We’re proud to have played a role in the trailblazing Arksen 85 Project Pelagos project, which recorded an average fuel consumption of just 45 litres per hour at 10.8 knots when crossing the Atlantic in December 2025. Efficiency has been engineered into every detail of the Arksen 85 – from hull form to sterngear. The result? Fuel consumption is reduced by around 50% compared with a typical production semi-planing motoryacht of similar size, which would normally consume 90–100 litres per hour. We worked closely with their team to design and manufacture flow-aligned rudders and fully CNC machined Class S propellers, to deliver optimum efficiency alongside improved comfort and reduced noise.
It’s a valuable example of what is possible when design, engineering, and purpose are aligned.
Here’s what Jim Mair, Arksen Technical Director, had to say about our sterngear package:
“When CJR Propulsion designed the propellers using Computational Fluid Dynamics, they’ve paired the rudders to match. The twisted profile of the rudder is optimised to match the wash coming from the propeller. So wherever that wash hits it, there’s a much higher level of optimisation. That reduces noise and vibration, reduces fuel consumption, it just makes it a much more efficient rudder. It’s also a pretty beautiful thing to look at.”