I am working with DELFTSHIP to design first my project, that is a small hull for fishing ir rivers and stable waters.
Start going around and look at the boats others use and first see what you have a liking for.
Be sure to make COPIES and work from them so you have an immediately-available, pristine version if you need to start over.
Originally Posted by alanrockwood If you are working with the free version of DelftShip you can't save the developed plates, though you can visually examine the results. When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Location: Bangkok, Thailand Fair Martijn, there's a whole lot of work involved.
Location: Bangkok, Thailand OK, I have downloaded and tested, IGES is in the pro version, fair again. Location: Ontario Well, I still have some experimenting with the new version to do before I can draw too many conclusions. It'll be interesting to see how the project plays out now that new versions are not freeware anymore.
I may end up staying with 2.6 as, without IGES support and with limited stability-calculation power, DelftShip Free is much less useful for me.
Sadly, anyone who was going to develop stuff for the open source programme will now surely sell it as an add on instead, much like Delft Uni seem to have. Location: Bangladesh i cant save the design in the free version of delftship! I'm a little suprised no-one has picked up on my comment about commercialising an open source, GNU, code. The GNU GPL does not prohibit closed-source developments from being based on open-source code. Martijn may be the original author of the code, but once something is released under a particular licence, it stays under that licence- if that happens to be the GNU GPL as was the case with Freeship, then that code will always be open-source. Delftship may have the Freeship kernel at its core, but the program as a whole contains proprietary code now.
Delfship, proprietary software, property of martijn, can reuse all the GPL code written by martijn. Location: Pensacola, Florida Martijn has done a superb job with this code so far, and we should all be very grateful for the work he has done, as I am.
And if you think that open source software is inferior, you haven't tried Linux lately, or Firefox, or Open Office .
And as has been pointed out, nothing prevents anyone with the interest from continuing with FreeShip development.
Help required for Maxsurf » Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Search this Thread Advanced Search Similar Threads Thread Thread Starter Forum Replies Last Post help with free!ship!!!
Location: somewhereonearth It would be very nice if the added thickness is thrown by direct choice of the user, but even better if that thrown thickness is actuallypart of the file even if as an offset mesh.
Seams in transverse watertight bulkhead areas are less noticable to me because the curvature is not as pronounced.
BTW, so long as the hull model has no tight curvature, it's possible to get some neat, organized grid-lke meshes rather than triangular pieces that if stitched would be LOTs of pieces.
The major downside to my method is that the hull will effectively have chines in it rather than faired curves, meaning your hydros will account for chines.
Originally Posted by Martijn_vE Specifying a mean shell thickness on the hydrostatics tab of the project settings however will include the thickness in the hydrostatics. However, this means that the hydrostatic and hydrodynamic calculations are in reality, all wrong. On a large steel ship on which the hull thickness is a trivial part of the overall displaced volume, this is probably not an issue.
I suppose a workable approximation of the effect of adding hull thickness could be derived by scaling the various axes of the design up by an amount proportional to the hull thickness. Location: Netherlands Typically boats and yachts are designed to the outside of the hull whereas ships are designed to the inside of the hull. In my case, I cnc cut the hull panels as designed, (after adding some allowance to account for the transom thickness and the bow chamfer) then chamfer the edges of the panels about half their thickness.
My calculated displacement will be slightly (2% or so) conservative and my actual overall dimensions will larger by one hull thickness in the transverse direction and about two hull thicknesses (plus the transom) in the longitudinal direction.


If I made steel or aluminum boats, I wouldn't chamfer the panels, so the bulkheads wouldn't need trimming, but my calcs would be off by the entire displaced volume of the skin materials. Location: Alliston, Ontario, Canada I usually omit the thickness and design to the outside surface, which gives me correct developments, provided they are chamfered, and then I just have to remember to knock the skin thickness off the stations when cutting station molds or bulkheads. Does the sw consider automatically the thickness of the stakes in, the cutting plane of the stations, or I have to consider it manually???? Location: WNY To the best of my knowledge, thickness is not a consideration when it comes to flat patterns.
Opinion about AQWA » Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Search this Thread Advanced Search Similar Threads Thread Thread Starter Forum Replies Last Post Hull thickness??? Location: Iowa Your main problem is you modeled both sides of the hull yourself.
You can see on the left side that the corner is causing the problems trying to translate and meet the smooth curve.
MAXsurf VPP » Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Search this Thread Advanced Search Similar Threads Thread Thread Starter Forum Replies Last Post Delftship fairing & Curvature plots queries? I'll post them a message asking for the source code, but I imagine I'll never get it, and I doubt I'll get any reply from them. About your second question, the answer is no, what you get is what you see (I cut&paste all the links from their download page).
Location: Ontario The GPL does not prohibit a distributor from charging money for software covered under the GPL.
It does, however, require that any program containing GPL-covered code be licensed, as a whole, under the GPL, and must contain a prominent notice to that effect. Location: Netherlands Update After examining the source code it seems that all references to the GPL license (including the GPL license itself) are removed. Marshmat: Since I'm the sole developer and have the copyrights that pretty much leaves me free to use the code in whatever way I want to. Location: Chile Yes, and it would be nice if something can be done about that.
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The Clickbank Marketplace is not authorized to accept deposits or trust accounts and is not licensed or regulated by any state or federal banking authority. ClickBank has every incentive to keep customers happy by providing quality products and technical support. Location: Dubai (UAE) Just to keep you updated, ClickBank refunded my purchase. Location: Seattle Delftship table of offsets format and measurements I am new to Delftship and I plan to be taking off lines from my 23' skiff and want to make all the correct measurements for a txt file that I can import as a table of offsets. Location: Seattle Importing Chines worked Here is the line plans of my boat that I measured. Location: Rockport, Maine & Rochester Hills, Michigan Does the physical boat have the lumps and bumps? Location: Seattle There are only three strakes, so my next model will use the lapstrake lines as you suggested. Location: Seattle Another iteration using the lapstrakes as chines Still need to clean this up. Location: Iowa You have to to into properties and change the waterline to what you want.
Location: Tasmania,Australia Did you find the answer to your original questions ? I was not able to import the table of offsets into Delftship, but I was successful at importing chines which are XYZ along a longitudinal (lengthwise) line.
Dave Davesea View Public Profile View Davesea's Gallery Find all posts by Davesea Page 1 of 2 1 2 > « Marine Design Software for Hull Modeling? But i dont know how i have a map for hull cutting and curves for merge them for complete the hull on skeleton.


At some point, it becomes exasperating and you will have to choose where you want to stay if you're going to constantly refine the model. The professional version has a few more features than the free version (such as an automatic fairing routine for example) but it can also be extended with some professional extensions for crosscurves, critical points, tank modeling and intact stability (load cases). GPL means other can use your code freely (more or less, modifications should be made public source) , but does not remove ownership of the code. Each solid plate that originates form a surface that is itself originated from the exported mesh has a wedge gap between the plate edges. Where it is, I get to use the interference as I prefer, since the hull is inward curving in the bow area sufficiently enough to need the tool.
It seems to be a negligible amount especially depending on the hull size and the power being installed. So only for ships you'll need to correct the displacement for the added volume of the shell. I've just send Andrew Casey another mail to ask him what he is going to do to correct this. At times, we may reverse a sale in order to comply with: credit card industry rules, ACH industry rules, PayPal terms of service, US law, and requests from verified US judiciary or law enforcement agents.
Roughly speaking you can assume there is no file compatibility between the programs, although there is a very limited amount of file compatibility. If you're not doing combatants or naval type vessels, then maybe stick with DelftShip or Delftship Pro if you can afford it. ViaCAD Pro v&, I convert the mesh to a surface, then thicken the surface to some number of mm. But, more than that, creasing WTTVBHD stations and corner-pointing the control points allows the color-coding of COMPARTMENTS, and since you can assigne those meshes to conveniently-named layers, you're at a good start in your 3D model. Besides, they are not the $10,000 per seat programs that mostl likely would eradicate my problem. He has gone through some trouble removing all the references to FREE!ship from the program. There, the layers manipulations is much easier, especially if you find the worksheet-like view easier, since you can all-at-once see what layers are on, which have various properties on and off, and what colors are in use on all the layers.
These wedge gaps or spaces are because I throw the thickness outward, on an outcurving hull. There is a lack of fairness on a surface that is contained by four crease edges yet it is not fair? The fact that the GPL license is not included in the installation (nor any reference to it) can be used aginst him though. I think that freeship+ is probably exporting OK because I can import the file back into freeship+, so I think there is something wrong with the delftship import.
I use creases at station intervals that correspond to main transverse watertight bulkheads so I can get individual compartments with lined up vertically with stations, and I select the correspondnig control points and make them corner points to enforce getting rid of curved meshing that otherwise would make it hard to account for the mass of each compartment. If I throw the thickness inward, i could use the interference tool to remove the redundant material. If I assign a thickness in DS and make some settings like in the attachement will give me higher displacement, Cp, %lcb values. I've tried to keep the plate errors as low as possible however I'm not sure what error translates to developable plywood.. But, that means increasing my hull beam by the amount of the shell plate thickness, which I presume changes my hydros. Moreover controlling these parameters(Cp,disp,lcb) are almost imposible after assigning thickness. I also have learnth that delftship does not calculate Cp and Lcb correct for yatch designer.
The second problem the midship location should be at the middle of the Lwl and when you calculate the %lcb the referance point must be the starting of Lwl (At stern) however it does not use it.



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