All the larger auto pilots are made up of components that work together. If the Course computer has the logic for a sail boat then there is no reason it can't be highly effective when paired with the correct size hydraulics. It's the software
that differentiates power from sail not the type of unit. Power boats have more options and variations than sail boats do.
The hydraulics are just a dumb servo unit that takes instructions direct from the course computer and the rudder
indicator reports back with the effective change. The hydraulic unit could be big or small, but the rate at which it responds is going to be a problem if the unit is too small. Less power with longer response times will make a sluggish response in heavy weather
Usually it is the other way around when selecting a pilot. With larger engines the newer systems add a rate gyro to help when the boat is moving quickly such as with Express Cruisers. A rate gyro under sail is of very limited value. The cost of them now is low enough that you see them on small power boats too. The other issue is the steering
system. Sail boats don't usually have remote
like power boats can have because the distances don't require them. The power boats have all the odd ball situations that may require changes for the best fit.
If you just read through the course computer manual you should see the type of settings you want for sail operation. If you want tighter integration with the rest of the instrumentation then of course those features can add more value - at a price
With below decks systems the installation
matters a great deal. In spite of anything else they all are custom installations. Getting the precise fit with the hydraulic unit and making strong attachments takes experience to do well. On a boat as large as yours the forces are very high and durability comes with the good install if you expect to last 15 or more years.
Many system can feed into the wind
instrumentation and GPS
to navigate with more parameters while under sail. The key to any design is in the course computer. I've found our older Simrad
had a more automatic ability than does our current Raymarine
. Most all the computers
do have some degree of adaptive logic. The computer monitors the actual course against the desired course. It tries to compute how much extra rudder
may be required vs just a change in direction because you altered the course. It adds and subtracts until it finds the best fit over time. It can take a minute or two to calculate that best rudder solution.