... Abought the servos, I have been staring at the model with the deck off for hours at a time the past couple of days and know what I want to do but not the specifics like where the fairleads should come up trough the deck to line up with the pin rails and how to make a 3 inch arm for the rudder servo and how long the arms for the fore sail/jib sheets should be. I guess its safe to say that many more hours of staring at the model are needed.
Lextin
With regard to the winching, I may be able to head you down the right path....
You may find it of value to work backwards from the sails and the booms / yards.
Let's consider just a single fore and aft sail such as the mainsail... (as shown in your picture "recent full profile")
First step would be to work out the angle you want the booms to move through from sheeted out to close hauled.
Next step would be to nominate a sheeting point and determine how far this is from the mast. You would also need to take into consideration the deck layout so you do not finish up with a fairlead in the middle of a hatch or such.
With the angle and the distance from the mast, you can now determine how much sheet travel you need.
Once you know the sheet travel, you can then work out the winching method. You will also need to have a servo with sufficient torque to handle the load.
You mention a sail winch servo with a three inch arm - this may be a problem below decks just to find room to swing it. It may also require a pretty strong servo. To reduce arm length, you may be able to use double haul - this would give twice the travel but half the torque.
One alternative may be a drum winch - while these are slower, they can transport far more line.
Here is a cheap example of a 6 turn winch that would give you about 250 mm of sheet travel:
http://www.hobbyking.com/hobbyking/store/__20855___SW4805_6PA_Sailwinch_Servo_6_13kg_45g_0_70.htmlI notice in the sketch that there are also square sails and foresails. I would suggest you will likely need separate winches for the square sails and the fore-and-aft sails. I assume you would use braces to the yards of the square sails to swing them (with the braces running up the after mast first). Another way some have used was to fix the braces to the mast and rotate the entire mast, but this is not my preferred option. The foresails could perhaps be self tacking and may not need a winch, although they have a lot of effect on manoeuvrability as they are so far forward from the centre of the boat.
A vessel such as this is probably steered more by sails than by the rudder (even a very over-scale rudder) so getting good control of the sails remotely will help with manoeuvrability on the water.
While it may not seem immediately relevant to what you are building, you may find some inspiration regarding your winching from these videos of my "Recycle Challenge" square rigger, "Jive". It is approximately the same size as "Byzantium" and uses 3 standard servo double haul winches - one for the square sails on the foremast (and also the flying jibs), a second winch for the square sails on the main and mizzen masts, and a third winch for the spanker...
http://www.youtube.com/watch?v=zZGjFR5CYUEhttp://www.youtube.com/watch?v=sTj-aqYUX9ghttp://www.youtube.com/watch?v=7En4_8V24Xs