Displaced Volume: 573.4 cubic feet (seawater)
Weight of Water Displaced: ≈ 36,698 lbs (using 64 lb/ft³ for seawater)
Mass of Water Displaced: ≈ 1,140 slugs or ≈ 16,650 kg
Each cylinder: 3.9 ft diameter (1.95 ft radius), 16 ft submerged length at 45°.
| Parameter | Full Scale | Model (1/6) | Model in Inches |
|---|---|---|---|
| Cylinder Diameter | 3.9 ft | 0.65 ft | 7.8 inches |
| Cylinder Length | 24 ft | 4 ft | 48 inches |
| Submerged Length per Leg | 16 ft | 2.667 ft | 32 inches |
| Triangle Side Length | 60 ft | 10 ft | 120 inches |
| Leg Angle | 45° | 45° | 45° (unchanged) |
| Bracing Cables (bottom of leg to adjacent top corners) | ≈ 77.1 ft | ≈ 12.85 ft | 154 inches |
| Bottom Loop Cables (between leg bottoms) | ≈ 89.4 ft each side | ≈ 14.9 ft each side | 179 inches each side |
Total target weight: 170 lbs
This matches the scaled displaced weight of seawater (full-scale 36,698 lbs ÷ 216 = 170 lbs).
The model must weigh exactly 170 lbs (including frame, legs, cables, and any deck payload) to float at the correct scaled draft.
Minimum water depth: 30–36 inches (2.5–3 ft)
This keeps the model in "intermediate to deep water" conditions for 6–16 inch waves, avoiding bottom effects that would not occur in the open ocean. Shallower than ~24 inches will cause the waves to feel the bottom and break prematurely.
Position the model in Sandy Hill Bay where natural waves reach the desired height (6", 10", or 16") but are not yet breaking. Use a mooring or a person holding a stretchy bungee line to keep gentle station-keeping.
After recording, transfer the CSV file via USB, Google Drive, or email to your desktop for analysis in Excel, Python, or MATLAB.
Summary for Testing: Build to the dimensions and weight above. Test in 30–36 inches of water. Target wave heights of 6, 10, and 16 inches. Log accelerations with Physics Toolbox Sensor Suite. All linear dimensions and wave heights follow Froude scaling (λ = 1/6).
Generated for Seastead project — Sandy Hill Bay, Anguilla
``` Copy and paste the entire code above into a file named `seastead-model.html` and open it in any browser. All calculations use consistent Froude scaling and the given 45° leg angle.