This was a pirate ship cake for son's 6th birthday. Had problems with the fondant, too crumbly, so added glycerine and more marshmallows and then kneaded in more conf. sugar and it seemed to work out. The silly mistake was to use white icing underneath which is showing through in parts. I reinforced the wood along the top (rails) with spagetti noodles, I'll make sure the kids don't get those pieces when they eat it. The water was gelatine, and some hard candy too.