Rolls Royce Engines to Power Singapore's 1st LNG-Hybrid Tug Rolls-Royce will supply two gas engines to Sembcorp Marine Integrated Yard for the construction of Singapore’s first LNG-hybrid powered tug, the company said on January 18. The harbour tug will be operated in Singapore by Jurong Marine Services, a wholly-owned subsidiary 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, Rolls Royce said. The tug is expected to be completed later this year. “The mtu marine gas engines are part of Rolls-Royce's green and high-tech programme. Without exhaust gas after-treatment, they emit no sulphur oxides only very small quantities of nitrogen oxide, and particulate mass is below the verification limit,” said Chew Xiang Yu, head of Rolls-Royce Power Systems' commercial marine business in Asia.