Tunnel Prop Question

Discussion in 'Boat Design' started by big-boss, Oct 17, 2008.

  1. big-boss
    Joined: Mar 2008
    Posts: 58
    Likes: 0, Points: 6, Legacy Rep: 10
    Location: Exeter, CA

    big-boss Junior Member

    I am going to repower an old 27ft Uniflite with a cummins and about a 20dia prop. I do not want to loose all the draft with a propeller sticking down. Can a cut a "tunnel" in the bottom of the transom and tuck it under without loosing efficiency? I do not have much engine compartment this tucking up would also help with the angle off the back of transmission.
    How would I design this? Thanks
  2. Olav
    Joined: Dec 2003
    Posts: 319
    Likes: 46, Points: 38, Legacy Rep: 460
    Location: Filia pulchra Lubecæ

    Olav naval architect

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