"We realized that all it could do was spin around in circles, making right turns," Hagen said. "At this juncture, we obviously weren't going to be able to navigate to the Titanic."

A mission specialist for the company that owned the Titan submersible that imploded is scheduled to testify before the U.S. Coast Guard.

David Lochridge, OceanGate’s former director of operations, testified of unsafe practices, saying, ‘There was very little in the way of science’