If you saw a massive ship docked at your local harbor, you might not be able to immediately discern exactly what type of ship it is at a glance. Specifically, is it an ocean liner or a cruise ship?

This story was updated with news of the ship's arrival in Alabama. The last voyage of the SS United States, a long-retired and once-glamorous ocean liner bigger than the Titanic and the fastest ever ...

Cruise ships are one of the best luxury vacations you can take, offering the experience of a full-fledged resort while taking you to exotic locations. The biggest cruise ships feature enticing ...