Excellent work, and I generally like all ships posted here. As for the carrier, may I suggest raising the bridge structure, one or two decks, as it seems too low.
The Mk.53 GFCS is in the US parts sheet or can be found on many USN ships. The MRS-3 is also on the parts sheet of the RN, and again many RN ships.
ah-HA. Yup, I found them now. Thanks.