I can only speak from the experience of being on a heeling boat for 1/2
month at a time. It gets old pretty fast... everything needs to be nailed
down or, as I tell my students, it will end up safely on the floor.

--
"j" ganz @@
www.sailnow.com

"Paddy Malone" wrote in message
...
Well said, and a great post from boatgeek.

Another important consideration is the effect of heeling and rolling on
crew performance. The U.S. naval study of this by JB Hadler and TH Sarchin
(see The Cruising Multihull by Chris White) found that a sustained 10
degree roll angle reduced ability to perform routine tasks by as much as
50%!

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".

Cheers

"Capt. JG" wrote in message
...
"sherwindu" wrote in message
...
*Stability. I don't see it actually from a comfort point of view as
much as safety. If the boat doesn't rotate 45 degrees because of
fluke wind shift it means my wife and son don't get thrown around like
rag dolls.

Strong winds do not suddenly shift like that. You can get that in
light
airs
and then such an effect is minimal on the boat. Of course, an
accidental
jig could cause some problems, but we won't address that.

They do out here. We have a spot on the bay called Hurricane Gulch.
Happens there all the time.

*Positive bouyancy.

This could be incorporated into a monohull, if it was a high
priority objective.

. I can stop and launch a
dingy to assist another boat in just 3 or 4 minutes.

I tow my dinghy behind the boat, so launching is not an issue.

On long distance cruises?? That's fine for a couple of hours, but you can
run into real problems with a dinghy under tow, not to mention slowing
the boat.

*large wide decks.

A possible advantage.

I would say huge advantage. It's much harder to accidentally fall off.

*Shallow draft.

This is a definite advantage for places like the Bahamas.

Or any place you want to get close in.

*Good visibility from inside.

Monohulls have windows, don't they?

Sure, but they aren't panoramic. He said "good visibility." :-)

*twin short keels. It allows us to "walk" off a beach and easily
kedge ourselves back into the water should we drag onto the shore (ok,
not too proud to admit that). But imagine having dragged anchor in the
middle of the night. In a monohull you'd be woken up by the fact they
you are lying completely on your side with waves threatening to wash
into your cockpit and down the companionway.

On the contrary, you get woken up when your keel starts bumping on the
bottom, and you don't go over, you just sit where you are, aground.
You

Well, possibly true, but I'd rather deal with the situation in an upright
position than on my ear.

Deliberately running aground is also an option to get a decent night's
sleep. It's not great for the bottom paint, but it's much more of an
option. We had to do that in Belize.. that or sail all night (which the
charter company specifically told us not to do, due to fishing pots and
small fishing boats with no lights).

are in an anchorage where despite strong winds, you should not get
big waves.



*Most catamaran thru hulls are above the waterline. I've seen too
many monohulls sink because a hose fitting for their sinks came loose
during the night. I've also had my hose fittings also come loose on
my galley sink drain, and had to tighten them again. That's it. No
water rushing in, no panics.

This kind of design is not peculiar to multihulls. My monohull has
all
it's thru hulls below the water line.

I think that's what he said... :-)

*Capsizing - Some believe that the monohull ability to heel to dump a
gust of wind gives them an advantage because the catamaran can't heel.
True, cat's don't heel. We accelerate.

There is a limit to how fast your catamaran will go. I have seen
pictures
of catamarans with one hull lifted out of the water. A strong enough
wind is going to blow it over.

Of course there are limits. There are also limits to how much pressure
your hatch boards can take when bording water. The point is that instead
of heeling, the multi sails faster.

All else aside, a catamaran has two basic STABLE configurations,
upright

and upside down. A monohull has only one STABLE configuration,
upright.

Nope. It's got two. Upright on the top and upright on the bottom. :-)

That's the way catamarans
have the same "pressure valve" for dumping unexpected gusts, we can't
heel, therefore the force is directed into motion forward. That's the
safety valve.

When your upwind hull comes out of the water, there goes your safety
valve.
Wave action can contribute to this problem. I can judge this problem
easily
on a monohull by the amount of heel. On a catamaran, you have to be a
very
good judge of speed, or otherwise you will have little warning, except
for the
upwind hull coming up, and by then, it may be too late.

True, especially on crusing cats. However, this an extremely rare
occurance and just a bit of careful thought will prevent it.

I've been in the gulf stream in November, in large
waves and trade winds down in the caribbean, I go fast.

I think you have been very lucky up to now.

I think he's probably very skilled.

While going
fast I can take my time and reef the sails without worrying about
falling over the rails. I think the reason this keeps coming up is
that every serious cruiser in a monohull has had a knock down and that
fear is very present in their minds.

The serious monohull sailors keep their sail plan under control by
reefing,
heaving to, or going bare pole, so most of them don't experience
knock
downs.

Absolutely true! ... as should all sailors.

I've been in the same wind gusts
on a monohull and a catamaran. The monohull was knocked down and then
righted itself, the catamaran just went faster. We do tend to
compensate for this by sailing more by the numbers than a monohull
would (reef at 20 knots, reef again at 30 knots, even if it feels
completely under control).

I hope this helps some who are looking at catamarans. Almost every
reason I have isn't due to convenience, it's due to safety.

I agree that multihulls are great for speed and shallow draft. When
it
comes
to safety, I completely dissagree. I would not try any remote
offshore
cruising
with a catamaran.

You would be in a vocal majority, ill-informed as they are. Many, many
multis have crossed oceans even in terrible conditions and had no
problems at all. Same is true of monos. Both types of vessel can and are
seakindly in extreme conditions. One of the jobs of an experienced
skipper is to avoid extreme conditions.

The previous postings about losing the mast are not the
prevalent case. More often, the mast is mostly intact, and sailing
can
resume.

More often? Not sure I agree. If you have sails up and the boat turtles,
I think there's a good probability you're going to lose your rig. All the
time? No. But a significant amount of time to make it common.