CO2 Emissions Calculator This summary page will provide you with the Lowest CO2 Emission route option. For other option, please click hyperlink "Detail" under More Routes. Export To Excel Preview     Note: *OOCL CO2 Index indicates the average carbon dioxide (CO2) emitted per operating unit measured in kg CO2/TEU-km or kg CO2/TON-km. For vessels, indices are calculated using actual fuel consumption, actual distance sailed and nominal vessel cargo capacity. Cargo capacity is represented by two different unit systems, TEU (Twenty-foot Equivalent Unit) and TON (cargo weight), thus translating to two options for users to calculate emissions. (Further details in FAQ) For enquiry, please contact CO2ENQ@OOCL.COM.