We woke up to this view from the aft deck of Peregrinus this morning: the airplane carriers USS Harry S Truman (CVN-75) and USS Theodore Roosevelt (CVN-71). Not clear whether the $4.5 billion a piece price tag includes the 90 aircraft on board each; probably not.
Also in the picture, an Euro-style carrier (helos and Harriers only), possibly USS Wasp. But the helo/Harrier carriers are only $750 million and only carry 40 or so craft.
It would be very nice if, like the aircraft carriers, Peregrinus also had clean, emissions-free nuclear-powered engines on board: we would only have to fuel up every 20 years.