About Us

As the marine industry has developed and the demand for highly efficient, performance products has continued to grow, CJR has emerged to become one of the UK's most respected marine manufacturers; supplying precision engineered propeller and sterngear packages to a host of leading commercial, leisure and superyacht brands. To achieve and maintain its position in the marketplace, CJR combines decades of experience with continuous investment in the latest technology and engineering prowess, supplying products which exceed customers' expectations and demonstrate a genuine advantage over the leading competitor's products.

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Of the many elements which make CJR unique and successful, it is the company's investment in technology which truly sets it apart from the competition. Since CJR's formation in 1948, the company has gone from strength-to-strength and today boasts one of the most advanced marine manufacturing facilities in the country. From its multi-million pound 'true 5-axis' CNC machining centre, to its advanced computational fluid dynamics programme and in-house 'supercomputer', CJR 's investment has outstripped industry standards by over 400 per cent in the past five years alone.

Looking ahead, the industry is moving in one direction. As the price of oil continues to rise unabated, customer requirements are constantly evolving and efficiency has grown to become a key deliverable. Performance remains the yard stick against which CJR's products are measured; however, efficiency reliability, longevity, and the lowest levels of vibration are increasingly contributing to the buyer's decision making process. This shift towards a greater emphasis on lifetime cost of the propulsion system means CJR is perfectly placed to play an even more significant role in the future.

  • Bearings

    Suitable bearings are required in stern tube and rudder tube assemblies.

  • CJR Propellers

    Every boat is different and the first sign of this difference can be seen in propeller operation.

  • Couplings

    Couplings are the elements that transfer torque from gearbox to the shaft and because of their role they are under strict supervision of class societies.

  • Ducted Propellers / Nozzles

    CJR can offer ducted propellers systems including any type nozzles and impellers under full IACS approval.

  • Rudder Tubes Assemblies

    CJR manufactures rudder tube assemblies designed for hull trough installation to suit stock diameter from 30mm up to 180mm.

  • Rudders

    Rudder profile and sections are carefully selected to specific regime of the flow around sterngear.

  • Shaft Brackets

    Our shaft brackets are designed bespoke to achieve optimum performance in line with every vessel individual requirements.

  • Shaft Seals

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  • Shafts

    Shaft design starts from designing entire shaftline incorporating all the components from the propeller to the gearbox and including the bearings to make the system safe, vibration free and efficient in operation.

  • Stern Tubes / Shaft Logs Assemblies

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  • Tie Bars

    Tie bars connect both rudder tillers on twin rudder boats to simply synchronise them together.

  • Tillers

    Tiller is important part of steering gear which design is covered by strict rules of classification societies when the boat is built under class.

  • Shaft Alignment

    Using laser technology and precision engineering a bespoke shaft alignment tool has been developed to aid the boat builder’s task of accurately fitting and aligning the stern gear.

  • PropSmith

    For the fast, simple and precise installation and removal of propellers, PropSmith is the professionals’ choice.

  • TrialDAS

    TrialDAS is a new data acquisition system specifically tailored for monitoring sea trials. The system is based on rate gyros, GPS, accelerometers and magnetic field sensors to record every movement of the boat.

  • Keyless Hub Hydraulic Kit

    Quick and convenient method of pushing and releasing large propellers or couplings to and from the keyless shaft cone.

  • Hydraulic Propeller / Coupling Pusher / Puller

    Quick and convenient method of pushing and pulling propellers or couplings to and from keyed shaft end.

  • TrialsAPP

  • Quality Policy

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  • Design

    We don’t only make propellers, we analyse entire propulsion system of each boat starting from hull resistance prediction and hull propulsive factors.

  • Pattern Making

    Precise pattern assures high accuracy of final product and it is one of the most important stages in manufacturing process

  • Casting

    CJR's foundry team has the combined benefits of over 150 years experience in the industry.

  • Machining

    CAD/CAM controlled machining of the cast propellers, P brackets and rudders are undertaken to the fine tolerances of their original design

  • Finishing

    Our processes ensure that the geometry of our finished castings is always true and accurate to the original design.

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CJR Propulsion Ltd
70-72 Quayside Road
Bitterne Manor
Southampton
SO18 1AD
United Kingdom

Tel: +44 (0)23 8022 2032
Fax: +44 (0)23 8021 1832

info@cjrprop.com