Special Service Craft Rule

Discussion in 'Class Societies' started by amateur mariner, Aug 28, 2009.

  1. amateur mariner
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    amateur mariner Junior Member

    Can somebody give me special service craft rules for the design of structure of these types of vessels?
     
    amateur mariner, Aug 28, 2009
    #1
  2. Guillermo
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    Guillermo Ingeniero Naval

    Guillermo, Aug 29, 2009
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  3. valber
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    valber Naval Architect

    GL Rules & Guidelines 2009

    Try this link or this...
    GL Rules & Guidelines 2009, I - Ship Technology, Part 3 - Special Craft
     
    valber, Sep 1, 2009
    #3
  4. Guillermo
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    Guillermo Ingeniero Naval

    Guillermo, Sep 2, 2009
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  5. valber
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    valber Naval Architect

    Guillermo
    For all we must pay... I think amateur mariner find it in his life... But something must be free - Safety on the seas...
    amatuer mariner
    You precisely have not specified what type of craft in of your interests... There can be it a really special craft...
    May be Guillermo is right - buy LR Rules & Regulations for the Classification of Special Service Craft 2009 Full Set, Some questions will leave yourself...
    Sorry for my english...
    -----------------
    For interested in retro yacht designing -> http://www.nmsc.gov.au/media/pages_...chts_and_Small_Crafts_Part_1,_May_1979(1).pdf and http://www.nmsc.gov.au/media/pages_..._Yachts_and_Small_Crafts_Part_2,_May_1979.pdf
     
    Last edited: Sep 9, 2009
    valber, Sep 3, 2009
    #5
  6. amateur mariner
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    amateur mariner Junior Member

    i have read that rules tell us how to predict the design life of a vessel.Does anybody know that can we predict the fatigue life of high speed grp crafts?
     
    amateur mariner, Sep 9, 2009
    #6
  7. Ad Hoc
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    Ad Hoc Naval Architect

    a.m.
    with a lot of analysis and testing....there is not a significant amount of fatigue data of composites available.
     
    Ad Hoc, Sep 9, 2009
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  8. amateur mariner
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    amateur mariner Junior Member

    at some places i do find some curves.but i dont understand how to exactly use them.somewhere i read that rules do tedll us abt fatigue life.Can you help me out from this problem
     
    amateur mariner, Sep 10, 2009
    #8

  10. Ad Hoc
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    Ad Hoc Naval Architect

    a.m.

    If you're unsure what the curves are and how to use them etc, then you have along way to go. Fatigue is not simply...oh look an SN curve, how many cycles will it experience....and oh look..there the stress level at said cycles. Fatigue cannot be reduced to a one liner as such. Fatigue is a very complex mechanism. In composites even more so. There are so many variables that must be understood and the data you use, SN curves, need to be fully understood what they represent and do they represent what you want and then the fabrication side etc etc etc...i suggest that you read a good composite book how manufacturing influences the perfect as "designed strength"...what should be taken into account, and that is just the static strength!! Then read some other good text books on fatigue and then, if possible conduct a few simple experiments yourself.

    Once you have done the above....you may slowly begin to grasp the complexity of your simple question.
     
    Ad Hoc, Sep 10, 2009
    #9
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