The USS Grunion went missing about a month after it departed on its first war patrol in 1942. It wasn't seen again until the sons of the Grunion's commanding officer began searching for it and found the wreckage in 2007 off the coast of the Aleutian Islands.
원문출처 : https://www.cnn.com/2019/07/30/world/ww2-submarine-uss-grunion-bow-discovered-trnd/index.html
원문출처 : https://www.cnn.com/2019/07/30/world/ww2-submarine-uss-grunion-bow-discovered-trnd/index.html