How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Russell H. Your Own Question
Russell H.
Russell H., Service Tech
Category: Marine Electronics
Satisfied Customers: 9526
Experience:  8+ years of professional experience
13568747
Type Your Marine Electronics Question Here...
Russell H. is online now
A new question is answered every 9 seconds

Ap24 will not track a straight line, constant s ing 20 deg

Customer Question

Ap24 will not track a straight line, constant s ing 20 deg variation
Submitted: 5 months ago.
Category: Marine Electronics
Expert:  Russell H. replied 5 months ago.

Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.

Does the variation occur in the actual heading of the vessel, rather than on the instrument first and foremost?

You may have either a problem in the gear that the piloting device drives, such as extreme looseness in the steering gear, or you might have a problem with the motor that the pilot device drives, that in turn drives the steering gear.

(Or, rarely, you might have a problem with the autocompass that tells the pilot what your actual heading/bearing is. Check on it too, see whether its indications match with the yawing of the vessel, or whether they precede it... if they precede it, then the autocompass is defective somehow. But this is rare, I think.)

Another thing to check: see whether when on manual steering, your heading/bearing is steadier, for several hundred feet of sailing. If it is steady, then the compass/gear/motor/pilot is OK, except for the autopilot functions perhaps!

Related Marine Electronics Questions