sherwindu wrote:
Paddy Malone wrote:sherwindu has contributed one important fact to
this discussion when in his

first post he stated "I have never even sailed on a cat myself".


I am not questioning the comfort of a multihull, it's speed, etc.
I'm basing my views on many years
of ocean sailing experience and my education as an applied
physicist/engineer. My concern is one
of safety. I feel that a catamaran is not immune to tipping over,
especially if conditions do not permit
the reefing of sails.

Cats can tip / trip, but usually this is the domain of racing cats with high
powered rigs and sailplans. These aren't the rig ratios you'll normally find
on a cruising multi. On heavier cruising cats or tri's, the beam ratio (and
inherent stability) is far more likely to see the rig wiped off from running
overpowered, than capsizing the boat. The truth is that cruising cat or tri
capsize is very unusual, and usually requires a combination of crew error
(or stupidity, like a recent capsize in Indonesia achieved under screecher
in 35+knots) with extreme wind and sea states to achieve.

These comments about monohulls sinking is
overstated. Sure they do, but not
necesarily because of their basic design. Catamarans are made of
fiberglass, etc., which last I heard
is something that is heavier than water and will sink under certain
circumstances.

Cats and Tri's generally won't sink, and I can't think of any that I know of
that have; but they can break up, which is their worst outcome and usually
results from some sort of 3rd party collision (reef, container,
whale/sunfish) to name a few, which is why I carry a liferaft. I read
elsewhere in this thread, and know of many other multihull sailors who don't
consider the expense and weight of a liferaft justified. I don't understand
this rationale when offshore sailing, but each to their own.

Reducing sail can
decrease the probability of a roll in both monohulls and multihulls.
Freak wave action can roll a boat
over even with these precautions. I personally would feel safer and
more comfortable in a boat that
I know is going to come back up on it's own, with or without it's
rigging, than hoping I can get into a
watertight compartment with my boat floating upside down.

Either outcome may be unavoidable, and both outcomes are unsatisfactory.
Have you ever been rolled right over in a keelboat? I'm guessing not,
because the one time I was (which was in a harbour, btw) the absolute chaos
below from shipped water, fouled supplies, loose equipment, battery acid and
the like made it no place to want to be for any period of time. I have never
capsized on a cabin-sized multi, and doubt it would be much better inside,
although the idea of inflating and securing the liferaft on the inverted
hull(s) once the conditions quieten down has some appeal - although I'm not
sure how it would work in practice. I suppose it could be allright if one
had rigged some points in advance to secure everyhing.

The
problem with taking a multihull on an
extended voyage, say an ocean crossing, is that the chances of
running into real bad weather increase.
In the very extreme, one can take down all sails in a monohull,
batten down the hatches, put out a sea
anchor and ride things out. If for some reason the boat is rolled
over, it will right itself. Can't say the
same thing for a multihull. Granted this is an extreme case, but if
I were planning an ocean crossing,
it would certain cross my mind as a possibility.

The theory of lying to a parachute on a multi is standard heavy-weather
practice. I've never heard of one capsizing from this situation. In fact,
the multi lying to on a correctly set bridle and parachute is really a
pretty comfortable solution when circumstances dictate it.

Why don't you get out on a cat or tri sometime, and observe the differences
for yourself? There are a lot of differences between multis and monos, and
mostly they don't bear repeating, having been covered elsewhere in this
thread. I sail multis primarily because the cruising grounds in easy reach
here are quite shallow and require occasional foray into very shoal waters.
Running a deep-draft keelboat would be a pain in the arse, and I don't much
care for the performance of shallow-bilged monos.

I like cats, tris and monos, and can appreciate the relative merits of all 3
styles, and personally, I wouldn't hesitate to venture offshore in a well
found example of either type.

Ian