31
SEA TRIALS
The purpose of sea trials is to swing the compass, (CPS2 or CPS3) if it is a fluxgate
compass, and to check the general operation of the autopilot.
A) Turn the autopilot off.
Press and hold the ADJUST key and turn
the autopilot on to STANDBY.
Release the key when the display shows
'r.SEt'.
Press either the up or down ARROW key
until the display shows 'C.SEt'.
Press the ADJUST key. The display will
switch to show the current type of
compass selected (see DOCKSIDE
SETUP). This should already be correct.
Press the ADJUST key again. The
display will switch to show 'C.AdJ'.
Press the ADJUST key again. The
display will switch to display 'turn'.
Slowly turn the vessel in one complete
circle either to port or to stbd. This is best
done with either the bowthruster or by
placing one engine slow ahead and the
other slow astern.
If the vessel has one engine and no
bowthruster, slow ahead with the rudder
half-way to hard-over is best. The turn
should take more than one minute to
complete.
When the circle is complete, the autopilot
will beep and display first a North/South
correction followed by an East/West
correction.
If either correction is greater than 30, the
compass should be moved and re-swung,
or corrected manually by a qualified
compass adjuster.
If you choose to correct the compass
manually, use the following procedure:
Turn the autopilot off.
Press and hold the ADJUST key while
turning the autopilot on to STANDBY.
Release the ADJUST key when the
display shows 'r.SEt'.
Press either the up or down ARROW key
until the display shows 'C.SEt'.
CAUTION: A potentially dangerous situation can be caused by the addition or
movement of magnets in the vicinity of the compass. This can result in actual
deviations being different than those listed on the deviation card.
If the autopilot is using a magnetic compass
and fluxgate sensor combination or a self
compensating fluxgate compass (such as the
KVH Autocomp 1000), go to B.
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