Work Catamaran Hull Lines

Discussion in 'Multihulls' started by valter.f, Aug 17, 2014.

  1. valter.f
    Joined: Jun 2013
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    Location: brazil

    valter.f Junior Member


    Hi Steve,

    In these moments we ask help to "Saint Google"... :)

    Thanks for your gentle words....

    Valter
     
    Last edited: Aug 22, 2014
  2. valter.f
    Joined: Jun 2013
    Posts: 84
    Likes: 2, Points: 8, Legacy Rep: 32
    Location: brazil

    valter.f Junior Member

    Hi FMS,

    Only to answer your doubt:

    All I have are posted pictures. I no have plans or even lines.

    I found plans for a boats equal to this, but costing up to $ 30,000 and this amount I can build much of the boat.

    To build it I count on people who build great houses of wood or composites and I can trust to build the structure of the deck and cabin, but not the lines of the hull.

    With these lines and using methods such as strip-planking or even stitch and glue, if possible, I can build the two hulls and rely on the experience these people in structures
    to unite them with a good deck and cabin. Under the simple supervision a naval technician (not an engineer), they have built boats to carry up to 150 passengers.

    In my country, laws and taxes are too harsh for large shipyards, but if you builds what they term as "Handmade construction," can prove with pictures made during construction
    and meets safety standards, everything is simpler. They will only inspect the boat to determine the maximum number of persons or weight that you can carry. The fees are minimal
    for this type of vessel that is limited to 100 ft. Above that, only shipyards can build.

    Thereupon all I need are lines for a single hull exactly equal the image (demolded boat) and that is not multi, rond or soft, but "hard chine vee botton hull" and that, as I made clear in
    this post and other whose link was released here, I intend pay for it.

    Thanks for your attention, friend. When defining the project will bring you more details and would like to hear your opinions and of other friends about it before starting construction.

    Thanks,
    Valter.
     
  3. Mr Efficiency
    Joined: Oct 2010
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    Location: Australia

    Mr Efficiency Senior Member

    Seems to me the summation so far is if you have to carry a load of 7 tons at greater than 20 knots, you will need a boat somewhat larger than 30 feet, and you are getting into big $ territory, where cost of plans will be a small single digit % of the final cost.
     
  4. valter.f
    Joined: Jun 2013
    Posts: 84
    Likes: 2, Points: 8, Legacy Rep: 32
    Location: brazil

    valter.f Junior Member

    Hi Efficiency,

    It is not the model I want, and you are right to say that "the sauce may end up costing more expensive than the fish", but see that it is totally possible for a 30 ft catamaran carrying 7 tons in cruising speed of 20 kts.

    http://www.alnmaritec.co.uk/downloads/Wave%20Handler.pdf

    Thanks,
    Valter.
     
  5. Richard Woods
    Joined: Jun 2006
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    Location: Back full time in the UK

    Richard Woods Woods Designs

    We probably have different interpretations of the words "efficient" and "economic". I also note that the Lightship Displ is 7T, not the loaded displ. You want 7T loading capacity, which would make that model 14T disp, which would significantly change the top speed

    Richard Woods
     

  6. valter.f
    Joined: Jun 2013
    Posts: 84
    Likes: 2, Points: 8, Legacy Rep: 32
    Location: brazil

    valter.f Junior Member

    Richard,

    It is true that we disagree on some points of view, but you must be right. It is the expert here. Anyway, I completely abandoned this project and we should not waste our precious time with him.
    Let us for a new and that is not so limited in its margins for use and consumption.

    I appreciate much your support and Im sorry if I was rude at some point. This is not my standard of behavior.

    Thanks,
    Valter.
     
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