Trimaran with accomodation in the amas

Discussion in 'Multihulls' started by eiasu, Nov 23, 2012.

  1. rberrey
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    rberrey Senior Member

    You could ask Pedigree Cat if they can stretch the horstman %1o , that would put it in your 72' range. When looking at length to displacement on those tris you also have to look at sq ft, take the added space into account.
     
  2. rberrey
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    rberrey Senior Member

    I ment to say stretch the Horstman 65' by %10.
     
  3. eiasu
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    eiasu Junior Member

    rberrey,
    I would like to meet the guy of Pedigree Cat in person,
    he was very kind and answered my requests with very long
    and precise emails with many many infos.

    Coming back to the subject of the accomodations in the ama,
    I would like to understand if they are unconfortable
    only on very wide trimarans, or maybe it is possibile
    to have more stable and confortable accomodations in the ama
    when the tri is designed with the ama's both on water all the time.
    I was just wondering looking at the tri linked by Richard Woods:
    with accomodations in the ama's
    http://www.sailpromenade.com/images/brochure.pdf

    I really would be surprised if somebody is ready to pay this:
    "Casually Crewed: Our rate for these is $13,900 for 7 nights"

    and the guests in the cabins in the ama's are constantly shaking and
    slamming ....

    thank you very much
    ciao
    eiasu
     

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  4. rberrey
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    rberrey Senior Member

    Or spend the big bucks it takes to build one. She looks sleaker than a tri-star. Rick
     
  5. Alex.A
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    Alex.A Senior Member

    Day sailing, while anchoring in picturesque and sheltered bays.....is going to produce less slamming than an extended cruise or ocean crossing? Ie in all weather.
    Picture also, a wave going diagonally across the boat - AMA lifts, followed by the main hull and as the second AMA is lifting, the first is going down again. The bigger the wave, the more extreme the amount of lift and drop.
    Think child's see-saw.... Nice, when the motion is smoothe and not too high or fast. Not so nice when done high and fast - and a nice lift off the seat at the top and a butt thump at the bottom.
     
  6. eiasu
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    eiasu Junior Member

    Thank you,
    this picture I can perfectley understand
     
  7. Richard Woods
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    Richard Woods Woods Designs

    That's basically what I said/implied in post 7, sorry I should have elaborated. Charterboats tend not to sail at night. Skippered charterboats tend to arrange their sailing trips to avoid rough weather or beating. Remember "charterers never go to windward"

    I'm not sure how many boats Pedigree Cats have actually built. Their Shuttleworth 52 is unfinished, according to adverts is owned by the builders wife and has been for sale for some time.

    http://dallas.craigslist.org/mdf/boa/3552041023.html

    They are also selling off materials on craiglist. I think this is them

    http://seattle.craigslist.org/see/bod/3556672122.html

    Richard Woods of Woods Designs

    www.sailingcatamarans.com
     
    Last edited: Feb 3, 2013
  8. rberrey
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    rberrey Senior Member

    I emailed Pedigree a time or two and , I cant remember the man's name but he answered my questions regaurding the tri-star designs. His web site has 1975 listed as the year they started building boats, and has a video of a large catamaran being built. When I emailed him I got the impression they only built large boats. I might check and see what he is selling that I can ues. Bad times might have caught up , its ashame. Rick
     
  9. eiasu
    Joined: Nov 2011
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    eiasu Junior Member

    From Pedigree i received kind informations from :
    Gary Habersetzer
    Vice President
    he has been very clear in his long emails.

    With this very bad number for lenght/displacement
    is the tristar80 in the category of motorsailer
    or it is able to sail also with light winds without engines?

    Ok thank you Richard,
    now it's becoming more clear, sorry that I'm so unexperienced that I need so many detailed messages ;)

    So for what I understand now in large trimarans with accommodations in the ama,
    I can use the cabins in the ama only at the anchor or in very calm seas,
    I can imagine that the cabins in the main hull should be much more comfortable
    and can be used also in the Ocean crossings.

    The question that arise now is if a trimaran (or a catamaran) that large can be
    easily and safely anchor with big seas? (for example when there is no space in the marina - not a rare not a rare phenomenon in the mediterranean sea)

    thank you very much
    tchüss
    eiasu
     
  10. Richard Woods
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    Richard Woods Woods Designs

    Of course it will sail, whether it is fast enough for you only you can say. Personally I'd put it in the motor sailer class

    Anchoring should be no problem. Backing into a Med berth with a 35-40ft wide boat might be challenging assuming you can find room and can afford it

    Richard Woods of Woods Designs

    www.sailingcatamarans.com
     
  11. cavalier mk2
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    cavalier mk2 Senior Member

    Actually many of the old Nicol 45 Voyagers, large Cross' tris and Horstmans did/do use the ama cabins at sea. I've talked with many people who sailed on them over the years. For an account of someone offering charters on a Cross 46 with wingdeck/ama cabins read Jerry Heutink's book "A Trimaran Sails the Seven Seas". They often ran long passage and offshore charters. The key, again, is not having excessive beam.
     
  12. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Would you comment further on this teeter-totter effect? I can see how a steep approaching wave could lift the windward ama, but I would think that the heeling pressure from the sails would keep the leeward ama in the water all the time, minimizing slamming. But I've never been on a large trimaran in big seas...

    And how does this slamming vary between racing tris with large dihedral between ama-vaka-ama, vs cruising tris with less dihedral?
     
  13. Richard Woods
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    Richard Woods Woods Designs

    Whenever I post on this thread I keep in mind the fact that the OP wants a performance boat over 60 ft long. All his early posts said that. I think he has still to define what he means by performance, especially to windward, maybe he just means cruising monohull speeds, I don't know

    But here is a performance 60ft trimaran sailing in rough seas, just to give you an idea.

    http://www.youtube.com/watch?v=GJ8vd9p8fDU

    And if you dare to watch Waterworld again you'll see several shots where Costner's trimaran is windward-outrigger-slamming in quite moderate seas

    Just search youtube for "rough seas trimaran" for more

    Richard Woods of Woods Designs

    www.sailingcatamarans.com
     
  14. Alex.A
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    Alex.A Senior Member

    It was an extreme example, just to give the idea of slamming.
     

  15. tomas
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    tomas Senior Member

    Watching that video would tell me that I would never want to be in either ama at all because I would have to be strapped in just to counter the swing from strong positive to negative accelerations.

    To me, this video an argument for a catamaran over a trimaran.
    Please enlighten me if I'm wrong.

    (Sorry, maybe this will derail the thread into cat vs tri)
     
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