Help! (Cross Curve calculations)

Discussion in 'Stability' started by manishindian979, Feb 25, 2012.

  1. manishindian979
    Joined: Feb 2012
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    Location: Kochi, India

    manishindian979 Junior Member

    I am new in Naval Architecture. Can anyone guide me for Cross Curve calculations please??????:)
     
  2. Ad Hoc
    Joined: Oct 2008
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    Ad Hoc Naval Architect

    Basic Ship Theory Volume 1, or Principals of Naval Architecture.

    Either will suffice. Happy reading :cool:
     
  3. manishindian979
    Joined: Feb 2012
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    Location: Kochi, India

    manishindian979 Junior Member

    Thank you very much Ad........:cool: But i want to know the full procedure for these calculations which is not there in both of them.......:confused:
     
  4. Ad Hoc
    Joined: Oct 2008
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    Location: Japan

    Ad Hoc Naval Architect

    M..979

    If you read the text, it is there. If you don't understand from the text, the the task ahead of you, then it is beyond your ability and either seek professional help or just give the job to a professional.
     
  5. chandru447

    chandru447 Previous Member

    for cross curves of stability, it is quite difficult to do by hand... u need some addnl graph to do tat...
     
  6. johneck
    Joined: Nov 2011
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    johneck Senior Member

    Thank goodness for computers! This is essentially an integration of the submerged volume of the vessel for range of displacement and heel angles. Since the ship is symmetric it only needs to heeled to one side, that saves half the required calculations.
     
  7. chandru447

    chandru447 Previous Member

    ya johnneck you are correct, but how will you get the point of rotation above 15deg angle of heel.
     
  8. johneck
    Joined: Nov 2011
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    Location: New England

    johneck Senior Member

    You need to assume a VCG location and use that as the reference. In many cases it is convenient to use the BL.
     
  9. chandru447

    chandru447 Previous Member

    i have did considering the BL as a reference, but it wont give you the correct value...

    I have did those calculation manually during college days and i have got very odd values above 20 deg
     

  10. chandru447

    chandru447 Previous Member

    hi i got manual xcel sheet where you can learn and find.. if u like it contact me at chandru447@gmail.com
     
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