Home ShipmanagementClassification Societies ClassNK Issues World’s First EEDI Certification for Air Lubrication System Fitted Vessel

ClassNK Issues World’s First EEDI Certification for Air Lubrication System Fitted Vessel

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Noboru Ueda

Noboru Ueda

Tokyo – Leading classification society (Chairman and President: Noboru Ueda) has completed the EEDI appraisal of Harvest Frost, the world’s first post-panamax bulk carrier fitted with the Mitsubishi Air Lubrication System (MALS). The HarvestFrost was constructed by Oshima Shipbuilding Co., Ltd. for ADM Harvest Shipping in accordance to ClassNK rules and guidance.

Developed by Mitsubishi Heavy Industries with support of ClassNK’s Joint R&D for  Industry Program, MALS uses specialized blowers to create a layer of bubbles that flow along the bottom of a hull to improve fuel efficiency by reducing frictional
resistance.

While EEDI is calculated and evaluated primarily based on hull form, ship speed,
and engine efficiency, the IMO has also established guidelines for including the
effect of innovative new technologies, such as MALS, in the verification and
calculation of a vessel’s EEDI. The appraisal and certification of the EEDI of the MALS-equipped Harvest Frost is understood to be the first time that the effect such an innovative technology has been evaluated part of a vessel’s EEDI.

ClassNK has supported the development of EEDI regulations throughout the deliberation and enforcement stages at the IMO. ClassNK carried out the very first EEDI evaluations as part of the deliberation process at the IMO, and today has carried out EEDI certifications for over 150 vessels.

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