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RADICAL New Hull Design...

Discussion in 'Technical Discussion' started by SAB, Mar 13, 2005.

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  1. Donald Blount, Apr 14, 2005
    #21
    Donald Blount

    Donald Blount New Member

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    Thanks for sharing the STASH information. I had a staff member at Project 2004 and will discuss with him the material presented there. It looks like it has possibilities for displacement motor yachts.
  2. SAB, Apr 14, 2005
    #22
    SAB

    SAB New Member

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    theres a good pdf document on the AMELS website about the STASH concept, showing tank tesing images, stability, resistance figures, wave interactions between the hulls. The concept for a Monohull to Catamaran hull was probably first seen on the 'Alcyone' (launched in 1985)... the Cousteau research ship which also had wind turbosails.
  3. SAB, Mar 3, 2006
    #23
    SAB

    SAB New Member

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    SWEEP hullform

    Don Burg, the inventor of a new patent-pending ship hull concept, the 'Ship with Wave Energy Engulfing Propulsors' or 'SWEEP', has combined the advantages of a bulbous bow with those of an air-lubricated ship (ALS) to significantly reduce the wave drag of displacemnt hull forms.The SWEEP concept takes advantage of the inward turning water around a bulbous bow, thereby sucking wave energy, thereby reducing wave drag, and accelerating the wave-making water flow into a high flow propulsor(s). The flow from the bow mounted waterjet is discharged into an air layer beneath the hull. The air layer needs very little blower power to be maintained. What this all means is that a SWEEP can be efficient over a large operating speed range. For example a 122m SWEEP can obtain a total drag reduction of around 15%-20% @ 20 knots, and a 40% reduction @ 45 knots. Studies carried out to date show the SWEEP concept is technically feasible and further analysis and model testing is planned as the next step in development.

    Attached Files:

  4. mp-willow, Mar 17, 2006
    #24
    mp-willow

    mp-willow Senior Member

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    Stash?

    After reading over the posts and the STASH info, I have a question, maybe I missed it, but the drive in always flooded tender garages, seem to be always open to the outside? If always flooded, in the case of the new project to swim in, are the tenders lifted up clear of the water?

    The idea and hull design are very interesting, I hope to read more.;)
  5. Cooltop35, May 15, 2008
    #25
    Cooltop35

    Cooltop35 New Member

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    Cost

    How much would the 2002 70m design actually cost to build/fit out if you don't mind me asking?

    She is a beauty by the way - well done!
  6. SAB, May 17, 2008
    #26
    SAB

    SAB New Member

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    Not much change short of 70M Euro is a good estimate.
  7. CSC1000, May 31, 2019
    #27
    CSC1000

    CSC1000 New Member

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    Please take a look on the works of the French designer Malavard, this hullform has been used for the "Alcyone" from the Cousteau Society.
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