I don't like the term "wave-piercing" in reference to sailing cats. They are just narrow enough to not be as influenced by waves as other boats.

HSV 2 is a wave piercer in the true sense of the word. There's a couple of meters of bow that are actually under the water and the top of the bow bulb is sharp. Having said that, the original wave piercing ferry that ran across Bass Strait was not known for the forgiving seakeeping in bad conditions and was often called the vomit comet.