DNV GL-AiP

Oshima Shipbuilding has received an approval in principle (AiP) certificate from classification society DNV GL for its LNG-fuelled Kamsarmax bulk carrier design.

Designed for dual-fuel operation, the Kamsarmax vessel can use both LNG and HFO to power the main engine, the generators and the boiler.

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DNV GL bulk carrier business director Morten Løvstad said: "LNG is emerging in a number of ship sectors and has great potential.

"It offers customers a flexible, safe, future-proof solution and the opportunity to almost eliminate SOx (sulphur) emissions and particulate matter, cut NOx (nitrogen) by 80% with EGR (exhaust gas recirculating) and reduce CO2 (carbon dioxide)."

"It offers customers a flexible, safe, future-proof solution and the opportunity to almost eliminate SOx emissions and particulate matter."

The new design features a U-shaped superstructure to accommodate the LNG tank in the centre, thereby allowing the deckhouse to be completely separated from the LNG storage tank. A tank cover offers an additional safety in compliance with the draft IGF Code.

Oshima Shipbuilding partnered with Mitsubishi Heavy Industries to develop the LNG-handling system of the vessel design.

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Data generated from a DNV GL feasibility study from 2014 that analysed the use of LNG in a trade route between Europe and North America has also contributed to the new design.

"Taking all relevant factors into account, we found that a LNG-fuelled Kamsarmax bulk carrier, which only uses LNG in emission control areas, would require 500m³ – 700m³ of LNG and one bunkering operation for a round trip between Europe and North America," Løvstad added.

DNV GL recently awarded an AiP certificate to Hyundai Heavy Industries (HHI) for its SkyBench concept for mega box ship design.

Image: DNV GL Group president and CEO Dr Henrik Madsen and Oshima Shipbuilding CEO Sho Minami with the AiP certificate. Photo: courtesy of DNV GL AS.