16
With the drive in the ”Trim range”
WARNING! The drive should not be trimmed
violently when running at high speed. If the
bow is lowered at high speed the boat’s ability
to hold a course may become unstable. To a
great extent this is dependant on the shape of
the hull and will vary from boat to boat. Howe-
ver, even if safety is not compromised the re-
sult may be an unpleasant experience for dri-
ver and passengers, who may lose confidence
in the boat’s handling.
When starting
Trim the drive. The bow will be pressed down and
the boat accelerates faster. This gives improved
running and steering characteristics at speeds be-
low the planing threshold.
At planing speed
Trim the drive out to the running position which
feels comfortable and the boat feels stable and
smooth.
For maximum fuel economy
Run boat at a constant throttle opening. Trim the
drive out/in a little. The boat is most easily propel-
led and speed will increase in the position that gives
the highest engine speed. The throttle opening can
then be slightly reduced to retain the original speed.
In choppy seas or running against a
heavy sea
Trim drive so the bows drop. This will provide more
comfortable running.
WARNING! High speed running in a heavy sea
is dangerous. High speed running in a heavy
sea requires the driver’s maximum attention
and a boat of the right size and design for this
type of running.
Side winds
If the boat has a dual installation the drives can be
trimmed at different trim angles. This compensates
for side winds or uneven transverse load distribution
(athwartships), which makes the boat list during run-
ning.
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