Wharram Builders and Friends

A Photo & Discussion Forum for Wharram Design Enthusiasts

Raf
  • Male
  • North QLD
  • Australia
Share on Facebook Share

Raf's Friends

  • Andrew Korobov

Raf's Groups

Raf's Discussions

structural concern
5 Replies

Hi all.I've found a tiki 30 for sale and considering to buy it but, the boat wasn't build by plan and I am much puzzled about the engineering and structural strength. The boat is made of fiberglass…Continue

Started this discussion. Last reply by Raf Aug 6, 2013.

Hove to
2 Replies

How hove to is done on a cat? Please. I know how to do it on a mono and this is tacking without releasing the jib and when the jib is taken aback, release the main sheet and turn the rudder to go…Continue

Started this discussion. Last reply by Ann and Neville Clement Jul 2, 2013.

Beam connection
13 Replies

Hi all. I am looking to buy a Wharram 30' to 36' and found a couple I can afford however, the design doesnt  seem correct to me, where the beams connect to the hull. Here are 2 pics of a 36'…Continue

Started this discussion. Last reply by Robert Hughes Feb 7, 2014.

Gifts Received

Gift

Raf has not received any gifts yet

Give a Gift

 

Raf's Page

Latest Activity

Edward Wolfe replied to Raf's discussion structural concern in the group TIKI 30
"HaHaHa....Reminds me of what you get when you ask 10 economists what the market is going to do and you'll get 12 answers:) But seriously not all ocean miles are alike, hence my statement. Take care. Edward"
Feb 15, 2014
wakataitea replied to Raf's discussion structural concern in the group TIKI 30
Feb 14, 2014
Edward Wolfe replied to Raf's discussion structural concern in the group TIKI 30
"Hi Ralf, Unless the builder/designer was a fully certified naval architect or at least a designer with decades of successful designs roaming the worlds oceans, I would steer clear of anything this far from plan. OR I was as qualified as the…"
Feb 13, 2014
Robert Hughes replied to Raf's discussion Beam connection
"I tend to agree with Galway Bay here.  The key is to have a controlled amount of flexibility.  If you want to make a structure rigid you have to design it rigid and accept the weight penalties.  If you just stiffen one bit you tend to…"
Feb 7, 2014
Galway Bay replied to Raf's discussion Beam connection
"Patrick -  I mostly agree. Even if those Pacific craft were bolted together the arms made of tree branches would flex. However the degree of accuracy needed for rigid construction is probably not appropriate to home - building. It can be done…"
Feb 7, 2014
Chris Samoisy left a comment for Raf
"you are looking for a wharram around 36ft. would be a narai mk4 be an option aswell? this one I know well and she is built not heavier than the original plywood one. I know the one who built her in SA. a nice strong boat, very seaworhty in my view.…"
Oct 10, 2013
Raf replied to Geminidawn's discussion Lightning-Are you Protected?
"Here s someone who has writen about a personal experiance of being struck by lightning.  http://www.catamaransite.com/lightning.html"
Oct 9, 2013
Raf replied to wakataitea's discussion aluminium "wharram" catamaran
"Skegs aren't there? The stern is higher and the bow goes in deeper, this is a recipe for a boat that will broach easily and will demand a lot of rudder work to keep in coarse. (broaching is the tendency of a boat to slide away from the wanted…"
Oct 8, 2013
Raf replied to wakataitea's discussion aluminium "wharram" catamaran
"Thanks Chris for the very valuable specs. Some points to consider: 1) Why choosing U section for the beams?  Full round section gives higher strength for the same material and therefore, lighter and cheaper. 2) Lifting the stern,…"
Oct 7, 2013
Raf replied to wakataitea's discussion aluminium "wharram" catamaran
"I like the cabin. No nonsense, however, to my feelings is missing the simmetry. The boat is definitely a Wharram looking, why not sticking with a certified design? Custom design tend to have lesser resale value and the structural strength remains…"
Oct 5, 2013
Raf replied to paul anderson's discussion hulls,what paint?
"A difficult one. I've tried floor paint on hull and wasn't impressed, not the brand you mention though. I tried epoxy paint and not pleased as it went cholky in a short time. Lets keep in mind the conditions in the tropics are harsh. Paint…"
Sep 27, 2013
Raf replied to Geminidawn's discussion Lightning-Are you Protected?
"talking to many seasoned seafarers and all seems to agree, the chance of being struck at sea is minimum. Perhaps because a vessel at sea is actually a hurdle rather than a conductor for the bolt to reach the water. Those very few incidents known in…"
Sep 19, 2013
Raf replied to Geminidawn's discussion Lightning-Are you Protected?
"I've looked at this matter closely, as north Queensland is lightning prone over the cyclone season. My finding wasn't reliable nor incoregging. Some say, while a "grounded" boat might have some protection, it inevitably…"
Sep 14, 2013
Raf replied to reg's discussion Day dreaming again.....Atlantic crossing
"Whats all this business about naked women weighting for the yachties on the beach? No one has ever mentioned that, as a reward after an ocean crossing. It happens though, admittedly not often but, some time it happens. A few times I drop the pick in…"
Sep 9, 2013
Raf replied to Innes Hutton's discussion Converting 9 metre wharram to bridgedeck cabin
"1.8 meter height cabin the the full length and width of  the hulls? It will not longer be a sailing catamaran. Will look like a humpy and the reselling value will be next to nothing. Might as well build a raft with 44 gallon drums and build a…"
Sep 9, 2013
Raf replied to reg's discussion Day dreaming again.....Atlantic crossing
"and: 500 days at sea. By Serge Testa. The smallest boat around the World. I think it was 14'  "
Sep 4, 2013

Profile Information

I am:
I want a Wharram
What boat (s) are you building or do you own?
have a sailing monohull 42' ferrocement since 20 years.
Country, City, and State?
Australia Ravenshoe Queensland
About me or us?
love sailing and doing for 35 years.
Looking to?
want a Wharram catamaran 30'/36'

Comment Wall (2 comments)

At 9:31am on August 4, 2013, Andrew Korobov said…

Who is David Blau? How I contact him?

At 1:51am on October 10, 2013, Chris Samoisy said…

you are looking for a wharram around 36ft. would be a narai mk4 be an option aswell? this one I know well and she is built not heavier than the original plywood one. I know the one who built her in SA. a nice strong boat, very seaworhty in my view. look under www.raiatea-yacht.com   there you will find her advertised. jst nneds to be sailed to australia. I think the price can be put further down quite a lot. she s up for sale since about 3 years.

You need to be a member of Wharram Builders and Friends to add comments!

Join Wharram Builders and Friends

 
 
 

© 2017   Created by Budget Boater.   Powered by

Badges  |  Report an Issue  |  Terms of Service