A mine is the leading explanation for USS Albacore's loss

Was USS Albacore lost to an explosion of unknown origin?

The exact cause is unconfirmed, but the panel regards a naval mine as the leading explanation and a depth-charge attack as less likely.

The question concerns the wartime USS Albacore, rather than the later experimental submarine of the same name. She left Pearl Harbor on 24 October 1944, refueled at Midway on 28 October, and was never heard from again. The panel identifies a mine off northern Hokkaido as the presumed cause of her loss. It regards a depth-charge attack as less likely, while explicitly acknowledging that the cause is not known with certainty.