67735MultiMonoMania Unstayed squareup[was Re: Wish2 SketchUp (was SketchUp Chebacco)]
- May 1, 2012nothin' holdin' me back n0W WHO0 H0O! PPPPrrroouwwwwpphhhtppppblath
> Can you build a multihull without staying the rig?Hold on.
Yes and Yes.
You can. Better, you can even go bi- or tri-"plane"! And quick and easy tabernacle pivoted mast lowering for that larger boat too.
Take a look at Bern Kohler K-design developments here's the FAQs http://www.ikarus342000.com/FAQ.htm - at page bottom. If the site is unstable for your browser then you may view it as converted to pdf http://www.web2pdfconvert.com/
Gary Lepak built Dragon Wings http://web.archive.org/web/20030706102648/http://multihullboatbuilder.com/workshop/ThreeBoats/ThreeBoats91.html
Pete Hill (Annie's ex http://www.annie-hill.blogspot.com.au/ http://en.wikipedia.org/wiki/Annie_Hill http://www.youtube.com/watch?v=0T9yrQR8nl8 ) and Annie (for most of the build) built a Junk Rigged catamaran designed by Pete
he sold that recently, went through some other boats http://www.towndock.net/shipping/2007_05_01_shiparchive.html
and is now nearing completeion of a stretched KD860 (smaller than C M was and very nice) with modifications including tabenacled pivoting biplane Poppy junk rig.
Yves Parlier also winged it http://www.thedailysail.com/offshore/04/47936/we-take-a-close-look-at-yves-parliers-radical-new-60ft-catamaran
Pete Goss http://en.wikipedia.org/wiki/Pete_Goss did it fast too with Team Phillips http://en.wikipedia.org/wiki/Team_Philips http://www.petegoss.com/journey-to-date-team-philips.php
Tony Bigras designed built and extensively cruised his 16ft cat with unstayed biplane rig, Miss Cindy, and liked it
Thomas Firth Jones did it initially to one of his personally owned boats, the plywood version of the Tanenui he designed for Wharram, and didn't like it. Others have done it, and continue to do it to Wharram boats (a big one soon) and others, and like it. The list is long and mostly positive.
> > I don't understand why we don't make the logical leap from thesePCB went wide, BOA that is, but narrow hulls in some sharpie catamaran designs and sketches. Trailered too, and some beaut Vee bottomed working powered catamarans. Then. ... Then there is:
> > criteria - go above and beyond the conclusion of a narrow hull -
> > wider square boat - trailered - own lifeboat- fun daysailer -
> > unsinkable... and you end up with a multihull.
"31' Cruising Catamaran
I made this concept study as an illustration for a British book about cruising multihull design. The wide hulls with all accommodation in the hulls, and the asymmetrical layout with most of the propulsion and control in one hull and most of the accommodation in the other, are notions I've often pushed, without arousing much interest so far. The 'back staysail' is to balance the exaggerated lee helm of a reefed staysail cat"
This is what grabs me: Quote "_often_" unquote. I know of only two, and they both share at least another really attention grabbing thing mentioned in that Derek Harvey "Cruising Multihulls" book: less "jagged" catamaran stability curve. Oh, and mono sized docking fees...
( square hull cat thread: http://groups.yahoo.com/group/bolger/message/40850 )
"... The 'back staysail' is to balance the exaggerated lee helm of a reefed staysail cat. This rig is docile to handle though, unless sailed by a super expert, it isn't as fast as a conventional cat or sloop. For a mulithull the worthwhile virtue is that it has minimal tendency to push the bow down."
Docile? Fine. Not as fast? Who cares, we're cruising. An unstayed pivoting tabernacled rig would be great on this boat. I feel there's a lot that could be done based on this sketched cruising cat, test what Phil was exploring and explore some further. ... Biplane rig presents itself.
> I don't know about the 'logical leap.' A huge part of the promiseThere maybe advantages to 31' Cruising Catamaran over a skinnier hulled, biplaned, bi-hulled ESC... or unstayed rig on stretched ESC proa, way to go!
> of Wish II is simplicity and ease. Ease of build. Ease of rig. Ease
> of launch and sail. It's hard to set that stuff aside. And let's
> not forget ease of pocketbook! It was conceived as an instant boat.
--- In email@example.com, "John" <oneillparker@...> wrote:
> I don't know about the 'logical leap.' A huge part of the promise of Wish II is simplicity and ease. Ease of build. Ease of rig. Ease of launch and sail. It's hard to set that stuff aside. And let's not forget ease of pocketbook! It was conceived as an instant boat.
> Certainly arcing the bottom complicates the build significantly, but three hulls? Or even two? We're getting into an order of magnitude range of increased building complexity. Can you build a multihull without staying the rig? More complexity. More cost. And trailering? Now you need to fold things. Even more complexity! More cost! Where does it end!
> Keep smiling!
> --- In firstname.lastname@example.org, Stefan Topolski <public@> wrote:
> > I don't understand why we don't make the logical leap from these criteria - go above and beyond the conclusion of a narrow hull - wider square boat - trailered - own lifeboat- fun daysailer - unsinkable... and you end up with a multihull.
> > The first and farthest ocean going vessels - shoal draft - safer - faster - much more stable - own-life-boats... setting aside hull construction time and cost [which are not mentioned strongly in the prior post] this becomes the logical conclusion of the logic Bolger has shared with us.
> > http://www.seaworthysolutions.net/f/Seaclipper_24_Trimaran_Study_Plans.pdf
> > Now if you are talking looks (in the eye of the beholder) or tradition (each to his own again) that's another story. But those arguments lack logic, and the poster did not wax long about aesthetics in their post.
> > .... i'd still rig it Bolger Chebacco style - wide and low and sticking off both ends ...
> > All the Best,
> > Stefan
> > "One gathers peace as a feather in the palm of one's hand." -anonymous
> > Stefan Topolski MD
> > Assist. Professor, U. of Massachusetts Medical School
> > Clinical Instructor, U. of New England
> > Founder and Director of
> > Caring in Community, Inc. 501(c)3
> > 1105 Mohawk Trail
> > Shelburne Falls, Ma.
> > http://www.cottagemed.org
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