A WWII submarine went missing for 75 years. High-tech undersea drones solved the...
The USS Grayback was found at a depth of more than 1,400 feet off Okinawa, Japan, after a researcher realized that that Navy had missed its final coordinates by more than 100 miles.
https://www.washingtonpost.com/nation/2019/11/11/uss-grayback-discovered-tim-taylor-lost-project/