"
The Depths of Courage - American Submariners at War with Japan, 1941-1945" by Flint Whitlock and Ron Smith. Got it at Half-Price books for $5.98 hardcover. (Flint Whitlock - is there a more stereotypical action-hero name?)
Next up - "
Shinano! - The Sinking of Japan's Secret Supership" by Captain Joseph F. Enright, USN. Half-Price Books, $9.48 hardcover. Details one of the patrols of the
USS Archer-Fish, who holds the single-patrol record for tonnage at 72,000 - all from one ship.

Apparently the
Shinano was laid down as the third in the
Yamato/Mushashi class super-battleships but they converted it to a flat-top in the middle of the war. It was sunk hugging the Japanese coast before it was fully fitted out and ready for service. Hardly sporting.