The Final Mission
The Grayback had been solely responsible for sinking 21,594 tons of Japanese crafts during her final mission. The captain during this mission was Moore, who was awarded his third Navy Cross posthumously for his achievements in combat while the sub gained eight battle stars.
Many Decades Later
It would only be decades later before anyone learned of what exactly happened to the Grayback and the 80 crew aboard the vessel. The initial belief was that the sub had sunk beneath under the waves at approximately 100 miles of the southeast of Okinawa.