Left to Right: 15 in German battleship Bismarck tons full displacement), 16 in US battleship Iowa tons full displacement), 18 in Japanese battleship Yamato - tons full displacement): interesting comparison.
WWII The German battleship Bismarck. This photo offers a good view of the enormous beam. The Bismarck was the widest battleship in the world. Only the Japanese battleships of the Yamato Class (then still under construction) would have a wider beam of
15 in battleship Tirpitz protected by torpedo nets in Norway, where she spent most of her war, RAF Lancasters finally sank her there in November 1944 after a multitude of previous air and sub-sea (midget submarine) attacks.