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06-12-2012, 01:04
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#1
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Pusher of String
Join Date: Feb 2007
Location: On the hard; Trinidad
Boat: Trisbal 42, Aluminum Cutter Rigged Sloop
Posts: 2,314
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As a die hard alloy boat owner and also a bit of a die hard mono owner I was wondering were there any manufacturers of quality alloy cats.
I would love to know names and prices of quality alloy cruising cats in the 40'ish range...
Only real requirements are a rugged boat that sails well. I can trade living space for performance since a "small" 40' performance cat is a lot bigger still than my 42' mono. Doesn't need to be new either, in fact prefer a couple years on her to lower cost and let someone else do the shakedown...
Thanks for th help
Oh and don't get crazy, I am not converting...just curious
__________________
"So, rather than appear foolish afterward, I renounce seeming clever now."
William of Baskerville
"You will do foolish things, but do them with enthusiasm."
Sidonie Gabrielle Colette
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06-12-2012, 01:22
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#2
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Moderator
Join Date: Jul 2007
Boat: Bestevaer.
Posts: 14,678
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Re: Aluminum Catamaran Manufacturers
Allumarine in France, who made my boat make some semi production aluminium cats. They have also made quite a few one offs.
I have seen some other French aluminium cats "banana" I think
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06-12-2012, 03:22
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#3
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Registered User
Join Date: Aug 2006
Location: Brisbane Australia [until the boats launched]
Boat: 50ft powercat, light,long and low powered
Posts: 4,409
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Re: Aluminum Catamaran Manufacturers
Google Mumby 48 and Colorado/Harwood Marine Cebu
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06-12-2012, 03:35
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#4
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Registered User
Join Date: Nov 2009
Location: Virginia, USA & Krabi, Thailand
Boat: Wauquiez Pretorien 35
Posts: 2,819
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Easton is another name to Google. Some of those around, usually 42' I think.
__________________
Mundis Ex Igne Factus Est
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06-12-2012, 04:32
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#5
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Registered User
Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,108
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Re: Aluminum Catamaran Manufacturers
Aluminum doesn't become very favorable for use in catamarans until ~50', so finding an aluminum cat around 40' that still carries cruising loads and isn't an outright dog will be difficult. Here is another: Hy-Tech Marine, Inc. - FastWater 52 SailCat
Mark
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www.svreach.com
You do not need a parachute to skydive. You only need a parachute to skydive twice.
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06-12-2012, 05:51
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#6
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Moderator Emeritus
Join Date: Jul 2010
Location: Key West & Sarasota
Boat: Cal 28 "Happy Days"
Posts: 4,210
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Re: Aluminum Catamaran Manufacturers
Quote:
Originally Posted by colemj
Aluminum doesn't become very favorable for use in catamarans until ~50', so finding an aluminum cat around 40' that still carries cruising loads and isn't an outright dog will be difficult. Here is another: Hy-Tech Marine, Inc. - FastWater 52 SailCat
Mark
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Why???
__________________
Any fool with a big enough checkbook can BUY a boat; it takes a SPECIAL type of fool to build his own! -Capngeo
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06-12-2012, 07:12
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#7
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Registered User
Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,108
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Re: Aluminum Catamaran Manufacturers
Weight mostly. The scantlings required for aluminum catamarans are heavier than those for fiberglass or wood until ~50', when they become equal and even lighter. To a lesser extent, aluminum building techniques are relatively more expensive for smaller boats.
Mark
__________________
www.svreach.com
You do not need a parachute to skydive. You only need a parachute to skydive twice.
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06-12-2012, 07:46
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#8
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Registered User
Join Date: Dec 2012
Location: San Antonio, Ukraine.
Posts: 29
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Re: Aluminum Catamaran Manufacturers
I was going to ask that.
So, it reads like Aluminum is preferred for cats over 50'?
Thanks
wayne
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06-12-2012, 08:16
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#9
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Registered User
Join Date: Oct 2011
Location: Netherlands
Boat: No boat..yet.every now and then they let me be the winch monkey...
Posts: 187
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Re: Aluminum Catamaran Manufacturers
Hello Foolishsailor,
Here is a cruising cat made from aluminium;
http://www.ngyachtdesign.com/multico...oile.php?id=14
42 ft and 8.25 tonnes,so it is definitely a cruiser and not a racer although it is a bit lighter then a lagoon 400 I believe.
Cheers,
JJ
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06-12-2012, 08:41
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#10
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Registered User
Join Date: Aug 2006
Location: Skagit City, WA
Posts: 25,453
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Re: Aluminum Catamaran Manufacturers
There's one up here in the PNW for sale, so someone makes them. It doesnt look but maybe 40 ft.
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"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard
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06-12-2012, 09:18
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#11
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Moderator Emeritus
Join Date: Sep 2007
Location: Eastern Tennessee
Boat: Research vessel for a university, retired now.
Posts: 10,406
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Re: Aluminum Catamaran Manufacturers
It would be interesting if someone could find some displacements for aluminum cruising catamarans under 50 feet. I would imagine many people would like to see the facts.
__________________
David
Life begins where land ends.
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06-12-2012, 11:33
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#12
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Moderator
Join Date: Jul 2007
Boat: Bestevaer.
Posts: 14,678
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Re: Aluminum Catamaran Manufacturers
I am most familiar with monohull construction. For an equivalent strength, aluminium is lighter than a solid fibreglass structure, about the same same as a cored fibreglass structure and heavier than an epoxy laminate cored structure.
The limiting factor with aluminium is that a skin thickness less than 4mm is not practical. Welding a fair structure with a skin thickness less than this is difficult.
In a monohull this sort of skin thickness would be used on a 30 foot boat. For a catamaran the length is somewhere around 40 feet.
So below 40 feet an aluminium catamaran is likely to be heavier. Above 40feet the aluminium catamaran will be lighter than a solid structure below the waterline and cored above. Above 50 feet it is likely the aluminium will be slightly lighter even compared with a cored structure.
An epoxy carbon/Kevlar/E-Glass cored structure will be lighter again.
A cored structure is more prone to damage (delamination and water penetration) and this must be weighed against the strength and cost saving advantages.
In short a monohull of less than 35 feet, or a catamaran less than about 40 feet is not sensible to construct from aluminium, unless there are specific requirements.
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06-12-2012, 14:28
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#13
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Pusher of String
Join Date: Feb 2007
Location: On the hard; Trinidad
Boat: Trisbal 42, Aluminum Cutter Rigged Sloop
Posts: 2,314
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__________________
"So, rather than appear foolish afterward, I renounce seeming clever now."
William of Baskerville
"You will do foolish things, but do them with enthusiasm."
Sidonie Gabrielle Colette
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06-12-2012, 14:40
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#14
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Registered User
Join Date: Nov 2009
Location: Virginia, USA & Krabi, Thailand
Boat: Wauquiez Pretorien 35
Posts: 2,819
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Re: Aluminum Catamaran Manufacturers
Quote:
Originally Posted by foolishsailor
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Mumby, ...yeap I like them. A couple here in charter out of Phuket. Here is an old thread about them...
http://www.cruisersforum.com/forums/...tml#post306275
__________________
Mundis Ex Igne Factus Est
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06-12-2012, 14:42
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#15
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Registered User
Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,108
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Re: Aluminum Catamaran Manufacturers
The listing on the second one says it is made of aluminum, not fiberglass.
Either way, it looks nice to me! It is larger than what you originally said you were looking for. Aluminum build at 48' hits the sweet spot for aluminum much easier and better than 40'.
Mark
__________________
www.svreach.com
You do not need a parachute to skydive. You only need a parachute to skydive twice.
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