NIPPON Yusen Kabushiki Kaisha (NYK) and subsidiary Monohakobi Technology Institute (MTI) have made energy-saving adjustments resulting in 23 per cent reduction in carbon dioxide emissions over six months.
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 pair have been conducting research since the summer of 2013, studying measures such as remodelling the ship's bulbous bow and installing MT-FAST, a fuel saving device fitted to the submerged part of a ship's hull to maximise its propulsive efficiency.
By modifying the bulbous bow, it changes the way water flows around the hull, reducing drag and thus increasing speed, range and fuel efficiency.
Analyses using actual voyage data gathered over half a year after the implementation of improvements in June 2014 were conducted by the shipping company, and a 23 per cent 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.
This adoption of energy-efficient technology is being supported by a grant provided through the Maritime Port Authority of Singapore's Green Technology Programme and also supported by the ClassNK Joint R&D for Industry Programme.
"The NYK Group will also aim for further energy savings by containerships by proceeding with construction based on this new approach now that effective methods (patent pending) for these operating conditions have been established," the company said in a statement.
WORLD SHIPPING
10 March 2015 - 20:37
NYK, MTI devise energy-saving adjustments for containerships
NIPPON Yusen Kabushiki Kaisha (NYK) and subsidiary Monohakobi Technology Institute (MTI) have made energy-saving adjustments resulting in 23 per cent reduction in carbon dioxide emissions over six months.
WORLD SHIPPING
10 March 2015 - 20:37
NYK, MTI devise energy-saving adjustments for containerships
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