My brother sailed aboard the SS United States from France back to the US in 1969 or 1970. I would surprised if this ship ever went anywhere under its own power post 1970-71-72. Indeed, googling “last voyage SS united states” it was effectively abandoned in 1970.
When I was a kid my aunt sailed to Europe every year on a different country’s ship, and we’d go to see her off. I remember her traveling on the United States, the Ile de France, one of the Cunard Q’s, the Christofo Columbo. That was one helluva way to travel! And just being on the ship, seeing the opulence was wonderful fun for a kid who lived an entirely middle-working class existence. Hadn’t even thought about it in years till this thread tonite.