I just told you why. The procession of history will make that harder for you. https://en.wikipedia.org/wiki/Superfiring
As I said in the post before, and as it says on the Wiki link I provided above, this is the first ship that made use of superfiring turrets in 1899:
![[ img ]](http://i204.photobucket.com/albums/bb219/darthpanda_NL/Shipbucket/FBBHenriIV_zps810d1514.png)
Then, as I also said above, the first ship to make use of main caliber superfiring was this ship in 1908:
![[ img ]](http://shipbucket.com/Real%20Designs/United%20States%20of%20America/BB-26%20South%20Carolina.png)
Plus, you also have to take into account the building methods of the time, material strengths, etc. Just because a ship in 1910 had them, does not mean that a ship in 1895 can have them as well. Those years from ironclad ships all the way up to WWII was a period of rapid development. Just read up on different ships and you'll see that a lot of them were already obsolete when launched. That's how quickly technology progressed in that time.
About the closest you can get to superfiring turrets before that time would be a double-decker turret, like this:
![[ img ]](https://dl.dropboxusercontent.com/s/sdukr4anhv7vodh/Denton_DNSSaarbruckenBB21896.png?dl=0)