To look at some semi-realistic numbers for a moment, assuming that this carrier would be comparable in mass to a Nimitz or Ford class carrier (about one hundred kilotons), then it would require about 300-odd megawatts just to hover, and about twice that to realistically maneuver and to operate its other systems. In other words, it would require about triple the Nimitz class's 190 MW reactor output. This would be theoretically feasible if the US government cared to spend the twenty or more billion dollars necessary to design and build it. However, it would be just as vulnerable as a surface carrier with regards to enemy missile and artillery fire, while its main advantages would be speed compared to waterborne ships and the ability to operate away from the ocean.