How does this look?

Discussion in 'Software' started by alanrockwood, Apr 3, 2011.

  1. alanrockwood
    Joined: Jun 2009
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    alanrockwood Senior Member

    I have been playing with Free!Ship plus to design a hull. This is just an intellectual/educational exercise. The project is a hull roughly inspired by Dutch barges, especially the Klipper style, but the hull make no pretense at being a replica or even a faithful representation of the the type. It is just my fanciful playing around.

    All the disclaimers taken care of, what do you think of it? I am posting a simplified lines plan, i.e. without most of the intersections, and a perspective view. The bottom panels of the boat are in a different color from the sides.
     

    Attached Files:

  2. Adler
    Joined: Jan 2010
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    Adler Senior Member

    Question

    Dear,

    Send please the Stability Data (Diagram) to see the performance of your design.
     
  3. alanrockwood
    Joined: Jun 2009
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    alanrockwood Senior Member

    I am still trying to figure out how to generate a stability diagram. I will post a stability diagram when I figure out how to generate it.

    However, at this point the model is just a hulk, i.e. no ballast, frame, engine, deck, superstructure, or furnishings, so I am not sure how informative the stability diagram would be at this point.
     
  4. Adler
    Joined: Jan 2010
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    Adler Senior Member

    Information

    I would like to see the Concept of your design.
    What is then main purpose for this Hull to be used?
    Will be used as Motor Yacht or Sailing Yacht or Passenger or Merchant?
    Which are the dimensions?
    What is the Hull material?
    What will be her navigation Area or the desire range?
    Will be coastal or medium range or ocean going?
     
  5. alanrockwood
    Joined: Jun 2009
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    alanrockwood Senior Member

    Purpose: pleasure cruising canals of Europe, especially France. Possibly limited offshore use, e.g. crossing the English Channel during calm conditions. Would be fitted out for extended live aboard periods (weeks at a time).

    Propulsion: diesel engine

    Range: undecided

    Dimensions: 20 meter X 4.13 meter

    Draft: 1 meter

    Airdraft: 3 meter (hull only)

    Freeboard: 2 meter

    Displacement: 31 metric ton (assuming 1 meter draft)

    Hull material: steel
     
  6. Adler
    Joined: Jan 2010
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    Location: PIRAEUS - GREECE

    Adler Senior Member

    Notes

    Please check to modify:

    Beam: 5.25m
    Draught: 1.40m stern
    0.90m bow
    Freeboard: 2.2m
     
  7. alanrockwood
    Joined: Jun 2009
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    alanrockwood Senior Member

    Oops, correction to the figures above. Freeboard was 1 meter and airdraft (hull only) was 2 meter. I made the mistake at first of measuring freeboard and airdraft from the bottom of the hull instead of from the waterline.
     
  8. Adler
    Joined: Jan 2010
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    Location: PIRAEUS - GREECE

    Adler Senior Member

    Info

    Dear,

    Please check the draught should be less than 1.7m regarding to use the hull in canals. This value is excluding keel height. Also you have to increase the mean freeboard value more than 1.5m and the beam more than 5.1m. The last should be useful to gain good seakeeping to British Canal even the weather comes to astern. Another advantage should be the ability to install two Engines in a large beam engine room and two propellers far enough from the centerline. The hull's depth (height from Deck to Keel) should be much enough to reduce the Superstructure volume and to keep a low profile to the wind pressure - very important to manoeuvrability for hybrid boats for rough seas and river canals.
     

  9. EuroCanal
    Joined: Jul 2010
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    EuroCanal Junior Member

    The maximum width on most French canals is 5m. A 5m canal boat like this would be OK to cross the channel in calm conditions. There was one recently that went around the UK coast, across to Ireland and on up to Scotland.

    A single engine is more common on the canals for this size boat. You need so little power underway at slow speed that a single engine is more efficient, and the extra prop is just added drag. Two props at the edges will be more exposed. Canal canal sides are shallower and often lined with large stones to reduce erosion, and other debris - you don't want a prop near that.
     
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