i need a set of plans for a cruising hull for a 18 foot catamaran

Discussion in 'Multihulls' started by shmuelbrody, May 12, 2013.

  1. shmuelbrody
    Joined: May 2013
    Posts: 15
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    Location: israel

    shmuelbrody Junior Member

    i am interested in performance
    absolutely not in speed
    i do not race
    and i dont care that people say
    wow that was fast
    im more interested in a boat that i can put
    4-6 people on and go some place nicely
    and get back
    my personal family is 9
    and my family including children
    and grand children is about 20
    really what i want is a nice sailing house boat
    that is not tubby
    and needs a motor
    and that i can build and sail b4 i die
    shalom
    looking to hear from you soon
    shmuel
     
  2. rwatson
    Joined: Aug 2007
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    Location: Tasmania,Australia

    rwatson Senior Member

    dear oh dear. A sailing house boat by definition will be tubby. Ask Archimedes.

    Oh, and what exactly is your financial situation ? You spent a lot of time describing your poverty, the difficulty of boat registration etc. then dismissed that with mention of other financial help, and t here has been no mention of 'car toppable' again. have you changed that parameter too ?.

    You have several useful designs at hand already. There will be no magical method to achieve anything better.
     
  3. shmuelbrody
    Joined: May 2013
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    Location: israel

    shmuelbrody Junior Member

    i have not changed at all
    at first i said 18 ft
    full deck
    lots of flotation
    break down to 8 foot trailer
    torsion boxes
    and a cage covered with building wrap
    i stick to that
    but speaking to you guys things get turned around
    i got offered boats that are tris
    that obviously cannot be dismantled
    shown slider
    whos floats i think i can use
    but i will have to build with bulkhead and cut into pieces
    then bolt together to sail
    i said i wanted it high off the water to be dry
    and right now i dont know about the power source
    i liked the junk sails
    i like the crab claw
    now i am very interested in wave power
    im going to put a wave power machine on my
    12 foot row boat and see how it works
    it is true that my son is paying for most of the boat building
    and he does not make a lot of money

    i hear things like performance
    speed
    disappointed

    these words mean little
    if i heard 5 knots
    turning distances
    rocking angles
    etc
    i would be more impressed

    but as it is
    i will first build a small model of my ideas
    with some modification as indicated by you
    the i will build a 6 x 12 small boat and she how she runs
    then i will make modifications
    and then i will build the full size 8 x 18

    as for slider
    i like her hells
    and she is the answer to my ?
    as to hull design
    do you thinks that woods hull with cabin in any way
    answers the questions that i asked
    most of the people who gave me suggestion
    never read my specs
    if they did they would not have said what they did

    i have not seen any real clever solution
    or creative thinking

    just take a look at this boat that in no way solves my problem
    i mentioned different kind of sails
    and no one ever discussed them

    i have not changed
    but when i try to answer your questions that are
    not relevant to what i need
    i get told t hat i keep changing

    you were the one who told others to look at my original letter
    from what i wrote it should have been obvious that
    i wanted a family boat that would take a lot of people and
    cruise
    what happened to all of you guys
    i have not changed
    you didnt pay attention
    but
    i appreciate the effort
    and am waiting to see some creative thinking
    and unique solutions
     
  4. Richard Woods
    Joined: Jun 2006
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    Location: Back full time in the UK

    Richard Woods Woods Designs

    sounds like another john5346
     
  5. shmuelbrody
    Joined: May 2013
    Posts: 15
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    Location: israel

    shmuelbrody Junior Member

    mr woods
    thats a really nasty thing to say
    i didnt like your boar
    so you slander me
    not nice

    if thats the way that people on this forum feel
    i can leave
     
  6. redreuben
    Joined: Jan 2009
    Posts: 1,754
    Likes: 106, Points: 63, Legacy Rep: 349
    Location: South Lake Western Australia

    redreuben redreuben

    "and am waiting to see some creative thinking
    and unique solutions"
    snmuelbrody;
    This is not our job, we are not here to do your design for you, we have given you some ideas and opinion, the rest is up to you.
     
  7. catsketcher
    Joined: Mar 2006
    Posts: 1,304
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    Location: Australia

    catsketcher Senior Member

    Schmuel

    No one here sets out to be mean, its just that Slider is suited to about 200kg payload. Too much more and she won't sail as well. You want ten times this payload on the same waterline. The consistent message here is that it can't be done properly. We could make two hulls tied together that can support 2000kg without sinking but they wouldn't sail at all and the stability would be very low as the heavy people are up high on the structure. It would be dangerous.

    Why not try a small secondhand mono? A nice Contessa 26 or something could be gotten cheap and you can pack a few people on it.

    cheers

    Phil
     
  8. rwatson
    Joined: Aug 2007
    Posts: 5,866
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    Location: Tasmania,Australia

    rwatson Senior Member

    Thats a change.

    Thats a change - but you still dont state how much you can afford.



    Then we start with the vague objectives

    "4-6 people on and go some place nicely and get back"

    what is "some place" ? Open water, sheltered water, how far ?

    "really what i want is a nice sailing house boat that is not tubby"

    How is a sailing house not going to be tubby ?


    But not to worry, you seem to have it all under control, and we wouldnt want to misunderstand you so badly.

    Post a picture of your creation when its done.
     
  9. redreuben
    Joined: Jan 2009
    Posts: 1,754
    Likes: 106, Points: 63, Legacy Rep: 349
    Location: South Lake Western Australia

    redreuben redreuben

    Miss Cindy

    Maybe Miss Cindy will inspire you, google it, plenty of info.
     

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  10. catsketcher
    Joined: Mar 2006
    Posts: 1,304
    Likes: 144, Points: 63, Legacy Rep: 790
    Location: Australia

    catsketcher Senior Member

    Schmeul

    Here is something to think about. The weight you want to float - 2000kg - will need 10 fully submerged 44 gallon drums to float it (and that is not including the drums) Can you fit 5 drums in an 18ft length easily (for each hull)? That's why it is a hard ask.

    cheers

    Phil
     
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