Historic ocean liner could soon become the world’s largest artificial reef POLITICOSS United States to become world's largest artificial reef after spending years in Philadelphia WPVI-TVSS United States prepares for final voyage from Philadelphia to Florida CBS NewsSS United States, pier landlord reach agreement setting in motion ship's future as largest artificial reef FOX 29 PhiladelphiaThe SS United States’ stewards bid farewell to the Philly ship destined for Florida: ‘Bon voyage, you grand lady’ The Philadelphia Inquirer