Our new, ultra-efficient Sailfish propellers are currently undergoing round two real-world testing with a number of custom and production boatbuilders. We were in the USA last week to support the trials, which includes the ultimate test: how this uniquely shaped propeller performs backing down.
Initial results are very positive – we can’t wait to share more details when we have them.
CJR’s highly-efficient CNC-machined, Class S MRK Revolution, Billfish, and MRKSuperprop propellers combined with flow-aligned struts, and flow-aligned rudders typically deliver up to 10% efficiency gains compared to standard sterngear systems. With the Sailfish, we can further enhance performance by up to an extra 1.5%-3% depending on vessel speed.
The Sailfish, which was launched at METSTRADE 2025, is designed using the science of biomimicry. Its distinctive undulated blade design actively controls vortices by directing water flow at the trailing edge, reducing tip vortex losses. For our customers, this means greater efficiency, lower fuel consumption, and higher speeds for the same torque helping maximise engine performance. A reduced trailing edge thickness also eliminates “singing” and minimises vibration, without the need for an anti-singing edge.
Beyond performance, Sailfish is built with practicality in mind. It can be retrofitted onto a standard shaft taper and is available in diameters up to 1500mm with custom blade configurations to suit a wide range of vessels and applications.
Performance gains from the patent-pending CJR Sailfish propeller have been independently verified by Cape Horn Engineering. Suitable for everything from sportfishing boats and motoryachts to workboats and patrol vessels, it pairs seamlessly with diesel, hydrogen, and electric propulsion systems to deliver optimal results.
Please get in touch if you’d like to find out more: [email protected]