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HJ364 replaced the HJ362 in June of 2005 |
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General Description The 364 waterjet is normally directly driven by a high speed marine diesel and can be used in planing and displacement craft or in a dual speed role as both loiter and high speed boost propulsion. With it's computer aided impeller designs the 364 waterjet provides high propulsive efficiencies, at least equivalent to the best propeller systems at planing speeds of 25+ knots. Any number of jets can be employed without loss of propulsive efficiency. The waterjet mounts inboard at the stern, drawing water through an intake fixed to the hull bottom. The intake is protected by a highly developed screen which, at planing speeds, is largely self cleaning. An intake screen rake is optional. The pumping unit carries through the transom, where it is sealed with a rubber 'O'-ring seal, and discharges water directly aft through the outlet nozzle. The reaction of the water being thrust rearwards generates a powerful forward thrust which is fully transmitted through the intake base to the hull (no thrust is transmitted to the engine via the driveshaft). Steering A steerable nozzle deflects the water to port and starboard, giving powerful steering. Steering is actuated via an inboard mounted tiller. Preferred control is by a manual hydraulic system. Reverse A split duct thrust reversing deflector is mounted aft of the steering nozzle, providing an infinite range of ahead, zero-speed, or astern manoeuvring. The HFRC system comes complete with jet unit mounted and driven hydraulic powerpack (JHPU) and oil cooler integral with the jet intake, eliminating the need for an external cooling supply. Full steerage is always available regardless of reversing duct position i.e. regardless of of speed or direction. By working reverse and steering in unison a resultant thrust can be obtained in any direction giving 360 degrees manoeuvring. Designed and manufactured in corrosion resistant materials to international standards, 362 waterjets are further protected by fitting of sacrificial anodes. The units are supplied factory tested as a complete package including integral steering and reverse control systems. Installation is simplified as an aluminium intake base is supplied with each jet. This is fixed in the hull to form the correct jet inlet shape and provide a mounting for the builder to fit the jet. The intake block welds into an aluminium hull or is moulded into GRP or wooden hulls. The GRP version eliminates the need for boat builders to mould a thick GRP block, saving both time and money. A gearbox is not necessary as the waterjet matches a large range of common marine engines directly driven off the engine's flywheel. The engine should be left hand rotation (anti-clockwise when looking on the engine flywheel). Extensively tested in both HamiltonJet's Hydrodynamic Test Facility and operational vessels, the 362 waterjet is an ideal propulsion unit for high speed work, patrol boats, and pleasure craft where operators require proven performance and reliability. |
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364 |
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| Please note that dimensions above are indicative only - refer to 364 designer's manual for complete technical data. Due to HamiltonJet's policy of continuous development, all specifications are subject to change without notice or obligation. |
| While Hamilton Jet provides typical data for each of its jets, however they are subject to change without notice and are provided for comparison purposes only. Hamilton Jet is very interested in the success of your installation as is Jastram Technologies. For this reason anyone considering a jet purchase is encouraged to contact Jastram in the earliest planning stages to provide boat hull and engine information so Hamilton Jet can advise the best matches for impellor to engine, and jet to boat in your application and provide preliminary performance estimates. |
