PHILADELPHIA (AP) — The SS United States is sending out what may be its final distress call.

The conservancy working to secure a home and purpose for the 990-foot-long ship tells The Associated Press that it could be sold for scrap within two months unless they can raise $500,000 immediately so they can continue negotiations with several parties.

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Money and time are running out for the historic ocean liner, which carried princes, presidents and celebrities across the Atlantic Ocean in the 1950s and 1960s.

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It has been berthed on the Philadelphia waterfront since 1996.

It costs $80,000 a month just for the ship’s mooring, basic maintenance, insurance and security expenses.

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