9 - STEERING SYSTEMS 284
9.3 STABILIZING FINS SYSTEM AND MANOEUVRING
THRUSTERS
9.3.1 Stabilizingns
The ns are wing proles in all respects and take advantage of the speed
of water they encounter to create lift on the upper or lower surface, de-
pending on how the ns are rotated with respect to their axis.
Therefore, according to what is imposed to them by the logic of control,
they, through actuators, move in such a way as to give an immediate re-
sponse to the action of roll.
The higher the speed of the hull, the greater the bearing capacity that the
ns can create and that, when the ship is stationary, they have practically
no inuence. The control system includes an electronic control unit.
On leaving the port, all you need to do is activate the system, which in-
dependently manages the trim of the yacht in a continuous and efcient
manner, thanks to the stabilizing ns mounted under the hull.
The system adapts its interventions according to speed, sea state and
wave direction, as well as heeling data from the sensors, of course.
The stabilizing ns of the system are equipped with very robust electrome-
chanical mechanisms, capable of ensuring an effective duration in time.
As for the control unit, it is equipped with a liquid crystal screen on which
you can read all the data collected by the sensors, the status of the ns
and the system, as well as any alarms needing intervention.
On this yacht there is also the Zero Speed system that allows the operation
of the stabilizing ns even with the engines off.
For further information, consult the manual supplied by the Manufacturer.
DANGER
Stabilizing ns in zero speed mode should not be activated with people
swimming around the yacht.
CAUTION
The power supply of the outrigger panel must always be maintained on
the main electrical panel; moreover, if the stabilizer n system is not used,
the ns must always be kept in the centre (see display on the helm sta-
tion).
9.3.2 Manoeuvring thrusters
The thruster is a very simple and robust accessory, but requires some at-
tention:
The drive thruster should be used at very low speed, or without rudder; at
higher speed, more correct reactions are obtained with the staggered use
of the inverters;
Whenever there is a chance to lift the yacht, check the condition of each
thruster, the protective anode and the fastening system.
MAINTENANCE
At least once a week check that it is working properly.
At least once every 3 months check the condition of the protective sacri-
cial anodes plates and replace if necessary.
Add oil when necessary.
For further information please refer to the Manufacturer’s manual.
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