CSC 30 Catamaran- the coastal passage

Discussion in 'Multihulls' started by peterchech, Nov 29, 2011.

  1. UpOnStands
    Joined: Nov 2015
    Posts: 591
    Likes: 5, Points: 18, Legacy Rep: 16
    Location: Sydney

    UpOnStands Senior Member

    Umm, Richard Woods says "If I built another of my 28ft Gypsy designs, for example, I reckon I'd could still do it for well under USD21000."
    I think RW knows what he is talking about.
    That's why 30 foot is a good target for the home builder.
     
  2. silvah
    Joined: Jan 2017
    Posts: 18
    Likes: 0, Points: 1, Legacy Rep: 10
    Location: Crystal Falls, MI

    silvah Junior Member

    There are no 2x6's in the plan released by TCP. The issue of 2x6's was discussed earlier in this thread. The design, as published, uses 2x4's in a standard truss design to build the box for the beams, this alone is stronger than what holds up most homes. Then this whole box is then encased in ply and glassed over -- very strong. So again if you have something on this design, please share.

    Clearly you have some issue with Bob at TCP, referring to him as small minded, stupid, and ignorant. This forum/thread is no place for insults, if you have an issue with him take it private.
     
  3. Burger
    Joined: Sep 2017
    Posts: 4
    Likes: 0, Points: 1
    Location: Australia

    Burger New Member

    I have researched Richard Woods' 28' Gypsy extensively. An excellent minimalist design with proven ocean abilities.
    In Australia, $21K will get you to a painted lock-up shell, using good quality marine ply.
    That leaves rig, deck gear, sails, motor, fitout, anchors/chain etc. At least another $20K. Not including rent, launching costs, labour.
    However, you will end up with a proven design from a proven designer. At resale time you will be happy you did.
    Building/fitting out a CSC30 to the same standard will cost about the same, take the same hours.
    The sensible choice is pretty obvious........
     
  4. Burger
    Joined: Sep 2017
    Posts: 4
    Likes: 0, Points: 1
    Location: Australia

    Burger New Member

    Bob Oram is currently cruising around our area. He had a very interesting design concept for a 10m Slim, plywood build.
    Now that he's back in business I hope he revisits this concept.

    As for Bob Norson, a year or three ago TCP was full of stories from him hiding out overseas because he believed Australia/USA government agents were trying to kill him with chemical poisoning. I don't know if those pages are still there.
     
  5. jamez
    Joined: Feb 2007
    Posts: 459
    Likes: 19, Points: 18, Legacy Rep: 231
    Location: Auckland, New Zealand

    jamez Senior Member

    10 meter Slim sounds interesting. Any further info or pics you could post?
     
    Last edited: Sep 22, 2017
  6. Burger
    Joined: Sep 2017
    Posts: 4
    Likes: 0, Points: 1
    Location: Australia

    Burger New Member

    No pics. The concept was an affordable ply boat with the option of a headsail-only rig. Trademark Oram aft doubles, very basic galley/BBQ on deck, good cockpit and deck space, forward access from the bridgedeck. Simplicity and lightness being key.
    I don't think it was a finished plan, but it was the only Oram design I could hope to afford.
     
  7. limecc
    Joined: Feb 2017
    Posts: 3
    Likes: 0, Points: 1, Legacy Rep: 10
    Location: Notts UK

    limecc New Member

    Silvia thanks for your response. I'm not a Blue Water cruiser which is why I was looking at the CSC30 and Gemini in the first place.

    RedRuiben, Don't like Richard Woods designs but obviously ok for some.

    Sailhand, you make some good points but if I went for the CSC self build it would have twin outboard and no rigging. It wouldn't be 'unsafe'. Might have no resale value though..
     
  8. silvah
    Joined: Jan 2017
    Posts: 18
    Likes: 0, Points: 1, Legacy Rep: 10
    Location: Crystal Falls, MI

    silvah Junior Member

    So for those who are considering the CSC-30, and looking for some build documentation, I found something the might be a little helpful. I ran across some build videos of a 20 ft catamaran on YouTube and looking at the videos I thought to myself, "Hey that hull design looks like a sized down CSC-30", and sure enough, on his website he indicates that the design was in fact inspired by the CSC-30. It looks like he just downsized the hulls and used the same techniques to build them.. wrapping the ply around the bulkheads.

    Here is the link to the YouTube Videos (there is a series of them, so click through to YouTube):

    Here is the web site: Islander Catamaran | PuddleCat Catamarans http://rogermann.org/puddlecat/designs/ragwing-islander-catamaran/

    The design of this 20 footer is just odd in my opinion, I would not build it. It looks like a failed attempt to have big boat amenities in a small boat. The profile is atrocious! But as the for hulls, this is the same build process and design as the CSC-30.
     
  9. groper
    Joined: Jun 2011
    Posts: 2,428
    Likes: 87, Points: 58, Legacy Rep: 693
    Location: australia

    groper Senior Member

    When i built my boat i used a method of wrapping foam sandwich panels around the bulkheads. It worked well im terms of getting it together quickly but there was 1 problem in that the topsides panels "pulled" a little on some of the bulkeads which leaves them slightly unfair- a slight hump. These needed to be faired out afterwards unless you dont care so much for a perfect finish and dont mind seeing a wavy topsides panel- you will regret it once you paint it!
     
  10. Angélique
    Joined: Feb 2009
    Posts: 1,768
    Likes: 133, Points: 63, Legacy Rep: 1632
    Location: Belgium ⇄ The Netherlands

    Angélique aka Angel (only by name)

    Maybe give the topside panels a bit more stringer support at the bulkheads to prevent the humps there, with a few short extra stringers only at the bulkheads that give more radius to the topsides, fade out these short extra stringer ends to zero.

    From 3:46 to 5:44 in the below video Alan Stewart of B&B Yacht Designs addresses a hump in the topsides of a Core Sound 15 near the bow (not at the bulkheads), and tells how to prevent the humps there.

    Before the below video plays the screen picture shows where Alan is pointing at the hump in the sheer line ± halfway between the first bulkhead and the bow.

     
    Last edited: Sep 30, 2017
  11. silvah
    Joined: Jan 2017
    Posts: 18
    Likes: 0, Points: 1, Legacy Rep: 10
    Location: Crystal Falls, MI

    silvah Junior Member

    So a while back Bob N. from the Coastal Passage chimed in on this thread and threw out the possibility of building this design with foam. I know little about how foam relates to wood. So if one were to do this what foam would you replace the 9mm and 12mm wood with? I am assuming H80 is likely the answer, but what thicknesses? I am thinking you would need to go with something thicker?
     

  12. redreuben
    Joined: Jan 2009
    Posts: 1,502
    Likes: 35, Points: 48, Legacy Rep: 349
    Location: Beaconsfield Western Australia

    redreuben redreuben

    Is this any help ?
    Plywood/Glass strength Comparison http://multihullblog.com/2010/11/plywoodglass-strength-comparison/
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.