Peter HK wrote:

There are occasional sea patterns that are uncomfortable on a multi, usually
with beam seas, but the magnitude of the event needs to be considered. Cats
reach max stability at about 5 degrees of heel (when a hull lifts). As this
never happens on cruising cats, all heel angles are less than 5 degrees.
Short sharp waves can occasionally exceed this a little due to the hulls
being in a trough and crest. Compare to a mono rolling downwind where heel
angles can be 30 degrees side to side.

Monohulls do not normally rock from side to side, nor do they heel over 30
degrees
unless you are racing. With the proper sail trim, they should not heel that
much.
You missed the point of the sails acting like a shock absorber in union with
the'
pendulum action of the keel.



Multis do have a different motion- shorter and sharper compared to slower
but much more amplitude on a mono.
Personally I find it quite comfortable. As stated in a previous post a glass
never spills, which is a significant observation on the severity of the
motion.

When a multi capsizes it floats- most are now equipped with hatches to enter
a secure part of the hull in a capsize.

And what if you are on deck at the time? And what do you do in this secure
section of the hull? Wait and hope for rescue because you won't be able to
get yourself out of trouble.

When a mono sinks however- dragged
down by that ballast that makes it self-righting- the only hope is a
liferaft.

Any boat that fills with water is going to sink. The idea about mono hulls
is that
they will right themselves before the boat fills with water.



It depends on what you think is the most basic safety feature-
nonsinkability or self righting.

I prefer the self righting. At least I have a chance to recover and continue

sailing, in that case. If it sinks, then the life raft is your backup.



Peter HK