powering calculation

Discussion in 'All Things Boats & Boating' started by sandeep, Jan 27, 2010.

  1. sandeep
    Joined: Jan 2010
    Posts: 3
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: india

    sandeep Sandeep

    Hi,
    I have designed a boat L=8.5m B=2m D=1.1m and i don't know how to do the powering calculation.Can I get some data regarding this
     
    sandeep, Jan 27, 2010
    #1
  2. CDK
    Joined: Aug 2007
    Posts: 3,324
    Likes: 148, Points: 63, Legacy Rep: 1819
    Location: Adriatic sea

    CDK retired engineer

    You have probably designed a cast iron narrow-boat.
    I fully understand that you encountered power calculation difficulties.
     
    CDK, Jan 27, 2010
    #2
  3. gonzo
    Joined: Aug 2002
    Posts: 16,809
    Likes: 1,722, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    A local unemployed man with a paddle can power your boat.
     
    gonzo, Jan 27, 2010
    #3
  4. apex1

    apex1 Guest

    Gonzo,

    there are no unemployed in India.
     
    apex1, Jan 27, 2010
    #4
  5. gonzo
    Joined: Aug 2002
    Posts: 16,809
    Likes: 1,722, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    They are busy designing boats.
    Sandeep: What is the purpose of the design?
     
    gonzo, Jan 27, 2010
    #5
  6. Ike
    Joined: Apr 2006
    Posts: 2,682
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    Location: Washington

    Ike Senior Member

    do we get to see this boat?
     
    Ike, Jan 29, 2010
    #6

  8. aranda1984
    Joined: Jan 2010
    Posts: 62
    Likes: 8, Points: 0, Legacy Rep: 101
    Location: Vancouver, B.C.

    aranda1984 aranda1984

    Putting a shape to paper, does not make it a design.

    It is just a sketch. It is a dream at best...

    Put it on the water, will it float or will it sink?

    In between those two stages you have to do either calculations, or some very educated guesses that are based on practical experience!

    The type and the shape of the hull, the displacement and the planned speed etc.. and many more factors will determine the power requirements.
    (There are way too many variables to list here that will effect the power requirements.)

    Basically any power plant will make the boat move. The questions are: will it go at hull speed? Will it rise out of the water and glide over the top? Or will it generate only waves (like a giant tug boat) that will wash the shores a mile away?

    ...If I were in your shoes, I would go to a marina where they have lots of boats about the same size and shape as yours.

    I would check out what they have for power!

    That is a good starting point for an amateur boat builder!

    Good luck, you'll be needing it.
     
    aranda1984, Jan 31, 2010
    #7
    1 person likes this.
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