Marine Technology Reporter Blogs - opex

Rolls Royce and DNV engaged in a joint study of different fuel and engine configurations. The vessel selected for this study was the Rolls Royce designed UT 776 PSV. In the study, four alternative power system arrangements were considered, with two gas tank versions. The gen-sets were powered by various sizes of Bergen C-series diesel and gas engines and the dual fuel engine was a commercially available unit. For diesel and hybrids the assumption was that the exausts would have a SCR system giving a constant value of NOx reduction of 75%. In terms of cost, the diesel was the winner in the study as there is the added expense for other solutions of insulated LNG tanks.