In this paper, I considered the progress of mechanization in port area during the Interwar period and the process of reorganization.
Chikuho area, the northern part of Kyushu, is the biggest coal mining area in Japan. Most of the coal was loaded into ships at Wakamatsu port to be transported. In cargo handling industry in Wakamatsu port, a structure of subcontract was formed. It was composed by members as follows; shippers(coal mining companies or coal merchants), stevedoring contractors, “Kogashira”(master of stevedoring) and “Nakashi”(stevedore). Around 1930s, a movement of reorganization by mechanization rushed into the cargo handling industry in Wakamatsu port area. However, as a result of my analysis, it was clarified that the structure mentioned above was maintained.
In Chikuho coal mining industry in 1920s suffered by depression, inefficient loading operation and its high cost came to be recognized as serious problems. Therefore, big shippers such as Mitsui Bussan and Mitsubishi Kogyo produced machinery for loading operation to prompt speedy loading and to lower the costs. At the same time, they limited the number of stevedoring contractors and “Kogashira”. On the other hand, they strengthened the business relationship with the rest of them.
Stevedoring contractors were forming closer relationships with shippers and that made them stipulate their responsibilities at loading operation. In the process of stipulation, triangular conflicts between stevedoring contractors, “Kogashira” and “Nakashi” were gradually surfaced in cargo handling business. Under the situation mentioned above, stevedoring contractors expressed their strong will that they would protect “Kogashira” and “Nakashi”. The expression led the their trust to stevedoring contractors and that allowed the stevedoring contractors to maintain their base for their existence.
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