Marine Log

Viking RoPax

April 11, 2006

Viking chooses Wartsila power for RoPax

Finland's Viking Line Abp has chosen Wartsila main and auxiliary engines for a new high-speed RoPax ferry that will operate between Helsinki, Finland, and Tallinn, Estonia.

The vessel is being built at the Helsinki shipyard of Aker Yards. for delivery in January 2008.

Under a contract signed last month, Wartsila will deliver four eight-cylinder Wrtsil 46F main engines, each of 10,000 kW output at 600 rpm, and three 8-cylinder in-line Wartsila Auxpac 20 generating sets, each of 1,350 kWe output.

The 2,500-passenger ferry will have dimensions of 185 m length overall, 170 m length between perpendiculars, 27.70 m breadth and 6.55 m design draft.

It will be built to Ice Class 1A Super for year-round navigation in the Baltic, and will have a service speed of 25 knots.

The ferry is intended to provide fast comfortable trips with a range of dining and shopping facilities for passengers, and to meet the increased need for transportation capacity, especially for passenger vehicles.

The Wartsila 46F engine features a high power concentration, enabling 40,000 kW to be delivered by four engines with a minimum number of cylinders while giving substantial benefits in minimum engine height and breadth. The low weight of these engines will enable the ferries to have an increased payload capacity compared with alternative engines.

The engines will be equipped with catalysts to minimize NOx emissions in the exhaust gases.

The main criterion for selection of the Wartsila 46F as the main engines, however, is that the engines' fuel consumption can be optimized to match the vessel's complex operating profile with frequent variations in engine power during the crossings between the ports of Helsinki and Tallinn.

The fuel consumption of the engines will be optimized for both constant -speed operation while entering and leaving ports, and their variable-speed operation during the passages across the Gulf of Finland.

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