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BAKKER SLIEDRECHT ADDS ENERGY EFFICIENCY TO DREDGER

Wednesday, September 4, 2019 

Dutch electrical drive specialist is installing energy efficiency equipment on a converted trailing suction hopper dredger 'Schenge' from the Goes based Faasse Groep.

A shaft generator has been installed on the main engine, to generate electricity for the entire dredging installation. As a result, the ship works more efficiently, needs less maintenance and has an optimised lay-out.

Early this year, Faasse bought the freighter MS Mandeo in order to be converted into the trailing suction hopper dredger Schenge. After its completion in 2020, the vessel will be deployed for sand extraction in the North Sea. The Schenge has a hopper capacity of approximately 2600 m3, divided over two holds, so that it can carry two types of product. For the electric drive of the dredging installation and jet pumps, a shaft generator with matching frequency drive from Bakker Sliedrecht is added, which is connected to the existing main engine by means of a new PTO shaft. The vessel has an adjustable propeller (CPP). Because the main engine runs at a low load for propulsion during dredging, this power can be used for the electrical dredging installation.

As a result, the trailing suction hopper dredger does not require any auxiliary diesel generators. This saves a lot of fuel, space, piping, and maintenance. “We use the power that the main engine does not need during dredging. That makes the ship much more efficient and also ensures energy-efficient operations,” said Senior Electrical System Designer Marcel Bakker and Sales Engineer Wim Verlek of Bakker Sliedrecht. “Moreover, this solution saves a lot of space and allows a flexible and optimised lay-out of the vessel.”

During the conversion of the ship, Bakker is supervising installation and commissioning, and providing crew training.

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