Only two of the Pearl Harbor "battleship row" ships never returned to service (Arizona and Oklahoma -- although the latter, under tow for scrap, sank enroute in 1946). Three others were named for, basically, land-locked states: Tennessee, West Virginia and Nevada. The Tennessee and West Virginia were scrapped in 1959. The Nevada was left radioactive after atomic tests but still afloat; it was deliberately sunk in 1948 (the Pennsylvania survived Pearl Harbor, contributed more firepower against Japan than any other ship and also survived atomic blasts; radioactive, it was scuttled). So much for memorials.
The same happened with the entire Royal Navy bar the aforementioned HMS Belfast. As nice as it may be it really is not economically viable to have an entire fleet of battleships maintained just for a memorial and In my opinion your lucky to have as many as you do.