My father''s boat was hit with the mast from one as it capsized. He was anchored in a rhodestead in the Bahamas during a storm. The winds were very gusty and shifty between 30 and 40 knots. The cat was swinging around on its mooring and ended up sufficiently across the wind that a gust was able to capsize it. That was under bare poles. Its never left me feeling warm and fuzzy.
During a trip to Florida a few years back I saw a cat in a yard that had capsized. It had been salvaged and been lifted out of the water upside down.