Drive type drive out prop. gain seastate rudder, Advanced settings – Simrad AUTOPILOT SYSTEM AP50 User Manual
Page 153

Advanced Settings
20221032B
151
Drive type 
This indicates the type of drive installed. The display will show 
“Motor”, “Solenoid”, “Proportional” or “Analog”, respectively. 
The reading is obtained from the Automatic rudder test under 
the Dockside menu. The set value may be changed here. 
Drive out 
Not applicable for “Analog” drives. 
Shows the amount of power needed to achieve the correct 
rudder speed. The reading is obtained from the Automatic 
rudder test under the Dockside menu. The set value may be 
increased or decreased here. 
Prop. gain 
Applicable only for “Proportional” drive. 
This parameter is set automatically when the Rudder Test is 
done in the Dockside menu. It influences the start/stop slope of 
the rudder. The value could be increased if rudder response to a 
start/stop command feels too slow. The value could be 
decreased if start/stop feels too quick and causes rudder angle 
overshoot when stopping. 
Range: 1-25 
Default: 18, updated during Rudder Test. 
Seastate
SETTINGS
Seastate
AUTO
Rudder
0.50
Count rudder
1.40
W Seastate
AUTO
W Rudder
0.50
W Count Rudder
1.40
W Rudder limit
10°
Cruising speed
15kt
Speed response 0.00
Transition speed OFF
Seastate determines the number of degrees the vessel may fall 
off the set course before any response is given to the rudder. 
OFF: 
Provides precise steering but increases rudder 
activity. 
AUTO:
Automatically reduces the rudder activity and 
sensitivity of the autopilot in rough weather. 
MANUAL: Sets yaw band manually (MAN 1-MAN 10, 10
≈
±6°).
Default:
AUTO
Rudder 
Rudder sets the rudder gain, which is the ratio between the 
commanded angle and the heading error. Default value depends 
on boat length. 
Range: 0.05 to 4.00. 
