Location: Nevada City, CA, USA simple small boat design software hello, I'm trying to find some software to help me design smaller boats. Location: Nevada City, CA, USA okay, i'm having trouble with some of the more advanced aspects of the design, along with the other simpler designs. For more advanced stuff, write a letter to Baeckmo, as shown above and seriously look into Rhino 3D. 04:59 PM  Anyone with CAD or boat design software interested in helping me on a boat design?! When making potentially dangerous or financial decisions, always employ and consult appropriate professionals.
I thought I would offer up a 22ft hull for anyone who wants it (see attached picture, Rhino and ACAD files). I would appreciate if someone with experience of this size and type of design would comment on it.
It is not my skill but rather that Rhino (that I used for this hull) is really good at making developable surfaces.
Location: LA Developable surfaces Houndie check your version of Rhino, they had a bug un-rolling surfaces until release 3, SR3c.
Location: LA 22 dev hull Jeff, I did a quick loft and un-rolled your bottom plate, see if your version of Rhino reads the attached file. The increase in size when you develop a surface should not be a problem but I am no expert on this.
I less suspect the accuracy of the computer expanded plates as much as the nature of hand building hulls without stiff jigs. Paddlinglight is publishing a series of digitised plans for building cedar strip versions of well known traditional kayaks and canoes. Italians race development class of boats limited only by sail area and length limited by the standard (in Italy) 3.1m sheet of ply. Free plans for a very simple 14ft stitch and glue skiff drawn by myself (Gavin Atkin) and named after my mother. Free plans for a very simple 12ft stitch and glue skiff drawn by myself (Gavin Atkin) and named after my daughter, Ella.
An easy to build light-weight 15ft 6in rower suitable for use on lakes and rivers, perhaps for exercise rowing but also usable for picnics on the river, fishing and the rest.
Plans for two boats - one extraordinarily beautiful, the other an extraordinarily eccentric racer. A nicely-built example of my Cinderella canoe, adapted for rowing with some neat outriggers made from ply.
Free designs for a very sweet ply camp-cruiser for one, or a cat-rigged sailing dinghy for more.
Not really about free boat designs - though there might be some later - but a new blog about boat restoratons, traditional boatbuilding, and traditionally-derived boats. Try our customised Google search designed to eliminated all the irrelevant junk you sometimes get! A little open-canoe for paddle-savvy kids who love the water, and aren't nervous in a tippy boat! I like this one from an old American magazine - built with some of the right period details, it could be a real head-turner. Square Metre Sharpie - one of the more obvious European developments from the North American sharpie working boats. A successful boat design is a fusion of shape, structure, practicality, seaworthiness and pure aesthetic appeal. It’s not quite as intuitive as we expected and it did take us a little while to produce something useful.
All material provided on this web site is intended solely for informational or educational purposes. Here's a remarkable collection of pre-drawn boat plans, ranging all the way from canoes and dinghies to houseboats and even submarines! Simple still gives you everything you indigence to design a hull trump of completely its FREE. Hull Design software I have designed a 4.9m cat on graph paper and I want to design it using CAD software. Location: Cudjoe Key Fl Tom, I went through this software thing for a number of years, and finally realized the only good boat design software is a large piece of paper and a sharp pencil! Location: Denmark Personally, I also prefer to do it the old-fashioned way, but I must admit that it is by no means better than using a computer - only slower!
Software for small craft engineering is available, but probably not for craft of the size you mentioned. The price of $150,000 that BillB mentioned is ridiculus, but you must be prepared to spend up to a couple of thousand, though (I should mention here that there are free- and shareware available, too - search for Hullform or PolyCad). Location: MX Hi Tom, Bill is correct up to some degree, be sure of what you are looking for (or what you want to achive with the software results wise), this softwares are usefull but they are not magic boxes that you ask and they respond, so one quick response could be prosurf and rhino, it has worked for me, and they do most of what i need, this is for hull shape and interior detailing, other good one is hullform and rhino, hullform the pro version is quite complete, it may be little bit harder to use IMO, and again this is for hull fairing and lofting, stability (initial with rhino and prosurf) and complete with hullform, other people will be able to give you their opinions.
Location: Perth, Western Australia I have to comment regarding Bill's statements about the high cost and complexity of modern CAD systems. Similarly, Maxsurf was the system of choice of 7 out of 10 of the syndicates involved in the 2003 America's Cup.
I do not disagree that designing with pen and paper is a perfectly valid way of creating a hull shape, but it is slow, difficult to calculate volumetric properties, and inherently inaccurate, requiring the additional step of full sized lofting to create accurate lines to build from. Rather than imposing a fixed style on designs, I would argue that computer aided design methods have resulted in a greater degree of artistic freedom in the design of hulls and superstructures, particularly on luxury yachts that have gone from relatively simple shapes 20 years ago to a wide variety of more organic shapes, made possible by powerful surface modelling software.


The pic below, a design by Brett Bakewell-White of New Zealand, is a good example, initially modelled in Maxsurf with further detailing and rendering in Vellum 3D. I must mention again, there is a BIG difference between Design software and Engineering software.
Back to the reality of designing craft under 100 feet, which are considered small craft by all marine architects, sure one can figure out what size screws to use by eye, or state what thickness the bulkhead skins should be but I have never seen any Boat Styling software come close to doing this. As far as pencil and paper and clay models, this has worked for a hundred years, and is 100% accurate. On the contrary, Fastship has a relatively small number of integrated tools compared to Maxsurf. On the other hand, the Maxsurf suite consists of many well integrated applications using common files and a common user interface, all developed by my company, Formation Design Systems. Like Fastship, we rely on programs such as ShipCam for downstream structural design and production, as this is an area that we consider to be outside our area of expertise, however Fastship has no equivalent to our preliminary structural design program, Workshop.
I should also correct the impression you give that Maxsurf is for small craft and Fastship is for big ships. Location: Cudjoe Key Fl Andrew, now that is the reply Tom is looking for, among the rest of us!
You may want to consider drawing and fairing your hull in a CAD program, not a hull design program. It is freeware, relatively simple to use (but it DOES have a learning curve), and gives you all the hydrostatics, stability and resistance calculations you need for kayaks. And use the search function here (and for the basically similar Delftship) to find good tutorials. I am using it but I always go back to hullform for quick simple hull design or just playing around. Truly, you can't expect much from the simpler, cost free software when it comes to documentation.
Do make use of the archives and the search function at whatever site you do your snooping, as there is a rich cascade of info at your finger tips to help you figure out the morass before you.
I have used Rhino for years now for design work and it is incredibly good for flat panel design, as well as smooth hull variations. It is simple and rather straight, 16deg deadrise, outboard hull with developable surfaces (plywood or alu). I made an effort to use low degree curves to create the surfaces thereby it is easier to keep them fair.
Also, you cannot fair control points on the surface membrane stretched between two curves without making it non-developable.
Saying its a cone is a little simplistic, see the graphic where I projected the side shell past the chine and sheer of my deeper vee hull. The deviation should be absorbed by most manufacturing process tolerance, I would guess even if you used a CNC machine. The bow waterlines could be slimmed by moving the forefoot aft or a more gradual turn up from the keel.
Such assembly precludes the attainment of the tolerance of the NC cut parts during field assembly. The website's in Italian, but has lots of pictures and best of all one of the builders and racers has published plans for their boat - and it's a lot like a large sailing Mouse, such as the Eek. Most are in the UK, but we will include some US material, not least because the author is an enthusiast for American boat types. It’s ideal for hobby sailors and boatbuilders who want to extend their skills into the area of boat design. And, although boat designers have managed for centuries without computer software, in the 21st Century you really need some decent CAD software to put your ideas into practice. We’ve been testing 3D Boat Design Software to see how easy it is to achieve these ideals. Once you have learned the basic principles, you’ll be able to produce much more sophisticated designs. Nothing on this site is intended to be a substitute for professional boat construction advice. If your skills lie more in the practical sphere then this pack of boat plans might be just what you're looking for! Few things can be more than cheering than buiding your own Few thingsm that is take out designing it too. I understand it will take a while to design it on CAD but I am deternined to design the catamaran using CAD software. And there is the added benefit that the software can do the calculations for you (hydrostatics, stability etc.) much, much faster than if done by hand. The only reason why I'm considering purchasing CAD software is because all the most successful companies in the world, whether it is to do with yachts or to do with cars are using Cad software. Maxsurf costs as little as $700, yet was used to design the hull shape of Mirabella, the world's largest single masted yacht.
Each one of these syndicates could afford to choose whatever software they liked, and in many cases they were sponsored by major CAD vendors, yet they chose to pay full retail price for Maxsurf. As a result, few of todays professional designers still do things by hand, and more and more use computer systems such as Maxsurf, and are more than satisfied with the results. Maxsurf and the like, are fine programs for small craft, and making beautiful displays, BUT they don't ENGINEER the boat!
Remember you the draftsman are creating the exact cut lines this way, the computer is always off by some.
Proteus, the authors of Fastship, rely on GHS (by Creative Systems) for their hydrostatics and stability, NavCad (by Hydrocomp) for their resistance and propulsion, the US Navy SMP program for their seakeeping analysis, and ShipCam (by Albacore Research) for detailed structural design.


Maxsurf is used by shipyards of all sizes, including installations in 5 of the biggest shipyards in Japan - Mitsui, Mitsubishi, Kawasaki, IHI and Sumitomo.
Admittedly, in Maxsurf you can set the tolerance to which curves are calculated, and the default is 0.2mm. User ID - guest, password - guest) and you can access our FAQ, manuals, and tutorials for all programs. I still draw the basic shapes by hand and transfer them using points into Ashlar-Vellum Graphite ($995). Freeware has some decent written material to get you going, but it's going to take some hours in the chair to get it under control. As a modeling program, it is pretty much a standard in many small, to medium, design shops worldwide and it is affordable.
Also the surfaces are of degree 1x4 (using 2x5 control points) which is key to make them easily developable.
The expanding plate question is a good one, I have done a lot of large aluminum hulls and do not provide shell plate geometry. It's been going on for years apparently, but I've only just learned about it from Frank Baldry of the UK HBBR. Never having used any sort of CAD software before, we were a little apprehensive and unsure just how much we were going to be able to achieve. For such a sophisticated piece of software we were surprised at the small size of the installation. Somehow we managed to duplicate everything and we ended up with this rather straightforward-looking dinghy. Always consult a professional if you are in any doubt about the seaworthiness of any craft you design. Software that they have actually developed from scratch in-house consists of Fastship and Maestro, their excellent structural analysis package. The enclosed photo is one of the most recent vessels constructed using Maxsurf and Workshop, one of the largest container ships afloat.
If you think you can cut and build more accurately, you can always set the tolerance finer. It's all about putting in the time, asking questions of those who have gone before you and making some reasonable connections in the process that open new doors and new realizations. The best way to process a developable plate hull is to fair the sheer, and chine (or chine to keel), loft a surface between the two and leave it alone.
When I did this edge extension to yours it twisted which is ok as long as those lay lines don't twist or intersect within the section of the plate you are trying to un-roll. The duplicate facility is there for a reason though – it enables you to develop one side of your hull then reproduce an exact mirror image for the other half. I have experience with computers but have only used very basic design software before for other reasons. So if these companies that have turnovers of ?500 million, then they must be doing something right!
Any SHIP BUILDING software costs many thousands of dollars simply because in itself, it is huge.
I am not using the software to design a 80ft yacht, I would be using it to design a 4.9m catamaran.
When it looks good on screen, I plot it out on D size paper and take a long hard look at it, just as I would by hand. But when I see the possibilities of Freeship, I realize that one should take a close look there! I have seen many designers try to get flair into the bow of a developable hull since they appear to bow out. We were a little confused by the number of views that it’s possible to have of your hull as you develop it, but fortunately you can switch off the ones you don’t want. But it’s like most software, once you’ve played around with it for a few minutes then it all begins to fall into place. Robert Livingston’s Free kayak design software is worthy for designing strip built modest craft hulls. I calculate the areas of the hull sections using the 2D Analysis tool, then I input the areas, waterline halfbreadths and vertical centers of the areas into a spreadsheet to calculate the hydrostatics. Its just due to the bow shape being a portion of a cone, which is single curvature and the only surface it will accept to create flat patterns. I would like to hear others opinions about how much luck they have had with building from a computer shell expansion.
There are a number of sample hulls included with the package and it makes sense to experiment with them first, as we did, to get used to the interface. I establish this site http projects freeship I played around with for ampere little turn looks interesting. I just want a hull design software that will let me produce a professional hull shape with no major problems, but I don't want to spend thousands on the most high tech software out there. This works fine for small boats and you have the CAD program to detail the rest of the boat, which is really the bulk of the design anyway. You send away stimulant offsets operating theatre just angstrom unit few free boat design software.



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