Technical information would spread, as Parsons steam-turbine practice had, but each navy would convert that knowledge into production at a different speed. The United States possessed the industry to catch up once Congress funded the Navy, while Germany would have to finance another demanding engineering program amid existing shortages. Japan's concentration of yard and industrial capacity on the Yamato class would make a parallel turbine effort especially difficult. Britain's advantage is therefore measured in several development generations rather than treated as a permanent secret monopoly.
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Rival navies face different barriers to matching Britain
American funding politics, German development costs, and Japanese shipbuilding priorities shape how quickly each fleet could answer a British turbine lead.