Rolls-Royce gas engines have powered Fjord Line ferries Bergensfjord and Stavangerford to the top two positions in the World Ports Climate Environmental Ship Index (ESI).
The liquefied natural gas (LNG) fuelled ferries are both powered by four Rolls-Royce BV12PG gas engines that drive highly efficient Rolls-Royce PROMAS integrated rudder and propellers. These ferries have achieved the top score in the index, which measured the emissions of over three thousand ships.
Of the 3194 ships currently on the ESI list, Bergensfjord scored 93.9 points followed by sister vessel Stavangerfjord with 93.5. Only fifty vessels had a score higher than 49.
It is clear that the Rolls-Royce engines have made these ferries more environmentally-friendly than other vessels on the ESI list. We continue to improve the efficiency of our vessels and, as an example, have recently moved to LED lighting to reduce further energy consumption onboard,” said Morten Larsen, Fjord Line’s Technical & Nautical Director.
John Knudsen, President Commercial Marine, Rolls-Royce said:
These remarkable ferries are driven exclusively by natural gas. One reason for the high ESI score is that the Rolls-RoyceBergen engines only use LNG and do not need oil fuel for pilot injection. The result is that the BV12PGs emit zero oxides of sulphur, reduce oxides of nitrogen by 98% and cut carbon dioxide emissions by 23%.”
The Environmental Ship Index is a project within the World Ports Climate Initiative and is used by ports to reward shipowners for their commitment to greenhouse gas emissions reduction.
Shipowners enter their vessels voluntarily on the basis that ports offer favourable terms to those vessels that score highly. Cleaner ships will in turn help ports not only to reduce general greenhouse gas emissions but also to cut NOx which is a local air pollutant.
Delivered in 2013, the 25,000gt first of class Stavangerfjord won the Nor-Shipping Energy Efficiency award in June last year.
Source: Rolls-Royce / Image Credit: Fjordline.dk
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