The USS Sculpin, who stood by the Squalus when she was down and throughout the rescue was sunk in WW2. Half her crew survived and was picked up by the Japanese. Those survivors were split into two groups and placed aboard two Japanese escort carriers for transport back to Japan from Truk.
The Sculpin survivors on the escort carrier Unyo were killed when the carrier was sunk by torpedoes from the USS Sailfish (ex-Squalus). A bit of an ironic twist. I am not sure if that was in the video posted as I have not watched it.
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