While the VYA yardstick is 126.5, the South Australian yardstick was 140 with the Laser Radial equal in both.
Having kept statistics from several championships with top skippers sailing I estimate the most appropriate yardstick would be 132-133. Over the whole wind range from 3 knots to 25 knots the Sabre only sails to its yardstick above 15 knots. The evidence is that in the low windspeeds the Sabre sails 7-8% slower than its yardstick when compared with other single handers such as the Laser Radial and Spiral.