Historical multihulls

Discussion in 'Multihulls' started by Gary Baigent, Feb 26, 2012.

  1. upchurchmr
    Joined: Feb 2011
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    upchurchmr Senior Member

    Richard,

    Thanks for the story on Gulfstreamer. I never realized that the boat had low bouyancy amas. Or perhaps it has lot more equipment than it was designed for. I've never been a fan of low bouyancy but perhaps this will change my mind.

     
  2. El_Guero

    El_Guero Previous Member

    Richard,

    Would a lack of buoyancy in the amas help or hurt? In this kind of situation, or in most situations you are aware of?

    Thank you,

    wayne
     
  3. oldsailor7
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    oldsailor7 Senior Member

    We never called them "low buoyancy floats" , but rather "Wave piercing floats". We found they worked very well in rough seas on Dave Greens Kraken 40 "Ringo" for instance.
    However it was very hard on the structure and this was demonstrated with the implosion of the float bow on the Kraken 40 "Mana Moana".
    For anyone considering lengthening the floats forward on a Bucc 24 it might be good idea to install an extra stringer forward of the front cross beam. ;)
     
  4. El_Guero

    El_Guero Previous Member

    "low buoyancy floats floats" and "Wave piercing floats" are these the same? Or, are they two different designs that are sometimes used together?

    I read wave piercing as more narrow. And I read low buoyancy as designed to not float .... And sometimes these are used together.

    Am I reading these right, or am I confused and they are the same thing?
     
  5. oldsailor7
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    oldsailor7 Senior Member

    Quote.---or am I confused and they are the same thing? Quote.

    Yes.----Sorry for the duplication. :confused:

    To be wave piercing they have to be low buoyancy, otherwise there would be a
    horrible upward surge as the fuller buoyancy entered the wave after the slim bow penetration,
    resulting in excess loading of the structure, not to mention the discomfort to the crew.
    Read Crowthers article "A message to the cruising man"
     
  6. oldsailor7
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    oldsailor7 Senior Member

    I am going to see if I can find some pics of the construction of "Bagatelle".
    She blasted everything in her way ----until she met that reef. :eek:
     
  7. Graham Murray
    Joined: Oct 2004
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    Graham Murray Junior Member

    Rogue Wave

    Does anyone know where RW is now ? I'll be spending a bit of time
    in Dubai next year,it would be fun to find RW. I'm not certain of the location of these pics,somwhere in the UAE I think.

    Cheers.
     

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  8. oldsailor7
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    oldsailor7 Senior Member

    Richard usually goes down to the Bahamas for the Canadian winter, but I don't know if he has done this year.
     
  9. warwick
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    warwick Senior Member

    Graham do you mean Rogue wave or Richard Woods?
     
  10. redreuben
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    redreuben redreuben

    OS, I was thinking something like this would be the go,
     

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  11. Graham Murray
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    Graham Murray Junior Member

    Sorry for the confusion Warwick, my laziness does make it look like I'm asking for Richard's whereabouts
    but I'm actually after Rogue Wave.

    Cheers.
     
  12. warwick
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    warwick Senior Member

    Thats ok Graham, I was just trying to clear up the question for my self and others.
     
  13. eyschulman
    Joined: Jul 2011
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    eyschulman Senior Member

    Did anyone mention the 26ft micro Magic Hemple a Dragonfly tri built and designed by Quorning Boats of Denmark. Built in 1985. She was reported to be timed at 25.4K and worn a heavey weather Round Britain race. For ten years I owned a modified Dragonfly very similar to MH and it was a very sweet tri fast stable and very responsive. Foot for foot the best sailboat I have ever sailed.I concur with Michael Waters who owned MH for some time and labeled her his all time favorite boat. Ed.
     
  14. HydroNick
    Joined: Apr 2010
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    HydroNick Nick S

    I think which catamaran is being discussed, Tennant Catamaran and the one off Maui have become mixed! Thanks for the responses on the one off Maui
     
    Last edited: Dec 26, 2012

  15. jamez
    Joined: Feb 2007
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    jamez Senior Member

    Does your DF have Kurt Hughes designed floats too?

    http://multihulldesigns.com/designs_other/sp_dragonflyamas.htm
     
    Last edited: Dec 25, 2012
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