Swedish ship-management company Marinvest has announced that two of its vessels operating on dual fuel ME-LGI (Liquid Gas Injection Methanol) have each passed 10,000 operating hours on methanol.
The Mari Jone and Mari Boyle tankers, which were delivered in 2016, are managed on timecharters for Waterfront Shipping and operate globally, providing a flow of methanol between storage terminals and customer plants. The two medium-range vessels are among the world’s first ocean-going vessels capable of running on methanol.
“The successful passing of this significant milestone is testament to the ME-LGI’s strong concept, and indeed the strength of our dual-fuel portfolio as a whole. With well over 250 sales within MAN Energy Solutions’ entire portfolio of low-speed, dual-fuel engines – all running on clean fuels such as methanol, LPG or LNG – this new achievement stands testament to our leadership within a critical market segment,” said Bjarne Foldager, senior vice president, head of Two-Stroke Business at MAN Energy Solutions.
When operating on methanol, the ME-LGI uses HFO, MDO, or MGO as a pilot fuel, to reduce emissions of CO2, NOx and SOx, and eliminate methanol slip. Tests on the engine, when running on methanol, have recorded the same or a slightly better efficiency compared to conventional HFO-burning engines.
“When introducing methanol as a two-stroke marine fuel, we encountered the usual teething problems, including addressing the liner lubrication because of methanol’s potentially corrosive behaviour. However, the service experience gathered after 50,000 hours of cumulative operation has ironed all such problems out and the ME-LGI engines are now running smoothly with no maintenance issues. In fact, they are even showing an improvement in fuel efficiency,” added René Sejer Laursen, sales & promotion manager, MAN Energy Solutions.