Principles of Yacht Design, third edition

Discussion in 'Boat Design' started by verbertus, Sep 15, 2007.

  1. verbertus
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    verbertus Junior Member

    Hi all,

    I have the first and second editions of this book.
    Does anyone know if there are enough differences between the second and third edition of this Larrson/Eliasson book to justify purchasing the new edition?

    Thanks!
     
  2. marshmat
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    marshmat Senior Member

    I have the third edition and like it. I haven't read the second edition.
    From the preface to the book, I gather the main changes between 2 and 3 are:
    - New hydrodynamic formulae based on Delft research data
    - Additional seaworthiness information including implementation of ISO 12217-2
    - Revised scantling guidelines to include latest from ISO/TC 188/WG 18
     
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  3. Guillermo
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    Guillermo Ingeniero Naval

    Thanks, Matt.
    I have second edition too, verbertus, thanks for bringing up the matter.

    I've only found this, searching internet:
    "This handsome new edition of this yacht design reference for boat owners, designers and builders is updated throughout---particularly the calculations of hull and deck thicknesses, or scantlings---and is now printed in two-color throughout for maximum impact and usability of its many elegant illustrations."

    Cheers
     
  4. Guillermo
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    Guillermo Ingeniero Naval

    I've asked Rolf Eliasson and here his answer:
    ".....The greatest differences are in chapter 14, scantlings, since the proposed ISO standard has changed significantly between the editions."
    Cheers.
     
  5. verbertus
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    verbertus Junior Member

    Matt and Guillermo,

    Thanks for your most useful answers!
    Have a nice Sunday,

    Bert
     
  6. Guillermo
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    Guillermo Ingeniero Naval

    Something else from Rolf Eliasson:

    "The main formula for stix is changed somewhat: STIX = (7+2,25*LBS)*(FDL*FBD*FKR*FIR*FDS*FDF)^0,5 + delta.
    To be correct chapters 4 and 5 (Hull, keel and rudder design) are expanded and brought up to date. So, all things considered, I think it would be a good idea for you to get the new edition.
    Cheers
    Rolf E"
     
  7. verbertus
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    verbertus Junior Member

    Hi Guillermo,

    Interesting! So, this means the Wind Moment Factor (FWM) is no longer used in the formula? ( I'm using your spreadsheet, release 4, because it's much better than the one I made ;) , and I just compared the new main formula to that spreadsheet)

    Best regards,
     

  8. Guillermo
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    Guillermo Ingeniero Naval

    Oops! You're right, it's missing! :eek:
    But FWM is still used, of course. I think it's only a typing mistake from Rolf.
    Cheers.
     
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