Control Characteristics; Driving At High Speeds - buster LX 2011 Handbuch

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Fiskars Boats, Inha Works Ltd 2010
5.9

Control characteristics

5.9.1

Driving at high speeds

The recommended maximum engine output for the boat is 45 kW (60 hp).
Do not use a boat with an engine that has a greater output than that which is
indicated on the manufacturer's plate.
The engines feature electro-hydraulic power trim. The basic rules for adjusting the
engine's power trim are:
x When raising the boat to plane, go to the 'bow down' position.
x When the boat is planing, and in a moderate swell, raise the bow until the boat
begins to buck, and the propeller loses its grip (ventilates) or the engine
approaches the upper limit of the normal area of adjustment. Thereafter, lower
the prow slightly until the boat stabilises. The power trim can be optimised with
the aid of the log.
x In a counter swell, lower the bow for a smoother ride. In a favourable swell,
and in a very high counter swell, raise the bow slightly so that it does not dive
(submerge).
x Do not drive the boat at high speed when the engine power trim is at a
negative angle – i.e. with the bow low – as the boat may heel and the steering
become unstable.
x You should be careful when driving at a high speed in a sideways swell as the
waves can put the boat into a pendulum-like motion.
x When the boat dives into a wave in a favourable swell, it may turn suddenly or
the prow may dive into the wave. Reduce speed in a rising swell.
Also see the instruction manual for the engine.
The outboard engine is normally intended to be installed at a height where the
engine's cavitation plate is at the same elevation as the keel of the boat.
WARNING!
WARNING!
WARNING!
Learn the rules of navigation, from books and courses, and follow them. In addition,
observe the requirements of COLREG (Convention on the International Regulations
for Preventing Collisions at Sea). Navigate carefully and use new or updated sea
At high speeds, adjust the power trim with care, as it
radically changes the behaviour of the boat. Do not drive
with the bow too low as the boat can suddenly deviate from
its path.
Rapid turns can lead to loss of control. Reduce speed before
sharp turns in whatever direction you are going.
Waves reduce the boat's controllability, causing it to heel;
and very large waves represent a serious risk of the boat
capsizing and being filled with water. Bear this in mind and
reduce speed in a rising swell.
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