After months of delays, the historic SS United States ocean liner finally moved out of Philadelphia today on a new voyage as it prepares to become the world's largest artificial reef off the Florida coast in the Gulf of Mexico.

The SS United States has finally left Philadelphia. Driving the news: The largest ocean liner ever built in the U.S. was towed down the Delaware River on Wednesday, gliding beneath the Walt Whitman Bridge as part of a two-week journey to Mobile,

After months of multiple delays, the SS United States finally left its longtime home of Philadelphia just before 1 p.m. ET Wednesday. The storied ocean liner’s next stop is Mobile, Alabama, where it will be prepared for its final mission – to become an artificial reef off the coast of the Florida Panhandle.