Hamilton Jet HJ212, Installation And Service Manual, Page: 157 / 198

Installation and Service Manual
Appendix
Manual control of steering nozzle and reverse duct
In the unlikely event of a helm wheel, or cable failure, a degree of control over the vessel will be possible by
manually moving the steering tiller.

Disconnect the cable from the steering shaft tiller.

Move the tiller by hand as required to move the steering nozzle.
In the unlikely event of a reverse mechanism, or cable failure, a degree of control over the vessel will be
possible by manually raising the reverse duct.

Disconnect the reverse duct from the reverse actuating mechanism.

Attach a rope to the reverse duct.

Take the weight of the reverse duct.

Lift the reverse duct and tie off the rope so that the reverse duct is raised out of the jet stream.

This will allow enough vessel control to return to base to have the fault rectified.
The reverse duct can only be engaged by hand at low rpm’s (less than 2000rpm). Higher
rpm’s can be applied once the duct is engaged.
Manoeuvring and Docking
Low speed manoeuvring and docking
Manoeuvre the vessel as follows:

Move the reverse control lever to the "zero speed" position.

Set the throttle to 1/3 open - approximately 1,000rpm (in strong tide or wind, increase the throttle
opening to obtain greater response as required to suit the conditions).

A slight movement either way from the "zero speed" position will be sufficient to move the vessel ahead
or astern until the manoeuvre is complete.

Steering will be very responsive at this throttle opening. Full steering control is available at all
ahead/astern control lever positions and there is no change of steering "sense" at any time.

Manoeuvre at a fixed throttle setting, working the steering with one hand and the ahead/astern control
lever with the other hand.

Do not work the throttles - leave as set. With twin jets, manoeuvring is best carried out
using the helm with one hand and both reverse levers with the other hand.

Use only low engine RPM - high RPM will give faster response but makes control more
difficult.

If the bow is rotating to starboard, port lock must be used to stop the rotation (or vice
versa) then the helm is centred to hold the heading.

If the vessel is moving ahead then the reverse lever(s) must be moved astern to bring the
vessel to rest (or vice versa) and then zero speed selected to hold the heading.
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