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Its common knowledge that the Number 13 Class was nearly cancelled in 1922 for Washington. However the Japanese Navy got its way and cancelled the Nagato Class instead and scrapped the (then) new Fuso class ships to meet the Treaty. They only built 3 out of the 4 planned (Yamato, Musashi, and Shinano) by saying they were 35,000 tons when in reality they were nearly 48,000 tons. The fact that the deception was not discovered until later caused much embarrassment and caused a mini arms race in the late 30's when a spy found the specs. What if the Japanese had not risked it in 1922 and had built the Nagato class instead? https://en.wikipedia.org/wiki/Number_13-class_battleship