I like most of the ship in about the same proportion. It looks nice and is not bad combat wise, its power system is a bit lacking but not too bad with the dimensions you are working with. The exterior is at the point that I have seen across many players' ships where they are just at the cusp of finally establishing their own set in stone style. It could definitely be improved, though you have hit a level that most people on the dock seem incapable of achieving.
Also, that thing is not a grand battleship. Maybe a light battleship, but then again its weapons are not impressive enough to be classed that way. I'd say a cruiser of some sort because it uses too little turrets to be considered a battleship.
I'd give it a 7/10 if I could instead of a 4/5 but this is definitely not a 3/5 so you get lucky with my rating.
For the name, mostly based off the ships scale more than anything ^^
Is there any way i can improve the turrets themselves, most of them are based off another ships because im terrible at making them myself so any feedback there would be helpful too!