Brochure - A3 Waterjets
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Rolls-Royce series of waterjets

Rolls-Royce waterjets – the new Kamewa A3 New compact reversing bucket – small dimentions, greater reversing thrust. New steering nozzle for improved steering response and higher speed in turns. 2 2 New high efficiency stainless steel mix flow pump. Modular interceptor trim tabs.

Built on hydraulic valve block. Integral thrust bearing mounted on the inlet duct. Inlet duct made from sea grade aluminium plate. Weld-in or bolt-in options. The A3-56 is the first frame size to steel, similar to the new S3 series. An gives about 3 knots higher speed be launched in a major redesign of increase in propulsive efficiency of in full speed turns and improved the Kamewa A-series aluminium 2-3% has been achieved, or about 1 steering response. At the same time, waterjets from Rolls-Royce. It is knot increase in speed for the same 250kgs has been shaved off the total supplied as a...

Rolls-Royce waterjets – the new Kamewa A3 The pump unit is based on experience from the SII range, now significantly enhanced by using the latest computer design techniques, verified in the cavitation tunnels at the Rolls-Royce Hydrodynamic Research Centre. The cavitation margin has been increased so that, in most cases, a waterjet one size smaller will give the same performance. For maximum waterjet efficiency the inlet, pump, guide vanes and nozzle have been optimised. These images result from computational fluid dynamics (CFD) analysis with colours indicating pressure at different...

Main data A3 sizes will be introduced progressively Sizes will be introduced progressively

Control system A Rolls-Royce control system is used to control the steering nozzle and the reversing bucket of the waterjet unit as well as the interceptors. The main engines, clutches and bow thrusters can also be controlled by the control system. The A3 series of water jets are equipped with an electronic remote control system. The control system is specially designed to create a single, well- integrated and highly effective The Rolls-Royce remote control system combines a high-speed microprocessor and robust hydraulics which gives full 'finger-tip' control. The control systems are...

NORTHERN EUROPE Kokkola (Waterjets) (Propulsion/Deck Machinery) Paris (Naval Marine) Norderstedt (Stabilisation) Rotterdam, Pernis (Head Office, Merchant) Aalesund (Control Systems) Aalesund (Ship Design, Bergen (Engines) Bergen (Foundry) Bergen (Steering Gear) Brattvaag (Deck Machinery) Hareid (Rudders) Longva (Automation) Oslo (Repr. Office) Tennfjord (Steering Gear) (Head Office, Offshore) (Ship Design, Offshore) Ulsteinvik (Propulsion) Volda (Propulsion) Gniew (Deck Machinery) Kristinehamn (Propulsion) UNITED KINGDOM Bristol (Head Office, Naval) Bristol (Marine Systems) (Head Office,...

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