Crews will spend about six months cleaning the 1,000-foot vessel and removing hazardous materials as they prepare it to eventually be sunk off Florida's Gulf coast.

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.

The SS United States has completed its voyage from Philadelphia to Mobile, Alabama, where it will be prepped to become part of the world's largest artificial reef.

The SS United States completed its long trip from Philadelphia to the Port City on Monday, but in many ways, its journey is just beginning.

The SS United States has completed its voyage from Philadelphia to Mobile, Alabama, where it will be prepped to become part of the world's largest artificial reef.