UltraJet 340HT bulks up the bollard pull

As with all other HT waterjets in UltraJet’s range, the UJ340HT unit was designed to provide excellent high speed and cruising performance, with superior cavitation resistance at low speeds and when under more extreme load, towing, or thrust conditions. The 340HT will be of interest to builders and operators of seismic vessels, landing craft, cargo carriers, and commercial towboats, where high static thrust is a prerequisite.

The UJ340HT has a similar physical size and weight to the standard UJ340 waterjet but utilises a different impeller to achieve higher thrust per horsepower compared to the standard UJ340 and other similar size waterjets on the market.

Following Ultra Dynamics practice, this new model is constructed from marine grade aluminium alloy, with the impeller, impeller ring and shafts made from stainless steel. The design and materials emphasise high performance, efficiency and durability to permit reduced operating costs for boat owners and operators.

The new model features a compact balanced reverse deflector with superior zero-speed and reverse manoeuvring performance, with the intake block positioned further aft against the transom. The intake housing is designed for good water flow to the impeller at lower boat speeds and for sprint speeds of up to approximately 35 knots, depending on hull type.

The UJ340HT can utilise UltraJet’s Hydromechanical (HM), Electrohydraulic Jog (EHJ), Electrohydraulic Proportional (EHK), JetMaster-Pro proportional (JMP) or JetMaster Joystick (JMJ) reverse and steering control systems. Standard manual hydraulic steering and optional hydraulically power assisted steering is available for single and twin installations.

With a similar hull footprint, boat builders are able to offer a standard UJ340 for most general applications and the UJ340HT as an option for heavier boats, towing, or high bollard pull applications.