What if the United States and Japan built experimental carriers on the same scale as the Royal Navy?
Short answerThe scale would likely cause alarm and prompt a stricter treaty definition of experimental carriers.
NotesEarly British carriers could receive special treatment because they were experimental ships built around evolving technology. A comparable American or Japanese programme on a much larger scale would alarm the other treaty powers. The reaction to Japan's sub-10,000-ton carrier experiments suggests that Washington would press to redefine what counted as experimental. A treaty loophole would survive only while its use remained limited enough for the other powers to tolerate.