Rolls-Royce has won a contract from ship owner Fjord Line to install liquefied natural gas (LNG)-based power and propulsion systems in two cruise ferries being built at the Bergen Group Fosen shipyard in Norway.

Each ferry will be installed with four gas engines, which will power a Promas rudder and propeller propulsion system, as well as help reduce nitrogen oxide (NOx) emissions by about 90%, and decrease sulphur oxide (SOx) and particulates emissions to negligible levels.

Under the deal, Rolls-Royce will deliver four Bergen BV12PG engines of 5.6MW each, two 296m³ LNG tanks with ACON-Gas control system, two Promas shaftlines including controllable pitch propeller (CPP), rudders and steering gear, as well as tunnel thrusters.

The company said that the emissions from its Bergen gas engines are already within the limits of the International Maritime Organisation’s Tier III environmental legislation, which is scheduled to come into force in 2016.

Rolls-Royce general sales manager of merchant & navy engines Odd Magne Horgen said that the vessels will be the first international LNG-fuelled passenger vessels in operation.

"Rolls-Royce technology will drastically reduce emissions delivering significant efficiency gains to the customer," Horgen said.

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By GlobalData

Rolls-Royce is scheduled to deliver the gas systems during 2012 and the passenger ferries are scheduled to be introduced into service between the west coast of Norway and Denmark in the summer of 2013.

Each of the 4,000dwt, 170m long vessels will have 306 cabins and will be capable of carrying up to 1,500 passengers and 600 cars.

The first ship, MS Stavangerfjord, will enter service in May 2013 and the second, MS Bergensfjord, will be ready for service a few months later.

Fjord Line CEO Ingvald Fardal said: "In this way, Fjord Line will meet the new, stricter standards for sulphur content in fuels long before the deadline in 2015."

Image: Fjord Line’s MS Stavangerfjord, the first international passenger vessel in the world to be powered by LNG, is scheduled to enter service in May 2013. Photo: Rolls-Royce