Wikipedia says 400,000 samurai: https://en.wikipedia.org/wiki/Samurai#:~:text=In%20the%201870s%2C%20samurai%20comprised,they%20were%20the%20most%20affected http

Wikipedia says 400,000 samurai: https://en.wikipedia.org/wiki/Samurai#:~:text=In%20the%201870s%2C%20samurai%20comprised,they%20were%20the%20most%20affected https://en.wikipedia.org/wiki/Samurai#:~:text=In%20the%20187.... Every Samurai had at least two swords. So at least a million swords. Let's say a sword weighs 1Kg, that's 1000 tonnes of steel. So probably not enough for a battleship, but maybe a small destroyer.