Echo Voyager: 50-Ton Drone Sub Can Go Six Months Without Refueling
Batteries and a 1,000-gallon diesel tank give it a range of 6,500 nautical miles.
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Innovator: Lance Towers
Age: 52
Title: Director of Sea & Land at Boeing Phantom Works, where about 150 people have worked on the project
Form and function
This underwater robot can stay at sea for six months or more at a time without needing refueling from another ship, compared with three days for the previous model, the Echo Ranger.