The global AC drives manufacturer Vacon has delivered AC drives to MV Viking Legend, the world’s first river cruise vessel featuring a diesel-electric propulsion system.

The diesel-electric propulsion system of the vessel makes the maneuverability of the 135-meter-vessel easy on narrow rivers. It is estimated that the vessel achieves a 20% boost in fuel efficiency in comparison to any other river cruising vessel in the region. The ship also provides a quieter ride for guests by using four smaller propellers instead of two large propellers. Moreover, both engine rooms have been insulated to further reduce noise and vibration.

The MV Viking Legend is the first river cruise vessel in the world that is equipped with an integrated propulsion and network system, based solely on inverter-driven asynchronous generators and propulsion motors. The system uses Vacon’s variable-speed AC drives, and asynchronous generators and motors by AEM in Germany.

“The MV Viking Legend provides several new and remarkable technical performance features which will not only significantly reduce fuel consumption and CO2 and NOx emissions but will also improve the maneuverability of the vessel and minimize cost for maintenance. We are very excited that our technology is part of the world’s first diesel-electric river cruise vessel, which is also one of the largest river cruise vessels in Europe,” says Heikki Hiltunen, Executive Vice President, Vacon Group.

At its overall length of 135 m, a width of 11.4 m, the Viking Legend accommodates 189 passengers and 50 crew members. The vessel started its maiden voyage from Amsterdam, the Netherlands, on 5 July 2009.

The integrated diesel-electric network and propulsion system was developed and delivered by German-based e-powered marine solutions GmbH & Co. KG (e-ms).

“The innovative network and propulsion topology of e-ms is based on the cutting edge inverter technology from Vacon. It will now offer new and interesting opportunities for the marine and offshore industry. Thanks to the technically excellent, efficient and comprehensive support from Vacon’s engineers and my own team’s performance, it was possible to materialize this project within the given time frame,” says Mr Peter Andersen, Managing Director, e-ms.