I think you might be talking about the Taipan 5.7. This is an awesome boat - way ahead of its time. Unfortunatly for a number of reasons it doesn't comply with F18 class rules.
Michael
No Jimi is right - there was a Taipan F18, which was a modified 5.7. There are still some pictures of them on the F18 site. I think that the fact that the new Capricorn is faster than the 5.7 while being a 100 pounds heavier shows how innovative the design is. Imagine what a 275 pound Capricorn could do. BTW, are there Capricorns in the US yet? Attached is a picture of the Texel winning Taipan F18
I believe that those boats were illegal because the daggerboards were canted. According to Greg (the guy who designed/built them) by the time all the mods were made that would make them legal, the Capricorn was a much better concept.
I don't know if there are any Capricorns in the US yet but they are gaining popularity down here. I have sailed on them a few times and they are definatly a nice boat.
Michael