In 2003, the International Maritime Organization (IMO) initiated developments related to the reduction of greenhouse gases from ships. The recent focus has been on the EEDI which is conceived as a future mandatory newbuilding standard. The EEDI compares theoretical CO2 emissions and transport work of a vessel (gCO2/(t*nm)) and will eventually be benchmarked against an IMO-set requirement.
As the individually attained EEDI for a ship represents the basic energy efficiency of a design, it can be used as a benchmark within an operator's fleet as well as for a comparison against a competitor's fleet. Benchmarking against the ship's operations is possible as well. This means that the determination of the EEDI also makes sense for ships already in service, provided all data for a complete EEDI Technical File are available.
For the verification of the EEDI, a so called technical file was established, which summarises all relevant technical data, and documents the calculation procedure towards the final EEDI value. Some issues in this context require more attention from the IMO and, therefore, identified items have been forwarded to the German flag state administration for possible consideration at future IMO meetings.
Through research and recent contributions to the IMO's development of the EEDI on behalf of the German Ministry of Transport, Building and Urban Development, GL has developed unique competence in the interpretation and verification of the EEDI. With the introduction of the EEDI certificate, GL has extended its portfolio of services on energy efficiency of ships, ranging from certificates to consultancy, which is provided by GL's FutureShip subsidiary.