thick armor from Japanese Yamato class battleship, pierced by a US Navy gun. The armor is on display at the US Navy Museum just in case anyone asked to see the math. That is a huge hole.
World's Largest Battleship Imperial Japanese Navy battleship Yamato .full power trials in Sukumo Bay 1941
naval-weeb: “ Japanese aircraft carrier Shinano underway during her sea trials off Yokohama Japan, November 1944 “ The Shinano was suppose to be the Yamato class battleship along with Yamato.