Hybrid upgrades to give vessels more attractive environmental profiles

'Edda Flora', one of the 2008 ships getting a hybbrid upgrade 'Edda Flora', one of the 2008 ships getting a hybbrid upgrade
Industry Database

The Wärtsilä Hybrid Upgrade solution, has been selected for retrofitting two offshore construction vessels owned by Norwegian operator Østensjø Rederi.

The upgrades will allow less use of the ships’ engines with correspondingly lower levels of exhaust emissions while operating in dynamic positioning (DP) mode, and will also lower emission levels in all other operational modes. The order with the technology group Wärtsilä was placed in the third quarter of 2020.

Funding from Enova, the Norwegian government enterprise that promotes the environmentally friendly production and consumption of energy, has been an important contribution to this project.

The two ships, the Edda Fauna and Edda Flora, were built in 2008. The customer opted for the Wärtsilä Hybrid Upgrade solution in order to give the ships a more attractive environmental profile for potential charterers. The Wärtsilä Hybrid Upgrade solution will include the company’s new electronic DC bus-link, which allows a vessel to operate in DP 2 and 3 modes with a closed DC bus in hybrid, and an open bus on the AC system. The reduced running of the engines saves fuel and lessens the carbon footprint, while engine maintenance requirements are also alleviated.

“We intend to be a shipping company that leads in sustainable operations. Today’s carbon footprint is to be reduced through systematic efforts and continued technical development at all levels. This is why we have chosen to upgrade these vessels to hybrid propulsion, which is an area of technology where Wärtsilä excels,” says Egil Arne Skare, Chief Project Officer, Østensjø Rederi.

“The Wärtsilä Hybrid Upgrade solution aligns with our five strategic themes; Towards Zero Emissions, Efficiency, Safety, Reliability, and Fuel Flexibility. There is a growing trend in the marine sector towards hybrid propulsion, with more and more companies taking advantage of the benefits it offers,” said Helge Solberg, Senior Proposal Engineer, Wärtsilä Marine Power.

Delivery of the Wärtsilä equipment to both vessels is planned for January 2021.

By Jake Frith

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