Complexity in building an all-electric ship has forced General Dynamics Bath Iron Works and the U.S. Navy to delay delivery of the first two Zumwalt-class destroyers.
Photo by SurfaceWarriors 
Instead of summer, the first ship of the class, DDG 1000, will now be delivered this November. The second ship will reach the U.S. Navy exactly a year later. Only the last ship is still scheduled for delivery in December 2018.