If you want speed and stability along with the endurance then you are going to end up punching a pretty big hole in the ocean and that requires a lot of energy, which means fuel which in turn means a bigger ship and a bigger hole in the ocean. And the ability to punch a big hole costs money.
Remember though, steel is cheap and air is free......The costs of a modern warship is better reflected by what you "put in it" then the dimensions and volume.
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