It is true that the US easily leads in preserved and mothballled future preservations but they have lots of waterways capable of putting a battleship down to keep safe.

Good point, but it’s not as though the UK’s waterways, and maritime facilities are full, exactly. That’s not the limiting factor. After all Scotland had a relatively complete W.W.I submerged Navy at Scapa Flow!

Likewise scotavia makes some good points about the costs and issues of large ship preservation, but none of those explain the significantly better situation in the US. Far more important is a higher affluence among the interested, tax breaks, and a greater desire to promote and commemorate the USN’s achievements, compared to the UK’s population’s lack of ‘ownership’ of the history of the RN.

As to the Vulcan comparison, it’s an easy one, but hardly similar. The complexity is of a different order, the risk analysis is entirely different and the potential public interaction is different also. The cash burn and certification issues are different too. Both need a lot of dedicated enthusiasts though!