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ABS has granted Hanwha Ocean an Approval in Principle (AiP) for a multipurpose fuel tank and a fuel gas supply system that allows a methane carrier to transition from LNG to ammonia.
The approval covers the fuel tank and the integrated fuel gas supply system for an electrically propelled methane carrier powered by a gas turbine. The system is designed to supply either LNG or ammonia to the gas turbine, allowing for the transition between both fuels. ABS reviewed the design in accordance with relevant international and classification requirements.
"Flexibility in fuel supply is a practical requirement for shipowners operating in an evolving regulatory environment, and the engineering challenge of achieving it without replacing tanks is considerable. This design directly addresses that challenge, and ABS is pleased to support Hanwha Ocean in verifying the concept's feasibility against applicable requirements," said Gareth Burton, ABS Senior Vice President, Global Engineering.
"While uncertainties persist regarding the implementation of environmental regulations, the maritime industry's path to net-zero emissions remains clear. Hanwha Ocean's multipurpose fuel design offers shipowners a practical and flexible pathway from LNG to ammonia, while ensuring long-term competitiveness. Hanwha Ocean will continue to develop future-ready technologies that support sustainable shipping," stated Young Chang Shon, Hanwha Ocean CTO.
This approval is the latest development in a series of related projects between ABS and Hanwha Ocean, which include an AiP for an ammonia gas turbine propulsion system in 2023 and a gas dispersion study of a 174,000 m³ methane carrier with an ammonia gas turbine in 2024.