assuming 10,000 tons and also assuming 0.1 thrust/weight ratio and also assuming fission fragment fusion generated electricity then the aircraft carrier will consume 1 kilogram of uranium fuel per second, generating over 100 megajoules of energy per second. If 20% the mass of the aircraft carrier is devoted to fuel the aircraft carrier will be able to fly two million seconds = 12 days at a speed of about 200 m/s which means about 200,000 kms. When it is not flying it will float on the surface of the ocean and be able to quickly take off and evacuate.
weight distribution:
1000 tons: fuel
200 tons: nuclear reactors and backup reactors
4000 tons: aircraft
500 tons: turboshaft engines
1300 tons: aircraft fuel
1000 tons: defense systems
suggestions or ideas?