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Topics of Japanese history-Shimanami Kaido

(by S. Miyauchi, Professional Engineer, Doctor of Engineering, JSME Fellow)

<松山市と島並み海道 Matsuyama city and Shimanami Kaido>

Matsuyama and Shimanami Kaido islands crossing Setouchi Inland Sea (瀬戸内海) are the base of the first sea power in Japan (Iyo sea power), from Baekgang to Hideyoshi (秀吉) era. They participated in above defensive war against Mongolia from the castle near my hometown house in Matsuyama.

In the Edo era after Hideyoshi, big castle was built as a base for Midwest Setouchi Inland Sea, but they were spoiled by cultures and easy life of the castle town blessed by Far East Peace. This big castle strategy was surely hit in Choshu War of 1866 because they first attacked to Choshu, crossing the sea. But they were only defeated at first.

Shimanami Kaido is globally popular as a cycling road crossing Setouchi Inland Sea from Imabari City (今治市) to Onomichi City (尾道市) in the east of Hiroshima through six islands. (Spans about 70 kilometers). (

Oyamazumi Shrine (大山祇神社) in Omishima island (大三島) is the ancestor god of Iyo sea power. As a center of their unity and culture, the Renga (連歌, Waka ceremony by many people) was often held. The Court in Kyoto and the Kamakura Shogunate (from 1185 to 1333) regarded Iyo sea power as very important. This power dominated Setouchi Inland Sea which was the largest traffic route and the trade route with China. The court gave a high divinity (Not only the Highest Guardian God but also elder brother of the Goddess Amaterasu who is the Supreme God of Gods and the God of sun and agriculture), and the Shogunate dedicated a number of swords and armors (about 40% of National Treasures and Important Cultural Properties in Japan). Many old and big camphor trees (estimated age 3000 years) in the grounds and the calm sea in front of the shrine make me feel the original landscape of the Setouchi Inland Sea.

Shimanami Kaido has a lot of big bridges across Setouchi Inland Sea, and I have strong memories about these bridges.My father made basic examination of these in 1938 under so famous Chujirou Haraguchi, chief in Kobe civil

engineering office of Japanese department of the Interior. Also, my mother 's uncle Shinozaki (the bridge director of my prefecture Ehime) worked hard to make these.





宮内 直(技術士、工学博士、機械学会フェロー) 地方公立名門高校の卒業生は人間力と好奇心・地頭が強く伸び代が大。率直で元気で挑戦的、ストレス・逆境に強く、様々の境遇の仕事相手の懐へ初対面でも飛込む。また地方の親達は「子供は何とか国立大学へ」と懸命に働き、子供もその感謝で社会に出て勤勉なので企業に人気。地方創生が最近よく話題になるが、明治の近代化から戦後復興・高度成長は、江戸時代の全264藩(領邦)


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人間、「はい、ここまで」という日は来る。 突然来る(交通事故など)。 一定期間の予告をもって来る場合もある(癌の告知後数か月から数年など。)。 病床に2、3日臥せれば、あっという間の身体の衰えを意識する。 身体、頭、目、手、足を動かしての命である。 「はいここまで」が来るまで、毎日、身体、頭、目、手、足を動かすことだ。 それは試験の1時間と同じだ。一生は試験の1時間だ。 「はいここまで」と言われる


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