Hull Offsets for SS United States

Discussion in 'Boat Design' started by johnhazel, Jul 9, 2014.

  1. johnhazel
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    johnhazel Senior Member

    I am for the looking for a good table of offsets for the SS United States. So far, internet searches have revealed a few lines plans but hopefully someone has the stations in a table of offsets form that they could send?
     
  2. TANSL
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    TANSL Senior Member

    I do not have the table of offsets but if you send me a hull lines plan, in pdf , jpg or tif format, with good definition, I can create the table with my software.
     
  3. johnhazel
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    johnhazel Senior Member

  4. TANSL
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    TANSL Senior Member

    OK, I'll try and see what can be done. I'll keep you informed.
     
  5. johnhazel
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    johnhazel Senior Member

    Thanks. I plan to put this into Michlet and eventually Flotilla to get resistance curves.

    Michlet can use up to 81 waterlines and 81 stations so I will have to take the offsets from the lines plans and smooth/interpolate them.

    I'll post whatever results I get from this :)
     
  6. DCockey
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    DCockey Senior Member

  7. Leo Lazauskas
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    Leo Lazauskas Senior Member

    I increased it to at least 161x161 (or 201x201) in the last couple of versions. I haven't looked at it for quite some time.
     
  8. TANSL
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    TANSL Senior Member

    johnhazel, please tell me if you get the table of offsets in some other way to stop my job. It is a laborious task and will never be as accurate as the original table, although I always try to approach a lot. Thank you.
     
  9. johnhazel
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    johnhazel Senior Member

    Yes I will do that of course. I have from time to time searched for a SS United States' Table of Offsets in the past 2 years with no success.
     
  10. johnhazel
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    johnhazel Senior Member

    Ah so now I can set it to 101x101 or 201x201 to think decimal-wise about where I am on the hull in my spreadsheets. :)
     
  11. 7228sedan
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    7228sedan Senior Member

    I routinely pass her by when I cross the Walt Whitman bridge into Philadelphia. Even in her current state of disrepair, she is still a beautiful machine. Such a shame to see her rot, I hope something is done with her other than scrap.
     
  12. TANSL
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    TANSL Senior Member

    Really, are they necessary 101 sections to determine the seaworthiness of a ship?. I was thinking of doing about 20 hull transversal sections.
     
  13. johnhazel
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    johnhazel Senior Member

    I think there are only 20 sections in the section lines of pdf we are looking at. From those offsets I will generate the sections in between.
     
  14. TANSL
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    TANSL Senior Member

    Then perhaps you prefer I send you a hull lines plan in CAD​​, instead of the table of offsets.
     

  15. johnhazel
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    johnhazel Senior Member

    No, I work with offset tables on spreadsheets to avoid being trapped by some programmer's idea of what good smoothing or interpolation is.

    Attached are a couple screenshots so people can see the lines plan we are talking about.
    The area of intrest is below the 31ft waterline
     

    Attached Files:

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