Practically every South African built catamaran in service in the Caribbean arrived from down south on its own bottom. Ditto the French built cats in service here and all the US built boats. I have numerous cat customers whose boats are in crewed charter and every year either cross to the Med or head up to New England for the summer and return here for the winter season. Yes, there is the potential for inversion, but there is probably less danger of that than a Grand Banks flooding from having its ridiculously large windows shattered by a breaking wave. Thinking of the "Andrea Gail", how many monohulls do you see with dinghies and heavy lifts on the upper decks, seriously degrading what stability exists with semi displacement hulls. These boats are probably less suited to being offshore than a power cat. Bob Phillips, Another Asylum, 60' custom trawler