Just finished "The Last Voyage" and in it the author has built his own schoonar called the Third Sea and it is built out of Ferro-cement.
He used this boat to cruise the south seas. This is a fine looking boat and it almost seems to make sense to build out of cement when cruising these regions. Now don't get me wrong I still love wood, but whatcha think about a cement boat? Those areas of the world seem like they would be rough on a wooden hulled vessal, with worms and jagged corral reefs.