Sailing Vessels by Loading Capacity (Koku) (1928-1937) : Statistical Yearbook of Imperial Japan 58 (1939) Table 187

PERIOD: Japan proper, 1928 year-end to 1937 year-end. Korea, 1933 year-end to 1937 year-end. SOURCE: [Reports by the Ministry of Communications; Statistics by government offices, overseas territories of Japan].

时期：日本本土，1928年年末至1937年年末；朝鲜，1933年年末至1937年年末。来源：[通信省报告；政府机关及日本海外领地的统计数据]。