Reduction of NOx, SOx and CO2 emissions of the vessels over the years
Since 2007, Evergreen has managed to reduce nitrogen oxide emissions by almost 60%, sulphur oxide emissions by almost 50% and carbon dioxide emissions by almost 40% by reducing the vessels’ speed, output and other actions. The emissions were monitored and calculated (g/TEU*km) according to the related data from the ships’ consumption quantity reports.
The nitrogen oxide emissions are based on engine emission values, output and running hours of the main engines and generator engines. The sulphur oxides emissions are based on fuel consumption – including all fuel types and all onboard consumption such as diesel and heavy fuel for main propulsion engine, auxiliary engine and other functions – and the corresponding sulphur content of each fuel type. The carbon dioxide emissions are based on the fuel consumption.
Vessel design matters – high energy efficiency with the right equipment and engines
Evergreen has put the Energy Efficiency Design Index into practice since their L-type shipbuilding project. All of the 30 L-type ships are certified according to the index. The index is a technical measurement for new ships that aims at promoting the use of more energy efficient and less polluting equipment and engines. EEDI also requests that the CO2emissions of newly designed container vessels with deadweight no less than 15.000 tons should be reduced by at least ten percent. Accordingly, Evergreen’s new B-type vessels are equipped with electronic-controlled fuel injection engines to comply with EEDI. Evergreen’s new coming G-type, 18.000 teu vessel will produce 7 % less CO2 than current engines. The new G-type vessels will be in service starting from year 2018.