IMO regulations fuelling LNG vessel use
LNG will be used to fuel a German research vessel for the first time to meet the IMO's Tier III regulations.
Curently under construction at Germany’s Fassmer shipyard for Federal Maritime and Hydrographic Agency (BSH), the 75m long Atair will use Tier III classification Wärtsilä engines and exhaust cleaning systems.
Kai Twest, head of the ships and equipment division at BSH, said: “With Wärtsilä's dual-fuel and SCR technologies, the vessel will fulfil the IMO's Tier III regulations in all operational conditions, whether sailing on LNG or on diesel fuel.”
Wärtsilä will supply 6-cylinder Wärtsilä 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 Wärtsilä LNGPac fuel storage, supply, and control system.
The exhaust cleaning systems are based on selective catalytic reduction (SCR) technology and the LNGPac system. The SCR technology will be used in instances where the engines are running on marine diesel fuel because LNG supplies have been exhausted.
The engines will be double elastically mounted to minimise the noise, enabling the ship to fulfil the DNVGL classification society's 'Silent R' rating and allowing the sonar equipment to be used without disturbance from underwater radiated engine noise.
The Wärtsilä equipment is scheduled to be delivered to the yard in mid-2018, and the vessel will enter service in early 2020.
"Our dual-fuel technology is unique when it comes to small bore medium speed engines, and the extended service intervals and economic fuel consumption of the Wärtsilä 20DF engine enable lower operating costs than is possible with high speed engines,” commented Lars Anderson, vice president of engine sales at Wärtsilä Marine Solutions.
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