Light air performance of different multihulls?

[Alistair242]

A lagoon 42 is listed at 26,681lbs, a lot more than the other two boats mentioned.
The 45 is 33,296lbs.
The 43 is a power cat and pretty heavy as well.
These numbers from the Lagoon site
https://www.cata-lagoon.com/en

[dustman]

Many of these cats are larger than a lot of people's apartments. Pretty soft sailors out there.

[Tupaia]

Originally Posted by dustman

Many of these cats are larger than a lot of people's apartments. Pretty soft sailors out there.

I don't mind being a soft sailor, it is supposed to fun. Limitations for most folk is just money.

Azizam sailed through this morning.

https://www.youtube.com/watch?v=RPlMUq6yjd8

Just as a point of interest 2800 Nm crossing in 16 days is only an average speed of 7.3 knots. I think I would probably be comfortable when I got there.

[Factor]

Can someone, anyonme explain why the thread title is "light air performance of different multihulls" and yet we keep talking about monos?

Oh and by the way, I wont cross oceans in any boat that can sink, and that includes almost all monos and some cats.

[Tupaia]

Originally Posted by Factor

Can someone, anyonme explain why the thread title is "light air performance of different multihulls" and yet we keep talking about monos?

Oh and by the way, I wont cross oceans in any boat that can sink, and that includes almost all monos and some cats.

Because monohull sailors feel threatened.

[Alistair242]

Originally Posted by Tupaia

I don't mind being a soft sailor, it is supposed to fun. Limitations for most folk is just money.

Azizam sailed through this morning.

Just as a point of interest 2800 Nm crossing in 16 days is only an average speed of 7.3 knots. I think I would probably be comfortable when I got there.

That looks like fun!
Quick trip.

[mikedefieslife]

Isn't the sea sate more important. Most boats will sail happily in 5-10 or more knots, but the problem is each time there is a wave or more likely some swell, the sails will collapse and flail around, then reattach to the airflow violently, rinse and repeat. Usually there is nothing you can do to stop it. Happen on and off the wind and can be very violent.

[wingssail]

Originally Posted by fxykty

I expect you are wrong by your own example - you live aboard a racing monohull perfectly happily as you’ve told us. Why would it be any different for a performance oriented catamaran?

How is a performance cat not well suited?

I look at ours (albeit 53 foot long) and she has everything we could possibly want for two of us and occasional crew or guests.

I'm basing that after watching videos of Marsaudon cats. There didn't seem to be a lot of storage. I could spot the inside of the hull pretty much everywhere. The storage lockers were small bins.

Then there is the light weight, which is good from a performance standpoint, but it becomes very easy to weigh a light boat down and then a lot of the performance might be lost, (from what I hear, I'm not a multi sailor).

But, a 53 Outremer, I've seen one. It might not be so hard.

[barnakiel]

Well, so I think this one time we did find out the order eh?


Get a formula cat.
Get a Marsaudon.
Get an Outremer.
...


etc.


As expected, light sporty cats have best light wind performance.


The same story with monos.


b.

[sailingharry]

I've only sailed one multihull, a Catana 43, 1000 miles offshore in 7 days flat. That's just under 6 kts, we were in the Gulf Stream for much of it, we motored for a big chunk, and we had 50kts from the quarter for a day.


My old boat was a '79 Sabre 34, and I can't recall ever being out for a daysail where we didn't outperform every cruising cat we ever were near. Our new monohull is even faster.


Yes, performance cats can go fast if properly fitted out, sailed light, and sailed by good crew. The problem, and a big part of the reason we are in a monohull, is that any "performance cat" big enough to live on (I really think that for various design constraints, the lower limit is around 40') is far too expensive --- the price of a monohull that can easily break wind speed in light airs (5-10) is half that of a catamaran. We consider 5-10 a nice day sailing -- regardless of which direction we go (upwind, reach, or downwind).



This isn't a dig against catamarans specifically -- but more about the price and market segment. $150K will get you a very nice, fast, seaworthy 40+ monohull, but only a sluggish condomoran (and even then, it will be smaller and somewhat tired). For a performance cruising cat at or near 40 feet, you'll need more like $300K+, which drives the decision for many of us.


But more to the OP's point, you will find very few of the charter style cats at 40 feet +/- that actually sail in winds under 10-15 -- the vast majority (seen as an outsider watching) seem to motor or motorsail in winds below that range.

[smj]

Originally Posted by sailingharry

I've only sailed one multihull, a Catana 43, 1000 miles offshore in 7 days flat. That's just under 6 kts, we were in the Gulf Stream for much of it, we motored for a big chunk, and we had 50kts from the quarter for a day.


My old boat was a '79 Sabre 34, and I can't recall ever being out for a daysail where we didn't outperform every cruising cat we ever were near. Our new monohull is even faster.


Yes, performance cats can go fast if properly fitted out, sailed light, and sailed by good crew. The problem, and a big part of the reason we are in a monohull, is that any "performance cat" big enough to live on (I really think that for various design constraints, the lower limit is around 40') is far too expensive --- the price of a monohull that can easily break wind speed in light airs (5-10) is half that of a catamaran. We consider 5-10 a nice day sailing -- regardless of which direction we go (upwind, reach, or downwind).



This isn't a dig against catamarans specifically -- but more about the price and market segment. $150K will get you a very nice, fast, seaworthy 40+ monohull, but only a sluggish condomoran (and even then, it will be smaller and somewhat tired). For a performance cruising cat at or near 40 feet, you'll need more like $300K+, which drives the decision for many of us.


But more to the OP's point, you will find very few of the charter style cats at 40 feet +/- that actually sail in winds under 10-15 -- the vast majority (seen as an outsider watching) seem to motor or motorsail in winds below that range.

I’ve got a 40’ performance catamaran that would absolutely smoke your Saga 43 monohull, and for $150k I’ll sell it to you tomorrow. Interested?

[Training Wheels]

Please, I would like to see the list of cruising monos that sail faster than wind speed in 5 - 10 knots of true wind. Really, genuinely interested.

[Factor]

Originally Posted by sailingharry

-- the vast majority (seen as an outsider watching) seem to motor or motorsail in winds below that range.

See here for a cruising couple in their late fifties on a proper sailing cat
6 knots true, 10 knots boat speed, lets see your Sabre rattler do that!

[Yihang]

Originally Posted by Tupaia

I don't mind being a soft sailor, it is supposed to fun. Limitations for most folk is just money.

Azizam sailed through this morning.

Just as a point of interest 2800 Nm crossing in 16 days is only an average speed of 7.3 knots. I think I would probably be comfortable when I got there.

In the video they mentioned their autopilot failed and a rudder failed together one night.

[mglonnro]

Originally Posted by Factor

See here for a cruising couple in their late fifties on a proper sailing cat
6 knots true, 10 knots boat speed, lets see your Sabre rattler do that!

What cat is that?