異国船打払令 The Coast Defense Order

欧米やロシアが18世紀後半から19世紀前半にかけて産業化されると19世紀初頭から世界中で植民地争奪戦を繰り広げ始めました。

Once the Western countries and Russia had been industrialized between the last half of the 18th Century and the first half of the 19th Century, they started aggressively colonizing many countries on globe in the early 19th Century.

当時の日本にも度々異国船が姿を現わすようになっており、幕府は異国船打払令を出して各藩に海岸の防衛をさせるようになっていました。

Since they began showing up on Japan’s seashores as well in the early 19th Century, Bakufu had ordered the Domains to militarily defend the coasts and not to let the foreign crew step on Japan’s soil.

現在の科学技術をもって測量したものと遜色ないほど精緻な伊能忠敬の作った地図を使い、幕府は国家の海岸防衛の計画を効果的に立てることができました。

Bakufu could effectively make their national coast defense plan with Tadataka Ino’s map which was almost as precise and meticulous as the one made with today’s technology.

成功させた家業を1795年に50歳で引退した伊能忠敬天文学を私塾で5年間学びました。

Having succeeded in his family business, Tadataka Ino had retired at the age of 50 in 1795 and been to a private school to learn astronomy for 5 years.

そして、科学的な測量方法を用いて全国を歩いて地図を作ることを志願したのです。

Then, he volunteered to make a map by walking throughout Japan and scientifically surveying the land.