Cool Bow Wave

My friend Esteban sails in Chicago. He took this hanging over he bow from the boat he races on: Here is what he has to say about it:

This is the boat I sail on weekends, Afternoon Delight, a '78 C&C 34, out of Columbia Yacht Club in Chicago. The skipper is Rich Becker. The photo was taken on Sept 6. We're actually not under sail here. The wind was super wacky that day, 10 kts then dead, on and off all day. We wound up motoring in at day's end. Still, the wave is cool.