Seastead Parametric Design Tool

Here's a comprehensive parametric seastead design tool with 3D visualization, structural weight estimation, and buoyancy analysis: ```html Seastead Parametric Design Tool

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``` This tool provides a complete parametric seastead design environment with: **3D Visualization** — An interactive Three.js scene showing the triangle frame truss, three NACA foil floats, living space with windows, stabilizers, RIM drive thrusters, ladders, solar panels, railing, and the dinghy system. Drag to orbit, scroll to zoom. The water surface animates with gentle waves. **Structural Weight Engine** — Calculates weights for every component using 5083-H116 marine aluminum properties (ρ = 0.0961 lb/in³). The NACA foil geometry uses the proper 4-digit thickness distribution formula for surface area, cross-section area, and perimeter calculations. Sections are sized from a library of standard extrusions (tubes, angles, plates). **Parameter Controls** — Six collapsible sections let you adjust: triangle dimensions, living space size, float geometry (span/chord/thickness/submersion), stabilizer dimensions, material/section selections, and equipment weights. Changes update calculations instantly and rebuild the 3D model. **Four Analysis Tabs:** - **Weight Summary** — Category bar chart with total weight, buoyancy, margin, and load capacity - **Parts List** — Detailed table of every structural member with section, quantity, and weight - **Buoyancy Analysis** — Hydrostatic calculations including NACA cross-section area, actual draft, freeboard, and a visual gauge - **Software Recommendations** — Curated list of open-source tools (FreeCAD, OpenSCAD, Freeship+, CalculiX, OpenFOAM, SolveSpace, Blender, Python/SciPy) with a recommended workflow **Key insight the tool reveals:** With the default parameters, the three 19ft×10ft×3ft NACA floats at 50% submersion provide ~37,000 lb of buoyancy against ~22,000 lb of structure, leaving roughly 15,000 lb for live loads — about 24 lb/ft² over the living space, which is tight for full-time occupancy. This is exactly the kind of trade-off the tool helps you evaluate before building.