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Wärtsilä, Oshima & DNV GL Produce Bulker Design

The new Ultramax Bulk Carrier design meets the IMO 2030 environmental targets. (Photo: Wärtsilä)

Posted by Michelle Howard

The technology group Wärtsilä, Japanese ship builder Oshima Shipbuilding, and the classification society DNV GL have delivered the first results of their joint industry development project.

At the recent Nor-Shipping exhibition held in Norway, the project partners announced a next-generation 62,000 dwt Ultramax Bulk Carrier design that is optimized according to actual operating profiles, and that will meet coming emissions legislation. The design demonstrates that emission levels from conventional merchant vessels can be significantly reduced in line with International Maritime Organization (IMO) targets.

The project goals included the achievement of low emission levels, both at sea and in port, the fulfilment of the IMO's requirements to reduce CO2 emissions per ship´s capacity-mile by at least 40% by 2030, and zero emissions during waiting time. A further aim of the project has been to create a new standard that maximizes the return on investment (ROI) for the owner. A key objective was to minimize greenhouse gas (GHG) emissions through the application of currently available technologies.

The high efficiency of the propulsion solution reduces the EEDI by 50 percent compared to standard vessels of this size and type. The EEDI provides a specific figure for an individual ship design, expressed in grams of carbon dioxide (CO2) per ship's capacity-mile

Other benefits include the ability to operate in an environmental mode while in port through the main use of solar panels, the installation of an LNG tank that is dimensioned based on the capacity needed for the operating profiles and the availability of LNG bunkering infrastructure, an optimized hull shape, and the option to also install a hard sail to generate extra propulsion. The hard sail system is being developed jointly by Oshima Shipbuilding and Mitsui O.S.K. Lines.

Jul 2, 2019

 

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