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In this Aug. 15, 2017 photo, computer scientist Mohamed Saad Ibn Seddik, of Sea Machines Robotics, uses a laptop to guide a boat outfitted with sensors and self-navigating software and capable of autonomous navigation in Boston Harbor. The boat still needs human oversight, but some of the world's biggest maritime firms have committed to designing ships that won't need any captains or crews - at least not on board. (AP Photo/Steven Senne)