Why HMS Acheron's high-pressure steam trial did not spread

Why did the Royal Navy not retain Acheron's high-pressure boilers while changing its troublesome turbines?

The proposed explanation is inadequate funding and institutional support, which prevented further turbine work and a possible development toward 700 psi.

The question distinguishes apparently successful high-pressure boilers from problems in Acheron's experimental Parsons turbine and shaft arrangement. Funding and insufficient senior support are offered as the explanation for failing to continue the work with different turbines. After an initial confusion with the 1911 namesake, the ship is identified as the Acheron ordered in 1928. Its 500-psi, 750-degree-Fahrenheit installation was too late for Nelson and Rodney, but could have influenced machinery built from about 1931 onward. A 700-psi development is treated as a possible next step, not an achieved fleet standard. Sustained cooperation among Parsons, Brown-Curtis and boiler manufacturers could have carried the work further. Thornycroft and Yarrow are named as another possible partnership for developing high-pressure steam machinery.