Control - discuss,
While a sail servo is basically a beefed up version of a standard servo, and used for rotating an arm with the ends of the tethers fixed at each end, they usually have longer radii to rotate in, 70° i believe instead of the more common 45° about each centre, although well and good, they are also confined to the inside dimensions of the boat and the boat being 80mm wide that means i would be as well using a standard servo.
Sail winch, again about the size of a standard servo or can be smaller, weight as much (49g is the lightest i have seen for a standard sized unit), essentially a rotating pulley which rotates anything from 1.5 times to 8 times, which the tethers are wrapped around, unusual configeration is to have the tethers connected to the sail and taught to keep the tension on, or one end fixed to the pulley and it winds on the tether, the more accepted route is to have the tethers connected to a continous loop of thread that wraps around the pulley on the servo and the other around a pulley at the other end of the boat under spring tension so that it doesn't slip off, if slippage does occur, then the continous loop accounts for this as the distance it loops at is that of the pull required or there abouts.
Now this is not a big boat - its actually quite small at 80mm wide and 320mm long internally, access is extremelly small and if the thread breaks, unless your hands are about the size of a three year olds then there is no chance of tieing thread to a servo arm or wrapping the thread back around a pulley, so we go back to the solid linkage found in other attempts, rotating masts is an option at this early stage, but being refered to a girl, lol, means i need to discount this option, plus i want to make it as detailed as possible with the parts from the kit, i have an idea, it will require an experiment to see if the plan is feasable, but essentially, the idea is to have the inside bit so that access would not be required if a thread linkage breaks (a solid linkage breaking is a different kettle of fish).
One idea being toyed with, was to have the two decks removable, first the hull gets narrower as you move up the hull, though maybe enough to squeeze the lower deck past as an assemblyto the underside of the main deck, couple of other thoughts, how to seal sufficiently enough to allow water to enter the lower gun ports and not enter the hull or any other area as screwing down the deck would require the screws to pass through the top deck then through the bottom deck, unsightly as well, then there is the shrouds, these fit to the side of the hull, their platforms would need to be screwed to the hull, again unsightly, even painted black, they could be utilised to hold down the bottom deck if the holes and mating fixings on the decks matched up, eliminating deck screws, but, you see the problem.