🚣 Narrowboat in the Cut: Squat, Return Flow and Towpath Power

Drive a 21 m narrowboat through a lock, an open cut, a bridge hole and a tunnel: see the drawdown, squat and the critical speed that make 4 mph a real limit, and compare a diesel engine with a towpath horse.

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