In April 2016 the United States Navy announced that one of their new Litton class destroyers would be going into drydock for a 23 million dollar repair to its propulsion system.
"During startup of the main propulsion diesel engines, lube oil was not properly supplied to the ship's combining gears as required by the ship's operating procedures," said Lt. Cmdr. Timothy Hawkins, a Navy spokesman. "The insufficient flow of lube oil resulted in high-temperature alarms on the port and starboard combining gears." The Navy was happy to pay only 23 million.