Page 44: of Maritime Reporter Magazine (January 2014)

44 Maritime Reporter & Engineering News • JANUARY 2014 are in operation to provide the required on-board power. This is done by three

MAN sets consisting of: 2 x MAN 6L21/31 (1,300 kW at 900 rpm) and 1 x

MAN 7L21/31 (1,500 kW at 900 rpm).

They are running with sulfur free diesel fuel. To complement the use of clean fuel, a full-scale Aalborg waste and heat recovery system (WHR) has been in- stalled on board, resulting in a reduction in gas use by about fi ve percent. The sys- tem converts waste heat from the exhaust gases to steam-generated electricity.

The system consist of four economizers drawing on the exhaust stream from all four main engines, and supplying steam to a Shinko steam turbo generator. This covers the electricity needs for all cabins and public areas used by the ship’s pas- sengers and crew.

Bunker Procedure

The ferry company has contracted the

Norwegian company Skangass AS for bunkering. For the time being gas is provided by trucks, with 30% accom- plished at Risavika (Stavanger) and 70% at Hirtshals. Complications followed, as existing Norwegian regulations up to now do not allow bunkering of LNG with passengers on-board, hence the ship has been taking on LNG in Denmark by

FUEL TECHNOLOGY FOCUS

The Rolls Royce B35:40V12PGas engines deliver 5,400 kW at 750 rpm.

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