The $2.5 million bid from Bay Ship & Yacht Co. won the federal government auction. The firm was interested not so much in the space-age stealth ship but the barge that houses it, which will be converted into a drydock, reports 'The Sacramento Bee'. Sea Shadow was built in 1985 by Lockheed Martin in Redwood City, under contract with the U.S. Navy, for a price of $50 million. The goal was to test whether radar-evading technology proven in fighter aircraft could also be applied to ships. The experiment was a success.