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BOAT3D V4.52 -- the Digital Sea Digital Analytics has a long-term commitment to provide simulation software with advanced capabilities. Latest News: 5/28/16 --- For a long time DMSolver, EDTECH, and Flash Calculator have had Win32hlp help files (BOAT3D still has a traditional text manual). However, Microsoft for a long time has been trying to deprecate Win32hlp and finally eliminated it in Windows 10, so the 3 Win32hlp files have been converted to html (not exactly as good but close). For now you have your choice of Win32hlp as before or using your browser to read the new files. In a recent development, the DMSolver installer has been found to have had a bug for some time regarding the interfacing with the Free Pascal compiler. I apologize for this. Also, I have been having for some time a difficulty preparing the object code for DMSolver, and when trying to upgrade to the latest Lazarus/Free Pascal nothing would work. I tried the next-to-the last version, and finally found the problem--an obscure syntax rule. So now DMSolver needs a slightly older version, but I should be able to upgrade to the latest soon. Meanwhile, you can download the older version here. older news Some Digital Analytics products: --- DMSolver provides a language and algorithm for simulation of large (or small) systems described by nonlinear ordinary differential and/or nonlinear algebraic equations. Version 6.02 is now available. DMSolver 6.0x is about twice as fast as V5.x and has a simplified user interface, including the interfaces needed to set up problems using its parameter estimation add-ins. EDTECH editor for technical data and graphics also provides a utility that produces graphical output from files produced by other Digital Analytics programs. New version 3.73 fixes the drawing printer interface so you can more easily use modern printers. 3.74 has a "freehand drawing" mode which may be useful to some people. --- BOAT3D application developed orginally by the late P. R. Payne to simulate planing boats with 3 degrees of freedom, uses DMSolver methodology which has been upgraded recently to include some of the speedups in V6.0 DMSolver. --- Flash Calculator does vapor-liquid equilibrium calculations for chemical engineering. --- Some other products are not currently supported, but details about them have been left in the web pages because new versions may be developed in the future. F. Dail Singleton, PhD
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