FreeShip Hydrostatics Question

Discussion in 'Software' started by goolawah, Jun 24, 2006.

  1. goolawah
    Joined: Oct 2005
    Posts: 96
    Likes: 5, Points: 0, Legacy Rep: 67
    Location: Brisbane, Australia

    goolawah Junior Member

    I have been playing around with a design in FreeShip and wanted to calculate the total mass and centre of gravity. The values returned did not make sense so I recalculated in EXCEL and they still don't.

    I must be missing, or miscalculating something.


    So far he design is just a multi-chine dinghy LOA = 3.6 metres x BEAM = 1.2 metres.

    The developed panels are variously 4mm, 6mm, 9mm, 12mm, 19mm.
    I am using .55 Tonnes per cubic metre as the density of timber.

    The total density comes out to about .022 tonnes which I believe is 22kg. Not bad for a 3.6 metre boat!

    Can anyone spot what I am doing wrong?

    All feedback appreciated...
     

    Attached Files:

    goolawah, Jun 24, 2006
    #1
  2. Danimal
    Joined: Jun 2006
    Posts: 11
    Likes: 1, Points: 0, Legacy Rep: 11
    Location: Ireland

    Danimal Junior Member

    checked your calcs and i get the same - calc of areas and density would by my first re-check -

    but for a small dinghy and just the bare shell it doesn't seem to far off IMHO
     
    Danimal, Jun 27, 2006
    #2
    1 person likes this.
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