List of submarine museums - WikipediaI don’t think any nuclear sub or surface ship would be suitable as a museum boat from a liability POV alone, especially vessels decommissioned by Russian nuclear safety personnel. Despite being a 40 year military old vessel, there are likely design features that might still be relevant today.
Not aware of any Western SSN(BN) museum boat either.
Just 3 have been preserved as Museums
A lot of sails and a fair few DEs have been preserved,