It is good to see that it will be used as an artificial reef for divers. I would not have minded seeing it turned into a museum/restaurant/hotel like what was done with the Queen Mary in Long Beach (went there last year and enjoyed doing so).
Too much time has passed for the SS United States to be converted. It is now over seventy years old! The useful life of an ocean going ship is 20-30 years.
I worked with a radio officer who was part of a group that wanted to keep the United States running as a cruise ship and selling the cabins as condos. This was in the early 1980’s. The project never got off the ground.
the queen mary aggregate experience probably will scare anyone from trying to convert an old commercial liner on this scale for a long, long time.
Unlike buildings, liners aren’t made to last. Trying to convert one to provide an economic function can only work if there is unlimited money to run losses.
Military ships provide a counter-point. The largest I know of is the texas, launched over a century ago - but look into the cost and financing of the drydocking the last year or so.