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按船籍统计海上商船队拥有量世界前二十位的国家或地区（１０００总吨及以上船舶，截止１９９８年１月１日）位次船籍国或地区合计艘数（艘）总载重吨（万吨）平均船龄（年）本国旗船艘数（艘）总载重吨（万吨）平均船龄（年）外国旗船艘数（艘）总载重吨（万吨）平均船龄...
By ship statistics Marine fleet ownership Top 20 countries or regions in the world (ships of 1000 gross tonnage and above, as of January 1, 1998) Counts Countries or regions Total Number of vessels Total DWT Million tons) Average age of vessels (year) National flag ship number (unit) Total load unit tonnage Average age (year) Foreign flag ship number (unit) Total unit tonnage .