Abstract
At the time of beginning of the Meiji era, it was thought that the Japanese couldn't construct modern-style and large-scale harbors. However, Isami HIROI perfectly accomplished the construction of the Otaru port. The factor of his success is requested from the entrepreneurial spirit, and it analyzes it from document to which he did.
As a result of the analysis, his knowledge and plan power concerning harbors, pursuit of the economy and efficiency, excellent construction management, and consciousness of limit to nature became clear. Moreover, his spirit to the design introduces from his book “CHIKKOU”.
