I can’t remember if I’ve included a LinkSwarm link on the problems of Zumwalt-class destroyers, which the navy killed after only three of the projected thirty-two ships were built. This video offers a solid overview of the issues that led to the cancellation.
Zumwalt-class destroyers turned out to be quite stable, and the stealth design worked well, but they require far more personnel to run than originally specified, and the small number of Zumwalt class actually built resulted in the radical new shore-attack munitions costs spiraling to more than $1 million for each projectile, or more than the cost of a Tomahawk cruise missile, which offers 15 times the range and 30 times the payload.
Other problems include having to retrain crew to take into account the unique shape and handling characteristics:
The combination of the Zumwalt ’s size and inability to switch quickly from ahead to astern propulsion or vice versa (because of fixed pitch propellers) creates substantially more inertia than on a smaller vessel, a characteristic magnified by the large sail area.
…The outward-sloping tumblehome design creates the illusion that the ship is farther away from the pier than it is.
…All the mooring stations are internal. (it) makes it impossible for the bridge to see progress in the mooring stations.
…A relatively low height of eye of 35 feet, along with large gun mounts on the forecastle, result in a substantial shadow zone of 469.2 feet dead ahead.
If all this is disheartening, realize that technical innovations have just as many teething problems for the Chinese navy as well (and probably much worse quality control). I would say the Russians as well, but almost all of their much-hyped “superweapons” turn out to be pure vaporware.