The project fast lightweight power catamarans - is possible?

Discussion in 'Boat Design' started by romanewas, Jan 6, 2017.

  1. Mr Efficiency
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    Mr Efficiency Senior Member

  2. romanewas
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    romanewas Junior Member

    It is interesting hull but unfortunately not for this area:( For a small bay or lake this catamaran will be perfect...
     
  3. Mr Efficiency
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    Mr Efficiency Senior Member

    Well, probably too small to be carrying a lot of passengers, but certainly an offshore boat, it could easily handle your conditions, it gets down to the comfort rather than the safety.
     
  4. romanewas
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    romanewas Junior Member

  5. Mr Efficiency
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    Mr Efficiency Senior Member

    haha, I don't think so. I think you should be talking to the certifying authority for the jurisdiction you intend to operate under, for direction as to what would suffice to pass their regulations.
     
  6. romanewas
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    romanewas Junior Member

    I can bet;) That on the short two-meter wave such catamaran will have serious problems.
    If you ask for certification, once I have written about it. In the European Union project a small ship must be comply with Directive 2010/36 and 2009/45. Nothing more than that. However, in some European Union countries could be a lot simpler. There are exceptions to these directives from what I know. I just check a simpler way now in Spain...
     
  7. romanewas
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    romanewas Junior Member

  8. Jim Caldwell
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    Jim Caldwell Senior Member

    That is impressive!!!
     
  9. romanewas
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    romanewas Junior Member

    That's why, I am looking for a designer who knows how to design a hull type swath. I asked if anyone here uses this software CAESES OptiSWATH...
     
  10. TANSL
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    TANSL Senior Member

    Do not limit the options. Most of the programs used by NAs allow the design of SWATH boats.
    Sometimes advertising is misleading because, imo, it is not the software that optimizes a design but the designer.
     
  11. romanewas
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    Ok but how to calculate the acceleration of the boat to a known state of the sea (for example, the wave height 2m)?
    What I mean is that if the acceleration is greater than 0.1 g then I had a problem. With cruises up to two hours could not be greater. Otherwise, passengers get seasick. This will cause bad reviews. As a result, lose customers (even breaking contracts with hotels if they seriously complain!!). I want to calculate the minimum size and buoyancy of the boat that at a speed of 20 knots does not exceed this parameter (at this state of the sea).
     
  12. TANSL
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    TANSL Senior Member

  13. romanewas
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    romanewas Junior Member

    Ok I wrote to them.
     
  14. Mr Efficiency
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    Mr Efficiency Senior Member

    0.1g is ridiculously low. I assume you mean 1.1g actually, we cop 1g sitting at the desk. A car going along an undulating road will impose somewhat greater, on passengers.
     

  15. romanewas
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    romanewas Junior Member

    Unfortunately, it is true. That is the standard. If the acceleration is greater is the risk of seasickness on passengers.
     
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