about self righting capacity

Discussion in 'Stability' started by Hunterr, Apr 10, 2016.

  1. Hunterr
    Joined: Jun 2015
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    Hunterr Junior Member

    u can see the self-righting of boat below link.

    https://youtu.be/Y2i1fOJ-itw


    I want to know the how Rescue boat has self-springing moment.
    do u guyz know the structure under upper deck?

    fill with concrete or mercury near the Keel?

    and Is it possible to Outboard engine?
     
  2. Mr Efficiency
    Joined: Oct 2010
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    Mr Efficiency Senior Member

    Less about concrete and more about the pyramidal "conning tower" I'd suggest.
     
  3. Jamie Kennedy
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    Jamie Kennedy Senior Member

  4. Hunterr
    Joined: Jun 2015
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    Hunterr Junior Member

    Can you tell me easily? I cant understand
     
  5. xichyu
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    xichyu Junior Member

  6. TANSL
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    TANSL Senior Member


  7. CDBarry
    Joined: Nov 2002
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    CDBarry Senior Member

    Google "45 RB-M Self-Righting" for another test video.

    The Finnish commercial rules require any "patrol" or "rescue" boat to be self-righting.

    It is achieved with a carefully designed deck house and other topside features.

    Cohen and Ghosh did a SNAME paper in 1991 on the 47 MLB that discusses the process in detail.
     
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