Lausanne, Switzerland, October 30th 2025 – Daphne Technology and Maran Gas, part of the Angelicoussis Group, announce the conclusion of their joint pilot project that marked the first deployment of SlipPureTM Plasma-Catalytic Methane Slip Aftertreatment system on board the commercial LNG carrier, the Maran Gas Chios. The pilot reflects the commitment of both companies to explore innovative solutions for reducing methane emissions from shipping.
Image Credit: LNG-carrier Maran Gas Chios, by the Angelicoussis Group.
Methane slip, the unburned methane released from dual-fuel marine engines, remains a key challenge for LNG-fuelled vessels. Addressing this challenge is essential to unlock the full potential of LNG as a lower-emission marine fuel. Daphne Technology’s SlipPure™ system, designed to abate methane directly from exhaust gases, was retrofitted on board the vessel to test the feasibility of this approach under real operating conditions.
During the trial, Daphne Technology achieved reductions of up to 4 ± 2 g/kWh methane slip, demonstrating that plasma-catalytic-based abatement is possible on board an LNG carrier. These results represent a first step in validating the technology at sea and provide critical insights for the next phase of development.
By taking part in this pioneering initiative, the Angelicoussis Group has demonstrated its role as an early adopter willing to support the testing of first-generation technologies and decarbonise the maritime industry. Allowing the installation and operation of a first-of-a-kind (FOAK) technology on a vessel in commercial service required a clear commitment to advancing solutions that benefit the wider industry.
Ivan Raleff, Managing Director of Daphne Technology in Switzerland, said: “This was the first time SilpPure™ Plasma-Catalytic system has been deployed on a ship. It represented a bold step into uncharted territory, and the opportunity to conduct the trial has given us invaluable insights into how methane abatement systems behave in real-life maritime environments. These learnings are fundamental to the next phase of product development, and we are deeply grateful to the Angelicoussis Group for their openness, trust and support in enabling this milestone pilot.”
Andreas Spertos, Technical Director at Maran Gas Maritime Inc., commented: “Methane slip reduction is an inherent challenge for engines running on gas. When combined with the adversities of the marine environment, the challenge becomes exponentially more difficult. The successful demonstration onboard Maran Gas Chios is a landmark methane abatement technology trial. Together with Daphne, we successfully performed the test, verified the potentials, and identified improvements that will support the continuous development of this promising technology.”
The collaboration underlines the importance of partnership in tackling methane emissions. Both companies highlight the value of the insights generated, which will guide further innovation and help reduce risks for future deployments.
The pilot project also illustrates the broader role of early adopters in the energy transition. By taking on risk and providing operational platforms for emerging solutions, companies like the Angelicoussis Group accelerate the development of technologies that may become critical in reducing emissions from hard-to-abate sectors such as shipping.
The SlipPure™ Plasma – Catalytic system, in conjunction with Daphne Technology’s already commercialised PureMetrics™ emissions monitoring platform, continues to be developed with the aim of offering scalable methane abatement solutions for both land-based and marine applications.
Ends
Notes to editors
About Daphne Technology
Daphne Technology is dedicated to reducing methane emissions from gas-powered engines on land and at sea. Our innovative products reduce engine exhaust methane (aka ‘slip’) and provide real-time emissions data, enabling operators to meet stringent regulatory standards, enhance environmental responsibility, and improve operational efficiency. Backed by global industrial leaders, we are recognised for our contributions to a cleaner, more sustainable future. Learn more at daphnetech.com
About SlipPure
SlipPure™ is an innovative exhaust gas cleaning system specifically designed to remove methane from exhaust gases. It is a solution for natural gas-fired internal combustion engines in maritime, oil & gas and land-based industries. SlipPureTM is an environmentally responsible and technologically advanced solution for industries looking to reduce their carbon footprint and meet sustainability targets.
About Angelicoussis Group
The Angelicoussis Group is a privately owned group of affiliated shipping companies dating back to 1947. The Group operates a modern, diversified fleet serving the oil, gas and dry cargo markets through Athens-based companies, Maran Tankers Management (MTM), Maran Gas Maritime (MGM) and Maran Dry Management (MDM), and Maran Shuttle Tankers (MST), based in Stavanger, Norway. The Group has more than 75 years of family legacy providing best-in-class shipping services, operational excellence and industry-leading safety performance. Today, with 8,500-plus employees, 160 vessels on the water and 22 vessels on order, the Angelicoussis Group is one of the world’s largest privately owned shipping groups. Find out more at: https://angelicoussisgroup.com/
Press Contact for the Angelicoussis Group
Elisabeth Morris-Maragoula
emaragoula@angelicoussisgroup.com
