This may be a bit late, but I'm building Artitec's Staatenjacht Utrecht, and its an incredible model. I'm not really into eighteenth century yachts, but the level of quality I saw in Artitec's Texel diorama was so sensational I really wanted to build one of their kits. An image of the yacht can be seen here:
http://nsinmodel.com/4schepen/artitec/118.jpg
The challenges of resin are all there, but with normal care it performs as readily as styrene or any other material. The castings must be carefully cut from their molds, with normal cleanup. The hull itself is a single peice solid resin casting, with the finest detail I have ever seen, not only on the exterior but also interior hull sides. The carved sculptures - allegories of Neptune bestowing the bounties of the sea upon Utrecht - are magnificent. Artitec also provides duplicate castings of particularly fragile parts, like the upper head rails, which is very good to have.
Etched brass is provided for the metal fittings, such as the lantern bracket, pins, chains, and so on, while the lantern is cast in clear resin. The windows are clear plastic with the fenestration printed on them. Sails are provided on a paper sheet, with a separate tissue sheet for anyone wishing to use that. I wonder if the sails can be tinted with appropriate tones of sail-like color, scanned and then printed onto the tissue. All of this allows an extremely fine level of detail which is necessary in a 1:87 scale kit.
There are only two challenges worth noting. First, the instructions are in Dutch, but have clear and readily understandable illustrations. More significantly, bearing in mind Professor Tilley's thoughts, the masts are resin. The quality of the resin is fine and may resist sagging, but it may also be a good idea to substitute wooden masts as a precaution. Fortunately the mast construction is very simple and easily accomplished.
A full size replica of the 1746 yacht has been built in Utrecht, and I've found this to be very helpful for information about various details. I think Artitec's model was released in conjunction with the construction of the replica. Information about the replica can be found here:
http://www.statenjacht.nl/links/overig.htm
The yacht is no longer listed on Artitec's website, but I found a few distributers that still have them. Now if only I could get one of the Texel ships . . . .