Everyone knew this was coming.I got a 'head's up' it was 'here' at work today.
It was a conscious decision by the powers that be to break the linkage between the DDG-1000 and CVN-78 radar development and acquisition. You can read the whole report at the FAS (spit) site here, but the devil is in the footnotes on Page 9:
The information paper further states that of the $208 million in cost growth on the dual band radar, $54 million is a consequence of a decision to remove a part of the dual band radar on the Navy’s three Zumwalt (DDG-1000) class destroyers, and the remaining $154 million is due to cost growth in CVN-78-unique installation, integration, and test requirements for the dual band radar. For more on the decision to remove a part of the dual band radar on the DDG-1000 destroyers, see CRS Report RL32109 Navy DDG-51 and DDG-1000 Destroyer Programs: Background and Issues for Congress, by Ronald O'Rourke.
Note that I do not question whether or not the change was 'wise'. Some change is necessary and has benefits worth the costs to the users. I only note these are the kind of cost increases that 'changing minds' generate, and we have no idea how many of the other costs are due to 'changes' in direction.