New waterjet for fast craft

With a maximum input power of 1100 kW (1475 bhp) the new UltraJet UJ525 is the first model to be fully designed using Solidworks 3D capability enabling a high degree of accuracy, lower tooling costs and the ability to optimise the flow characteristics of the jet.

The first UltraJet UJ525 installations were ordered for a new 18m catamaran project even before the jet design had been finalised, but were delivered on time to meet the customer’s requirements.

This waterjet is designed for single, twin, triple or quad installations in boats up to 200 tonnes. It provides a high performance solution where size and cost constraints have previously made it difficult to provide an optimised waterjet package.

The UJ525 incorporates several improvements which include a redesigned reverse deflector with improved flow characteristics to increase the reverse and manoeuvring thrust. There are also a number of improvements on the UltraJet UJ525 to improve durability, service life and maintainability.

When requested, interceptors can also be fitted to the UltraJets to provide fuel efficient steering and to optimise the trim of the boat with varying loads. Various interceptor control systems are available.

In common with other Ultra Dynamics’ waterjets, the new UJ525 is constructed in marine grade aluminium alloy, with the impeller, its housing, shafts and operating cylinders for steering and reverse being made of stainless steel. The UJ525 may be configured for the complete range of UltraJet Control systems, including JetMaster joystick control with a multiple-range of options. This system offers features previously only available on more expensive systems including integration of diesel engine, throttles and waterjet management functions into a single intuitive control system. It also incorporates safety features and can also interface with autopilots.