The SS United States, a retired ocean liner that became a Philadelphia waterfront staple, is on its way to a new home in Okaloosa County, Florida, to become part of an artificial reef.

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.