Ocean explorer hailed for finding 5 Navy submarines that sank in WWII

Since she was a young girl, Helen Cashell Baldwin was haunted by the mystery of what happened to the doomed Navy submarine USS R-12.

Baldwin’s father, Fredrick Edward Cashell, was one of 42 men who died in June 1943 when the submarine sank off the Florida Keys during a World War II training exercise. The R-12 was never found, and as Baldwin went from an 8-year-old girl to a 75-year-old woman, she all but lost hope that it would ever be discovered.