Headroom in a mini transat, like - 22 footer...

Discussion in 'Boat Design' started by Sean Herron, May 8, 2004.

  1. Sean Herron
    Joined: May 2004
    Posts: 1,520
    Likes: 33, Points: 58, Legacy Rep: 417
    Location: Richmond, BC, CA.

    Sean Herron Senior Member

    Hello...

    I am laying out preliminary drawings of same in photoshop - over laying hull drawings developed in Prolines and would like some outside input - other than my golfer wife - as to just how crazy I am...

    New to forum - so need to post graphics - so you can all tell me how I seem to love the floating soap bubble...

    Anyone interested in seeing a preliminary profile and plan and lines PLEASE tell me how to best post same...

    This boat is a minimum skin ULDB - but with fixed asymetric bulb keels at 15 degrees of heel to LWL - (ie: 0 degrees at 15 and pulling to windward)...

    Same with rudders though they be typical symetrical slow NACA sections...

    I am a fast learner...

    Thanks in advance...

    SH.
     

    Attached Files:

    Last edited: May 8, 2004
  2. Portager
    Joined: May 2002
    Posts: 418
    Likes: 15, Points: 0, Legacy Rep: 325
    Location: Southern California

    Portager Senior Member

    I’d love to see your graphics.

    Start typing and then press "Go Advanced".

    Then there will be a "Manage Attachments" button.

    Click browse and select file.

    Here is a profile sketch of Portager curtsey of Michael Kasten.

    Regards;
    Mike Schooley
     

    Attached Files:

  3. SailDesign
    Joined: Jan 2003
    Posts: 1,964
    Likes: 197, Points: 73, Legacy Rep: 650
    Location: Jamestown, RI, USA

    SailDesign Old Phart! Stay upwind..

    The problem with trying to fit standing headroom in a 22-footer is that you end up with a tremendous amount of freeboard. Oh, sorry - you already discovered that! :)
    You also end up with a VERY small piece of flat sole, and may have problems getting enough depth to the floors to properly support the keel(s).
    Reall, all you need is decent sitting headroom, since the really isn't enough space to walk around anyway. Have you considered a "pop-top" arrangement?
    I have about 4' of "headroom" in my 19-footer (pic attached) and it's verging on the chubby already.
    Steve
     

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  4. Sean Herron
    Joined: May 2004
    Posts: 1,520
    Likes: 33, Points: 58, Legacy Rep: 417
    Location: Richmond, BC, CA.

    Sean Herron Senior Member

    Hello...

    I know these arguements to be true and as things stand what happened is I found a graphic of a Pogo 2 and thought a stretch and pull might be fun...

    It actually started as a 16 footer with sitting headroom which is another accomplishment - but cockpit to small - stretch same to an 18 footer and it looks good - not to mention that the 18 footer represents 25% less build materials than the bloated 22...

    Add to this the way I sail - long day hops on weekends and short joints on early afternoons going into sunset BBQ's - IN THE COCKPIT - the only time my wife or friends sleep on the boat is when we are so far gone as to not drive home - given these arguements and intended usage - the 18 seems to be the way to go - hell of a lot cheaper too...

    You might argue 'why so small' and well thats just a build cost and sychological commitment call - and on that note - the fat 22 truly intimidates both me and my bankers...

    Windward performance has always been a thorn in my side - when I was honeymooning in London I got a chance to sail a Red Fox Vision by www.selectyachts.co.uk - these things have asymetrical daggers and a bit of a keel and claw to windward in a ridiculous way - you point to a landfall and you end upwind of same...

    I intend to give twin small - bulb ballasted - 15 degree canted asymetrical foils a try in whatever I end up building - let them tuck up into the turn of the bilge - flip up rudder (s) - beach ability and trailering...

    Off I go...

    SH.
     

    Attached Files:

    Last edited: May 9, 2004
  5. Sean Herron
    Joined: May 2004
    Posts: 1,520
    Likes: 33, Points: 58, Legacy Rep: 417
    Location: Richmond, BC, CA.

    Sean Herron Senior Member

    Bah...

    I just dropped some waterlines into the 22 footer and it looks like there is enough of a sole to provide all the movement that would be needed, you are not going for a walk, you just want to stretch in the rain or stand upright while frying up some bacon and eggs - see, I don't even want a hatch, which bars the pop top per Edels or Thunderbirds - I just want a big hole with a barn door Lexan cover...

    Time to go 3D in Rhino I think...

    Thanks again...

    SH.
     

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