How to calculate midpoint draft depth of a keel/centerboard sailboat?

Discussion in 'Sailboats' started by SolomonShawn, May 7, 2020.

  1. SolomonShawn
    Joined: May 2020
    Posts: 1
    Likes: 0, Points: 1
    Location: United States

    SolomonShawn New Member

    I am looking for suggestions on how to calculate midpoint draft depth of a keel/centerboard sailboat.
    I am looking to use this to calculate theoretical PHRF base ratings using the Schell Regression Formula.

    My sailboat has a stub keel that extends an average of 12" below the hull having a length of about 10 feet. The centerboard extends about 4.3 feet with a 15" width along the center line of the sailboat when fully deployed.
     
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