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Guidelines for calculating GHG emission intensity for RoRo ships developed

May 27, 2025

Recently, the Global RoRo Community (GRC), including Eastern Car Liner Ltd., Kawasaki Kisen Kaisha, Ltd., Mitsui O.S.K. Lines, Ltd., Nippon Yusen Kabushiki Kaisha, Wallenius Wilhelmsen ASA, and ClassNK, announced guidelines for calculating GHG emission intensity for RoRo ships, such as car carriers, in conjunction with the international non-profit organisation Smart Freight Centre (SFC), aiming to reduce greenhouse gas (GHG) emissions in the logistics sector. These guidelines introduce a common calculation method, enabling shippers to accurately measure Scope 3 emissions, and will further promote decarbonisation in the shipping industry. The guidelines are known as Deep-sea RoRo Ship Greenhouse Gas Emission Intensity Calculation Methods. Established in April 2024, the GRC comprises mainly major RoRo operators, which account for approximately 80% of the world’s automobile transport capacity. In recent years, interest in carbon emissions (carbon footprint) throughout the lifecycle of products and services has been increasing. But this has not been without challenge, in particular, the accurate measurement of GHG emissions in maritime transport and differences arising in individual calculation methods. The six members participated in the GRC hosted by SFC and developed a standard model for calculating GHG emissions through open discussions, ensuring fairness and transparency with stakeholders involved in RoRo ships (shipping companies, shippers) and third-party verification organisations. The standard model complies with the ISO 14083 and GLEC (Global Logistics Emissions Council) framework and was announced at the recent SFC annual event “Smart Freight Week” held in Amsterdam. Derived from the standard model presented by GRC, it now features as a set of guidelines on the SFC website. In the future, the SFC plans to collect actual data on environmental performance on a ship-by-ship basis and publish average high-precision emission intensity data for the industry. Consequently, the initiative provides a cross-industry first step towards decarbonising global logistics and contributes to promoting measures against global warming, said a release.

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