Although robotic ships of this sort are some ways off in the future, it’s not a question of if they will happen but when. My colleagues and I at Rolls-Royce anticipate that the first commercial vessel to navigate entirely by itself could be a harbor tug or a ferry designed to carry cars the short distance across the mouth of a river or a fjord and that it or similar ships will be in commercial operation within the next few years. And we expect fully autonomous oceangoing cargo ships to be routinely plying the world’s seas in 10 or 15 years’ time. ... Remotely controlled ships, piloted by people on shore, and autonomous ships, which can take actions for themselves, are the latest beneficiaries of increasing digital connectivity and intelligence. These developments in electronic sensors, telecommunications, and computing have sparked interest in a range of autonomous vehicles including cars, planes, helicopters, trains, and now ships. ... That people should be seriously interested in robotic ships is easy enough to explain: Such ships are expected to be safer, more efficient, and cheaper to run. According to a report published by the Munich-based insurance company Allianz in 2012, between 75 and 96 percent of marine accidents are a result of human error, often a result of fatigue.