Trimaran design help needed 40' LOA

Discussion in 'Services & Employment' started by eightwgt, Apr 19, 2003.

  1. eightwgt
    Joined: Apr 2003
    Posts: 22
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: FLORIDA

    eightwgt Junior Member

    I am looking for help for a power trimaran of the ILAN type hull.
    Design Criteria :

    40' LOA
    Shallow draft
    Low resistance hull
    Narrow overall beam
    outboard powered (for shoal draft situations / beaching)
    Cold molded construction
    Sleeps 4-6 (yes I know it will be tight)

    Please email me at eightwgt@aol.com

    Tom
     
  2. Eric Sponberg
    Joined: Dec 2001
    Posts: 2,002
    Likes: 205, Points: 73, Legacy Rep: 2917
    Location: On board Corroboree

    Eric Sponberg Senior Member

    Tom,

    What type of help do you need? Are you designing this boat yourself, or do you want someone to design it for you? Are you looking for a custom design or a stock design?

    Eric Sponberg
     
  3. eightwgt
    Joined: Apr 2003
    Posts: 22
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: FLORIDA

    eightwgt Junior Member

    Eric

    I want help, or someone to design. I am a capable designer, and have maxsurf and autocad however I have no experiance with this type vessel

    Tom
     
  4. Guest

    Guest Guest

    Why a power trimaran?

    Most objects like this are cats.

    A power tri is generally a narrow hull with "training wheels" and there has to be some very special circumstances for this configuration to be optimum.
    Usually the short side hulls produce more drag than if they were in an equivalent single side hull, because they are at a higher Froude number.
    You may want to look at some papers from ASNE or the various "Fast" symposia. Doctors has a good one in Fast '99 or 2001 on the number of hulls debate.
    There is also a very big book resently published on multihulls by a group of Russians. It is fairly expensive, but quite complete.
     
  5. eightwgt
    Joined: Apr 2003
    Posts: 22
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: FLORIDA

    eightwgt Junior Member

    Well since posting I have decided on a cat for many reasons. I am trying to find a design that may easily be converted to a power cruiserthat could be powered with 2 50 Hp 4 stroke outboards and get a cruisinf speed of about 12-15 knots
    ANY suggestions ??
     
  6. Guardian
    Joined: Apr 2004
    Posts: 5
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Sarasota, Florida

    Guardian Junior Member

    Quote"There is also a very big book resently published on multihulls by a group of Russians. It is fairly expensive, but quite complete." /Quote Do tell what is the name of this book ? and where can I/ we get it ?


    Thanks,
    -Mike
     

  7. Leo Lazauskas
    Joined: Jan 2002
    Posts: 2,696
    Likes: 146, Points: 63, Legacy Rep: 2229
    Location: Adelaide, South Australia

    Leo Lazauskas Senior Member

    The program "Michlet" will allow you to get some estimates of (calm-water) resistance of trimarans. See:

    www.cyberiad.net/michlet.htm

    Michlet will also allow you to optimise for drag (and for other factors).

    All the best,
    Leo.
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.