TMQ AP9 Autopilot (V6.0 - 965) Page 39 of 51 31/1/2017
NOTE: AT NO STAGE SHOULD THE AUTOPILOT DRIVE THE RUDDER
INTO THE MECHANICAL STOPS. IF THIS IS ALLOWED TO HAPPEN,
DAMAGE TO THE AUTOPILOT OR DRIVE UNIT MAY RESULT
14. Select STANDBY.
Check Rudder Drive Speed
The speed a rudder is moved by the autopilot drive unit will affect the steering
responsiveness of the AP9. A rudder lock to lock time of approximately 15 seconds* is
required for good course holding.
*Note: Optimum rudder speed will vary between vessels. A larger ship or slower boat may
require a slower speed. Rudder lock to lock angle is from 30º port to 30º starboard.
1. AP9 in STANDBY
2. RUDDER LIMIT fully clockwise
3. Select POWER STEER
4. Use a suitable timing device to check rudder speed
5. Rotate control knob until rudder is fully to port
6. Quickly rotate the control knob in starboard direction for a minimum of 3
turns. Time the rudder until it reaches starboard limit. Note the time.
The autopilot is now ready for full operational testing and sea trial.
Sea Trials
Compass Checks
· Sail the boat to an area of calm and open water
· Switch AP9 on
· Check AP9 is in STANDBY
· Check compass headings against boat compass
· Carry out compass calibration if necessary – see page 55
Note: It is rare for the AP9 heading and boat compass to agree exactly on every
heading due to magnetic variations on the boat.
Basic Trials
Before commencing the basic trial set the manual controls in the following
positions:
1. RATE OF TURN – 10
2. WEATHER – 8
3. TRIM – centre position
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