Unmanned underwater vehicles (UUV), sometimes known as underwater drones, 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.
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. 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. 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.
Hit me like a hammer to my head
We thrashed in bed baby
Drove a truck right through my life
Struck me like a knife
There's a finger in my pie, someone else's guy
Caught you with your pants down, fingers in the till
Caught you stealing something, my last thrill
(1) Chorus:
At war with the world as this life unfurls
Ooh, better get ready
At war with the world, as this life unfurls
Better get ready
Living like a hound dog who's not fed
Life's one big bed baby
From the trash right on the street and anyone you meet
Trying to make the first glance and I doubt you will last
Caught you with your pants down fingers in the till
I guess I've swallowed life's hardest pill