Global tuna fisheries are among the largest and most valuable marine capture fisheries in the world. As the climate continues to warm, it is critical to understand the scale of this industry’s fuel use and related greenhouse gas (GHG) emissions, enhancing the sustainability of this fishery while contributing to global climate goals.
In 2010, Dr. Peter Tyedmers and Dr. Robert Parker undertook work for the International Seafood Sustainability Foundation (ISSF) to quantify direct fuel use and associated GHG emissions from tuna fishing vessels for the 2009 fishing year. The current study serves as an update to the original assessment, providing a snapshot of fuel use and related GHG emissions estimate of global tuna fisheries and supporting activities as of 2023.
By comparing the current findings with the earlier project results and data published in the literature, this report also aims to provide a sense of the trajectory of fuel use and resulting GHG emissions within tuna fisheries, as well as to identify opportunities for further improvement.
Results are based on an analysis of industry surveys from ISSF’s contact network, reporting catch and fuel use data from 78 fishing vessels and 18 transshipment vessels from 2023. Overall, these vessels accounted for 5.3% of global tuna landings and approximately 9.1% of all tuna transshipped in 2023.
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