Standards for hull thickness

Discussion in 'Wooden Boat Building and Restoration' started by chuckboat, Apr 25, 2010.

  1. chuckboat
    Joined: Apr 2010
    Posts: 6
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Tennessee

    chuckboat Mr. Ishman

    Can anyone tell me if there is a standard practice for determining the hull thickness for a wooden boat?

    I am drafting plans to build a 20x8x4 foot wood boat. It's intended purpose is for low speed pleasure cruising, so high stress points should not be a concern. I am considering a 1/4'' hull thickness, ply wood over a wood frame, stain and varnish inside and out.

    All comments welcome.

    Chuck
     
  2. rasorinc
    Joined: Nov 2007
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    Location: OREGON

    rasorinc Senior Member

    I like a minimum of 3/8 to 1/2" bottoms and lean toward 1/2" for a 20' length.
    If you have curves go double 1/4"--hard to bend 1/2". If your going to be boating in a stream or river with lots of rocks go 5/8"
     
  3. Wynand N
    Joined: Oct 2004
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    Location: South Africa

    Wynand N Retired Steelboatbuilder

    see if you can lay your hands on Gerr's book "Elements of Boat Strength" It is all there and more.
     
  4. Boston

    Boston Previous Member

    its also in elements of yacht design by Skene

    20' boat eh
    plank thickness of 7/8 is what old Skene lists for a simple plank on frame keel wooden power boat

    at 1/4 inch you might want to bring some swim gear and a few extra towels
     
  5. conceptia
    Joined: Nov 2009
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    Location: Houston

    conceptia Naval Architect

    Elements of Boat Strength is a good one to start with...
     

  6. chuckboat
    Joined: Apr 2010
    Posts: 6
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Tennessee

    chuckboat Mr. Ishman

    RASORINC: Thanks for the advice. I'll go with 2 layers of 1/4 ply for hull.

    WYNAND N: I'll add Gerr's book to my set.

    BOSTON: I think we will have plenty of towels and buckets on hand on our maiden voyage. Will post performance results when I have them.

    CONCEPTIA: Thanks for your additional reconendation for Elements of Boat Strength.
     
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