The cat is a Sirena SL16 designed by Yves Loday. It is built by White Formula, who also build the Spitfire designed by Yves and Reg White. It will be the Youth cat for, at least, the next 3 years. There are 30 hulls at the Worlds http://www.facebook.com/album.php?aid=236678&id=52997197316&ref=mf#!/photo.php?pid=6391251&id=52997197316&fbid=447282827316 It feels a lot more like a Spitfire than a Hobie 16, tacks quickly, lots of buoyancy in the bows downwind. You do need to keep tension on the mainsheet down-wind. Maybe the spinnaker sheet was a bit long on the one I sailed, but we caught it around a bow twice - keep it tidy. Hope everyone has a great Worlds. See you in Ireland in 2012.