Historic SS United States departs from Philadelphia at last

• The boat's final resting place? As an artificial reef on Florida's Gulf Coast.

Catch up quick: The SS U.S. was docked in South Philly for nearly three decades.

• But a rent dispute with the pier's owner sealed the boat's fate.
• After Florida's Okaloosa County bought the ship for $1 million for an artificial reef, moving it turned into a long, delayed ordeal.
• And a last-ditch plea to President Trump couldn't save it.

Fun fact: The 990-foot-long ship carried four presidents across the Atlantic since setting sail on its maiden voyage in the early 1950s.