Fertiliser company Yara and Kongsberg have selected pulling azimuth pods and bow thrusters for the world’s first fully electric and autonomous container ship, Yara Birkeland
Fertiliser company Yara and Kongsberg have selected pulling azimuth pods and bow thrusters for the world’s first fully electric and autonomous container ship, Yara Birkeland.
Norwegian propulsion company Brunvoll beat competition from a wide field to win the deal for the high-profile project. It will supply two PU74 pulling azimuth thrusters of 900 kW and two FU63 tunnel thrusters of 700 kW each. The pods and bow thrusters feature highly efficient big, slow-turning propellers of 2.2m and 1.75m diameter respectively.
Brunvoll collaborated closely with naval architect Marin Teknikk to optimise the hull and propulsion. The companies conducted multiple model tests to deliver an efficient configuration, including streamlining the thruster gearboxes.
Brunvoll vice president of sales and marketing Per Olav Løkseth told Marine Propulsion that the company’s strong relationships and reputation had helped it secure the fiercely contested contract. The flexibility to deliver the propulsion arrangement within a tight timeframe was also crucial, he said.
Yara Birkeland will be powered by a 6.8MWh battery pack when it is delivered in 2020. The vessel will transport fertiliser between Yara’s factory at Herøya and the ports of Brevik and Larvik, cutting around 40,000 truck journeys a year.
Kongsberg is leading the project to deliver ship systems and automation for the vessel. Its acquisition of Rolls-Royce’s commercial marine business, which includes podded propulsion and thrusters, is due to be completed in March.