MAN Diesel & Turbo has received an order for four MAN B&W 5G70ME-GI engines that will be installed on BW Group’s two LNG vessels that are being built by Daewoo Shipbuilding & Marine Engineering (DSME).
In September this year, DSME signed a contract for the construction of two 173,000m³ to 180,000m³ LNG carriers with BW. For DSME, this project was the second LNG ME-GI contract received after an order signed in 2012.
MAN will supply the engine that complies with IMO tier II standards, with an option to add solutions for tier III compliance in future.
The vessels will be constructed at DSME’s Okpo shipyard in Geoje, Korea, and the delivery of the vessels are expected to be in late 2017 or early 2018.
ME-GI engines give the option of using fuel and gas and use high-pressure gas injection, which maintain the numerous positive attributes of MAN B&W low-speed engines, MAN stated.
The engines offer significant reductions in carbon dioxide, nitrogen oxide and sulphur emissions and represent a highly efficient, flexible propulsion-plant solution.
In addition to the ME-GI engine, the vessels will also use a partial re-liquefaction system (PRS) developed by DSME to lower maintenance costs by using the vaporised LNG gas in the cargo hold as a refrigerant, to eliminate the need of additional power sources and refrigerant compressors.
Image: MAN B&W 5G70ME-GI engine. Photo: courtesy of MAN Diesel & Turbo SE.