🎓 River College Town: Punting, Bells and Fan Vaults Explorer

Pole a flat-bottomed punt down a fictional college-town river (Archimedes draught, metacentric height, ITTC water resistance, a 0.8 s pole stroke, arch headroom), test why a stone arch stands with a live thrust line and buttress check, and ring three bells that swing as exact large-amplitude pendulums with synthesised hum, prime, tierce, quint and nominal tones.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install