Nippon Yusen Kaisha (NYK) and Tsuneishi Shipbuilding have jointly developed a energy-saving technology in order to reduce the wind resistance of a vessel's superstructure.
The new technology, called MT-COWL, has been tested in a wind tunnel using a model, and showed a 10% reduction in wind resistance.
By applying this technology in a 180,000dwt bulk carrier, CO2 emissions can be reduced by 520t a year, the companies claim.
The MT-COWL technology lowers wind resistance by attaching an add-on structure to the facades of the bridge wings and to the vessel's superstructure support pillars, creating corners with a slanted shape that reduce the effects of wind resistance.
The facades of bridge wings and support pillars account for 30% of the total superstructure.