Ghosts of Bungo Suido (2013)

In late 1944, America's naval forces face what seems an insurmountable
threat from Japan: immense Yamato-class battleships, which dwarf every
other ship at sea.  Built in secrecy, these ships seem invincible, and
lay waste to any challengers. American military intelligence knows of
two such ships, but there is rumored to be a third, a newly-built
aircraft carrier, ready to launch from Japan's heavily-defended and
mined Inland Sea. Such a ship would threaten U.S. Pacific forces, allow
Japan to launch air attacks against the U.S. mainland, and change the
course of the war.No American submarine has penetrated the
Inland Sea; five boats and their crews have perished in the Bungo Suido
strait. Lieutenant Commander Gar Hammond - an aggressive, attacking
leader with a reckless streak - is now captain of a new
submarine. Hammond may be the navy's only hope to locate and stop the
Japanese super-ship before it launches . . . if it even exists.