30,000 hours use with no cavitation issues

How do our CFD-designed, fully CNC-machined propellers save you money and reduce time out of the water? By designing them to minimise cavitation, our propellers have an extended working life (and extended replacement cycle), as testified by this recent positive feedback we received from Brian Nielsen, Technical Superintendent at DanPilot:…

Designed for efficiency and performance

Sea trial data from the Croswait / Bad Company 50, which is fitted with our fully CNC-machined Class S propellers, flow-aligned rudders, and flow-aligned struts for optimum efficiency and performance: LOA 50 Beam 16 Dry Weight 32,600 pounds- fighting weight 40k Cruise 30 at 1925RPM. 29 Gal a side Cruise…

Making winners

For the second year in a row, a boat fitted with CJR gear has scooped the $$multi-million top spot at the White Marlin Open. We send huge congratulations to Duffie Boatworks’ 64′ Billfisher, which took home a staggering $3.9million prize after landing a 72 pound White Marlin. Here’s what Captain…

Chat to us at Cannes Yachting Festival 9-14 September

Meet our team at Cannes Yachting Festival and ask us how our technical approach can support your next project. Our Technical Sales Director, Alex Stevens, and the team will be exhibiting in The Pantiero area of the show from 9th to 14th September. Come along to say hello and chat…

What is the best propeller system?

What is the best propeller system? Fixed pitch, or other? If you ask Chat GPT what is the best propeller system, it will tell you: “No single propulsion system is universally optimal. Selection should be application-driven, balancing efficiency, control, and lifecycle costs” At CJR, we agree. Our fixed pitch propellers will…

GOING LARGE

CJR Propulsion can now design and supply larger propellers, like this pair of 1.8m 5-blade propellers, which are leaving the factory this week and are destined for a 55m superyacht currently undergoing a refit. Using the latest CFD tools, our experienced team will identify the optimum bespoke propeller design for…

CJR Celebrates 10 years of Designing and Manufacturing Flow-Aligned Propellers

CJR Propulsion is celebrating 10 years since designing and manufacturing their first flow-aligned rudder system. Technical Sales Director, Alex Stevens, explains: “Back in 2014, this technology, also referred to as twisted rudders, was only being utilised by larger ships to improve efficiency. However, when a customer told us they needed…

How to choose a propeller: comparison trial data case study

The way a propeller is designed and manufactured can significantly improve speed and increase ride comfort. It can also reduce long-term costs thanks to lower fuel consumption and an extended working life. The case study below compares CFD-designed CNC-machined Class S propellers against hand-finished Class 1 propellers, so you can…