For calculation comparisons
http://www.image-ination.com/sailcalc.html
For PHRF
http://www.phrfne.org/baseh.htm
with ODay 34 @ 147; Cal 34 at 167
Both are quite slow for their configurations but the ODay is much
faster overall. The Cal will accelerate better due to its lower weight
and thus be a better light wind boat.