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Classification society The American Bureau of Shipping (ABS) has granted approval in principle (AIP) for the Seatransporter-DF - a dual-fuel design concept developed by Algoship Designers Ltd.

According to ABS, the design has the capability to accommodate multiple engine types as well as Type-C or membrane containment systems for liquefied natural gas (LNG) fuel.

"Technically innovative designs that advance the use of LNG as fuel will play an increasingly important role in the marine sector, and ABS is working alongside industry to enable this critical technological advancement," commented Dr. Kirsi Tikka, ABS Executive Vice President for Global Marine.

"As industry considers future fuel strategies, design concepts that promote the use of LNG as fuel will play an increasingly important role in that mix," Tikka added.

Algoship worked with US firm CleanShips LLC - a company that specializes in building and operating LNG-fuelled bulkers and tankers - to develop a version of the bulk carrier design that would meet specific operational requirements without compromising cargo carrying capacity. The 38,000-deadweight-tonne (dwt) version is equipped with a 2,400-cubic-metre (cbm) LNG fuel containment system that could allow for approximately 100 days' travel without refuelling, according to ABS.

Algoship is applying the same design philosophy to Panamax-, Ultramax- and Kamsarmax-sized carriers and has determined that the dual-fuel technology is also applicable to other vessel types.

"ABS contributed to this effort as a trusted advisor, engaging early in the process to apply its rigorous engineering and safety standards and verify the feasibility of the design," said Algoship Designers Ltd President Antony Prince.

"By working with ABS through its AIP process, we've been able to demonstrate that the Seatransporter was developed with a focus on safety and reliability and will be able to satisfy flag and port state requirements," Prince added.