ClassNK-NAPA green software unlocks significant fuel savings during “K” line full-scale trials
NAPA, the leading global maritime software house, and ClassNK, one of the world’s leading classification societies, announced that their comprehensive eco efficiency and operational optimization solution ClassNK-NAPA GREEN, has generated fuel savings of 3.9% on a “K” Line (Kawasaki Kisen Kaisha Ltd) container vessel, ClassNK said in its press release.
The software solution was tested in full scale sea trials in January 2014 aboard an 8,000+ TEU container ship operating on a standard Mediterranean/Europe route. The full ClassNK-NAPA GREEN suite of systems were utilized on the voyage, including speed, trim, and voyage optimization based on the ClassNK-NAPA GREEN Dynamic Performance Model, and analyzed against the captain’s voyage plan. Despite encountering heavy weather on multiple occasions over the course of the voyage, speed profile and voyage optimization reduced the fuel consumption by 2.7%, while a further 1.2% savings was attributed to optimum trim, taking the total reduction in fuel consumption from the trial to 3.8%.
While trim optimization was restricted on this voyage due to loading conditions, results from a full-scale trim optimization study, conducted during two Indian Ocean crossings aboard the vessel, indicated that trim optimization has the possibility to further save fuel up to 4%.
In addition it was found that the accuracy of Dynamic Performance Model – the self-learning component of ClassNK-NAPA GREEN – was extremely high. In terms of fuel consumption prediction the accuracy was as high as 99.6%, which is unprecedented in the industry.
About NAPA
NAPA is the world leading software house supplying solutions for ship design and operation with a mission to improve safety and eco-efficiency of the global maritime industry. With a solid track record in setting new standards for 3D modeling of ships and ship performance analyses, NAPA’s philosophy is that true eco-efficiency starts with the build process and continues through the operational lifecycle of a vessel.
NAPA software are used by shipyards, owners, operators, charterers, designers, classification societies, research institutes, authorities, consultancies and universities. NAPA has 400 user organizations for the design application and nearly 2,000 installations onboard.
About ClassNK
ClassNK is one of the world’s leading classification societies, dedicated to supporting the growth and development of the maritime industry, and ensuring the safety of ships, their crews, and the marine environment. With more than 8,500 vessels on its register, ClassNK provides classification and certification services to more than 20% of the world’s merchant fleet.
