KR grants AiP to HD Hyundai for LNG BOG treatment system
The Korean Register (KR) has granted an Approval in Principle (AiP) to HD Hyundai Heavy Industries and Donghwa Pneutec for their jointly developed LNG Boil-off Gas (BOG) Treatment System.
The announcement was made on 10 September at Gastech 2025, in collaboration with the Liberian Registry.
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The system, designed for use both onboard vessels and at berth, can process up to 0.5 tonnes of BOG per hour, converting it into city gas which can then be utilised for onshore energy purposes.
KR chairman and CEO LEE Hyungchul said: “This AiP marks a meaningful achievement in reducing greenhouse gas emissions from LNG-fuelled vessels, both during construction and while at berth.
“KR will continue to work closely with industry partners to ensure the smooth commercialisation of new technologies and to drive a more sustainable maritime industry.”
The AiP is based on a concept by HD Korea Shipbuilding & Offshore Engineering and will enable shipyards to reduce greenhouse gas emissions and fuel losses during vessel construction.
It also provides a solution for shipowners to effectively handle excess gas during prolonged dockings or when there is a need for Alternative Maritime Power (AMP), thereby adhering to the ever-tightening environmental rules.
The system was successfully tested on an 8,000TEU LNG dual-fuelled containership in June, demonstrating its effectiveness.
Donghwa Pneutec vice chairman and CEO KWON Yungwoo said: “This demonstration has once again validated the technological excellence of our LNG boil-off gas compressor.
“With AMP requirements expected to become mandatory, we anticipate this technology will see broader adoption across the industry.”
The system’s application across the full lifecycle of LNG dual-fuelled vessels in the maritime industry is expected to significantly contribute to the industry’s decarbonisation efforts.
An official from HD Hyundai was quoted as saying: “This AiP marks the world’s first validation of LNG boil-off gas treatment technology, underscoring our commitment to advancing greener shipbuilding for LNG-fuelled vessels and driving decarbonisation across the maritime industry.”
In a related development, KR and HD Hyundai Samho signed a Memorandum of Understanding (MoU) to develop a safety system for ammonia-fuelled vessels.
