From the looks of it (and my somewhat poor german) the german Yacht testing of the Elan 310 versus the Archambault 31 revealed an (early) identical IRC rating of 0.987. Now, I have no doubt about the A31's performance in light winds (probably far superior to the 310, due to the extreme difference in transom width), but this does indicate that the 310 will be a fun, sporty boat!