I Need SOFTWARE!

Discussion in 'Software' started by Jezzza777, Jan 26, 2010.

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  1. nukisen
    Joined: Aug 2009
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    nukisen Senior Member

    Hahaha then I think You want to keep the calculation of the wetted surface also. :)

    As not many open source 3d modeller are able to handle this.
    Definately not for a house!

    Cheers!
    Janne
     
  2. apex1

    apex1 Guest

    He wants everything for free! And he wants it immediately! Only a few are as unashamed as this one.
     
  3. BTG YACHT DSGN
    Joined: Oct 2008
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    BTG YACHT DSGN -sailing is believing-

    too much emotion shared late night... I'll try to give some feedback here now.
     
    Last edited: Feb 1, 2010
  4. magwas
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    magwas Senior Member

    I have given a lot of thought to whether to even answer this. I do not reply directly to the comment because I have flagged it for moderation.
    I am working in IT, and shareholder in a company which develops some software which is best of their kind. All of them have an open source version, some fully open source. The number of emloyees is around 50, some 30 being developers. All of them are paid partly for developing open source, and some of them develop exclusively open source.
    This is my background (and yes, I am very proud of it).
    I admit I am not a world class programmer (I know what a world class programmer can do, I am employing several of them), but still better than most of the mouse chasers out there. Every single line I have ever written is open source. When I encounter a bug I can fix I contribute back to the community.
    Boat design is just a hobby for me, I am not a threat to your bread. I approach it the same way I approach everything. I believe in information sharing. You might have noticed that when I ask about a design I attach everything I have designed, and in useable format.
    I am living in Central Europe. Though I think that India have given the best ever man to the world: Gandhi.
    Now you can call me unashamed.
     
  5. Jeff
    Joined: Jun 2001
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    Jeff Moderator

    Megwas, the first reply in this thread was in fact a recommendation to give Delftship a try -- there is both a free and a paid version of Delftship. The free version of Delftship and the open source FreeShip created by the same developer upon which it is based are frequently recommended here. However if you look at the replies by the original poster - for example "I don't have it yet" and "hi, i need software to build a cruise boat" I think you can understand the nature of the replies. There have been a number of posts recently from students in India who have posted very reaching requests with too sparse details to answer hence those reactions. I do not believe there is a bias against India as a country or free or open source software... it's just a bit reaching to ask for a (free) design cd to build a cruise boat with no more specific details given, nor a reply why the free version delftship is not an option for him, etc.

    What kind of cruse boat are you designing? What are the criteria of your project? Is it academic or for a real-world build? What experience do you have? What software have you evaluated so far? What are you currently using day to day? In terms of just the software, what aspects of this cruise boat will you be designing and what is your budget? Do you have a design team or consultants that will be using the software/format or just yourself and what is your budget for the software you are seeking? There happens to be much less open source software available than commercial software for hull modeling, so budget is a very real aspect of this question.
     
  6. magwas
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    magwas Senior Member

    Well, I may have overreacted, but the name calling was started by a comment from a troll who repeatedly attacks me in this forum stating I want everything for free, and it was qouting a reply to one of my comments.

    I do not know if your questions are directed to me or serve as an aid for our indian students, but I try to answer anyway. I am starting small, a 3m kayak made from plywood. When I have built it, I plan to do a catamaran out of two such hulls. When that is done and I am still interested in the thing, I might design a blue water trimaran. It is not actually much design: the kayak needs virtually no scantling considerations and I believe even the catamaran would work if I just come out with sizing off the top of my head. But I want to understand the mechanics behind, and this is where my trouble has started. See http://www.boatdesign.net/forums/bo...ement-naval-architects-please-help-30693.html for the small design and illustration.
    As this is only a hobby, I am the design team, and because it is a small project, I do not have any budget consideration. I have very basic knowledge in mechanics (can come up with shear and moment in simple beam settings, but don't know how to apply this to size a beam). I have evaluated some 6 open source cad and 3d modeling programs, and settled with freeship, using qcad for the occasional 2d drawing tasks (e.g. converting a plate development to origami plan).
     
  7. BTG YACHT DSGN
    Joined: Oct 2008
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    BTG YACHT DSGN -sailing is believing-

    So tell me am I understanding correctly: you're about to design a kayak hull, then manufacture two of them to make a catamaran, add some sails and make it cruiseable? Am I right? If so, I can propose an interesting solution, that in fact is on the market, but could be easily aplied also in this particular project.


    The idea is that the plywood floor is lifted if the boat is not sailing and to the edgdes of this floor there's a piece of watertight material attached, and also attached to the hulls on the side. This plywood floor is lifted from the stern side, because it has an axis for rotation near the mast.

    Might be an interesting solution to apply. Very simple and seems to give minimum of comfort enabling (in this particular project) to place 3 breaths.

    That's my 2 cents here...
     
  8. muthu009
    Joined: Jan 2010
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    muthu009 New Member

    software

    here r some ship design softwares
    navcad
    free ship
    delft ship (can be downloaded in trail version)
    maxsurf
     
  9. magwas
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    magwas Senior Member

    Can I understand you correctly that you are talking about a design like this: http://www.boatdesign.net/forums/boat-design/small-cat-31261.html ?
    I am not sure I understand the part about lifting from the stern side. Is the rotational axis in the bow end of the floor?

    My original idea was using thick plywood for the floor and lots of bolts all around. I am concerned with the forces. I could not yet figure out what design forces to use and then I still have to come out with thickness and bolt spacing.
     
  10. Wynand N
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    Wynand N Retired Steelboatbuilder

    I hate to piss on your parade, but the member you are referring to here are one of our most respected and knowledgeable members with a CV in the boating industry you can only dream off.

    Reading the quote above it seems that you are name calling :confused:
    Some parting thought; "cowboys do not cry"
     
  11. apex1

    apex1 Guest


    You completely misunderstood the comment PAR made!
    He was referring to one special Indian university, where obviously the students share their knowledge about this Forum, being helpful.
    The same is valid for the ITU in Istanbul.

    And you, as obviously, do´nt know much about "open source" software. You have been told that once, but you might have forgotten. So, I will refresh your memory.

    bistros wrote:

    the complete post is here:

    http://www.boatdesign.net/forums/sailboats/open-source-designs-30946.html#post334313

    You have been lucky that Ad Hoc assisted you in learning the basics of yacht design until it came to some legwork to be done by yourself! But thats not your approach, you like to be spoonfed. That is what I call unashamed.
    Name calling looks quite different.

    But what do you know? You call me troll.

    You called all the NA´s and builders and designers here unsocial, because they were not willing to give you a free ride on a subject matter taking years to accomplish.

    So, when WE are the trolls ok, so be it........:cool:


    A general footnote:
    one should not assume a serious answer when one is childish enough to show a location like "planet" , "cybertron" or "elsewhere" !!!
    That might look funny at the drivel and jokes departement but it looks just premature in the serious parts of the Forum.:rolleyes:

    Richard
     
  12. magwas
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    magwas Senior Member

    bistros has made some very important points, and I am thinking the same as him. I hope you will understand it sometime.
    It is very funny that you are the one who wants to teach me what open source is. Believe me it is impossible to live from open source without fully understanding it: if you are not honest, the community will drop you out. It did happen even with the biggest companies.
    FYI:
    I am doing my homework. If you would also read the forum, not just write, you would have noticed. I want to be sure what general arrangement is before I take more time of Ad Hoc. Yes, I had been heavily discouraged for some time by agressive comments I did not understand the reason behind. Now I think I understand the reason. Let me tell you that those who soundly believe that they are good in something do not feel the need to show others how little they know about the subject.

    Not being willing to give out information is not unsocial, just not wise in most circumstances. This is what I have said. Bashing the ones asking is unsocial. Even by those who know their profession very well.
     
  13. BTG YACHT DSGN
    Joined: Oct 2008
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    BTG YACHT DSGN -sailing is believing-


    Look: I had in my mind, as you said, a small cat. The floor is attached to the hulls permanently. On this floor there's another, the same dimensons but free to rotate about an axis in its ,,bow" part. The floor permament and the floor lifted are connected by a piece of mateial. That creates a small cabin for 3 breaths.

    Would it be helpful for your particular project?

    If I had more time I'd sketch it:cool:
     
  14. magwas
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    magwas Senior Member

    I think I got the idea now. It is surely of use for someone, but I am thinking about just a small confined water daysailer. I guess I would plan a bit bigger and use the hulls for accomodation if I wanted it to be cruiseable.

    Well, it is the on-water equivalent of camping. Could be nice for father-and-son adventure, kids old enough to camp out by themselves (my wife would die of worrying), or the young cost-conscious for a lake holiday.
    However when the weather is rough, it seems it could be very bumpy. I guess it could be designed in a way that it could be comfortably anchored from bow (make the lifted floor's center of effort due to wind to after midship), so the lifted floor can mean real shelter, but I am not sure how comfortable would it be compared to say a 25ft monohull. I guess the longitudinal metacentric height of the monohull would be much higher than the cat not just due to length but also to weight distribution. Granted a 10ft cat costs heaps less.
     

  15. sandeep
    Joined: Jan 2010
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    sandeep Sandeep

    Try Delft ship it's a very simple software.It will helps you to do initial design
     
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