MOMENTUM NEWS FROM CJR PROPULSION ISSUE 3 Spring 2012 www.cjrprop.com Preferred TrialDAS Going green CJR launches its latest innovation with the CJR lays out plan to help builders achieve supplier TrialDAS trials data acquisition system RINA Green Plus Notation CJR Newsletter www.cjrprop.com ISSUE 3 Spring 2012 Introduction CJR approved by the big six! Approved by all six of the marine industry’s biggest classification societies, CJR can now pitch for the very best projects around the world Welcome to the 2012 Seawork issue factor when purchasing a we hope to see you on the stand for CJR is now approved by all six and rapid process. We are now one of the CJR newsletter, Momentum. propulsion package. a chat about CJR’s comprehensive of the marine industry’s biggest of the only propeller and sterngear design and manufacturing solutions classification societies and, in manufacturers which is able to boast Despite the turbulent trading In this issue, we’re talking about or simply to discuss how we can addition, is recognised as the only all six and this enables us to pitch conditions, 2011 proved to be another projects which have benefitted from make a positive difference to your UK manufacturer certified to build for the very best projects around buoyant year for CJR Propulsion and CJR and VEEM’s advanced design next project. P-brackets to Lloyd’s Register has always been to exceed the highest the world.” our Australian partners, VEEM. We and engineering prowess and how standards. The company’s recent industry standards wherever possible, benefitted from sustained growth performance and efficiency has been Many thanks approval by ABS can now be not least as it’s in the interest of both Mark Russell added: “It has taken within the commercial/work boat improved through a more scientific added to its existing awards from CJR and our customers for us to a real team effort to get to this market – where yards and specifiers approach to propeller and sterngear Germanischer Lloyd, DNV, Lloyd’s do so. Being recognised in this way point and meet all the individual have increasingly chosen CJR based design and production. We also Register, BV and RINA and makes means we are also able to quote for requirements for each society. Each on our performance credentials talk about CJR being recognised CJR one of the only global propeller projects many of our competitors department within CJR had its own and advanced CFD program, which for its commitment to safety and manufacturers to be recognised by cannot legally fulfil and that puts us role to play and I am thrilled that we continues to feature in the press on a compliance and our appointment as all six bodies. at an obvious commercial advantage. have achieved this level of recognition regular basis. In addition, significant UK distributor for CIP Marine. in such a short space of time. For gains have also been made within CJR’s head of design, Marek “Getting to the stage where we our customers, it demonstrates that the superyacht and leisure marine With that in mind, we invite you to Mark Russell Skrzynski, commented on the news: are approved by all the major they are working with an organisation sectors, as owners begin to consider take a look at what we’ve been up Managing Director “The classification process is an area classification societies has actually that understands the importance of fuel efficiency as a more important to and, if you attending the show, in which we continue to invest and required very few changes to our regulation and compliance and one reflects our continued commitment to existing systems and procedures, which is truly committed to quality safety and compliance. Our objective which makes it a fairly trouble free and exacting standards.” “ We have been working with some of the best superyacht builders in the business...” 2 3 CJR Newsletter www.cjrprop.com ISSUE 3 Spring 2012 CASE STUDy “ Any company opting for Green Plus will not only get global recognition but also help distinguish itself from the competition.” has identified where it can assist its CJR has developed a procedure of Boat: Sunseeker 73 Manhattan clients in reaching the highest level, flow analyses, combining CFD with with MAN 1550hp Green Plus Yacht Platinum. vortex lattice lifting surface methods, which allows analysis of the hull Since the introduction of 70 Manhattan CJR’s head of design, Marek behaviour in either a full planing or in 2007, CJR has analysed and Skrzynski, shares his thoughts: displacement conditions. developed sterngear and propellers “After researching the criteria RINA across the range of engine options. uses to assess a builder or vessel, “Every boat aspiring to achieve the The result of that development and understanding the products Green Plus notation should be fully was implemented to the new 73 and services we supply, it was analysed to enable optimisation Manhattan, based on slightly modified clear CJR could make a significant of her appendage and propeller 70 Manhattan hull. The boat was contribution to achieving RINA Green tunnel shape design. At CJR we use equipped with low drag P-brackets, Plus. This is largely accomplished by our own advanced computational highly efficient propellers, and rudders supplying products and services of fluid dynamics department but aligned with the flow of propeller Going green the highest quality and fulfilling RINA there are other methods which can race. Significant improvements requirements expressed in the RINA produce similar, if less detailed, were recorded over the initial speed rules for pleasure and commercial results. Without a comprehensive estimation, which was 33.5kn. In reality, yachts.” Skrzynski continued: knowledge of the propeller wake, the boat achieved 36.2kn on a recent CJR lays out plan to help builders achieve RINA Green Plus Notation “Looking at a propulsion system, the you simply can’t design the most trial. Additionally separate trials were fuel consumption and emissions can efficient propeller. In addition, with carried out to record the impact of new be minimised in two ways. Firstly, CFD you are able to analysis the flow aligned rudders. The new rudders by implementing highly efficient rudders. With their section aligned added an additional half knot to the top CJR Propulsion has today released The voluntary notation allows what has become a increasingly propellers; and secondly, by applying with the flow, you can further reduce speed and a gain of up to two knots was details of how it can assist builders to choose whether they competitive market. low drag passive parts of propulsion drag and improve efficiency. This is observed in the cruising speed range. organisations looking to achieve wish to construct their yacht systems and appendages of the just a few of the areas where our RINA’s notation on environmental according to the notation. However, This industry wide transition to hull, such as shaft brackets, shaft design services can help and we are The results of trials such as this sustainability. First launched back in the advantages of doing so make it becoming more environmentally fairings, propeller tunnels obviously more than happy to provide clearly demonstrate the potential for 2008, the ‘Green Plus’ notation has difficult to imagine why any builder aware has led CJR to demonstrate and rudders.” the finished products as well, making significant performance and efficiency recently started to gain traction and wouldn’t place a greater emphasis where its propulsion systems and it even easier for a builder to choose improvements, which could easily and several builders, including key CJR on environmental responsibility with design services can be of benefit to To achieve these objectives, CJR CJR over the competition,” cost effectively be implemented other customers Princess and Sunseeker, this in mind. Any company opting for an organisation looking to achieve requires an understanding of the Skrzynski concluded. almost any other unique, semi or have both now been awarded the Green Plus will not only get global this standard. Alternatively, for characteristics of the flow around the production vessel. Green Plus and Green Plus Yacht recognition but also help distinguish those which have already achieved hull, including the working propeller. Gold awards respectively. itself from the competition in a lower level of the notation, CJR In order to obtain that information 4 5 CJR Newsletter www.cjrprop.com ISSUE 3 Spring 2012 Preferred supplier: CJR continues to grow relationship with key builders Since the introduction of its bespoke NahodhaII installation, which was designed computational fluid dynamics to achieve maximum thrust at full (CFD) department in 2010, CJR has Operating in the busy and testing engine speed and full ahead motion, witnessed a 40 per cent increase in waters around the Port of Mombasa, also benefitted from a complete CFD commercial projects year-on-year. Nahodha II, which is based on an analysis including the shafts, stern What’s more, the Southampton- original hull from Camarc Design, tubes, P-brackets and rudders – to based manufacturer has repeatedly came with a challenging brief that provide optimum performance been chosen by the most respected focused on quality, speed and ease of and longevity. builders in the industry, as manoeuvrability. Responsible for the Marek Skrzynski, CJR’s head safe transportation of pilots to and Discussing the project, Ian Strugnell, designer explains. from ships, as well as the escorting of director for Mustang Marine cargo and significant vessels into the commented: “We managed to Following similarly successful port, the multi-million pound build achieve a maximum speed higher projects over the past 24 months, needed to be capable of operating in than the design target of 22 knots 2012 has already seen CJR deliver monsoon conditions; handling waves – with the extra performance being bespoke propulsion packages to up to five metre and wind speeds of delivered through a combination some of the commercial’s sector’s up to 40 knots.