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Wreckage of WWII submarine USS Grayback discovered off Okinawa

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Japanese historian Hiroshi Iwasaki also played a crucial role in the discovery. The expert retranslated a primary record of the Grayback’s sinking and found that the longitude differed from a record created in 1946. Armed with the new coordinates, the Lost 52 Project was able to target the area where the wreck was subsequently found.


The USS Grayback was launched on Jan. 31, 1941, according to the Naval History and Heritage Command and quickly earned a fearsome reputation in the Pacific Theater. During 10 war patrols, it sank 14 enemy vessels, including Japanese submarines, totaling 63,835 tons of shipping. In January 1943, the sub’s crew also rescued six downed U.S. aviators from Munda in the Solomon Islands, for which her commanding officer was awarded the Navy Cross.

The latitude/longitude was off by 100 miles until the Iwasaki found the error in the report of the Japanese bomber that sank the sub.



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