I want to keep it within these parameters.
Length, Beam, Draft: 600, 120, 30
I want it to launch and retrieve CATOBAR aircraft as well as a full Marine Heli attack squadron (2 V-22, 4 Chinook, 2 UH-1Y, 8 AH-1Z)
for a smaller nation, Depth Charges could be fitted to light General Aviation aircraft (like a Cesna). And in areas where the water is really clear, the aircraft wouldn't need high-tech detection gear, just Mk. 1 Eyeballs. Littoral ASW on the cheap.