Well first of all. The Bismarck, is beautiful as she was designed to be, evasive and destructive. Just suggestion for a minor tweak needed to what the Bismarck design was intended in 1936. 

First the main guns (14.96'), are great. But the problem is on the secondary guns the 15 cm SK C/28 x 12. As in game they are used as an extra flak battery gun, but  in reality and on the True Bismarck. They were a nose-fused HE shell with ballistic cap. Not an Anti-Air. Since our third gun the C/30 was a single-shot, semi-automatic anti-aircraft gun serves the purpose for our Anti-Air.  Attached are Images of the highlighted guns. 

http://i61.tinypic.com/1zq7m6v.jpg
Is the SK C/28. (http://en.wikipedia.org/wiki/15_cm_SK_C/28)

http://i58.tinypic.com/2ez1g7l.jpg
Is the SK C/30 (http://en.wikipedia.org/wiki/3.7_cm_SK_C/30) Where its is serving as its current function as Ant-Air as intended.

Thanks again.  This is just a minor fix that should be made, because its Bismarck was truly made for.