The first in the Navy’s new class of supercarriers is likely to end up costing a lot more than anticipated: The U.S. Navy has estimated a worst-case cost overrun of as much as $1.1 billion for the aircraft carrier USS Gerald R. Ford, the service’s most expensive warship. The carrier is being built by Huntington Ingalls Industries under a cost-plus, incentive-fee contract in which the Navy pays for most of the overruns. Even so, the service’s efforts to control expenses may put the company’s $579.2 million profit at risk, according to the Navy. A review of the carrier’s rising costs...