FREE!Ship New Project Model Questions

Discussion in 'Software' started by machru, Jan 9, 2019.

  1. machru
    Joined: Jan 2019
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    machru Junior Member

    Hello all,

    I have taught myself sailboat design with the help of Ted Brewer's book, and, in an armchair way only, have designed a few boats. Now I want to try to work on one that I intend to build.

    I have a good background in CAD programs. I downloaded Freeship and it seems easy enough to move around in. My question lies in the 'prototype' model that is presented when a new project is started.

    I want to design a dory: LOA-18 ft. Beam-5 ft. Draft-1'-10'. Freeboard-1'-7" at the bow. If I input the first three items, I get a free board of almost six feet. It looks a very cartoonish vessel.

    Is there anyway I can change the de facto settings in Freeship? Or just start from scratch? I find it much more difficult to try to move things around than if I started from a blank space.

    **Edit**Here us a pic of the boat I'm modeling my own after.

    I appreciate your help in advance.
     

    Attached Files:

    Last edited: Jan 9, 2019
  2. Mr Efficiency
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    Mr Efficiency Senior Member

    Your dimensions seem odd, the draft and bow freeboard anyway. Whether that is throwing out the program, I don't know.
     
  3. machru
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    machru Junior Member

    To start with, I took these dimensions off of The Dory Shop's ******* vessel http://www.doryshop.com/*******-dory.html. This is a rowing/sailing dory, after all, so if you're not used to them, then these dimensions might seem a little strange.
     
  4. Mr Efficiency
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    Mr Efficiency Senior Member

    Where is the 1' 10" of draft coming from ? A centreboard ?
     
  5. machru
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    machru Junior Member

    This dimension did make me scratch my head. It seems to deep for the flat bottom boat, but too shallow for a C/B. I am taking it on faith they know what they're talking about.
     
  6. Mr Efficiency
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    Mr Efficiency Senior Member

    Does it have some kind of internal well to take a small outboard ? Maybe the 1' 10" is with the motor installed, otherwise a draft of even half that, seems way too much.
     
  7. machru
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    machru Junior Member

    I think that most have that option. I have sent an email to The Dory Shop asking for some clarification.

    I have tried entering a much smaller draft on the new project dialog box, planning to adjust it myself, but the grid provided in Freeship is based around the original input. And without the ability to measure distances on the models, I can't be sure I would be adjusting the plans lines to the proper dimensions.
     
  8. Mr Efficiency
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    Mr Efficiency Senior Member

    Yeah, I have no idea what bearing that has on the way the program functions, but try 9" draft and see what happens.
     
  9. machru
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    machru Junior Member

    I have done that, but it comes back with a freeboard of 2'-9". I guess I'll have to manipulate the plans myself.
     
  10. machru
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    machru Junior Member

    So I have tried a different design idea. A 43' ketch, I have input an LOA of 43, Beam of 12 and Draft of 2.5. The draft is without the keel. The model comes back with an 8 foot freeboard. I can only imagine what it might be if I were to input the total draft of 5 ft.

    My question is, does anyone know how I can change the parameters to the initial model? Can it even be done? Is Freeship used mainly for power boats? It does seem that wrestling with their initial model is much more difficult than just starting from scratch. I would appreciate all the help I can get & thanks.

    I have attached an image of the hull it generated from the above dimensions.
     

    Attached Files:

  11. Mr Efficiency
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    Mr Efficiency Senior Member

    It seems quite stretched in the vertical plane. Someone may know how to adjust for that, I am not familiar with it.
     
  12. mick_allen
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    mick_allen Junior Member

    Is there anyway I can change the de facto settings in Freeship?
    how I can change the parameters to the initial model? Can it even be done? Is Freeship used mainly for power boats? It does seem that wrestling with their initial model is much more difficult than just starting from scratch.
    . . . . the hull it generated . . .

    The questions you ask are so basic to the program that you need to learn it: so with respect - take the time [probably in the scale of 100 hrs] and rtfm.
     
  13. machru
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    machru Junior Member

    Mick, Thanks for your reply & I understand what you are saying. There's always a learning curve to every program. I started drafting with pencil & paper, rule, compass & French Curves. Then came AutoCAD.

    I understand how the program works. I'm just trying to figure out if there is a way to manipulate the initial generated model. Every end user wants the program to do things the programmer hasn't thought of or included (due to time, code, cost &c,).

    It comes down to a binary: either I can change the initial settings or I can't. I have been through the manual multiple times and played with everything I can think of, but to no avail. I'm just trying to design a dory so I can start thinking about materials & time. Maybe a return to paper & pencil will work better for this project.

    Oh, and what is 'rtfm'?
     
  14. patrik111
    Joined: Sep 2003
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    patrik111 Junior Member

    Having RTFM, there is no obvious way to change what you are looking for.
    If you have not yet googled it, RTFM is what people say when tired of answering questions from other people who have not bothered to Read The Manual, will leave F to your imagination. :)

    Depending on your level of programming skills, the source code for the opensource version could be found at
    markmal/freeship-plus-in-lazarus https://github.com/markmal/freeship-plus-in-lazarus
    which is a work in progress.

    There are other things that would be excellent if they were changeable, but would also require programming skills, such as output speed range for michlet output etc.
     

  15. machru
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    machru Junior Member

    Thanks for clearing up my ignorance. The manual is minimal to say the least, and once you hit the fifth page of search results, you tend to think there may not be an answer. So I came here hoping to find someone who was more experienced. Alas, no.

    Also, alas, my programming skills are not up to that point.

    The good news is I have thrown Freeship over the side and adopted Delftship. While it still produces the 3:1 freeboard to draft (which still seems VERY unusual), you are capable of starting from a blank slate, as well as moving more than one point at a time.
     
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