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Abstract

The authors have conducted research on the current state of use of deep sea water and its effectiveness in a hygiene-management fishing port. Deep sea water-intake facilities have been constructed in 17 fishing ports and districts. Among them the use of deep sea water in Rausu and Kumaishi is designed to keep fish fresh and hygiene in the quality and hygiene-management fishing ports. This paper has clarified the effectiveness based on the results of the tests regarding freshness, buyer's consciousness inquiry by AHP method and the changes in quantity and cost of ice and clean low-temperature seawater. In Rausu Fishing Port the quantity of ice was reduced, while in Kumaishi walleye Pollock is exported to South Korea by land and sea after washed in deep sea water. Consequently, deep sea water serves the rise in the value of fishery products as well as the preservation of their freshness.