Four hulls better than two?

Discussion in 'Boat Design' started by Wynand N, Mar 11, 2005.

  1. Wynand N
    Joined: Oct 2004
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    Wynand N Retired Steelboatbuilder

    Gentleman, can you explain design concept of this contraption :?: and what do you think

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  2. MikeJohns
    Joined: Aug 2004
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    MikeJohns Senior Member

    The amas retract into the hull sides, looks like a pet project of a student that got built, supposed to be trailerable I suppose, I wonder how she sails?
  3. icetreader
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    icetreader Senior Member

    Parking space

    Takes less parking space at the marina ;)
  4. asathor
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    asathor Senior Member


    It looks like they added the second forsail later - could that be to compensate for the higher wetted surface of 4 skinny hulls??

    I like the Marina advantage.
  5. tspeer
    Joined: Feb 2002
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    tspeer Senior Member

    The second foresail at the end of the bowsprit is called a "screecher" and it's just about universal on modern multihulls. It's used when reaching, for going to windward in very light winds, and as a heavy-air substitute for a spinnaker. Typically dropped when not in use, however.

    There have been other 4-hulled boats built. But they have most of the worst characteristics of catamarans and trimarans. Excessive wetted area, irreducible beam, expensive construction. The problem is how to fold a catamaran on the water - there just hasn't been a good solution perfected yet. Folding trimarans, particularly the Farrier designs, have proven to be far more effective. The only advantage to 4 hulls is theoretically you can divide the displacement into even narrower demihulls and achieve some reduction in wave drag. But that doesn't seem to be the way this design has gone.

  6. JimCooper
    Joined: Feb 2005
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    JimCooper Junior Member

    room to squeeze in out of the weather?
    no room in those main hulls cause of the mould to take the outers.

    Some designers just don't get the idea that you can marry comfort and capability.

    can you imagine her in a big quartering sea ?
    Leave it to the gizmo gadget brigade.
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