Technology reduces ship’s wind resistance

Technology reduces ship’s wind resistance    NYK Line and Tsuneishi Shipbuilding Co. said they have jointly developed technology called the MT-COWL, which they said saves energy by reducing the wind resistance of the vessel's superstructure.
   Attaching an add-on structure to the facades of the bridge wings and support pillars for the vessel's superstructure creates corners with a slanted shape to reduce the effects of wind resistance.
   A prototype of the MT-COWL has been installed on a 180,000-deadweight-ton bulker, Cardinal Victory, and tested during the vessel's trial voyage. A wind tunnel test using a model showed that wind resistance was reduced by 10 percent so that the bulk carrier could see a reduction in carbon dioxide emissions of 520 tons a year.