a lot of gun=a lot of firepower
but,if this built in real life the enemy would be very easy to detonate the magazine

Its like putting this battleship (swordsman) versus the SR-2 (modern bomber). You got thirteen Turrets, all which are stacked up close together. if even just a tiny shell explodes a turret, It will cause a chain reaction that will kill all those on board. and also, the ship is basically a submarine without ballast tanks. Due to the heavy weight and sheer size, it would sink as soon as it is laid to sea trials. the worse part, is to keep it afloat, you would need the molecular composition of the battleship itself in square metric units, would have to be sustained in the matter of space because of the decreased atomic polarity of the gravitational potential energy. you would have to divert all of your nations resources and more to even get this to work. Plus, since the shells can lob up to 12,000 pounds of TNT, it would destroy and cut the battleship in half. and plus, since the turrets are so close together, you would need to have all of them pointed up to not jam the rotational polarity of the battleship turret. the positive side of that is that you can shoot everything into pieces with all those gun turrets, and since you have tons of armor put on the important sides of the ship, You will be fully protected.  but since armor adds so much weight, it takes up 60% of the ships mass. and according to my calculations, your battleship will weigh up to 277,000 tonnes. so, create a new battleship that is lighter, has less gun turrets, and most importantly, armor the most critical sides of the ship.

I like the idea of massive ammounts of guns on a ship, but the design of it needs some work. But I can imagine this as highly flamable with the amount of ammo needed for all the guns. If one of those of 39 barrels explode, the one ship is toast since they are all close together, itd cause a chain reaction. I think in real life, the ship would have to be ridiciucolusly huge to hold all these heavy guns. The Yamato and Iowa battleships have to be huge and long and they only had 3 main guns. Honestly it looks kinda of plain with all the guns in the same arrangement pattern. I think if you had some on the sides or stacked on top. I think you may have been influenced by the venator or star destroyer as you have side wings and the bridge at the back xD. Also the sides of the ship are general straight and flat. Maybe if you made it wider, you can make it a gun platform, instead of all those guns parallel to each other spread them out with the platform. Also this battleship is too big of a target, I don't know about the armor, but I can just imagine a torpedo making a hole in the side and the whole ship flips over to that side and its abandon ship time. The positive side is that there is basically 4 battleships combined into 1 battleship causing an overload of the firepower. No planes or ships in range will escape being blown up instantly. It has a helicopter pad?(why not) It's intimidating with all the guns. Well this has been my honest review. Good effort, but can be better.

I literally cannot count the number of guns on this ship, which means that it is totally b@da$$. Good work.