need advice - comfortable 7m water taxi design

Discussion in 'Boat Design' started by nuwanda324, Apr 3, 2015.

  1. nuwanda324
    Joined: Mar 2015
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    Location: istanbul

    nuwanda324 Junior Member

    So i must increase waterplane area. That will decrease the problem. I cannot completely solve this problem without using monohull because almost all highspeed craft types sensitive to changes in weight.
    I think vessel like these will be good for me
    [​IMG]
    [​IMG]
     
  2. WindRaf
    Joined: Oct 2014
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    WindRaf Senior Member

    In fact, those boats are 14 meters and over, and I doubt that they are comfortable with the waves of one meter
     
  3. nuwanda324
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    nuwanda324 Junior Member

    No 7-10 m vessel will be comfortable in 1m waves. I am trying to find the best.
     
  4. Mr Efficiency
    Joined: Oct 2010
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    Mr Efficiency Senior Member

    "Comfortable" is subjective.
     
  5. nuwanda324
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    nuwanda324 Junior Member

    I am talking about vertical acceleration. 0,5-0,7g cause seasickness. So vertical acceleration must be below than 0,5g.
     
  6. Mr Efficiency
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    Mr Efficiency Senior Member

    I doubt vertical accelerations are directly related to seasickness, and also restricting your vertical accelerations to below 0.5g will be a job and a half.
     
  7. nuwanda324
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    nuwanda324 Junior Member

    I am comparing models. Maxsurf gives me some result. I am trying to lower the vertical acceleration. How am i going to measure the comfort? Do you have another suggestion?
     
  8. Mr Efficiency
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    Mr Efficiency Senior Member

    Where are you running this thing, up the Bosphorus ?
     
  9. nuwanda324
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    nuwanda324 Junior Member

    Yes it is a sea taxi for Istanbul. Thats the reason of speed limit.
     
  10. Mr Efficiency
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    Mr Efficiency Senior Member

    Is the prevailing winds direction across, or along that waterway ?
     
  11. nuwanda324
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    nuwanda324 Junior Member

    There is no particular wind or wave direction. But %85 of the wave height is below 1,2 m.
     

  12. Mr Efficiency
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    Mr Efficiency Senior Member

    I think it is very difficult to arrive at a comfortable boat for a small number of passengers, make the boat small enough so it is economical to run, not so good for the passenger;s comfort, make it large enough that it will be comfortable, economy may suffer, you could have a boat that accomodates 30 or 40, only carrying ten, which hurts the operator.
     
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