The company deployed the sonar on its torpedo-like Bluefin-21 autonomous underwater vehicle and then used a video-equipped remotely operated vehicle owned by Submersible Systems Inc. to inspect any promising radar targets.

WSJ: Sonar Image Renews Hope of Locating Earhart Plane

With this in mind Dr Hover and Mr Englot, along with a team of colleagues, used a robot known as the Hovering Autonomous Underwater Vehicle (HAUV), which was developed at MIT and has since been commercialised by a company called Bluefin Robotics.

ECONOMIST: Monitor