Why do some Wharrams have added keel towards the back?

Discussion in 'Boat Design' started by dustman, Dec 20, 2022.

  1. dustman
    Joined: Jun 2019
    Posts: 288
    Likes: 36, Points: 28
    Location: Tucson, AZ

    dustman Senior Member

    Why do some Wharrams have added keel towards the back?

    Is this to solve a balance issue or to add lateral resistance, or both?
     
    dustman, Dec 20, 2022
    #1
  2. skaraborgcraft
    Joined: Dec 2020
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    Location: sweden

    skaraborgcraft Senior Member

    If you mean "dagger boards", as on some of the Pahi range,, they aid both with resistance (leeway) and balance with regards to some self steering ability.
     
    skaraborgcraft, Dec 20, 2022
    #2
  3. dustman
    Joined: Jun 2019
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    Location: Tucson, AZ

    dustman Senior Member

    Not referring to daggerboards, but to what appears to be just a retrofitted flat board that starts about midship on the keel and terminates further aft. I would just show a picture but I'm not sure if it's proper to share photos off the wharram website.
     
    dustman, Dec 20, 2022
    #3
  4. skaraborgcraft
    Joined: Dec 2020
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    Location: sweden

    skaraborgcraft Senior Member

    Sounds like you mean the "skeg", usually aids tracking and supports the lower rudder.
     
    skaraborgcraft, Dec 20, 2022
    #4
  5. dustman
    Joined: Jun 2019
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    Location: Tucson, AZ

    dustman Senior Member

    Not the skeg, this:
    tiki.png
     
    dustman, Dec 20, 2022
    #5

  7. skaraborgcraft
    Joined: Dec 2020
    Posts: 378
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    Location: sweden

    skaraborgcraft Senior Member

    Low profile keel, for the purpose you previously stated.
     
    skaraborgcraft, Dec 21, 2022
    #6
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