Sea cargo transport baselines 2018
These baselines are based on data available in NTMCalc 4.0, literature reviews and expert interviews. The settings aim to reflect on general sea transport. In general we recommend use of real data if available at sufficient quality. NTM default data are conservatively assessed and should if used thereby not enable low emission calculations. Furthermore they should promote transport suppliers to present their real data in relation to NTM default data, hence being used in the transport service procurement process. Providing default data for sea cargo transport will by definition entail elements of incorrect emissions and energy use assessment. The main reason is that ships more or less are individual units with its specific performance regarding emission and energy use. The below data is based on NTMCalc 4.0 and includes the original design based data where modifications regarding speed reductions carried out are not taken into consideration. In order to compensate for this fact the IMO assessment on these actions has been added to the data as fuel consumption reductions. In this respect the user has a choice of calculating conservatively (using design data) or using adjusted numbers suggested in the table. For a more specific calculation it should be carried out based on real data from supplier or actual settings of ships used in NTMCalc.
REDUCTION OF GHG EMISSIONS FROM SHIPS, Third IMO GHG Study 2014 – Final Report, Table 4: Relationship between slow steaming, engine load factor (power output) and fuel consumption for 2007 and 2012. (page 28)
Clean Cargo working group 2013 assessment