seatec - Finnish marine technology review 2/2012 | Page 12

Control Areas (ECAs) from1 % down to sions. The current requirement for 20% sible due to the most favorable proportion 0.1% by 2015. The latter limit is already reduction will be increased by another 75 of number of carbon and hydrogen atoms required for ships at berth in EU ports and % NOx reduction after the end of 2015. in methane particles (CH4) compared with inland waters. The use of LNG will cut emission of other hydrocarbons. The availability of low sulphur fuel is solid particles and sulphur oxides by almost limited and rising demand is expected to 100%, nitrogen oxides by 85% and car- 10–20% EXTRA COST FOR LNG increase its price uncertainty. IMO’s scheme bon emissions by about 25%. Thus, no ad- Typically, the new ships with LNG propul- for reduction of NOx emissions in ECAs ditional exhaust cleaning installations are sion have an added investment cost of 10– specifies the limits for marine engine emis- required. Reduction of CO2 emission is pos- 20%. 10 seatec 2/2012