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Riva 90 ARGO - Page 355

Riva 90 ARGO
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12 - INFORMATION FOR USE349
The yacht is equipped with very powerful engines, with very efcient rudders
and with high-performing bow/stern thrusters.
The bow/stern thrusters are to be used at very low speed, or without fresh
way; at higher speed, it is possible to obtain a more correct reaction, by us-
ing the engines throttles in an off-set way.
The ability to exploit these excellent qualities depends mainly on the “fa-
miliarity” the Captain has with his yacht. Practice is the only way to acquire
condence, and nally you will be able to safely perform mooring and un-
mooring manoeuvres even in very difcult or crowded areas.
A basic rule, that should always be applied, is to manoeuvre at low speed,
so as to have enough time to react and to better evaluate the situation; in
this way, in case of accidental contact with other yachts, you will not cause
any serious damage.
Before unmooring check the following:
That there are no other yachts manoeuvring nearby
That the mooring ropes are not damaged
That the fenders are positioned and well fastened (in case of wind or surf
prepare a passenger with fender to avoid damages)
That there are no oating objects or loose ropes which can damage the
propeller.
If the yacht is moored with the stern to the shore:
Undo the stern lines, haul in the chain, until distant from the shore, and
head to the exit.
If the mooring is on the side:
Ease away the mooring rope from stern, warp on bow rope to move
away the stern from the shore, manoeuvre for way out.
12.9.1 Leaving the mooring
The yacht is steered by means of the steering wheel that moves the rudders
(rudder operation is independent from the engine operation).
In case of need and/or when in conned waters, manoeuvre the yacht by
using the engines (changing the rpm and reversing the engine direction of
rotation).
It is a good rule not to leave the steering wheel, particularly when cruising at
high speed or in conned waters.
Do not exceed the speed limits when operating in conned waters, harbours
and wherever required.
Keep in mind that the rudders effect is proportional to the propellers rpm and
to the yacht fresh way, especially with headway; as a result of a high rpm
and a high speed, the rudder efciency is high, while when the engines are
idling, with low fresh way, the reaction of the tiller angle is almost negligible.
WARNING
Before unmooring disconnect the electric cables for shore electric power
supply.
CAUTION
It is the Owner’s/the operators’ responsibility to make sure that the moor-
ing ropes, the towing ropes, the anchor chain(s), the anchor lines and the
anchor(s) are suitable for the intended use of the yacht, i.e. the resistance
of the ropes or chains must not exceed 80% of the resistance to breaking
of the relevant strength point.

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