Rolls-Royce engines picked for world’s first LNG-hybrid tug January 19, 2021, by Adnan Bajic Rolls-Royce has been contracted to supply two mtu 16V 4000 M55RN gas engines for the world’s first LNG-hybrid powered tugboat. Courtesy of Rolls-Royce The engines will be supplied to Sembcorp Marine Integrated yard, Rolls Royce said in its statement. The harbor tug will be operated in Singapore by Jurong Marine Services, a unit of Sembcorp Marine. The new LNG-hybrid tug is the first of 12 tugs that Sembcorp Marine plans to design and build to replace the existing diesel-powered ones between now and 2025. “The mtu marine gas engines are part of Rolls-Royce’s Green and High-Tech program. Without exhaust gas after treatment, they emit no sulfur oxides only very small quantities of nitrogen oxide, and particulate mass is below the verification limit”, says