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The technology group Wartsila is to supply the engines for Atair, a new LNG fuelled research vessel being built for the German government.
Wartsila will also supply exhaust cleaning systems based on selective catalytic reduction (SCR) technology and the LNGPac system for complete fuel gas handling. The SCR technology will be needed when the engines are running on conventional marine diesel fuel if the vessel exhausts its supply of LNG on long voyages. The vessel is under construction at the Fassmer shipyard in Germany and will be owned by Bundesamt fur Seeschifffahrt und Hydrographie (BSH), the Federal Maritime and Hydrographic Agency.
The new 75 metres long ship, the Atair will replace her 30 year old namesake, and will be the first German research vessel operating on LNG fuel. Wärtsilä will also supply the engines and SCR systems for three German Federal police boats to be built at the Fassmer yard. The full scope of Wartsila’s supply for the Atair is two 6-cylinder Wartsila 20DF dual-fuel engines capable of running on either LNG or conventional liquid fuels, one 6-cylinder Wärtsilä 20 engine, two exhaust cleaning systems, and a Wartsila LNGPac fuel storage, supply, and control system.
The engines will have Tier III classification since the dual-fuel engines comply with this classification when running in gas mode, and all the engines will be compliant when operating on diesel because of the Wartsila SCR systems. Furthermore, the engines will be double elastically mounted to minimise the noise. This special Wartsila technique will enable the ship to fulfil the DNVGL classification society’s Silent R rating, thus allowing the sonar equipment to be used without disturbance from underwater radiated engine noise.
The Wartsila equipment is scheduled to be delivered to the yard in mid-2018, and the vessel will enter service in early 2020.
