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CJR Propulsion

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CJR Propulsion

Supplying precision engineered propeller and sterngear packages to a host of leading commercial, lei

17/08/2026

"THE DIFFERENCE IN PERFORMANCE IS AMAZING": Thanks to Christopher Choy for sharing his experience of the noticeable performance improvement as a result of fitting CJR flow-aligned rudders, flow-aligned p-struts, and Class S propellers to 'Sneak Attack'.

"I have been fishing on Sneak Attack for 8 years during the Bisbees tournament as a fly in crew from Kona Hawaii. The difference in performance is amazing. With flow aligned package the wake is cleaner the boat feels smoother at ALL speeds. Pretty amazing stuff! Great job to you guys!" Christopher Choy

Sneak Attack took 2nd place overall at the 2026 Bisbee's Offshore Fishing Tournaments East Cape Tournament earlier this month, with a 488lb black marlin earning them over $410,000. Christopher has been crewing Sneak Attack at the Bisbees for 8 years, so he has a lot of experience onboard this vessel - which is why his feedback about the noticeable difference he experienced on board this year after CJR sterngear was fitted means such a lot.

Launched in May this year, sea trials showed our sterngear upgrade, alongside new MAN engines, gained an extra 7 knots - hitting 41.5 knots at 2355 RPM. On this project we worked closely with an expert team, including Brian at , Cody at Premium Marine, Justin at , and Troy at

Don't just take our word for it - the results speak for themselves.

14/08/2026

Congratulations to the team at on reaching another big milestone as the latest 120 enters the water at the UAE shipyard.

We're proud to partner closely with , providing optimised sterngear solutions and ongoing technical support. It's fantastic to see this latest achievement and we look forward to continuing our work together and building on this success.

29/07/2026

Views from La Spezia onboard a 96-foot production motor yacht during sea trials yesterday.

While our in-house CFD modelling software provides highly accurate performance predictions, nothing replaces real-world testing. Sea trials are the ultimate test, allowing us to analyse speed, handling, vibration, and overall vessel performance to ensure our propellers are delivering exactly as expected and meeting our customer's requirements. Using wireless sensors, CJR's TrialsApp system was developed by our engineering team to make gathering this essential data as easy as possible. It's quick, portable, and delivers accurate real-time reports in pdf format that can be viewed before the yacht returns to shore. For this trial, it only took around two hours to set up, get out, gather the data, and finish up - saving the team valuable time.

The data we collect enables us to fine-tune performance where needed and, for production boatbuilders, provides valuable insights that can help optimise future vessels across the range.

With sunshine and stunning Italian scenery, days like these might not look like "work" from the outside. But sea trials are a critical part of the process and an important stage in our partnership with customers, ensuring every vessel performs to the highest standards before delivery.

26/07/2026

Three cheers for Graeme Lloyd and John Kelly who successfully completed their fundraising walk from Bovington in Dorset to Portsmouth last month. We were very happy to support them to really 'push the boat out' on this mammoth trek by 3D printing the replica warship and tank costumes which they wore throughout the walk.

The duo visited a number of military sites along the way, clocking up around 100 miles in seven days during the sweltering heat of the first summer heatwave! So far, they have raised nearly £6,000 for MND Association and Veterans' Foundation - a fantastic achievement. Our 3D printed naval frigate can now be spotted as part of a flower display in Lee on Solent.

Congratulations again to Graeme and John on this remarkable accomplishment, and thank you for letting us play a small part in raising money for such worthwhile causes.

17/07/2026

We're pleased to announce that Scott Davis has joined our team this month in a newly created Production and Manufacturing Manager role.

As our business and customer base continues to grow, Scott is responsible for developing and implementing processes that ensure we can continue to maintain the highest quality standards at our state-of-the-art Southampton facility.

Scott leads our production activities across CNC machining, foundry operations, finishing, and associated manufacturing processes, with responsibility for production targets, quality standards, and health and safety. He brings extensive experience of managing production facilities from across the marine, motorsport, aerospace, defence, science, and space sectors, including Machine Shop Manager roles at SailGP Technologies and Peregrine MLS.

Investing in experienced leadership within our production team strengthens our operations, enhances efficiency, and helps us continue delivering the quality, reliability, and service our customers expect.

Please join us in giving Scott a warm welcome to our team.

Photo l-r: Scott Davis, CJR's Production and Manufacturing Manager with CJR's Operations Director, Oliver Goodley in front of one of our suite of CNC machines located in our state-of-the-art Southampton facility.

15/07/2026

Spot our flow-aligned rudders, flow-aligned struts, and Class S propellers in this picture from underneath BadCo 50. This shot was taken as this performance gameboat was being lifted onto the deck of the 175 mothership earlier this year. She's now been deployed in Madeira - and we can't wait to see her in action.

Built with the ambition of becoming the first gameboat to circumnavigate the globe, each element of BadCo 50, including the sterngear, has been engineered for maximum efficiency, reliability, and performance. We're proud to have worked closely with all the teams involved in this remarkable project.

Sea trial performance:
• 30-knot cruise at just under 30 gallons per hour per side
• 38-knot top speed fully loaded
• Up to 40 knots at half load

Performance highlights:
• LOA: 50 ft
• Beam: 16 ft
• Dry weight: 32,600 lb (40,000 lb fighting weight)
• Cruise: 30 knots @ 1,925 RPM – 29 GPH per side
• Cruise: 31 knots @ 2,025 RPM – 33 GPH per side
• Cruise: 33 knots @ 2,125 RPM – 37 GPH per side
• Top speed: 38 knots fully loaded – 45 GPH per side
• Trolling: 8.5 knots @ 700 RPM – 2.7 GPH per side

As the owner put it after sea trials:

"With 6 people on board and 3/4 fuel and full water, she hit 39 knots in real conditions and weight. At half load, she'll do 40 knots. 33.8 knots at 74 gallons an hour for a 50-footer. 0.456 NMPG. What a machine."

Bad Company Fishing Adventures

08/07/2026

Understanding our customers' objectives, specific operational requirements, and any technical challenges is central to the success of a project. By taking the time to visit our customers, listen to their needs, and work alongside their teams, we can achieve the best outcomes while building partnerships that grow stronger over the long-term.

This week, we were back at to review existing and future jobs with the team. (Photo l-r Eloi D'REGEL, Sunreef, Andrew Schrooten CJR Propulsion, Patryk Anioł, Sunreef and Alex Stevens, CJR Propulsion)

We know that face-to-face meetings like this provide us with valuable insights that can't always be gained via email, on the phone, or via Teams. They give us the opportunity to see project progress first hand, better understand any opportunities or challenges, and discuss what we can do to support upcoming builds.

Thanks to the team at Sunreef for welcoming us this week - we're proud to work with you towards our shared goal - to help make each vessel the best it can be.

04/07/2026

For our sportfishing customers it's all about achieving optimum performance and, of course, catching fish. Just over six months after we carried out our initial data-gathering sea trial for Home Made, she is now equipped with a complete bespoke CJR Propulsion flow-aligned package, including flow-aligned struts, flow-aligned rudders and a new pair of CJR Billfish propellers.

Captain Adam has reported catching nine blue marlins and three white marlins in just two fishing trips - so we have a satisfied customer.

Big thanks to Mike at Intercoastal propeller and Brian at By working closely together, we turn ideas into results - and the proof of success is the happy customers we create along the way.

23/06/2026

Our Class S propellers being fitted to 'Skin Deep' 75'.

Working closely with the team at Scarborough and our partners , we've also custom-designed a set of flow-aligned rudders for optimum performance.

This is not the first time we've worked with the Scarborough team. 'Gametime' 75' (which scooped over $1.8million when it won the Big Rock Blue Marlin Tournament in 2024), 'The Vintage' 67', and 'Triple S' 72' are also fitted with our sterngear.

20/06/2026

More sea trials for Joel Kmetz in the USA. This time he's enjoying hitting 41 knots on board a 46.

'151°' is fitted with our flow-aligned package and Class S propellers, custom designed for optimum performance. Thanks to our partners . - another great project together!

Address

70-72 Quayside Road
Southampton
SO181AD

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8am - 5pm
Friday	8am - 3pm

Website

http://www.cjrprop.com/

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