"...The opinion of the F16 class body is that tens of other design differences between different F16 makes give cause to theoretical differences like that on the water these are noticeable. ..."
Should read
"...The opinion of the F16 class body is that in a formula framework there are tens of other design related differences that give cause to as many theoretical differences of similar magnitude but that don't give rise to noticeable speed differences on the water ..." The F18 class proved that ...
Wouter