A Cat upper limit is 22 knots this was put in place in 1988.
Fred Smith A Cat CAN31
out of curiosity, where is that documented? I hear that all the time but have never seen it anywhere.
That's in the IACA Championship Rules for running World and Continental championships and for guidance at other championship or international events. They are on the IACA website here; http://www.mathran.nl/acat/files/CHAMPIONSHIP%20RULES.pdf Clause 10 sets it out - upper limit 22 knots average over 15 minutes.
