ref:
2010 Rated Weight (RW): catamarans <= 20ft = rw^0.300, multihulls >; 20ft = rw^0.325
2010 Rated Length (RL): catamarans <= 20ft = 1.15*RL, multihulls > 20ft = 1.0*RL
2010 Rated Sail Area (RSA): larger multihull RSA changes (see RSA.items )

There is compensation on Rated WEgiht (RW), Rated Length (RL) and Rated Sail Area (RSA) using Texel.2010. The compensation is useful for Corsair Trimarans some of the time. "Crusing Cats" ahve a challenge: Rated Weight (RW). Few Big Cats get on a a load cell, other than in Australia under texel.AUS/THAI.2010.