A treaty exception for three fast capital ships

What if the Washington Naval Treaty allowed Britain, Japan, and the United States one fast capital ship each?

The exception would trigger demands for compensating tonnage and reshape the survival and conversion of battlecruiser hulls in all three navies.

The proposal cannot be isolated from Renown, Repulse, Tiger, the Lexington hulls, and Japan's Amagi-class program. A workable settlement might allocate separate battleship and battlecruiser totals rather than one exception, prompting Britain to build Nelson-type battleships and F3 battlecruisers while America completes more Lexingtons. Japan then has to decide whether its Kongos consume the fast-capital-ship allowance or give way to new designs. Larger carrier allowances would preserve conversion hulls and keep additional shipyards active through the 1920s. The panel therefore treats the idea as a rewritten industrial and tonnage settlement, not a simple one-ship exemption.