Talk:Bismarck/@comment-25941996-20150101191610/@comment-24978536-20150101195110

They are the German destroyer ship girls in the game. You need to complete the quest which rewards Z1 to be able to construct Z3 and Bismarck. Also, you have to have Z1 as the flagship of your main fleet when trying to construct either Z3 or Bismarck to have any chance of getting them or actually, any german ship is fine as the flagship, but Z1 is the one you'll be getting first.