-35-
PRO
PILOT
725 INSTALLATION & SERVICING MANUAL
Sea
Trials
Ensure
that
the
transit
screw
in
the
base
of
the
compass
sensor
has
been
removed,
shortened
or
replaced
if
it
has
been
exposed
to
the
elements
and
check
that
the
compass
heading
agrees
with
the
ship’s
heading.
Finally
check
that
the
‘OFF’
and
‘STANDBY’
keys
of
any
additional
Control
Unit’s
function
correctly.
Sea
trials
can
now
be
carried
out
to
set
the
compass
deviation
corrections
and
to
determine
the
best
settings
for
optimum
autopilot
performance.
Checks at Sea
It is dangerous to carry out these trials in restricted or
busy waters.
Calm
sea
conditions
are
required
to
carry
out
the
Automatic
Deviation
Correction
procedure,
average
sea
conditions
are
preferable
for
the
rest
of
the
sea
trials.
The following order is recommended for carrying out the Sea
Trials.
Carry out the Automatic Deviation Correction routine.
Check that the selected Configuration settings give the best
performance for the vessel in this order:-
a.
Rudder adjustments.
b.
Counter rudder.
After carrying out this adjustment, check the steering
characteristics and adjust the Rudder and Response as
required.
c
.
Trim adjustment. If conditions allow.
d.
Compass Damping.
Set the Navigator Gain if a navigator is fitted (see Installation
Settings
earlier).
Set the Wind Trim Gain if a windvane is fitted (see Installation
Settings
earlier).
WARNING
Changed values are not automatically stored until the
autopilot is turned off by the OFF key. Therefore
switch the autopilot off as soon as it is practical and
safe to do so.
