The SS United States Conservancy, a group devoted to the preservation of a historic cruise liner that has been out of commission since 1969, proposed Monday that the ship become a floating casino docked alongside the site of the troubled Philadelphia Foxwoods casino project. On Monday the group unveiled the results of an extensive feasibility study to use the SS United States as a casino -- a proposal, they determined, that would cost about the same as a land-based development. "For far too long, the Foxwoods site has been the subject of controversy," said conservancy president Susan Gibbs in a statement. "We are hoping this new vision and world-class design is one that Philadelphians could rally around." Gibbs is the granddaughter of Philadelphia native William Francis Gibbs, who designed the ship. The vessel would provide approximately 650,000 square feet of space and could be docked alongside a 10-story parking garage with two stories of permanent gaming space, according to one proposal outlined in the Philadelphia Inquirer. Neither officials from Foxwoods nor Caesars Entertainment, which is in negotiations to manage the casino project, have publicly commented on the proposal.