A rendering of the DDG-1000 Zumwalt, the U.S. Navy's next-generation destroyer, which has been funded to be built at Bath Iron Works. AP/Bath Iron Works BATH — With Saturday's christening of the last-in-a-series Arleigh Burke-class destroyer, shipbuilders at Maine's Bath Iron Works are turning more of their attention to construction of a larger, stealthier and more expensive warship that will be like no other built at the shipyard. The shipyard is wrapping up the original production run of Burkes as it shifts production to three next-generation destroyers, the largest surface warships to be built in Bath. Already under construction, the...