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NYK, MTI unveil energy-saving adjustments to container vessel.

Japanese carrier Nippon Yusen Kabushiki Kaisha (NYK) and the Monohakobi Technology Institute (MTI) have made energy-saving adjustments to a containership resulting in a verified 23 percent reduction in carbon dioxide (CO2) emissions over half a year, greater than the amount estimated prior to the tests.

NYK said to reduce energy consumption, containerships often sail at a speed that is much slower than the average speed anticipated when the ship was designed and built.

To make existing ships more energy efficient at these slower speeds, the NYK Group has been conducting research since the summer of 2013, studying measures such as remodelling the ship's bulbous bow and installing MT-FAST.

Bulbous bow is a protruding bulb at the front of a ship just below the waterline. The bulb modifies the way the water flows around the hull, reducing drag and thus increasing speed, range, and fuel efficiency.

MT-FAST is a fuel-saving device fitted to the submerged part of a vessel's hull to maximize the vessel's propulsive efficiency, thus resulting in fuel savings.

NYK said that Big Data analyses using actual voyage data gathered over half a year after the implementation of improvements in June, 2014 were conducted by the NYK Group, and a 23% reduction in CO2 emissions was subsequently certified by the ship classification society ClassNK. The conversion was also verified not to affect the safe operation of the vessel or the operating condition of the engine.

The adoption of energy-efficient technology is being supported by a grant provided through the Maritime Port Authority of Singapore's Green Technology Program and also supported by the ClassNK joint research and development for industry program.


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Title Annotation:Shipping
Publication:Manila Bulletin
Date:Mar 20, 2015
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