If you see an A-class sweeping by on the downwind in speeds around 15-20 knots ...
It has been a while since I've been witness to such a situation. ever since the introduction of asymmetric spinnakers on cats we've considered spinnakerless boats on downwind legs as stationary obstructions.
But I'll promise to look the next time an A sweeps by on the downwind leg, might take a while I'm afraid as I don't go over that often ! <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />
Wouter