I really appreciate the contributions thus far, how about the idea that holes in a sail would allow a sailcraft traveling directly upwind to move faster? My (non-scientific) explanation is that the work done by the wind on the sail is reduced as it gets deflects off the sail onto the oncoming...
If there is less effort needed to move the rudders, shouldn't it enhance steering? Maybe I don't understand how steering is enhanced (or how it works).
If we consider a simple case: the sail boat has the wind directly behind itself, and the sail craft is moving upwind. How would holes in the sail make a difference?
I'm not exactly familiar with the terms used to describe a sailboat, which is why I decided to bring up this simple case. I agree...
I have read articles regarding Chinese junks which utilise rudders made of rubber, and they usually have diamond shaped holes in them. These articles claim that the holes provide better handling of the junks compared to a full rudder without holes in them.
What are your thoughts regarding how...