Kongsberg S-3/CA

The Kongsberg Maritime Kamewa S-3/CA waterjet incorporates numerous improvements made possible by advanced design calculation methods and testing and production techniques. The compact reversing bucket and steering nozzle of the S-3/CA waterjet enables superior position keeping and maneuverability at low and high speed. This reduces fuel consumption and lowering noise and emissions in harbor maneuvering, as well as saving time and increasing safety. In high speed turns the steel series maintains speed very efficiently, which is a highly appreciated benefit for patrol vessels and others alike. At the heart of the waterjet is the fully stainless steel mixed flow pump. There are different impellers depending on application. Efficiency has been achieved by using the latest computational fluid dynamics (CFD) techniques combined with extensive testing in the cavitation tunnels at the Kongsberg Maritime Hydrodynamic Research Centre. The S-3/CA waterjets can be individually optimized and selected based on boat design requirements and operational profile. The steering nozzle design in S-3/CA provides 2 – 3 knots higher speed in tight turns. In addition, full scale tests confirm the nozzle to be significantly quieter compared to the earlier design. The S-3/CA is always equipped with a duplex stainless-steel pump unit providing the best possible durability under any circumstances. High end components are used, providing long life and reliable service. These are enabling up to 10,000 h or 5-year time service/replacement of wear parts. The S-3/CA waterjets standard inlet provides very good low and mid speed performance. In practice, this means increased bollard pull thrust comparable to conventional propulsors. High-speed inlets are available for speeds exceeding 45 knots.