I have seen a Historical 18 near on lap a fleet of cats including Tornadoes and A's in these conditions. Even a modern 18 would have been back in the pack of cats..... Truly scary. The Histerical flew MASIVE sail area on the downwind and was not undercanvased on the upwind either. That combined with the weight of the boat (Steel Keel) kept it pushing through the large glass outs.