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New Becker 'cross over' rudder to cut fuel costs

Becker Marine Systems has developed a new “Cross Over” rudder shape designed to reduce losses of propulsion energy from the propeller, and increase fuel efficiency.

Designed for fast ships with high propeller loads, such as boxships and ferries, the rudder is fitted with a bulb which streamlines the space between the rudder’s hubcap and the rudder, allowing for a better fluid dynamics throughout the stern components. The rudder can also work in conjunction with other Becker components such as the Twisted Fin or Mewis Duct.

“Our customers have realized that a great deal of energy can already be saved in front of the propeller through the use of the Becker Mewis Duct and Becker Twisted Fin,” said Becker managing director, Dirk Lehmann. “This is now possible on the rudder, too. If the three systems of the stern, propeller and rudder unit are perfectly matched with one another, energy consumption can be lowered in a double-digit percentage range.”

“The cost savings are so huge that the return on investment is usually achieved within one year,” says Walther Bauer, Becker director Sales and Projects. “A retrofitting is often worthwhile as well. If ships have completely changed their operations profile for example, it may also be necessary to rebuild the propellers.”

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