<Tr> <Th> NRHP reference #</Th> <Td> 99000609 </Td> </Tr> <Tr> <Th> Added to NRHP </Th> <Td> June 3, 1999 </Td> </Tr> <P> SS United States is a retired luxury passenger liner built in 1952 for United States Lines . Built at a cost of $79.4 million ($733 million in today's dollars) the ship is the largest ocean liner constructed entirely in the US and the fastest ocean liner to cross the Atlantic in either direction . She was designed by American naval architect William Francis Gibbs, and could be turned into a troopship should the need arise . The United States never was involved in any wars but was operated uninterrupted in transatlantic passenger service until 1969 . In the following two decades she went through several different owners, all of whom tried unsuccessfully to make the liner profitable . Over time the ships fittings were sold at auction, and repairs were made that left her almost completely stripped by 1994 . Two years later she was towed to Pier 82 on the Delaware River in Philadelphia where she remains today . </P> <P> Since 2009, a group called SS United States Conservancy has been trying to raise funds to save the ship . The group ended up purchasing her in 2011 but has had a few of its plans fall through which included a "multi-purpose waterfront complex". As the group ran out of money in 2015 it began looking at potentially scrapping the ship, but more donations came in which extended fundraising . This has happened more than once since as the group continues to look at redevelopment plans . The United States still retains the Blue Riband for crossing the Atlantic Ocean as a passenger liner in regular service with the highest average speed . </P>

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