The purpose of this study is to consider types and distribution of main ports of fish landingIII Japan through landed quantity by kind of fish Main ports of fish landing are identifiedas 235 fishing ports with fish landing of more than 5,000 tons in 1984, when Japanese fishermen caught the largest quantity of fish in the past (Table 1 and Fig. 1).By means of factor analysis. twenty variables about landed quantity of 235 ports (Table 2)are summarized into seven factors (Table 3). Landing of large quantity of sardines or mackerels or saury represented in the first factor is the most commonly chracteristic to the main ports of fish landing in Japan. The ports are classified into ten types, by means of cluster analysis based on seven factors, named from A to J (Fig. 2, Tables 4 and 5).
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