Calc Displacement

Discussion in 'Software' started by RumnCoke, Jun 1, 2017.

  1. RumnCoke
    Joined: Aug 2013
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    RumnCoke Junior Member

    I have a hull design in an .fbm format. I also have delft and freeship plus. I am a total newb and ignoramus when it comes to these programs. I am trying to find out how to calculate the static displacement of the hull sitting on its waterline, either metric or imperial.
    Any help?

    Thank you,
    RumnCoke
     
  2. wet feet
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    wet feet Senior Member

    I haven't dabbled with any version of Freeship newer than 2.6 so my reply may not be much use to your specific situation.In Freeship 2.6 there is a toolbar header labelled calculations and one of the items on the dropdown menu is design hydrostatics.If you click on this all sorts of information about your design will be displayed.
     
  3. RumnCoke
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    RumnCoke Junior Member

    @wet feet,,Thanks for the help sir. Yes, I was able to connect with that menu and in the upper half it shows the current file info on the hull. Down below it shows nothing as far as results. I am a little challenged at this point. This is a one meter RC racing yacht. I am wondering if the dimensions are too small to register on the program?
     
  4. wet feet
    Joined: Nov 2004
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    wet feet Senior Member

    The time difference between us may make this a protracted thread.I just created a one metre long hull using the default settings with the following output from the Design hydrostatics feature.

    Design length : 1.000 [m]

    Length over all : 1.000 [m]

    Design beam : 0.290 [m]

    Beam over all : 0.288 [m]

    Design draft : 0.040 [m]

    Midship location : 0.500 [m]

    Water density : 1.025 [t/m3]

    Appendage coefficient : 1.0000

    Volume properties:

    Displaced volume : 0.003 [m3]

    Displacement : 0.003 [tonnes]

    Total length of submerged body : 0.808 [m]

    Total beam of submerged body : 0.234 [m]

    Block coefficient : 0.4002

    Prismatic coefficient : 0.5301

    Vert. prismatic coefficient : 0.5780

    Wetted surface area : 0.144 [m2]

    Longitudinal center of buoyancy : 0.482 [m]

    Longitudinal center of buoyancy : -2.209 [%]

    Vertical center of buoyancy : 0.026 [m]


    Possibly not even remotely close to your particular hull,but it shows that the information can be extracted.Can you post a lines plan of your model?
     
  5. RumnCoke
    Joined: Aug 2013
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    RumnCoke Junior Member

    @wet feet,
    Yes, thank you for your interest. Here is the file for the stats. Any help appreciated.
     

  6. RumnCoke
    Joined: Aug 2013
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    RumnCoke Junior Member

    I was able to find displacement and convert to pounds and ounces. Thanks for your input.
    Displacement = 5.6 pounds.
     
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