There is a Freedom 28 cat ketch a few slips away from my boat. One day when the owner was out sailing one of the masts broke off even though it wasn't a windy day. He ended up replacing both carbon fiber masts since there were signs of possible problems with the other mast.Dismasting is much more of an issue with a marconi rig than a carbon free standing one. There are very, very few dismastings of Nonsuch or Freedom and it is a pretty large pool of boats. A few of the very early Nonsuch had problem because the mast builder did not understand engineering (drilled a big hole thru the aluminum mast right at the partners).