In night battle , the torp stat is added to FP . This puts her night battle power higher than anything other than Yamato class . To put it into perspective , Bismarck ' s night battle power is better than Iowa ' s by a larger margin than Iowa ' s are better than the Nagatos . However , while the Yamato class are slow , Bismarck is a FBB , and can therefore be used in the escort fleet of a combined fleet i . e . Bismarck is the best FBB for combined fleet escort , or NB heavy maps , like 53 . As for modernisation , post modernisation stats for FP , torp , AA , and armour are apparently random , although influenced by level . You might not have needed to modernise Bismarck much , but someone else might have needed far more .