sherwindu wrote:
It's a well established fact that most roll overs of a monohull do not result in
the boat sinking. ...

I don't think there are many "well established facts" when it comes to
small boat survival in severe storm conditions. I've lost friends to
storms at sea who I know were excellent sailors in well found boats and
I have friends who survived the Queen's birthday storm in an old ferro
cement boat. Most of what is published about small craft in very bad
weather is based on the Fastnet, the Queen's birthday storm and the
Sydney-Hobart disasters. I know good faith efforts have been made to
draw lessons from these events. However, there isn't a lot of data to
work with and I'm not sure that all of the people charged with finding
facts were equipped to understand the evidence they judged. The only
really well established fact about all this that I can see is that even
good sailors on good boats can meet with conditions at sea that are
unsurvivable.

-- Tom.