At CJR, our commitment to excellence in marine propeller services is unrivalled. We specialise in the production and replacement of propellers, catering to the diverse needs of stern gear applications.
Our dedication lies in delivering high-quality goods that meet every aspect of your stern gear requirements. We focus on providing our customers with exceptional propeller services at CJR, and our swift design and unparalleled manufacturing means that we can provide fully machined, custom Class S replacement propellers in as little as two weeks. Because of this, and our dedication to quality, CJR stands out as the only propeller manufacturer in Europe to provide this level of responsiveness, without sacrificing our industry-leading standard.
Our range of propeller services guarantees superior production with a focus on quality and precision. Whether it’s a bespoke order or a standard service, our offerings are tailored to suit your specific requirements.
Our Southampton-based company takes pride in offering premium-grade solutions for a variety of stern gear applications. Our dedication to quality and customer satisfaction is further enhanced by our commitment to making sure your vessels are operating at their peak efficiency.
Advancement in propeller design and manufacturing technology is essential to our ethos at CJR. We persistently strive to lead the industry, always innovating and testing boundaries. This can be demonstrated by the fact that CJR continues to lead the way when it comes to the growth of modern boat-building techniques and marine technology.
Contact us today to experience our cutting-edge propeller solutions and witness the CJR commitment to excellence in action.
About Us
Founded in 1948, CJR Propulsion’s success stems from an unwavering commitment to cutting-edge technology. Over 80 years in marine manufacturing have transformed us into a beacon of expertise in marine propellers.
Our continuous pursuit of innovation is evident in a remarkable 400% investment surge over five years. Pioneering the ultra-fast rapid propeller replacement service showcases our dedication, integrating 5-axis CNC machining centres and patternless robotic mould-making.
While CJR products are performance-evaluated, buyer decisions now prioritise attributes like efficiency, reliability, longevity, and low vibration levels. Explore our manufacturing process and witness our evolution into industry leaders.
Team experience and expertise
Our foundry team at CJR has over 150 years of combined experience, which is invaluable to our craft. This vast experience, along with our cutting-edge software, tooling, and innovative patterns, guarantees incredible efficiency and outstanding casting output.
Dedication to technological advancements is mirrored in our team’s development, fostered by ongoing investment, training, and mentoring. Praised for focus, responsiveness, and data-driven decision-making, our team sets CJR apart. These attributes are frequently praised by our satisfied clients.
Elevate your marine journey from the initial interaction to CJR’s seamless propeller production in Southampton. Our team’s dedication and ease of collaboration set CJR apart.
Services:
Unrivalled standards and innovative marine solutions
Take your boat design to the next level with CJR’s all-inclusive services, which include accurate shaft alignment for maximum performance, Finite Element Analysis, and CFD predictions. Our TrialsAPP swiftly addresses vibration issues, ensuring accurate sea trials data. Trust CJR with our expert propeller production, ensuring peak performance, meticulous care, and adherence to standards.
Some of our popular products include:
Propellers
Elevate your maritime experience with CJR’s precision-crafted boat propellers in Southampton. Every propeller at CJR is meticulously formulated to the highest standards, employing cutting-edge design and production technology for a bespoke solution tailored to each vessel. Our data-driven approach ensures unparalleled propulsion performance and efficiency as a standard. Compliant with any classification society regulations, our propellers offer complete peace of mind.
Our unwavering commitment to best-in-class quality is evident in strict quality control measures, meeting ISO 484 Class S requirements for optimal performance, smoothness, and efficiency. Sensitivity to factors like displacement and trim guides our thorough approach, consistently outperforming competitors with higher speeds, reduced fuel consumption, extended lifespans, and minimised cavitation, noise, and vibration.
Count on CJR for propeller packages that excel in longevity, efficiency, performance, and ride comfort, whether for a superyacht, motor yacht, or commercial vessel.
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Shaft Brackets
CJR’s integral shaft brackets (A and P) play a vital role in optimising vessel performance, crafted with advanced tools like CFD and FEA. Ranging from 45mm to 150mm in diameter and up to 600 kg in weight, these bespoke brackets minimise water disturbance, enhancing longevity. Our commitment to fully optimised stern gear setups is demonstrated through individualised bracket design, ensuring precise alignment and optimal performance. Leveraging the latest 5 Axis Machining Centres enhances precision in palm mounting to shaft bore alignment. CJR’s data-driven approach delivers solutions exceeding expectations, providing a comfortable ride, improved performance, and extended lifespan, contributing to industry-leading total cost of ownership.
With CJR, experience shaft brackets that redefine performance efficiency for a smoother, enduring voyage.
Stern Tubes
Our stern tubes are made from superior materials such as mild steel, aluminium, bronze, polyester, or epoxy GRP. They come in standard sizes from stock, fully machined and, if necessary, assembled with shaft seals and bearings.
Superior GRP stern tube assemblies that are impervious to delamination and saltwater conditions are guaranteed by our in-house manufacturing. IACS requirements are satisfied by hydrostatic testing, and a variety of fitting options, including glass-in, weld-in, and chockfast, satisfy a range of needs.
Select CJR for stern tubes that are highly durable and improve the performance and longevity of your boat.
Rudders
Standard Rudders
CJR employs advanced CFD and FEA design tools to customise rudders for optimal performance and longevity. With precise calculations for flow dynamics, hydrodynamic loading, and structural requirements, our rudders meet the highest standards of classification societies. Available in materials like NiBral or high tensile bronze, CJR offers versatile manufacturing approaches for tailored solutions to suit diverse applications. Notably, our standard rudders feature an aerofoil section, enhancing their overall efficiency and performance.
Flow Aligned Twisted Rudders
Through an innovative CJR approach, we precisely simulate forces impacting propulsion systems, predicting their effects on performance. This enables the design of a uniquely optimised, ‘twisted’ rudder profile aligned with propeller flow angles. This design reduces suction pressure peaks, minimising cavitation, vibration, and vessel resistance while enhancing overall performance. Integrated into a fully optimised propulsion package, these rudders contribute to up to a 2kts speed increase, improved efficiency, reduced noise, and potential fuel savings of up to 3%. Manufactured to meet classification society rules, including IACS societies.
Get a closer look at the key features of flow Aligned Twisted rudders
Coupling
CJR offers a diverse range of shaft couplings, including keyed taper and keyless tapered parallel clamped options. Our precisely designed rudders utilise FEA and CFD tools for optimal performance and longevity.
Explore the full spectrum of CJR’s cutting-edge propulsion solutions by visiting our comprehensive Products and Services page. Unleash the power of innovation, performance, and longevity for your vessel. Click here to discover more about our products and services.
Contact CJR
Connect with CJR effortlessly for all your marine propulsion needs. Call us at +44 (0)23 8022 2032 or email us at info@cjrprop.com for a free consultation or quote.
You can visit us at CJR Propulsion Ltd 70-72 Quayside Road Bitterne Manor Southampton SO18 1AD United Kingdom to discuss personalised solutions for optimising your vessel’s performance.
