Next generation axial flow waterjet
KAMEWA ALUMINIUM A5
The most important feature of waterjets is the cavitation margin which for A5 has been able to improve significantly. Also the improved pump efficiency together with extremely good cavitation performance can be utilized for high bollard pull, which improves vessel acceleration as well as station keeping in challenging conditions. This means overall pump efficiency, steering efficiency and bollard pull have all been improved. These main features help to boost total efficiency to entirely new level compared to previous generation products. Also size selection allows more flexibility, depending on customer needs and valued operational features.
Superior performance and manoeuvrability
The aluminium series waterjet units are manufactured from strong, corrosion resistant materials. Only the impeller, shaft and steering reversing rods are made of stainless steel. All the other components are of aluminium construction based on thorough strength calculations to minimise weight. The completely new inlet duct design is fabricated from aluminium for light weight and optimised for hydrodynamic performance. The new pump is a single-stage axial-flow design providing a high volume flow with superior thrust in a wide speed range.
All aluminium series waterjets can also be supplied as booster units i.e. jet units without steering and reversing components. On delivery, the Kamewa aluminium series waterjets are painted and completely tested with inlet ducts for easy installation by bolting or welding. Including selected control system, built on waterjet. The Kamewa A5 aluminium waterjets are perfect for workboats, patrol boats, pleasure boats, and search and rescue boats – the new A5 will be the best customer choice. The A5 waterjet is an optimal solution for standard application with typical speed range of 25-40 knots. A5-series has a wide range of impellers available for optimal engine and gearbox selection.
Kongsberg waterjet designs and their hydrodynamic performance are proven and verified by our Hydrodynamic Research Centre. The Hydrodynamic Research Centre provides unique opportunities and capabilities to develop, analyse, test and verify waterjet designs. Methods for model testing and CFD analysis have been developed for more than 30 years. International partners have used the facilities as benchmark to their own test methods. Kongsberg is today the only waterjet manufacturer with an in-house capability to perform a complete set of tests and analysis to develop waterjets. Some of these tests cannot be performed elsewhere. The importance of the Hydrodynamic Research Centre for the quality and performance of the Kongsberg waterjets cannot be overstated. It not only lead to state-of-the-art products but also knowledge about their performance and characteristics that is unmatched. This is a significant advantage for all parties, which ultimately prevents issues with performance.
Installation space of A5 compared to our previous generation series is reduced by an average of 20%, which helps boat builders and designers to minimise engine room space.
More control system offers are available for the A5 compared to previous series. It comes preconfigured and components are installed and tested in our factory to minimise startup time at the yard.
- Clearly improved delivery time
- Reduced inboard footprint
- Reliable and harmonised design
- Simplified and reduced installation time that is built on our proven method of utilising skid mounted jet with fully mounted and tested components in the factory.
benefits for designers
- Best in class performance
- Simple installation procedure
- Performance accuracy
benefits For owners
- Efficiency equals less fuel consumption
- Standard solutions equals shorter delivery times, installation and design time
- Better parts availability
- Improved value for money
- Lower total cost of ownership