Even the need for regular replacement went away long ago. Our current (old) designs get refueled only once, and new ships don't get refueled at all (the core la

Even the need for regular replacement went away long ago. Our current (old) designs get refueled only once, and new ships don't get refueled at all (the core lasts as long as the hull does). They do all need regular maintenance, but that's true for all U.S. warships.