"Not a problem for catamarans!"
but the rotational energy around the longitudinal axis imparted by a steep & fast moving wave certainly is! nearly did our Wharram
cat in & was maybe only 8 or 10' high. could have been our subjectiv perception, but the cat seemed to teeter & things that hadn't budged in nearly 40.000nm of rtw violently flew around.
convinced me that it is not necessary for a wave to actually lift
the windward hull high enough for the boat to capsize
, imparting a sufficiently strong rotational impulse suffices