known as underwater drones,〔(Foreign Spies Target Underwater Drone Fleet, Military Spooks Say )〕 are any vehicles that are able to operate underwater without a human occupant. These vehicles may be divided into two categories, remotely operated underwater vehicles (ROVs), which are controlled by a remote human operator, and autonomous underwater vehicles (AUVs), which operate independently of direct human input. The latter category would constitute a kind of robot.
==Unmanned underwater vehicles==
The US Navy is currently creating unmanned vehicles to be used in oceanic warfare to discover and terminate underwater mines. For instance, the REMUS is a three-foot long robot used to clear mines in one square mile with 16 hours.〔Carafano, J., & Gudgel, A. (2007). The Pentagon’s robots: Arming the future (version ). Backgrounder 2093, 1-6.〕 This is much more efficient, as a team of human divers would need upwards of 21 days to perform the same task. In addition to UUVs with the purpose of clearing out mines, autonomous submarines began to be prototyped as of 2008.〔Lin, P., Bekey, G., & Abney, K. (2008). Autonomous Military Robotics: Risk, Ethics, and Design. (Electronic version )〕 The difficulty with autonomous submarines is that, in contrast with other robotic applications, their sensors will not be able to give them sufficient information to make an informed decision. Specifically, if the submarine were to encounter a ship that is transporting enemy supplies, there would be no way for the submarine to know how many civilians are on board. Without that knowledge, it would not be allowed to sink the ship for fear of killing too many innocents.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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