There's a good chance boats of the future might not need fuel, ship hands or even a captain to navigate the seas.
Two Norwegian companies are creating the world's first autonomously operated container ship. The $25 million vessel wouldn't need a crew or gas and might cut operating costs up to 90 percent.
SpaceX also uses autonomous tech for its spaceport drone ships. They're landing platforms for rockets returning from orbit.
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And military forces are even harnessing the technology. Last year, an autonomous, submarine-hunting warship aptly named Sea Hunter was christened. It doesn't need humans to navigate obstacle-filled waters.
And small Navy ships can use the tech, too. In 2014, officials demonstrated 13 ships, some autonomous and some remote-controlled, could find an enemy vessel and escort a target to safety.
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