Equipment Description - Hamilton Jet HJ212 Installation And Service Manual

Product Description
Installation and Service Manual
Figure 1: Hamilton Quinnant Jet, Circa 1953
Today we have over 30,000 units in service world wide.
With a complete range of models suitable for power inputs of up to 10000kW per unit. Hamilton waterjets
are ideally suited to the efficient propulsion of a wide variety of high speed vessels, in either single or
multiple jet configurations.
Hamilton Jet is dedicated to the production of the highest quality waterjets and controls systems designed
and manufactured to meet the requirements of the worlds leading certifying authorities.
Full support for projects is provided by the global Hamilton Jet organisation through factory support staff,
regional offices and an extensive network of factory trained distributors in over 50 locations worldwide.

Equipment Description

The Hamilton HJ series is a range of highly efficient single stage waterjets suitable for propelling craft
typically up to 20meters in length and 30tonnes displacement, at speeds up to 50knots. HJ Series waterjets
are generally directly driven by high speed diesel engines.
The Hamilton HM & HT series are larger single stage waterjets suitable for vessels typically up to 65m in
length and are generally driven by high speed diesel engines via a reduction gearbox.
Mounted partly inboard at the stern of the vessel, the Hamilton waterjet consists of a totally integrated, jet
mounted hydraulic steering, reverse and control system package.
Water is drawn into the waterjet through an intake screen at the base of the intake, which is mounted flush
with the hull bottom. The pumping unit (impeller + stator) increases the pressure or "head" of the flow,
which is then discharged at high velocity at the nozzle. The reaction to this high velocity jet stream provides
the net thrust force, which is fully transmitted through the intake to the hull bottom.
A single piece balanced steering nozzle precisely directs the jet stream as commanded by the helm, providing
high turning forces to either port or starboard. An independent split-duct type reverse deflector, directs the
jet stream back underneath the hull to provide powerful astern thrust.
The reverse duct can be set to a "zero speed" position (where the ahead and astern thrusts are balanced) at
which point full steering is still available.
Infinitely variable forward and reverse thrust may be selected by varying the position of the reverse duct and
combined with the highly efficient steering, results in unparalleled vessel control and manoeuvrability.
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