Freeing Port Size

Discussion in 'Boat Design' started by Tom Ask, Feb 14, 2010.

  1. Tom Ask
    Joined: May 2004
    Posts: 13
    Likes: 1, Points: 0, Legacy Rep: 14
    Location: Cogan Station, PA

    Tom Ask Junior Member

    Does anyone have sizing equation for freeing ports. All I have is an old ISO equation related to deck area. Any insights would be helpful!
     
  2. SeaJay
    Joined: Jun 2007
    Posts: 211
    Likes: 5, Points: 0, Legacy Rep: 112
    Location: Sacramento

    SeaJay Senior Member

    Tom,

    I've been chasing similar info and came across this series of articles/letters in Professional Boatbuilder. I suggest reading in the order listed. This isn't a direct answer to your question, and I haven't reviewed/researched this material in detail, but I think it should give a point(s) of departure for further investigation.

    http://www.proboat-digital.com/proboat/20080405/#pg122
    http://www.proboat-digital.com/proboat/20080607/#pg6
    http://www.proboat-digital.com/proboat/20080809/#pg6

    Best Regards,

    SeaJay
     
  3. Ike
    Joined: Apr 2006
    Posts: 2,532
    Likes: 367, Points: 83, Legacy Rep: 1669
    Location: Washington

    Ike Senior Member

    ABYC has a standard for cockpit drains and scuppers which includes a standard for how quickly they have to drain the cockpit. Its H-4 Cockpit Drainage Systems. Www.abycinc.org
     
    Last edited: Feb 24, 2010

  4. Tom Ask
    Joined: May 2004
    Posts: 13
    Likes: 1, Points: 0, Legacy Rep: 14
    Location: Cogan Station, PA

    Tom Ask Junior Member

    Thanks for all your help, I received a DNV citation also.
     
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