Complex sentence: Different classes of genoa have overlaps; a number 1 genoa may be a 150%, and a number 2 genoa, 125%; jibs are also defined by the same measure, with overlaps of 100% or less.
Split into simpler sentences: Different classes of genoa have overlaps; a number 1 genoa may be a 150%, and a number 2 genoa, 125%. Jibs are also defined by the same measure, with overlaps of 100% or less.