yes, i am targeting a specific boat, U-181. not sure about all of them having 2.2's, im almost positive the U-181 had 2 twin 2.2's and a single mounted 3.7 cm on the aft wintergarten. the 3.7 exploded killing the cook and wounding 2 others on its longest patrol (206 days). the third photo in the group above was taken on board U-181 and you can see the 2.2's.
glad to see i wasnt the only one who sees the tower differance.
i was just gonna throw a IXC tower on it. glad i checked my referances again. nothing i dislike more than a sub with the wrong tower on it. thanks Sam!