I had an error in the wave approach velocity.  Slight error when going to windward but larger error when broad reaching and running.

I have done all the 6m/s windspeed again and added in one for 170 degrees.  It is particularly interesting because the wave is overtaking the hull so the stern rises before the bow rises and falls before the bow falls.  This is the wallowing situation where the mast flogs if the bearings have clearance.  In this case the deck midship is just going under while the aft deck and foredeck have ample freeboard.  This is a situation where the deck clearance on the windward side is important because there is no heeling moment.  There is no reason to sail like this because the VMG will be slower than reaching downwind. 

These are the higher speed conditions as before but with the addition of one at 100 degrees and 12m/s wind.  Although the hull speed is not achieving windspeed, it is able to carry more sail because the dynamics are low due to long wavelength and comparatively low approach velocity:

Another nuance that is worth noting here is that the schooner rig has lower sail interaction as the slot opens up when the boat comes off the wind.  That is likely to reduce the lift coefficient.  I have used Cl = 1 in all cases apart from the 170 where I used Cd of 1.5.  In this case the hull windage adds to boat speed.

Rick

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