The main goal of jSDN is allowing the designer to fast prototype any kind of sailing yacht, including elements like hull, spars, sails and appendages. Although it is not limited to sailing vessels, both the working procedure and tools are targeted and optimised for those.
The jSDN software is distributed as a single download per operating system, which is fully functional. By default, jSDN is run in FREE mode, which implies that a few of the functionalities are not activated, except for design files saved with a PRO mode license (signed designs). In order to run jSDN in PRO mode, a valid license file must be purchased and provided. A free PRO evaluation license can also be obtained, which is fully functional and expires in 15 days. You may send evaluation license requests, inquiries and quotation requests to: humberto@um.es. The following table summarises the functionalities of the different licensing options:
| FREE | PRO | |
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Full NURBS curve and surface editor
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Basic POLY editor
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Importing 3DS, AC3D, STL, DXF and VRML files
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Importing Iand exporting IGES and IMS files
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Automatic sail measurement (RI and IMS)
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Automatic weight calculation and load
management
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Hydrostatics calculations
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Transversal and longitudinal stability
calculations
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Automatic CoG and trim calculation for
stability
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Velocity prediction calculations
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Longitudinal strength calculations
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Appendages parametric analysis and design
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We can provide free PRO licenses for Naval Architecture and Engineering students. jSDN has been used in several Bachelor and Master Degree Projects. The only requisite is they release their designs. Please contact the author in the above mentioned email address.