Yeah. I worked in the industry for a few years (shout-out to SIU!) Between containerization, more reliable cargo liner service, and passenger airlines, we'll probably never see the likes of SSUS again. There's simply no reason that a non-military ship needs to go that fast for that far.

There's easily a whole Ken Burnsworth of documentary material about the age of shipping epitomized by the SS United States and the end of that age.