"Gross tonnage" is a measurement of the size of a ship as determined by the "International Convention on tonnage measurement of ships" and is calculated via a logarithmic formula that includes all enclosed spaces of a ship in cubic meters.
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Gross tonnage of inbound vessels at the Port of Tokyo in Japan 2020, by vessel type
In the year 2020, the volume of ocean-going vessels entering the Port of Tokyo amounted to a gross tonnage of *** million approximately. Their total number added up to around *** ships.
In contrast, the inbound volume of coastal trading vessels accounted for a gross tonnage of **** million.
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Tokyo Metropolitan Government. (April 25, 2022). Gross tonnage of vessels entering the Port of Tokyo in Japan in 2020, by type of vessel (in millions) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/1180479/japan-tokyo-port-inbound-gross-tonnage-by-ship-type/
Tokyo Metropolitan Government. "Gross tonnage of vessels entering the Port of Tokyo in Japan in 2020, by type of vessel (in millions)." Chart. April 25, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/1180479/japan-tokyo-port-inbound-gross-tonnage-by-ship-type/
Tokyo Metropolitan Government. (2022). Gross tonnage of vessels entering the Port of Tokyo in Japan in 2020, by type of vessel (in millions). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/1180479/japan-tokyo-port-inbound-gross-tonnage-by-ship-type/
Tokyo Metropolitan Government. "Gross Tonnage of Vessels Entering The Port of Tokyo in Japan in 2020, by Type of Vessel (in Millions)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 25 Apr 2022, /statistics/1180479/japan-tokyo-port-inbound-gross-tonnage-by-ship-type/
Tokyo Metropolitan Government, Gross tonnage of vessels entering the Port of Tokyo in Japan in 2020, by type of vessel (in millions) ÌÇÐÄÆƽâ°æ, /statistics/1180479/japan-tokyo-port-inbound-gross-tonnage-by-ship-type/ (last visited July 31, 2026)
Gross tonnage of vessels entering the Port of Tokyo in Japan in 2020, by type of vessel (in millions) [Graph], Tokyo Metropolitan Government, April 25, 2022. [Online]. Available: /statistics/1180479/japan-tokyo-port-inbound-gross-tonnage-by-ship-type/
