World\u2019s first S90 methanol engine retrofit confirmed
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Everllence has announced the completion of the world\u2019s first conversion of an Everllence B&W S90 two-stroke engine to dual-fuel methanol running. The announcement followed the successful sea-trials of Cosco Shipping Lines\u2019<\/a> 20,000+ TEU container vessel, Cosco Shipping Libra. <\/em>The vessel\u2019s 11S90ME-C engine was retrofitted to an S90 methanol engine, specifically an 11S90ME-LGIM (-Liquid Gas Injection Methanol) unit.<\/p>\n Everllence PrimeServ, Everllence\u2019s after-sales division partnered with Cosco Shipping Heavy Industry from concept to execution in delivering the world first S90 methanol engine retrofit. <\/p>\n The full-scope project covering engineering, project management, installation, commissioning and sea-trials. As part of the process, Everllence invested in a dedicated 4S90 testbed engine in Japan that was commissioned in early 2025. The testbed validated the S90 engine\u2019s methanol performance under real operating conditions, accelerating its readiness for this \u201cfirst-ever\u201d large-bore milestone.<\/p>\n \u201cWe\u2019re proud to support Cosco Shipping Lines and Cosco Shipping Heavy Industry \u2014 and the maritime industry as a whole \u2014 in taking this significant step toward decarbonizing shipping,\u201d said Michael Petersen, senior vice president and head of Everllence PrimeServ, Denmark. \u201cThis milestone highlights Cosco Shipping Lines\u2019 role as a first mover and presents a practical path for reducing emissions from Everllence S90 engine vessels. It also showcases Everllence\u2019s capability to deliver large-scale retrofit projects. With 26 dual-fuel conversions already completed and an even larger pipeline across various alternative fuels, shipowners can trust Everllence to deliver retrofit solutions at scale.\u201d<\/p>\n Looking beyond the Cosco Shipping Libra retrofit that proves the viability of methanol as a marine fuel, Everllence<\/a> believes that the potential for further large-bore retrofits is substantial with over 300 vessels worldwide currently equipped with S90 class engines and therefore potential candidates for similar retrofits.<\/p>\n \u201cWhile the journey toward full decarbonization will require collaboration across the industry, this achievement demonstrates that large-scale conversions are both technically proven and commercially viable,\u201d said Petersen. \u201cThis opens a practical pathway towards accelerating the maritime energy transition together with our customers.\u201d<\/p>\n The post World\u2019s first S90 methanol engine retrofit confirmed<\/a> appeared first on Marine Log<\/a>.<\/p>\n<\/div>\nUnlocking opportunity<\/h4>\n