Re: Most Efficient Hull??
- Hello Ron, tried five times to send you photos and papers of
MADERFORM hulls (similiar to SAND PIPER)to your private
adress "artemis@p...." but all were rejected by Mail Delivery
Subsystem Mailer Daemon .... :" The following adress had permanent
fatal errors..". Whats my failure ? Regards, Manfred
--- In AtkinBoats@yahoogroups.com, "Ronald Fossum" <artemis@p...>
> Thank you, Manfred, for your kind response. I would certainlyappreciate any information you might have. My internet connection is
DSL so large (up to 5Meg) file size is not an issue.
>21' 6" LOA, 6' beam and (hopefully) 6" - 7" draft. It will be powered
> My intention is to build a turnnel stern Sea Bright Skiff of about
by a high speed steam plant - total weight of under 350 lbs. - with
engine rpm max at 2000rpm / 15+ shaft HP.
>would retain the Atkin plywood construction for the area below the
> I liked what Robb White did with his version of Rescue Minor, but I
chines (making it of 1/2" marine plywood - 1" for the flat
bottom/keel). I would develop the topsides as curved forms - much
like the original Sea Bright Skiffs - and use glued plywood lapstrake
planking - ala Ian Oughtred - probably of 3/8" marine plywood. If
you're interested, I could scan some scaled sketches (once they're
completed) and email them to you. I have a copy of "The Sea Bright
Skiff and other shore boats" by Peter Guthorn as well as "Building
Classic Small Craft & More Building Classic Small Craft" by John
Gardner", so have researched the design fairly well. My local Public
Library also has the Motor Boatings Ideal Series (complete) where the
Atkins published all of their Sea Bright Designs (complete with
>further refine the design. I then hope to start actual hull
> I plan to build a 3/4" = 1' model (as Weston Farmer recommends) to
construction sometime this summer and, as I am now retired, have the
hull completed before the rains set in here in Portland, Oregon
(usually in late October). I have some background, professionally, in
wooden boatwright work, mostly in repair and restoration. I still
have a LOT of clamps, etc. to make the work go easier.
> Any information/help you can provide would be appreciated.
> Ron Fossum, artemis@p...
> ----- Original Message -----
> From: liokai2002
> To: AtkinBoats@yahoogroups.com
> Sent: Wednesday, January 19, 2005 2:18 AM
> Subject: [AtkinBoats] Re: Most Efficient Hull??
> Hi Ron, think you will not find "Maderform Hulls" using Google.
> Mader is a shipwright and has a wharf called "Hycom" in DuisburgWhen
> (Germany). Suppose there are many Hycoms in the Google world.
> you send me your adress, I can post you some papers and pics, notanother.
> professionally, just from one interested "hydrodymaniac" to
> Regards, Manfreddid
> --- In AtkinBoats@yahoogroups.com, "Ronald Fossum" <artemis@p...>
> > Thank you for your response, Manfred.
> > I have heard of, and seen reference to, "Maderform" hulls - but
> not understand the concept. Now I think it would be useful toknow
> more. I used the Google search engine and looked for "Maderform(lots
> hulls" (no results, do I want maidenform bras?) and Paul Mader
> of stuff about a Paul Mader who is heavily involved inagriculture in
> 3rd world areas).me.
> > Do you know of any websites that discuss/have information on
> Maderform hulls?
> > Many thanks.
> > Ron Fossum
> > ----- Original Message -----
> > From: liokai2002
> > To: AtkinBoats@yahoogroups.com
> > Sent: Tuesday, January 18, 2005 1:25 PM
> > Subject: [AtkinBoats] Re: Most Efficient Hull??
> > Hello Ron,
> > indeed, I would like to do this. But this is not possible for
> > First, the costs to run a water tank test series are veryhigh
> > I`m retired now with no personal access.
> > Second, there have been tests with similiar hulls since more
> > years by Dr. Paul Mader ( "Maderform" hulls ). And these
> > been developed year by year and are patented now (think, I´m
> > date). They deliver hydrodynamic lift in the after third part
> > hull, a very smooth water behind and nearly no whorls (
> vortices )
> > leave the hull. I have a DVD of the last tests in Berlin
> > a very smooth waterflow of the hull and a very stable course.
> > Meanwhile there are some ships with these Maderform hulls on
> > BODENSEE and other waterways in Germany, which have proventheir
> > superiority over coventional designs. But as with all newthe
> > developments there are a lot of established people who deny
> > merits of Maderform hulls although all tests andplans
> > (Navier-Stokes) have shown their superiority.
> > Having the Maderform hulls in mind and looking at the study
> > SAND PIPER one can find "some" similiar aspects. One might be
> > negative deadrise at the stern. But there is more and thishas to
> > tested. I´ll try to get the plans of SAND PIPER ( with the
> > DUCKWORKS as they accept my Master Card ), build a down sized
> > and test it here on the Baltic. In my cellar I try to twist
> sheets of
> > aircraft birch ply for a small model to gain an underwater
> > SAND PIPER, to gain the same clever waterflow. But I`m not
> > succeed. Regards, Manfred
> > No flaming, cursing, politics, religion or public mopery.
> be polite.the
> > If you set out to build an Atkin boat, please do not modify
> plans. If you stray from the plans you do so at your own risk andthe
> Atkin & Co. will take no responsibility for the performance of
> resulting boat.----
> > The current Atkin boat plans catalog is online at
> > <http://www.atkinboatplans.com/>
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> No flaming, cursing, politics, religion or public mopery. Please
>plans. If you stray from the plans you do so at your own risk and
> If you set out to build an Atkin boat, please do not modify the
Atkin & Co. will take no responsibility for the performance of the
> The current Atkin boat plans catalog is online at
> Yahoo! Groups LinksService.
> a.. To visit your group on the web, go to:
> b.. To unsubscribe from this group, send an email to:
> c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of
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