If you really want to dig into this-

http://www.boatdesign.net/forums/sailboats/wave-piercing-pitching-damping-marketing-18037.html

Bows with volume at the water line and finer at the top recover easier from submersion as the drag is lower as it rises vs. diving. Stick a conventional bow in that is wider at top, drag goes up faster, the bow slows down vs. the rig and over you go. The Bimare Javelin 2, 18Ht hulls are plumb, but have this configuration, volume low and skinny at the top. The N20 has tall bows for extra volume but are quite fine- different approach.

18HT


Ben Hall on his winged A cat-


bow shot of HT