HM Series Brochure
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The HamiltonJet Promise Total Waterjet Solutions HamiltonJet HM series waterjets provide highly efficient propulsion for high speed vessels operating in the world’s most demanding marine environments. Combining quality materials and manufacturing with superior research, design and product support ensures HamiltonJet HM waterjets out-perform other models in their class. With experience spanning six decades, HamiltonJet provides a totally integrated waterjet propulsion solution to the marine industry. From initial enquiry and right through the lifespan of a vessel, HamiltonJet offers a...

The Waterjet Advantage As vessel speed increases waterjets become more efficient compared to conventional propeller systems. Efficiency benefits are due to… • No appendage drag – the waterjet intake sits flush with the hull bottom without struts, propeller shafts, rudders or any elements protruding beneath the hull to increase hull resistance, particularly as speed increases. • Thrust generated by a waterjet is parallel to the direction of travel. For many propeller systems the shaft is angled down and thrust is generated in the direction of the shaft, so only a component of the total...

The HamiltonJet Difference Performance High speed performance and efficiency – advanced impeller and intake designs provide peak efficiency and performance over a wide speed range. Low speed performance – high thrust at low speeds ensures excellent station-keeping, bollard pull, load carrying and manoeuvring. Acceleration – ability to apply full power at lower speeds ensures fast acceleration for patrol boats, rescue craft, pilot boats and recreational vessels. CONTROL Steering control – HamiltonJet’s JT steering system out-performs all others, reducing thrust losses when steering to give...

HamiltonJet Features All hydraulic components are mounted inboard where they are protected from corrosion and marine growth. The integral JHPU hydraulic pump and circuits are set up and tested in the factory prior to dispatch. No need for additional pumps and plumbing to be fitted. Material Specifications Component Transition Duct 5083 Marine Grade Aluminium for Aluminium or GRP hulls Steel for Steel hulls Wear Ring EN AC 44100 Marine Grade Aluminium EN AC 44100 Marine Grade Aluminium Steering Deflector EN AC 44100 Marine Grade Aluminium Astern Deflector EN AC 44100 Marine Grade Aluminium...

Impeller race is lined with a replaceable stainless steel wear-ring to protect the housing when operating in silt-laden water. Transom seal plate bolted to transom. Split-duct ahead/astern deflector diverts water down and to each side to prevent recirculation and maximise both reverse and lateral thrust. JT steering nozzle reduces thrust losses when turning. Aluminium anodes provide extensive internal and external cathodic protection. Integral hydraulic oil cooler. Aluminium construction offers best mix of light weight, strength, corrosion resistance and cost. All internal moving and...

HM Series Dimensions The HM series comprises a range of highly efficient waterjet units suitable for propelling craft at speeds ranging from zero to up to 50 knots and typically of length between 20 and 60 metres. A G E Mainshaft Centreline IMPORTANT NOTE: Dimensions shown above are indicative only for initial design purposes. All specifications are subject to change without notice or obligation. For detailed installation data and instructions consult HamiltonJet. HM Series Total Package HM series waterjets are supplied as a completely packaged propulsion module - a design philosophy that...

HM Series Power / RPM Curves Note: The rpm ranges shown are for the impeller options which will give best cavitation performance. Please consult HamiltonJet if this range is not suitable. RPM (at Waterjet) Jet Model Max Intermittent Power (skW) Input rpm range Max Continuous Power (skW) Input rpm range NOTE: Input rpm are subject to suitable cavitation limits. The lower rpm figure is always preferred. Higher power inputs will restrict the input rpm range. Left: New pilot boats in The Netherlands each use twin HamiltonJet HM651 waterjets.

HM Series Control Systems All HM series waterjets incorporate HamiltonJet’s JT steering nozzle to optimise both steering efficiency and delivery of propulsive thrust. Compared with other waterjet steering systems, the JT nozzle provides outstanding steering response at all boat speeds. This is particularly noticeable at low speeds due to the absence of a central “deadband”. The design reduces nozzle flow disturbance, resulting in lower energy losses and minimal loss of forward thrust when steering. These factors mean higher overall efficiency through improved course-keeping and, coupled...

WORLD HEADQUARTERS HamiltonJet Global PO Box 709 Christchurch New Zealand Phone: +64 3 962 0530 Fax: +64 3 962 0534 Email: marketing@hamjet.co.nz www.hamiltonjet.co.nz REGIONAL OFFICES HamiltonJet Americas 14680 NE North Woodinville Way Suite 100 Woodinville WA 98072 United States of America Phone: +1 425 527 3000 Toll Free: 800 423 3509 Fax: +1 425 527 9188 Email: marketing@hamiltonjet.com www.hamiltonjet.com HamiltonJet Europe Unit 26, The Birches Industrial Estate East Grinstead West Sussex RH19 1XZ United Kingdom Phone: +44 1342 313 437 Fax: +44 1342 313 438 Email:...