Seakeeping Criteria or Standards

Discussion in 'Hydrodynamics and Aerodynamics' started by abAndad, Aug 18, 2013.

  1. abAndad
    Joined: Jul 2013
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    abAndad Energetic Naval Architect

    Hi everybody,
    Does any have any Standard or Criteria or even Benchmark Seakeeping of Semi-Displacement Ships and High-Speed Crafts?
     
  2. Ad Hoc
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    Ad Hoc Naval Architect

    The most widely used is the ISO 2361-1:1997 and BS 6841(1987).
     
  3. abAndad
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    abAndad Energetic Naval Architect

    Thanks Sir, ISO 2361-1:1997 and BS 6841(1987) are only talk about "measurement and evaluation of human exposure to whole-body mechanical vibration and repeated shock". It is not sufficient for Seakeeping Performance Criterion ; This criterion covers 12 item which they are in the following image
    [​IMG]

    I've mailed you about semi-displacement body lines for three weeks ago, but my notifications were off and I didn't get its reply from you; if it is possible please send it again (if you have any response for it :))
     
  4. Ad Hoc
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    Ad Hoc Naval Architect

    Then perhaps you have not understood what is inside these standards. They provide a relationship between motion sickness and the amplitude and frequencies of vertical oscillation, giving an MSI, motion sickness incidence with varying limits of 30mins, 2hours, 8 hours exposure and so on.

    If you have not conducted any tank testing to evaluate the response (via RAOs) of your hull in varying sea spectrums, then you shall no idea what your hull will be like nor will you know whether it is suitable or not.
     

  5. abAndad
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    abAndad Energetic Naval Architect

    Yes, you are Right Ad Hoc :rolleyes:...Thanks a lot:):cool:
     
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