Dynamic Trim

Discussion in 'Stability' started by dina, Feb 14, 2012.

  1. dina
    Joined: Mar 2011
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    dina Junior Member

    HELLO
    I need standard For The Range OF DYNAMIC TRIM FOR PLANING BOAT?
    please help me
     
  2. daiquiri
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    daiquiri Engineering and Design

    Didn't know there was a standard for that.
    A closest relevant ISO standard which comes to my mind might be the ISO 11591 - Field of Vision From Helm Position.
     
  3. Ike
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    Ike Senior Member

    I don't think there is a standard because dynamic trim is dependent on a lot of variables, the hull shape, diehedral, Longitudinal CG, and more. Really, it depends on the hull design.
     
  4. dina
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    dina Junior Member

    thanks diquri
    but my boat is highspeed
    do you know any standard for high speed craft?
     
  5. daiquiri
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    daiquiri Engineering and Design

    Dina, standard for what? Please explain a bit better what you are looking for.
     
  6. Leo Lazauskas
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    Leo Lazauskas Senior Member

    I agree with the posts do far. There is very little in the way of standards, and we need
    more information from you, Dina.

    I think that the best you can do is to read:
    The Specialist Committee on High-Speed Craft,
    Final Report and Recommendations,
    Proceedings of the 26th ITTC, Vol I.
    Rio de Janeiro, Brazil, 28 Aug. - 3 Sept. 2011.
     
  7. dina
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    dina Junior Member

    I build a boat
    and tested it in calm water
    I am so Concerned about stability
    The range of dynamic trim was between3-17
    I want standard that say it is good or no
     
  8. Ad Hoc
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    Ad Hoc Naval Architect

    What size of boat, L/B..what power...what weight..and what speed etc etc

    All these shall help in understanding your concerns.
     
  9. dina
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    dina Junior Member

    weight:880
    L/B :26.875
    speed: 50knot
     
  10. daiquiri
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    daiquiri Engineering and Design

    Units, please?
    Dina, if you need a help, you should help those who are willing to help you. Please provide more data about your boat - length, displacement, propulsion type, hull type, deadrise etc. What kind of dynamic stability are you concerned about - longitudinal, lateral or something else?
     
  11. Ad Hoc
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    Ad Hoc Naval Architect

    A length to beam ratio of 26.875....sorry, that is nonsense!
     
  12. dina
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    dina Junior Member

    l/b= 2.7
    weight: 880 kg
    propultion: water jet
     
  13. dina
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    dina Junior Member

    speed: 50 knot
     

  14. dina
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    dina Junior Member

    hi daiquiri
    longitudinal stability
     
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