Questions on a Displacement Hull

Discussion in 'Boat Design' started by hershey2014, Aug 8, 2014.

  1. rwatson
    Joined: Aug 2007
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    rwatson Senior Member

    yeah, but a 1/3 of those are only 6mm ply

    The whole thing only weighs 1,100 lbs - 500 kilos, of which 50 kilos is goo.

    Thats pretty efficient.

    and if someone has to get back to land quickly, it will do 25 mph with the bigger motor.
     
  2. DCockey
    Joined: Oct 2009
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    DCockey Senior Member

    hershey2014, the original poster, wants a boat with a pointed bow built of aluminum.
     
  3. PAR
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    PAR Yacht Designer/Builder

    Agreed about the content of the BOM, but it's still a lot of sheets to cart home from a supplier.

    I still think a 20' or 22' boat, (with a sharp end) will accommodate the volume desired.
     
  4. AndySGray
    Joined: Jun 2014
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    AndySGray Senior Member

    Loading & Unloading

    Does the lake have lots of good docks ?

    I'm thinking you want reasonably high bulwarks with seniors involved, but the flip side is they will not be comfortable climbing over them to enter or exit.

    If docks are plentiful, you need side access flush with the deck.

    If not you may need more like a bow ramp - landing craft style - suitable for beaching.
    Though this doesn't fit with the bow design already mentioned, a landing craft design will give you the width given your requirement for wide stance in a short length, and there are many designs already available in Ally. I guess this is at the function end of the form vs function scale.
     
  5. PAR
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    PAR Yacht Designer/Builder

    Steps up the side of the cockpit, usually near or part of a seat, aren't difficult to build and can solve debarking issues.
     

  6. rwatson
    Joined: Aug 2007
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    Location: Tasmania,Australia

    rwatson Senior Member

    yes, but

    For an 18ft boat, with the characteristics of aluminium , costly to engineer, and complicated to build.

    I reckon Plywood would make a good solution.
     
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