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LNG dual-fuel conversion for container ship


German shipping company Wessel Reederei and MAN Diesel & Turbo are working together to retrofit the 8L48/60B main engine on the 1,000 TEU container ship into a dual-fuel hybrid. This is the first time for a container ship to be converted to use LNG and diesel propulsion. When running on LNG, the Wes Amelie will reduce emissions of sulphur oxide by >99%, nitrogen oxide by ~90%, and carbon dioxide by up to 20%. It is hoped the project will


stimulate demand for LNG as a fuel. Wessels Reederei manager Christian Hoepfner


LNG


said: “With each rebuild, we create demand for LNG as a fuel. Only in this way – and not only through appeals – can the development of an LNG infrastructure gain momentum.” Due to the long delivery time of


LNG tanks, the engine retrofit will commence in autumn next year. The vessel is then scheduled to enter operation burning LNG shortly thereafter in December.


The Wes Amelie is a feeder-


vessel launched in 2011 and operates in the North and Baltic Seas. When selecting a suitable vessel for conversion, special attention was paid to the scalability of the engineering. In this regard, the fact that the


Wes Amelie has 23 sister ships, 16 of them structurally identical, would allow follow-up projects to be easily implemented.


Invasive species benefit from ocean acid


Ocean acidification could be helping migratory algae, jellyfish, crabs and shellfish become established in new marine ecosystems. Some of these species likely reached their new home via ship ballast water exchange. Irrespective of how they found their way, the slimy, jelly-like creatures are


far more tolerant of rising CO2 levels than those with hard structures like corals, since shells and skeletons dissolve away as CO2


levels rise. The study, conducted by


marine scientists at Plymouth University, found that notorious nuisance species – including Japanese kelp (Undaria pinnati- fida) and stinging jellyfish (Pelagia noctiluca) – are resilient to rising CO2


and even thrive in acidic


conditions. It notes that in the tropics, coral reefs however face a host of interconnected problems (such as bleaching, corrosion, disease, spreading seaweed, invasive species) that are all aggravated by rising CO2


. “We are witnessing the spread


of marine life that cause problems, such as toxic jellyfish blooms and rotting algal mats,” said professor Jason Hall-Spencer, lead author of the report. “We predict the problems associated with harmful marine life will get worse in response to rising CO2


. Pathogens


like cholera do not recognise national borders, so seawater warming is a health issue for cities like London. Questions also remain on which organisms will spread and cause problems as Arctic shipping routes open up.” The study arose from observa-


tions carried out at volcanic sites in the Mediterranean. The extensive review also


revealed stand-out cases such as so called ‘Killer algae’ (Caulerpa taxifolia), which is spreading worldwide. It benefits from higher CO2


and is so toxic that native


herbivores die of starvation rather than eat it. “There will be winners as well


as losers as CO2 levels ramp up,”


said researcher Ro Allen. “The spread of harmful marine organisms should be factored into risks of rising CO2


emissions.” 05


MAN Diesel & Turbo also announced a second first: Doosan Engine fired up the most powerful engine from the MAN Diesel & Turbo portfolio ever designed and built. The MAN B&W 11-cylinder G95ME-C9.5 two-stroke – rated at 103,000 horsepower – was switched on in October at Doosan’s works in Korea. The G95ME-C9 engine, with a


bore of 950mm and a stroke of 3,460mm, provides 6,870kW per cylinder at 80 rpm and 21 bar MEP and supplements the S90ME-C9/10 types by allowing the engine to be further de-rated thanks to the larger cylinder bore and/or fewer cylinders to be installed.


Azipod factory Power and automation group ABB has opened a new technology laboratory in Helsinki, Finland, adjacent to its Azipod factory. The new facility will accommo-


ABB opens R&D lab next to


date 30 ABB engineers who will work on research projects as well as demonstrate products to customers. The company says that the apposite location will make it easier to develop and test new systems at the same site. The laboratory will be put to


use in developing automation, remote control, propulsion, integrated operations and waste heat recovery systems. An overarching theme of


research activities will be to ‘join up the shore operation to what happens on board ship’.


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