Key Points and Summary - Japan’s Design A-150 “Super Yamato” was meant to be the ultimate battleship: up to 70,000–90,000 tons, six 510 mm guns, huge armor belts, and 30-knot speed to crush any U.S.

In January 1936 Japan announced its intention to withdraw from the London Naval Treaty, accusing both the United States and the United Kingdom of negotiating in bad faith. The Japanese sought formal ...

Summary and Key Points: After building the Yamato class, the largest battleships ever completed, Japan’s Imperial Navy began designing an even greater successor, the A-150 or Super Yamato, around 1938 ...