FREE!ship continues as DELFTship

[daiquiri]

Originally Posted by marshmat

Daiquiri, a power curve is just a resistance curve multiplied by velocity. Just multiply the resistance you get at each speed, times the speed, to get indicated power...

Marsh, please...

I was referring to the comodity of having it on the graph without having to perform those calcs manually.

But the issue I find really important is the absence of a module for calculation of resistance for planing hulls. I find it a really serious (and quite anachronistic) flaw in what is otherwise an excellent software. Martin, it is not a downplaying of your work (being an ex-programmer myself, I know the effort it takes to make a software like that), just a hint on what I believe should be a priority for the next release.

[Martijn_vE]

Marshmat,

In hindsight, maybe Word is not the product you want to be compared with.
But thanks, things are going very well at the moment, despite the financial crisis.

[Martijn_vE]

Originally Posted by daiquiri

Martin, it is not a downplaying of your work (being an ex-programmer myself, I know the effort it takes to make a software like that), just a hint on what I believe should be a priority for the next release.

The weird thing is that priorities seem to vary from one person to another.
I've been working on a resistance module that also includes Holtrop & Mennen, Oortmerssen, Hollenbach and some others. But not Savitsky (planing hulls). It's not yet been released since it still has to be validated.

Thanks though.....

[masrapido]

I think these people are selling Freeship!:

http://www.3dboatdesign.com/

Even some images are directly from it, and they even admit the program is from open source community. Martijn, you may want to check this page to see if they are trying to ride your wave.

I am sure they are.

[liki]

Originally Posted by masrapido

Even some images are directly from it, and they even admit the program is from open source community. Martijn, you may want to check this page to see if they are trying to ride your wave.

Clearly the SW in question is Free!Ship. Personally I did not check the licensing more than to ensure that it is free for my personal use, but very well the license could allow others to resale it aswell? If not, this is a clear case of infringement.

Also, under the screen shots category is a picture of a canoe I recall seeing before on this site, posted by someone in a discussion regarding creating deck hatches etc. with DelftShip or Free!Ship.

[daiquiri]

Originally Posted by masrapido

I think these people are selling Freeship!:
http://www.3dboatdesign.com/
Even some images are directly from it, and they even admit the program is from open source community. Martijn, you may want to check this page to see if they are trying to ride your wave.
I am sure they are.

Ooooouuch, that's nasty! I hate these things.
Those guys have made a bad move!

[masrapido]

Originally Posted by liki

Clearly the SW in question is Free!Ship. Personally I did not check the licensing more than to ensure that it is free for my personal use, but very well the license could allow others to resale it aswell? If not, this is a clear case of infringement.

Also, under the screen shots category is a picture of a canoe I recall seeing before on this site, posted by someone in a discussion regarding creating deck hatches etc. with DelftShip or Free!Ship.

I am on a ship and do not have all the files, including the licence so not sure about that. The licence would probably allow others to resell it, but as long as you give the credit to the original author. Nowhere on the site the name freeship or it's author are mentioned.

Fishy biznis if you ask me. And what is with the "updates"...? For life, no less. Probably delftship version.

[Martijn_vE]

Thanks masrapido.
In fact several oeple are selling FREE!ship, only not as rude as those guys. It is in fact allowed to ask money for it, but only a "reasonable fee" for costs made to reproduce the software (burning a CD or whatever).

Anyway, I've contacted them on their website with the following message:

Hi,

as the original developer of the FREE!ship software that you are clearly selling I'd like to make the following comments:

1. FREE!ship is OPEN-SOURCE software published under the GPL license. Please read the license (which is shipped with the software) thoroughly since you are violating the license and my copyrights. If you don't have a copy of this license please contact me and I'll make sure you get it.
2. You must make a statement on your website that "your" software is based on the open source FREE!ship. If you are using (and modifying the source code, which I seriously doubt) you are obliged to both distribute the source code as well as the binary compiled files.
3. Even in case you have modified the code you must distribute this under the same GPL license, and make sure that people on your website are aware of this fact. I don't see a reference to the GPL license, the fact that the code is open source on your site.
4. You are giving people the impression that YOU are the developer of this software, which you are obviously not. You've just downloaded it and are selling it, unmodified. You've even copied the release notes without modifying it. Although it is not illegal to request money for distribiting the software according to the GPL license, itt is not legal to request more than a reasonable fee for the cost you have made for copying it (eg costs for the CD etc.) $38 does not seem a reasonable fee to me.
5. You state on your website that users will get free updates. Now I'm very curious to when the first update is to be expected.

I'm looking forward to your reply,

Kind regards,

Martijn van Engeland

I'm very curoius to their response (if I'll even get one....).

Interestingely enough the's a VERY small disclaimer at the bottom of the website. Once you press it the following text appears:

--3DBoatDesign.com is not endorsed and/or related to any CAD, Software House or any other company in any way shape or form.

--3DBoatDesign.com acknowledges that there may be an undisclosed amount of the pictures and / or other content found on this site that are not property of 3DBoatDesign.com. If you feel you own one of these pictures and / or content, feel free to contact us at through our site. We will either remove the photo(s)and / or content or add credits. Contact Us Here

--3DBoatDesign.com is copyrighted under the United States and other World Wide Patents. Any recreation of this site without permission is prohibited.

--3D Boat Design tm is a trademark and can not be used without express permision by 3DBoatDesign.com

--All 3DBoatDesign.com logo images and site design are property of the webmaster. They may not be reproduced without permission.

--Images supplied by:
Hector Landaeta
Peter Szustka
Geri-Jean Blanchard

So they admit some of the images are not their property. (not the source code though...)

[Martijn_vE]

-3DBoatDesign.com is copyrighted under the United States and other World Wide Patents. Any recreation of this site without permission is prohibited.

--3D Boat Design tm is a trademark and can not be used without express permision by 3DBoatDesign.com

For someone who's shamelessly selling someone else's software they are very protective of their own website

[masrapido]

It would be interesting to see their response, if it eventuates. Since it is a download, there are no costs of even a CD copy. But pretending it is their software is what I find the most irritating detail.

Also, they claim to be from New Zealand, yet they are from usa. Can't be a honest operation anyway one looks at it.

[masrapido]

At the bottom of the Contact us page, and in black so that you can safely miss it:

Part of the IDP Productions Group New Zealand

[Martijn_vE]

If I learn more I'll make sure to keep you posted.

[ricardoribeiro]

I am making a model of decoration of about 2', I will use that hull, but I want to do the other things in a program igs.
In the freeship he doesn't open, and in the freeship he exports in igs, in the delftship that doesn't happen.
It is not for professional use, is it alone for a hobby, could anybody send me that file in the format freeship or igs?
Thankful

[Martijn_vE]

Try the attached file....

[JotM]

Originally Posted by Martijn_vE

I've been working on a resistance module that also includes Holtrop & Mennen, Oortmerssen, Hollenbach and some others. But not Savitsky (planing hulls).

Is there some resource, preferably online, that I can read from so at least I am able to understand what all of you are talking about here?

If have been trying to find out what book I could read. That just might be the reader "Resistance and Propulsion of Ships" by Kuiper. If others here consider that to be a good choice, can someone please point out where the college reader store of the marine technology faculty of TUD is these days?

I am a mechanical engineer myself and all the surface and "far field" wave effects are pretty new to me.

Cheers,
Jaap