What're the FCS things for?
FCS = Fire Control System... Mainly turret side FCS is optical, and allows gunners to make adjustments when the central FCS computers are down in combat. Normally the central FCS station/computer figures out the angles and charges for each gun, sends the orders, then the turrets align, load, and fire.
And Thadius, then i need the old model made giant, the one we have has no FCS stations on the side, and little indented lines across it.