There's a good chance boats of the future might not need fuel, ship hands or even a captain to navigate the seas.
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.