RE: Northstar AP-380 autopilot
I have had a Navman/Northstar G-Pilot autopilot on my motorsailor for years, and it has performed very well in all seas. I have coupled it to a powerful B&G electric drive on the rotary steering tube on CARIAD and it has worked very well. The inertial sensor helps the AP steer with following seas as long as you have a powerful and fast acting drive.
I noticed that you bought two control heads. I am looking to acquire another control head. Do you know if the vendor that you purchased your system from has more or would you be willing to sell me one of yours?