The tanker shipping company Hafnia wants to improve the propulsion efficiency of its ships. To this end, the company has now ordered retrofit solutions from Wärtsilä.
Ten of Hafnia’s Bird-class oil and chemical tankers will be equipped with Wärtsilä’s EnergoFlow and EnergoProFin. [ds_preview]
The combination of the two Wärtsilä systems ensures an optimized water flow at the propeller and thus significantly improves the efficiency of the propulsion, it is said. The order was booked by Wärtsilä in October 2023.
EnergoFlow is an innovative pre-swirl stator that ensures optimal flow to the propeller, reducing fuel consumption and emissions under all operating conditions. The EnergoProFin is an energy-saving propeller cap with fins that rotate together with the propeller. It reduces the energy losses caused by the propeller hub vortex, increases the overall efficiency of the propulsion system and significantly reduces underwater noise.
Hafnia reduces emissions
Improving the ships’ fuel efficiency reduces emissions, lowers operating costs and improves both the Carbon Intensity Indicator (CII) rating and the Energy Efficiency Index for Existing Ships (EEXI).
“There are many benefits to improving the operational efficiency of our vessels’ propulsion systems and we look forward to installing these innovative Wärtsilä solutions,” said Ralph Juhl, EVP, Technical Director at Hafnia. “At Hafnia, we are working hard to decarbonize our operations and these retrofitted solutions will support that commitment.”
“Wärtsilä’s OPTI design method takes advantage of computational fluid dynamics together with our extensive in-house expertise. The EnergoProFin propeller cap and EnergoFlow pre-swirl stator work together to deliver significant fuel savings and better environmental performance, which is key for today’s leading operators,” adds Francois Emin, Product Manager – Propulsion, Wärtsilä.
The Wärtsilä equipment is scheduled to be delivered from 2024. The project will be implemented over a two-year period for the ten vessels.
