Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 17-08-2012, 15:10   #16
Senior Cruiser
 
senormechanico's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 5,827
Re: Is There A Real Cruising Trimaran ? Question From A Mono Hull Sailor

Our DF 1000 is very nice for month long vacations, but it would be pretty tight for full time liveaboard unless it was in the tropics.
__________________

__________________
Memento,homo, quia pulvis es, et in pulverem reverteris.
senormechanico is offline   Reply With Quote
Old 17-08-2012, 16:12   #17
Registered User
 
zUrchin's Avatar

Join Date: Aug 2012
Location: Illinois retiring to the Philippines
Boat: Com-pac 25
Posts: 89
Re: Is There A Real Cruising Trimaran ? Question From A Mono Hull Sailor

Quote:
Originally Posted by Nemo55 View Post
Has anybody used say a Cal 35 or so,,and added the Bulk Heads and Ama's to make a Tri??? seems to me that this would be the best of both worlds,,,nice wide Main Hull, and lots of wing space for storage,,and lots of stability.
First of all I really appreciate your open, out-of-the-box thinking. There should be after all several ways to skin a tri

If you take that approach, won't a long keeled shallow draft for your main hull make more sense? And, even if it makes sense from an engineering perspective to use a Cal 35 (I'm not qualified), you loose the advantage of cats and tris use in skinny waters. So perhaps the question from your perspective is: Assuming the concept has merit, what would be some specific old mono hulls work best (boat models/yr)?

Worth noting too, from what I could infer from the various responses to this thread, are some concerns from others of the re-use of a stripped down 45 ft. catamaran hull as your main hull for a one-off tri is flawed from an engineering perspective. But so far, no facts have been presented for that argument.

I'd really like to see some experts on boat designs comment on the engineering and design aspect and provide some considerations as well as comments if the original idea is one even worth pursuing. What do ye experts say?
__________________

__________________
zUrchin is offline   Reply With Quote
Old 17-08-2012, 16:23   #18
Senior Cruiser
 
Therapy's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: W Florida
Boat: The Jon boat still, plus a 2007 SeaCat.
Posts: 6,894
Images: 4
Re: Is There A Real Cruising Trimaran ? Question From A Mono Hull Sailor

Quote:
Originally Posted by zUrchin View Post

I'd really like to see some experts on boat designs comment on the engineering and design aspect and provide some considerations as well as comments if the original idea is one even worth pursuing. What do ye experts say?
I am no expert and don't think they are going to bother.
__________________
Who knows what is next.
Therapy is offline   Reply With Quote
Old 17-08-2012, 22:58   #19
Registered User

Join Date: Jan 2012
Location: Pacific NW
Boat: Hedley Nicol Vagabond MK2, 37'
Posts: 979
Re: Is There A Real Cruising Trimaran ? Question From A Mono Hull Sailor

I won't pose as an expert but I will share that I've observed a Prout 45 cat, even an ancient one, has more worth and a better chance of showing a return on your time and money than 2 mongrel tris which would use more materials to construct and yet together sell for less than a restored Prout. Plus the engineering is already completed.....
__________________
Cavalier MK2 is offline   Reply With Quote
Old 18-08-2012, 11:47   #20
Registered User
 
Nemo55's Avatar

Join Date: Feb 2012
Location: Punta Banda, Ensenada. and Canada
Boat: 28Ft Piver Encore, Tri-Maran, Anchored in San Diego.
Posts: 728
Send a message via Skype™ to Nemo55
Re: Is There A Real Cruising Trimaran ? Question From A Mono Hull Sailor

Using an older Cal Mono Hull would be a choice thing to do in my view,and that's just from what i know of their build, they are built like Bullet Proof vehicles ( Overbuilt )they are so strong.
Adding Ama Mounting Bulkheads and the Ama's themselves has got to be easier than building and designing a "Weaker Combination" from scratch.

"Just Sayin"
__________________
"The Truth Shall set you Free....But First it will Piss You Off"

http://nemo1955.blogspot.ca/
Nemo55 is offline   Reply With Quote
Old 18-08-2012, 12:42   #21
Registered User
 
Sand crab's Avatar

Join Date: Oct 2010
Location: Gig Harbor, WA
Boat: 34' Crowther tri sold 16' Kayak now
Posts: 3,157
Re: Is There A Real Cruising Trimaran ? Question From A Mono Hull Sailor

You could just buy this one for $80K.
http://www.yachtworld.com/core/listi...g_id=74703&url=

Cats are engineered for the mast to be on the bridgedeck which then transmits the load to each hull. If you sawed off one hull then you would need to re-engineer it for the compressive load and actually re-engineer everything. Just buy a Searunner for 40 to 80K and be done with it and go sailing tomorrow.
Something similar was discussed, ridiculed, and harpooned in Boatdesign about a year ago.
Disclaimer: I am not a NA nor do I pretend to be one on the internet.
Actually, I guess that would just be a "claimer".
__________________
We don't need no stinking badges.
Sand crab is offline   Reply With Quote
Old 18-08-2012, 14:00   #22
Registered User
 
zUrchin's Avatar

Join Date: Aug 2012
Location: Illinois retiring to the Philippines
Boat: Com-pac 25
Posts: 89
Re: Is There A Real Cruising Trimaran ? Question From A Mono Hull Sailor

Quote:
Originally Posted by Sand crab View Post
You could just buy this one for $80K.
http://www.yachtworld.com/core/listi...g_id=74703&url=

Cats are engineered for the mast to be on the bridgedeck which then transmits the load to each hull. If you sawed off one hull then you would need to re-engineer it for the compressive load and actually re-engineer everything. Just buy a Searunner for 40 to 80K and be done with it and go sailing tomorrow.
Something similar was discussed, ridiculed, and harpooned in Boatdesign about a year ago.
Disclaimer: I am not a NA nor do I pretend to be one on the internet.
Actually, I guess that would just be a "claimer".
Sand crab, you bring up excellent points. No sense making a silk purse out of a sows ear. Even if it can be done, it may have not much merit from a financial/cost perspective which will need to be done before I pull the trigger.

Many thanks to all who have provided their comments and input.

Z
__________________
zUrchin is offline   Reply With Quote
Old 20-08-2012, 05:28   #23
Registered User
 
muskoka's Avatar

Join Date: Jun 2006
Location: Sai Kung, Hong Kong
Boat: FP Lavezzi 40 / Hatteras 48
Posts: 775
Re: Is There A Real Cruising Trimaran ? Question From A Mono Hull Sailor

Most cat hulls are not symmetrical in shape. All of them are not symmetrical structurally.

I'd guess that trying to turn a cat hull into a tri would be a wasted exercise.
__________________
muskoka is offline   Reply With Quote
Old 24-08-2012, 07:28   #24
Registered User

Join Date: Aug 2012
Posts: 3
Re: Is There A Real Cruising Trimaran ? Question From A Mono Hull Sailor

Also thinking about a crusing/live aboard tri, 34' 36' 40 max, a few nice ones :

Smart Yachting - SmartTri40 the Comfortable Fast Sailing Trimaran

Dinabar | Facebook


And the farriers of course
But a cat might make more sense, especially if the tri isn't foldable ...
__________________
yves75 is offline   Reply With Quote
Old 29-08-2012, 18:25   #25
Registered User
 
wongai64's Avatar

Join Date: Mar 2011
Location: Bali, Indonesia
Boat: FP Belize 43
Posts: 64
If you are still looking for a tri check out
boatpoint.com.au There are 2 cheap Piver's listed and some other decent deals on more expensive 37-40ft.
I agree with the analogy of the silk purse / sows ear. My opinion would be to take advantage of a depressed market and buy as much boat as you can afford. Preferably one that has had all the critical and expensive updates completed.. There are quite a few out there right now.. Good luck 😏
__________________
wongai64 is offline   Reply With Quote
Old 01-09-2012, 14:46   #26
Senior Cruiser
 
Roy M's Avatar

Cruisers Forum Supporter

Join Date: Feb 2007
Location: Southwestern Yacht Club, San Diego, CA
Boat: Searunner 40 trimaran, WILDERNESS
Posts: 3,042
Images: 4
Re: Is There A Real Cruising Trimaran ? Question From A Mono Hull Sailor

Thank you Muskoka, You are the only one so far that has nailed the key part in this futile exercise. On tris and cats, the outer hulls are deliberately asymmetrical, to achieve lift to weather when reaching. The cat hulls are vertically higher from the waterline than trimaran hulls, to provide space inside for habitat (Horstman being the exception). This is the kind of discussion that ought to be reserved for a sailor's bar, after everyone has had enough to drink that nothing serious will ever ensue.

Ditto for a monohull as the core for a real trimaran. It would end up sailing like the steel hulled trimaran I used to see at Catalina Island in the 80's, named IRON BUTTERFLY. On the other hand, going out and spending money with no idea of consequence, and creating a product that will end up in a landfill or a scrapyard, after spending years in a boatyard or marina, improves the value of existing quality boats, transfers a financial catastrophe into the hands of another willing victim who will continue the cycle of spending, all of these really do help the economy. It could be viewed as a patriotic duty. That's probably the only upside to considering this path.

This just in! A steel tri, 53 feet, was just sold for a bunch of money! The economy is truly coming back: http://yachtboatforsale.com/boats/dutch-steel-trimaran/
__________________
Roy M is offline   Reply With Quote
Old 01-09-2012, 15:58   #27
Registered User
 
Sand crab's Avatar

Join Date: Oct 2010
Location: Gig Harbor, WA
Boat: 34' Crowther tri sold 16' Kayak now
Posts: 3,157
Re: Is There A Real Cruising Trimaran ? Question From A Mono Hull Sailor

That steel tri was for sale for years. I think it weighed about 46,000 lbs.
__________________

__________________
We don't need no stinking badges.
Sand crab is offline   Reply With Quote
Reply

Tags
cruising, hull, trimaran

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 18:00.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.