aditional beam concern

Discussion in 'Boat Design' started by mindsailingscott, Dec 3, 2003.

  1. mindsailingscott

    mindsailingscott Guest

    We just piked up a columbia 50 in a unfinished condition she is aprox 15% wider than stock I am comfortable with the widening structuraly though am concerned about aditional inverted stability any one have a opinion or other isues involved? She needs a new deck any way so bringing her back to stock wouldent be to much more efort at this point. Thank you in advance
    Scott Drake (562) 225 5197 mindsailingscott@aol.com
     
    mindsailingscott, Dec 3, 2003
    #1
  2. Tad
    Joined: Mar 2002
    Posts: 2,307
    Likes: 191, Points: 73, Legacy Rep: 2281
    Location: Flattop Islands

    Tad Boat Designer

    Scott,

    Originally these boats, due to being narrow and deep in comparison to a modern hull, were pretty unstable upside-down. The additional beam will change this characteristic, but not much.

    Original beam was 12', plus 15% = 13.8'

    max beam/ cube root of displacement/64

    equals capsizing screening number, if lower
    than 2, she is a cruiser.

    At 1.74 you are in cruiser territory


    Tad
     
    Tad, Dec 3, 2003
    #2
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