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I'm calibrating because last season the AP reading varied from a compass reading by as much as ten degrees on some headings. When I calibrated it then, I got a deviation of greater than 15 degrees. Over the winter I realized I had put my tool box about three feet from the fluxgate compass. I...

I didn't get a "TOO FAST" message. As I kept turning the "SWING ON" continued to display. The calibration didn't complete after three circles. The heading did increment continually. I can't say how smoothly it advanced because a slight wind made the boat not turn smoothly and drift; the boat...

Today I attempted to follow the calibration procedure for my Raymarine ST8002 autopilot. I entered the SEATRIAL CAL and turned the boat in circles slowly as instructed. I turned the boat in circles three times, but the autopilot did not complete its calibration. I tried twice more, turning three...

I have a short in the wiring to the anchor light on my 2005 Mainship 400. If I turn on the nav lights, they work fine. If I try to switch on the anchor light, the circuit breaker blows immediately. Removing the anchor light bulb does not change the behavior. I've tried unsuccessfully to...

The window latch on one of my windows on my 2005 Mainship 400 has broken off. Does anyone know where I can get a replacement? Has anyone done a work-around if they haven't been able to get a replacement, and if so, what did you do?

I have a 2005 MS 400T with an isolation transformer. I just read on the Mainship Yahoo group forum that the isolation transformer was installed to send a current when first connected to shore power to test for a ground fault. The problem is that this test current is enough to trip the newer GFCI...