Yes, it is a shame how few of those old ships were saved from the scrapyard, Especially the ones with long histories like the Yavuz Sultan Selim, or one or two of the WWI vintage British BBs, HMS Warspite would've been a worthy museum ship, so would most of them really.
The US has understood this somewhat more, they seem to have a lot of vintage Capital ships lying around, although even they couldn't save all the notable ships and made some sad oversights in not saving at least one of every class, that's what I would've decided on
Meh, If I someday win a lottery or two I might have someone build me a replica of some famous ship as a yacht
any suggestions on which
As for south american BBs... I think the Argentinians had 2 built in the US
And post WWII we (the dutch) sold two of our old-ish cruisers, one to both Peru and Chile, that way the arms race was kept equal