Speed coefficient

Discussion in 'Boat Design' started by chocomono, Jan 30, 2006.

  1. chocomono
    Joined: Jan 2006
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    chocomono Junior Member

    What is the meaning of the speed coefficient?
    Why is it used for designing planing hulls?
     
    chocomono, Jan 30, 2006
    #1
  2. TimClark
    Joined: Nov 2005
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    TimClark Senior Member

    Do you mean maximum hull speed?

    Tim
     
    TimClark, Jan 30, 2006
    #2
  3. chocomono
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    chocomono Junior Member

    Sorry, I though it was the name in English.

    Speed Coefficient =(V/(L)^1/2)

    When ship length is equal to wave length is 1,34

    The non dimensional number of this coefficient is Froude number
     
    chocomono, Jan 31, 2006
    #3
  4. Raggi_Thor
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    Raggi_Thor Nav.arch/Designer/Builder

    It's also called speed/length ratio.
    I agree it's not very interesting for planing hulls.
     
    Raggi_Thor, Feb 3, 2006
    #4

  6. jehardiman
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    jehardiman Senior Member

    Chocomono; ...There are several "speed coefficients". As Raggi says the one you quoted is not applicable to planing hulls. But others are others, such as the volumnmetric speed coefficient, see the Series 62/64 papers.
     
    jehardiman, Feb 3, 2006
    #5
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