Autopilot AP3003 gold Navicontrol
Instruction manual for use and installation -
rel. 1.21 / 02.08
page 11
The display of the Control Unit visualizes the number of the program which is
operating at that time.
YAW
In some other autopilots, it is also named SEA or WEATHER and indicates the
width of the channel in which the vessel navigates. The higher the value is and
the higher the slack is respect to the course to be followed. The lower the
value is and the more precise is the course.
RUDD
It is the main parameter and corresponds to the gain of the vessel. This value
is higher in which need a great deal of rudder quantity and vice-versa.
If the set value is higher respect to the optimum condition, the maintaining of
the course will be instable (the vessel corrects continuously by “snaking”
around the selected course).
If the set value is lower, the vessel cannot enter the selected course in
reasonable time.
Normally, the RUDD value must be increased at low speed and decreased at
high speed. In order to set the right value, put the autopilot in AUTO and look
at the followings:
C.RUDD
It is the parameter which corresponds to the counter-rudder. The counter-
rudder is the function which compensates the inertia effect of the vessel:
usually the higher inertia the vessel has and the higher this value must be.
Normally this parameter is close to 0 in small vessels.
In order to set the right value, put the autopilot in AUTO, make a course
change and look at the followings:
RUDD
too low
RUDD
too high
