Jack - any feedback on the S1? I'm looking at it for my 32.
I am sorry it took so long to get back, but I have now done some serious testing of my Raymarine S1. Overall I am very impressed by the performance.
The real acid test was when I was broad reaching under a double reefed main and a 10 sq ft of jib rolled out, wind was 30kn sustained gusting to 36, waweheight 15ft (don't ask why I was out there under those conditions
) Of course a broach would have been disastreous, so I was sitting next to the wheel ready to take over should the AP lose it. That turned out to be unnecessary, as the AP responded quickly enough to prevent the boat from broaching. Of course it did weave 20 degrees to either side of the set course, but any human helmsman would have done the same under those conditions, and on "average" it kept the desired course.
The only conditions I have seen sofar where the AP was unable to keep course, was when the boat was moving slowly in very light and fluky winds, conditions where it takes a lot of rudder to correct course deviations. The AP simply didn't use enough rudder to correct.
There are a number of parameters that needs to be set during seatrials/setup. It is important to set these correctly, and it toook me half a day of experimenting before I got it right. It is possible that further adjustment can improve the slow speed/light wind performance, but then again I don't know if it is possible to find a setting where both light wind and heavy weather performance is good. Should I wish for an improvement from Raymarine, It would be a simple software change that would allow me to predefine and store a number of settings that could be recalled by the touch of a button. That way I could have one setting for heavy weather, one for light winds, one for motoring etc.