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First ship with IMO Tier III Wärtsilä engines launched

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The L’Astrolabe, a 236-foot (72m) polar logistics vessel launched July 12, is the first vessel operating with the International Maritime Organization’s Tier III EIAPP (Engine International Air Pollution Prevention)-certified Wärtsilä diesel engines. It is fitted with a complete Wärtsilä propulsion machinery package and Wärtsilä NOR (NOx Reducer) SCR (Selective Catalytic Reduction) exhaust gas cleaning systems for all the main engines, according to a Wärtsilä news release.

The ship was built by PIRIOU in France for the French Southern and Antarctic Lands Administration. It will be used to transport personnel and supplies to the Dumont d’Urville research station in Antarctica.

The four IMO Tier III certified 8-cylinder Wärtsilä 20 diesel engines are combined with Wärtsilä NOR systems to be fully compliant with the IMO Tier III exhaust emission regulations set out in Annex VI of the MARPOL 73/78 convention.  

The full Wärtsilä scope of supply for this vessel comprises four Wärtsilä 20 main engines, two Wärtsilä controllable pitch propellers and shaft lines including Wärtsilä reduction gears, Wärtsilä NOR systems, and a Wärtsilä tunnel thruster. The system enables vessels to be compliant with global NOx emission control area regulations.

“Such packages are convenient for shipyards and ship operators, and triggered by IMO regulations are expected to be specified by an increasing number of shipyards and ship owners,” stated Juha Kytölä, vice president, Environmental Solutions, Wärtsilä Marine Solutions.

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