The historic vessel is expected to be sunk off the Florida coast and turned into the world's largest artificial reef.

In the next few days, the SS United States will be towed out of the Delaware River for the final time. Here are the details. Often called "America's flagship," the SS United States is a marvel of engineering, the longest and largest ocean liner ever built in America and holder of a transatlantic naval speed record that remains unbroken to this day.