Why new Second World War Darings would not fit a modern fleet

How would the Royal Navy use a fleet of brand-new Second World War Daring-class destroyers?

Probably as museum ships rather than operational assets; modernising their hulls and conventional steam plants would not be worthwhile.

A newly arrived Daring would still be a small hull filled with equipment and an oil-fired steam plant designed for another era. Operational service would require new machinery, weapons, sensors, and support arrangements, leaving little return for the reconstruction effort. Nuclear-submarine crews do not solve the manpower problem because running a reactor-based steam plant demands different skills from balancing oil-fired boilers. The panel therefore sees preservation as a museum ship as more plausible than attempting to force the destroyer into a modern fleet role.