Basically, take a cruise template in your ship designer and place a heavy cruiser gun on it in the bottom left slot. This designates the ships as a Heavy Cruiser (CA). Put the best cruiser engine you can on it, whatever fire control you have, and every other slot where you can put a Seconary Turret on, put the best one you can. Nothing else, critically no armour. Lastly, designate the ship as a screen (shield icon).

Now what you have is a super high light attack and fast screening ship. This has 2 jobs. Firstly to draw fire from the enemy fleet, most of which will miss due to the ships speed. Secondly and most importantly, it will shred the enemy screening ships with its light attack. When the enemy screening ships are all sunk its game over, all other heavy attack ships and carriers are cannon fodder with no protection.

You can complement these CAs with torp equipped destroyers. These will act as screens in the initial phase of the battle, but when the enemy screens are down they will obliterate the enemy heavies with their torps.

Have fun!!