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Horizons January 2015

Stena Germanica’s conversion to methanol power is a world first LR is overseeing the approval and classification of the Stena-owned ro-pax ferry after carrying out risk assessment and Type Approval on a dual-fuel Wärtsilä engine in Italy

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Another milestone in the quest for alternative, more fuelefficient sources of power will be marked by the conversion of the ro-pax vessel Stena Germanica to a dual-fuel methanol propulsion system at Poland’s Remontowa shipyard at the end of January. The 240-metre-long, 1,500-passenger ro-pax ferry, which will be converted over a period of 45 days from 28 January, will be the world’s first-ever methanol-powered sea vessel. The new fuel arrangement on the Germanica, which is owned and operated by the Swedish ferry operator

Stena Line, will combine methanol as its primary fuel with marine gas fuel (MGO) as a back-up power source. SOx emissions are expected to be cut by 99%, NOx by 60%, particulates by 95% and CO² by 25%. When work starts on the refit, just one of the Germanica’s four main Wärtsilä engines will be converted. At the same time the piping and ancillary equipment for all four engines will be installed in Poland and, once the owner is satisfied with the running of the first engine, the others will be converted one by one while the vessel is in service. The plan is for the vessel to be running on all four engines later this year.

Lloyd’s Register has supported the Stena Germanica project by applying our Assessment of Risk Based Designs (ARBD) process for unconventional fuel. Part of our consultancy service has been a pre-study to identify any major statutory and classification stumbling-blocks. LR has also facilitated two HAZIDs and HAZOPs to ensure that the design is just as safe as one using conventional diesel fuel oil. A unique feature of this revolutionary vessel is that it will be fitted with new dual-fuel injection nozzles which are able to inject both methanol and diesel fuel. LR’s Senior Project Manager for the conversion, Christian Kammerer, said: “Each engine is supplied by its own high-pressure methanol pump with a working pressure of 600 bar.”

Stena RoRo, Wärtsilä and Lloyd’s Register representatives at the testing in Trieste

www.lr.org/horizons

Horizons January 2015  

The January 2015 issue of LR's Horizons magazine is packed with the latest news from the marine industry including two world firsts. There’s...

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