Originally Posted by matoi
Sorry for a digresion from main topic, but could you please explain why is a non overlapping jib
so important. I thought that non overlaping sails
are much less effiecient. Thank you. Mato
It all depends on the design of the boat, rig and sailplan. You have sloops with a small main and a big genoa
and you have sloops with a huge main with a big roach and a small jib
. As boats become big, a big main is much easier to handle than a big (think 140%) genoa
Most, but not all, cats have the big main. Most older mono's have the small main. Trying to change from one to the other is difficult because the mast
and chainplates should be moved.
You are referring to the slot effect between jib and main. Yes, that is important for the "old design" sloops. The modern ones sail fast with main alone while the older type sails
faster with genoa alone.
A high aspect cut also make a more efficient foil. A 95% jib can also be pulled further midships for higher pointing and this is more important when the beam becomes wider, like a cat.