Underwater operations company Phoenix International has a contract with the U.S. Navy to use a robot called Bluefin-21 to search the Indian Ocean for signs of the missing Malaysian Airlines flight 370.
The 21-foot-long robot is capable of staying submerged for 25 hours at a time, deploying its sensors to search and map 40 square miles of sea floor per day.
We spoke to David P. Kelly, President and CEO of Bluefin Robotics, the Massachusetts-based company which manufactures Bluefin-21, to learn more about it.
“It’s a 4,500-meter-rated vehicle, so it can descend to 2.5 miles underwater,” he told us. “Once it goes down, it ‘flies’ above the seabed and uses sonar acoustics to image the ocean floor. It also moves in a ‘mowing the lawn’ pattern, running in parallel lines that overlap and cover the entire bottom to form an image of the sea floor.”

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