Carbon dioxide emissions from vessels’ main and auxiliary engines, calculated based on bunker fuel from the Automatic Identification System. Figures have been rounded.
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Global shipping COâ‚‚ emissions 2022, by ownership country
China was the ship-owning country with the highest carbon dioxide emissions in 2022, at *** million metric tons (MtCOâ‚‚). Japan followed closely in second place, with emissions of *** ²Ñ³Ù°ä°¿â‚‚. While emissions from vessels owned by Japan increased by *** percent between 2012 and 2022, those produced by China-owned ships increased by *** percent. The ** ship-owning countries with the highest emissions in 2022 produced more than *** ²Ñ³Ù°ä°¿â‚‚.
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UNCTAD. (September 27, 2023). Maritime sector carbon dioxide (COâ‚‚) emissions in 2022, by vessel ownership country (in million metric tons) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 25, 2026, from /statistics/1487738/shipping-emissions-worldwide-ship-owning-countries/
UNCTAD. "Maritime sector carbon dioxide (COâ‚‚) emissions in 2022, by vessel ownership country (in million metric tons)." Chart. September 27, 2023. ÌÇÐÄÆƽâ°æ. Accessed July 25, 2026. /statistics/1487738/shipping-emissions-worldwide-ship-owning-countries/
UNCTAD. (2023). Maritime sector carbon dioxide (COâ‚‚) emissions in 2022, by vessel ownership country (in million metric tons). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 25, 2026. /statistics/1487738/shipping-emissions-worldwide-ship-owning-countries/
UNCTAD. "Maritime Sector Carbon Dioxide (Coâ‚‚) Emissions in 2022, by Vessel Ownership Country (in Million Metric Tons)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 27 Sep 2023, /statistics/1487738/shipping-emissions-worldwide-ship-owning-countries/
UNCTAD, Maritime sector carbon dioxide (COâ‚‚) emissions in 2022, by vessel ownership country (in million metric tons) ÌÇÐÄÆƽâ°æ, /statistics/1487738/shipping-emissions-worldwide-ship-owning-countries/ (last visited July 25, 2026)
Maritime sector carbon dioxide (COâ‚‚) emissions in 2022, by vessel ownership country (in million metric tons) [Graph], UNCTAD, September 27, 2023. [Online]. Available: /statistics/1487738/shipping-emissions-worldwide-ship-owning-countries/
