Dunno of this was your design or not... but there's a few pretty big flaws... like the fact that the main top and bottom turrets can't rotate enough for a broad side, also the placement of the guns actively prevents that, making it useless outside of back line formation. Which is not what a cruiser is supposed to be... Most cruisers are covering vessels, being lightly armed and fast, they can maneuver easily in a formation and generally (at least in a navel sense) will carry a few torpedoes for engaging larger vessels. If you where designing this ship, I'd suggest less torpedo bays to reduce weight, and the ability to broadside an enemy vessel o:

Of course this is all my opinion ^.^ I don't mean any harm.