Klaveness Combination Carriers (KCC) and Wärtsilä have signed another contract to fit EnergoProFin tailor-made fins to cancel vortex from occurring from the boss cap, reducing drag from the vessel
Wärtsilä EnergoProFins will be fitted to CABU vessels Bakkedal, Bangor and Bantry.
The device replaces the propeller boss of each vessel and is equipped with tailor-made fins to cancel any vortex from occurring from the boss cap, reducing drag from the vessel.
Aboard KCC’s vessels, the device is expected to give a fuel saving of 2% to 3% and is compatible with the Becker Mewis Duct also planned for installation on these vessels.
Both devices are scheduled to be installed during planned drydockings in 2022.
KCC has previously installed the Wärtsilä EnergoProFin on sister vessels Barcarena and Banastar, and feedback from these installations has been positive. With this order, all five CABU I vessels built 2001-2007 will be equipped with the technology.
The Wärtsilä EnergoProFin consists of a propeller boss fitted with short blades inclined to convert hub vortex energy into additional torque and thrust transmitted back to the shaft.
The elimination of propeller hub vortex results in fuel savings, reduced stern vibrations and lower propeller noise. It also solves rudder erosion problems.
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