Oshima unveils LNG-fuelled Kamsarmax bulker

An innovative superstructure allows scaleable LNG storage without coprimising cargo capacity An innovative superstructure allows scaleable LNG storage without coprimising cargo capacity

DNV GL has granted approval in principle (AiP) for a LNG-fuelled Kamsarmax bulk carrier concept from Oshima Shipbuilding Company.

The design features a U-shaped superstructure that can accommodate the LNG tank in its centre, allowing the accommodation deck house to be completely separated from the LNG storage tank and providing scalability of LNG storage. A tank cover adds an additional safety barrier and ensures compliance with the draft IGF Code for low-flashpoint fuels.

The vessel is designed for dual-fuel operation, using both LNG and HFO to power the main engine, the generators and the boiler. The LNG handling system for receiving AiP was supported by Mitsubishi Heavy Industries, while bunkering stations for LNG, heavy fuel oil (HFO) and marine diesel oil are located at the side of the accommodation deck house.

Oshima’s latest Panamax/Kamsarmax hull design provided the basis for the vessel’s shape. The new LNG-fuelled design complies with DNV GL class rules and all current and upcoming regulations, including new emission control regulations and the draft IGF Code.

Tatsurou Iwashita, director and general manager of the design department at Oshima, said: “One of the main factors for shipowners and operators considering the use of LNG as ship fuel is the space required to store LNG on board. But as a result of our changes to the superstructure, our design does not reduce the vessel’s cargo capacity.

“Combined with its dual-fuel capabilities, this should make the design very attractive for charterers, especially for trade routes where the LNG fuel price is competitive to HFO and substantially cheaper than marine gas oil (MGO).”
The vessel’s parameters are also based on a DNV GL feasibility study from 2014 that examined the use of LNG in a trade route between Europe and North America.

Morten Løvstad, Bulk Carrier Business Director, DNV GL said: “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 500–700m3 of LNG and one bunkering operation for a round trip between Europe and North America.” If it were powered with LNG for the entire voyage, it would require 2,000–2,500m3 of LNG.

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